Related
Its an Activity with Tabs, I'm getting data from API using Volley library. There is only one Fragment. Whenever Tab is changed either by sliding or clicking the Tab, the function that calls the APIs is called with different data.
Problems:
1) It loads items every time on working internet, but it sometimes shows and sometimes not. When I press home button (i.e. activity is running and in background) and then select the app from opened apps list it shows data. I've to pause and resume app to view changes by pressing home button and reselecting from opened apps. If I lock screen and unlock screen then also it shows the content.
2) Similar to problem 1) there is an info button on top right corner it shows/hides a layout when clicked. But some time when problem 1) occurs it also behaves same.
3) Also looks similar to 1) and 2) there is TextView (Options) that shows/hides a layout when clicked But some time when problem 1) occurs it also behaves same.
Any help would be appreciated, I'm running out of time...
Here is screenshot: Screenshot
RestaurantDetailActivity.java
public class RestaurantDetailActivity extends AppCompatActivity {
LinearLayout contactLayout;
TabLayout tabLayout;
ViewPager viewPager;
TextView nameTv, descrTv, timingsTv, totalRatingsTv;
RatingBar ratingsRb;
ImageView restaurantIv;
String resId;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_restaurant_detail);
//get data from previews activity
Intent intent = getIntent();
//init views
nameTv = findViewById(R.id.nameTv);
ratingsRb = findViewById(R.id.ratingsRb);
descrTv = findViewById(R.id.descrTv);
timingsTv = findViewById(R.id.timingsTv);
totalRatingsTv = findViewById(R.id.totalRatingsTv);
contactLayout = findViewById(R.id.contactLayout);
tabLayout = findViewById(R.id.tabLayout);
viewPager = findViewById(R.id.viewPager);
timingsTv = findViewById(R.id.timingsTv);
restaurantIv = findViewById(R.id.restaurantIv);
resId = intent.getStringExtra("id");
//setup tabs
setupViewPager(viewPager);
tabLayout.setupWithViewPager(viewPager);
final String name = intent.getStringExtra("name");
final String ratings = intent.getStringExtra("ratings");
String description = intent.getStringExtra("description");
String status = intent.getStringExtra("status");
String resPaused = intent.getStringExtra("resPaused");
String open = intent.getStringExtra("openTime");
String close = intent.getStringExtra("closeTime");
//set data in header
nameTv.setText(name);
ratingsRb.setRating(Float.parseFloat(ratings));
descrTv.setText(description);
final String timings;
if (resPaused.equals("0")) {
timings = con24to12(open) + " - " + con24to12(close);timingsTv.setTextColor(getApplicationContext().getResources().getColor(R.color.colorWhite));
} else {
timings = "Closed Today";
timingsTv.setTextColor(getApplicationContext().getResources().getColor(R.color.colorRadish));
}
//set timings
if (Utils.compareOpenTime(open)) {
timingsTv.setTextColor(getApplicationContext().getResources().getColor(R.color.colorWhite));
timingsTv.setCompoundDrawablesWithIntrinsicBounds(R.drawable.ic_time_white, 0, 0, 0);
timingsTv.setText(con24to12(open));
} else {
timingsTv.setText(timings);
}
totalRatingsTv.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Intent intent1 = new Intent(getApplicationContext(), RestaurantReviewsActivity.class);
intent1.putExtra("restId", resId);
intent1.putExtra("restName", name);
intent1.putExtra("restRatings", ratings);
startActivity(intent1);
}
});
final Bitmap b = BitmapFactory.decodeFile(getExternalCacheDir() + "/TopServeImages" + "/" + intent.getStringExtra("image"));
restaurantIv.setImageBitmap(b);
}
ViewPagerAdapter adapter;
private void setupViewPager(ViewPager viewPager) {
adapter = new ViewPagerAdapter(getSupportFragmentManager());
final ProgressDialog progressDialog = new ProgressDialog(this);
progressDialog.setMessage("Getting Menu...");
progressDialog.show();
String token = "auth" + System.currentTimeMillis();
Map<String, String> params = new HashMap<>();
params.put("Token", token);
params.put("RestaurantID", resId);
Log.d("TheToken", Utils.getToken() + "" + Utils.getEmail());
String url = ApiManager.headerUrl + ApiManager.menuItemsUrl;
JsonObjectRequest jsonObjReq = new JsonObjectRequest(Request.Method.POST,
url, new JSONObject(params),
new Response.Listener<JSONObject>() {
#Override
public void onResponse(JSONObject response) {
progressDialog.dismiss();
Log.d("TheResponse", response.toString());
try {
JSONObject jsonObject = response.getJSONObject("Response");
JSONArray jsonArray = jsonObject.getJSONArray("MenuCategories");
for (int i = 0; i < jsonArray.length(); i++) {
String menuItemCategoryID = jsonArray.getJSONObject(i).getString("MenuItemCategoryID");
String name = jsonArray.getJSONObject(i).getString("Name");
String restaurantID = jsonArray.getJSONObject(i).getString("RestaurantID");
adapter.addFragment(RestaurantFragment.newInstance((i + 1), "" + name, restaurantID, menuItemCategoryID), "" + name);
adapter.notifyDataSetChanged();
}
} catch (Exception e) {
Toast.makeText(getApplicationContext(), "Exception: " + e.getMessage(), Toast.LENGTH_SHORT).show();
}
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
progressDialog.dismiss();
try {
if (error.getMessage().toLowerCase().contains("no address associated with hostname")) {
Toast.makeText(getApplicationContext(), "Slow or no Internet connection...", Toast.LENGTH_SHORT).show();
} else {
Toast.makeText(getApplicationContext(), "Error: " + error.getMessage(), Toast.LENGTH_SHORT).show();
}
} catch (Exception e) {
Toast.makeText(getApplicationContext(), "Error: " + e.getMessage(), Toast.LENGTH_SHORT).show();
}
}
});
Volley.newRequestQueue(this).add(jsonObjReq);
viewPager.setAdapter(adapter);
}
public class ViewPagerAdapter extends FragmentPagerAdapter {
private final List<Fragment> fragmentList = new ArrayList<>();
private final List<String> fragmentTitleList = new ArrayList<>();
public ViewPagerAdapter(FragmentManager fm) {
super(fm);
}
#Override
public Fragment getItem(int position) {
return fragmentList.get(position);
}
#Override
public int getCount() {
return fragmentList.size();
}
public void addFragment(Fragment fragment, String title) {
fragmentList.add(fragment);
fragmentTitleList.add(title);
}
#Nullable
#Override
public CharSequence getPageTitle(int position) {
return fragmentTitleList.get(position);
}
}
public void clicks(View view) {
if (view == findViewById(R.id.backTv)) {
onBackPressed();
} else if (view == findViewById(R.id.infoBtn)) {
if (contactLayout.getVisibility() == View.GONE) {
contactLayout.setVisibility(View.VISIBLE);
} else {
contactLayout.setVisibility(View.GONE);
}
}
}
public String con24to12(String from) {
DateFormat df = new SimpleDateFormat("HH:mm:ss");
DateFormat outputformat = new SimpleDateFormat("hh:mm aa");
Date date = null;
String output = null;
try {
date = df.parse(from);
output = outputformat.format(date);
from = output;
} catch (Exception pe) {
Toast.makeText(getApplicationContext(), "" + pe.getMessage(), Toast.LENGTH_SHORT).show();
}
return from;
}
}
RestaurantFragment.java
public class RestaurantFragment extends Fragment {
String title;
int page;
String restaurantId;
String menuItemCategoryID;
AdapterMenu mAdapter;
List<ModelMenu> menuList;
ImageView fabCartIv;
RecyclerView recyclerView;
public RestaurantFragment() {
}
public static RestaurantFragment newInstance(int page, String title, String restID, String menuItemCategoryID) {
RestaurantFragment fragmentFirst = new RestaurantFragment();
Bundle args = new Bundle();
args.putInt("someInt", page);
args.putString("someTitle", title);
args.putString("restId", restID);
args.putString("menuItemCategoryID", menuItemCategoryID);
fragmentFirst.setArguments(args);
return fragmentFirst;
}
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
page = getArguments().getInt("someInt", 0);
title = getArguments().getString("someTitle");
restaurantId = getArguments().getString("restId");
menuItemCategoryID = getArguments().getString("menuItemCategoryID");
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_restaurant, container, false);
recyclerView = view.findViewById(R.id.menuRecyclerView);
fabCartIv = view.findViewById(R.id.fabCartIv);
loadMenuItems();
return view;
}
private void loadMenuItems() {
recyclerView.setHasFixedSize(true);
recyclerView.setLayoutManager(new LinearLayoutManager(getActivity().getApplicationContext()));
menuList = new ArrayList<>();
String token = "auth" + System.currentTimeMillis();
Map<String, String> params = new HashMap<>();
params.put("Token", token);
params.put("RestaurantID", restaurantId);
String url = ApiManager.headerUrl + ApiManager.menuItemsUrl;
JsonObjectRequest jsonObjReq = new JsonObjectRequest(Request.Method.POST,
url, new JSONObject(params),
new Response.Listener<JSONObject>() {
#Override
public void onResponse(JSONObject response) {
try {
JSONObject joResponse = response.getJSONObject("Response");
JSONArray jaMainMenu = joResponse.getJSONArray("MainMenu");
JSONArray jaMenuItemImages = joResponse.getJSONArray("MenuItemImages");
JSONArray jaLinkedMenuItems = joResponse.getJSONArray("LinkedMenuItems");
for (int i = 0; i < jaLinkedMenuItems.length(); i++) {
String menuItemCategoryID1 = jaLinkedMenuItems.getJSONObject(i).getString("MenuItemCategoryID");
if (menuItemCategoryID.equals(menuItemCategoryID1)) {
String menuItemID1 = jaLinkedMenuItems.getJSONObject(i).getString("MenuItemID");
for (int j = 0; j < jaMainMenu.length(); j++) {
String deleted = jaMainMenu.getJSONObject(j).getString("Deleted");
String description = jaMainMenu.getJSONObject(j).getString("Description");
String ingredients = jaMainMenu.getJSONObject(j).getString("Ingredients");
String inventory = jaMainMenu.getJSONObject(j).getString("Inventory");
String menuItemID = jaMainMenu.getJSONObject(j).getString("MenuItemID");
String name = jaMainMenu.getJSONObject(j).getString("Name");
String paused = jaMainMenu.getJSONObject(j).getString("Paused");
String price = jaMainMenu.getJSONObject(j).getString("Price");
String rating = jaMainMenu.getJSONObject(j).getString("Rating");
String restaurantID = jaMainMenu.getJSONObject(j).getString("RestaurantID");
String servedEnd = jaMainMenu.getJSONObject(j).getString("ServedEnd");
String servedStart = jaMainMenu.getJSONObject(j).getString("ServedStart");
String imageURL = jaMenuItemImages.getJSONObject(j).getString("ImageURL");
if (menuItemID1.equals(menuItemID)) {
ModelMenu cModels = new ModelMenu("" + deleted,
"" + description,
"" + ingredients,
"" + inventory,
"" + menuItemID,
"" + name,
"" + paused,
"$" + price,
"" + rating,
"" + restaurantID,
"" + servedEnd,
"" + servedStart,
"" + imageURL);
menuList.add(cModels);
}
}
mAdapter = new AdapterMenu(menuList, getActivity().getApplicationContext(), RestaurantFragment.this);
recyclerView.setAdapter(mAdapter);
}
}
} catch (Exception e) {
e.printStackTrace();
}
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
try {
if (error.getMessage().toLowerCase().contains("no address associated with hostname")) {
} else {
}
} catch (Exception e) {
e.printStackTrace();
}
}
});
Volley.newRequestQueue(getActivity()).add(jsonObjReq);
}
}
AdapterMenu.java
public class AdapterMenu extends RecyclerView.Adapter<AdapterMenu.MyHolder> {
List<ModelMenu> menuList;
Context context;
Fragment fragment;
public AdapterMenu(List<ModelMenu> menuList, Context context, Fragment fragment) {
this.menuList = menuList;
this.context = context;
this.fragment = fragment;
}
#NonNull
#Override
public MyHolder onCreateViewHolder(#NonNull ViewGroup viewGroup, int i) {
View view = LayoutInflater.from(context).inflate(R.layout.row_menus, viewGroup, false);
return new MyHolder(view);
}
#Override
public void onBindViewHolder(#NonNull final MyHolder myHolder, int i) {
final String title = menuList.get(i).getName();
final String description = menuList.get(i).getDescription();
final String price = menuList.get(i).getPrice();
final String image = menuList.get(i).getImage();
final String ingredients = menuList.get(i).getIngredients();
final String restaurantID = menuList.get(i).getRestaurantID();
final String menuItemID = menuList.get(i).getMenuItemID();
String notServing;
if (menuList.get(i).getServedStart().equals("null") && menuList.get(i).getServedEnd().equals("null")) {
notServing = "";
myHolder.itemView.setBackgroundColor(context.getResources().getColor(R.color.colorWhite));
} else {
String startTime = Utils.timeTo12hr(menuList.get(i).getServedStart());
String endTime = Utils.timeTo12hr(menuList.get(i).getServedEnd());
notServing = "Only Serving between " + startTime + " - " + endTime;
myHolder.itemView.setBackgroundColor(context.getResources().getColor(R.color.colorGray1));
}
myHolder.titleTv.setText(title);
myHolder.descriptionTv.setText(description);
myHolder.priceTv.setText(price);
myHolder.notServingTv.setText(notServing);
myHolder.addHintTv.setText("Add " + title + " To Order");
myHolder.optionsTv.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
if (myHolder.addItemLayout.getVisibility() == View.VISIBLE) {
myHolder.addItemLayout.setVisibility(View.GONE);
myHolder.optionsTv.setCompoundDrawablesWithIntrinsicBounds(0, 0, R.drawable.ic_down_black, 0);
} else {
myHolder.addItemLayout.setVisibility(View.VISIBLE);
myHolder.optionsTv.setCompoundDrawablesWithIntrinsicBounds(0, 0, R.drawable.ic_up_black, 0);
}
}
});
myHolder.addItemBtn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
SharedPreferences sp = context.getSharedPreferences("OderSP", Context.MODE_PRIVATE);
int count = sp.getInt("itemCount", 0);
SharedPreferences.Editor editor = sp.edit();
editor.putInt("itemCount", count + 1);
editor.apply();
onAddField(context, myHolder, title, price);
}
});
myHolder.infoBtn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent intent = new Intent(context, MenuDetailActivity.class);
intent.putExtra("title", title);
intent.putExtra("description", description);
intent.putExtra("image", image);
intent.putExtra("ingredients", ingredients);
intent.putExtra("restaurantID", restaurantID);
intent.putExtra("menuItemID", menuItemID);
intent.putExtra("image", image);
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
context.startActivity(intent);
}
});
try {
final Bitmap b = BitmapFactory.decodeFile(context.getExternalCacheDir() + "/TopServeImages" + "/" + image);
if (b == null) {
ImageDownloader.execute(new Runnable() {
#Override
public void run() {
new ImageDownloader().awsImageDownload(myHolder, image);
}
});
} else {
myHolder.iconIv.setImageBitmap(b);
}
} catch (Exception e) {
ImageDownloader.execute(new Runnable() {
#Override
public void run() {
new ImageDownloader().awsImageDownload(myHolder, image);
}
});
}
}
private int itemsCount = 0;
private void onAddField(final Context context, MyHolder myHolder, final String title, String price) {
final LinearLayout parentLinearLayout = myHolder.itemView.findViewById(R.id.menu_roLl);
LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
final View rowView = inflater.inflate(R.layout.row_additeminfo, null);
parentLinearLayout.addView(rowView, parentLinearLayout.getChildCount() - 1);
final TextView titleTv = rowView.findViewById(R.id.orderInfoTitleTv);
final TextView priceTv = rowView.findViewById(R.id.orderInfoPrice);
final ImageButton removeBtn = rowView.findViewById(R.id.orderInfoRemoveBtn);
itemsCount++;
EasyDB easyDB = EasyDB.init(context, "ITEMS_DB")
.setTableName("ITEMS_TABLE")
.addColumn(new Column("Item_Id", new String[]{"text", "unique"}))
.addColumn(new Column("Item_Name", new String[]{"text", "not null"}))
.addColumn(new Column("Item_Price", new String[]{"text", "not null"}))
.doneTableColumn();
easyDB.addData("Item_Id", title + (parentLinearLayout.getChildCount() - 1))
.addData("Item_Name", title)
.addData("Item_Price", price)
.doneDataAdding();
titleTv.setText("Order: " + itemsCount + " " + title);
priceTv.setText(price);
SharedPreferences sp = context.getSharedPreferences("OderSP", Context.MODE_PRIVATE);
itemsCount = sp.getInt("itemCount", 0);
SharedPreferences.Editor editor = sp.edit();
editor.putInt("itemCount", itemsCount);
editor.apply();
removeBtn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
onDelete(parentLinearLayout, view, title);
}
});
}
private void onDelete(final LinearLayout parentLinearLayout, final View v, final String title) {
AlertDialog.Builder builder = new AlertDialog.Builder(v.getRootView().getContext());
builder.setTitle("Remove this item?");
builder.setMessage(title);
builder.setPositiveButton("Remove", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialogInterface, int i) {
parentLinearLayout.removeView((View) v.getParent());
itemsCount--;
SharedPreferences sp = context.getSharedPreferences("OderSP", Context.MODE_PRIVATE);
SharedPreferences.Editor editor = sp.edit();
editor.putInt("itemCount", itemsCount);
editor.apply();
EasyDB easyDB = EasyDB.init(context, "ITEMS_DB")
.setTableName("ITEMS_TABLE")
.addColumn(new Column("Item_Id", new String[]{"text", "unique"}))
.addColumn(new Column("Item_Name", new String[]{"text", "not null"}))
.addColumn(new Column("Item_Price", new String[]{"text", "not null"}))
.doneTableColumn();
easyDB.deleteRow("Item_Id", "" + title + (parentLinearLayout.getChildCount()));
}
});
builder.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialogInterface, int i) {
}
});
builder.create().show();
}
#Override
public int getItemCount() {
return menuList.size();
}
class MyHolder extends RecyclerView.ViewHolder {
TextView titleTv, priceTv, descriptionTv, notServingTv, addHintTv, optionsTv, orderInfoTitleTv, orderInfoPrice;
ImageButton infoBtn, orderInfoRemoveBtn;
ImageView iconIv;
Button addItemBtn;
LinearLayout addItemLayout;
RelativeLayout orderInfoLayout;
MyHolder(#NonNull View itemView) {
super(itemView);
iconIv = itemView.findViewById(R.id.iconIv);
titleTv = itemView.findViewById(R.id.titleTv);
priceTv = itemView.findViewById(R.id.priceTv);
descriptionTv = itemView.findViewById(R.id.descriptionTv);
notServingTv = itemView.findViewById(R.id.notServingTv);
addHintTv = itemView.findViewById(R.id.addHintTv);
optionsTv = itemView.findViewById(R.id.optionsTv);
orderInfoTitleTv = itemView.findViewById(R.id.orderInfoTitleTv);
orderInfoPrice = itemView.findViewById(R.id.orderInfoPrice);
infoBtn = itemView.findViewById(R.id.infoBtn);
orderInfoRemoveBtn = itemView.findViewById(R.id.orderInfoRemoveBtn);
addItemBtn = itemView.findViewById(R.id.addItemBtn);
addItemLayout = itemView.findViewById(R.id.addItemLayout);
orderInfoLayout = itemView.findViewById(R.id.orderInfoLayout);
}
}
}
Here is how I fixed the issue:
First, understand the problem.
In the first activity where you fetch the restaurant list, that is fine.
When the restaurant is clicked, you pass the restaurant id to the RestaurantDetailActivity and do an API request.
In the API request you pass the restaurant id and get the response. The response contains a lost of all the categories of that restaurant and also the list of all the dishes provided by the restaurant in all the categories. This is very important.
At this stage you take only the list of categories in the response and start creating a fragment for each category. You pass the category id to each fragment.
Then each fragment does an API request to the the same API which was called at the activity level (point number 3 above). Each fragment does the same request independently and extracts only the list of menu items that belong to that category. That is a waste of resources.
When a fragment goes out of view , it is destroyed and then recreated when user swipes back to the tab. Every time user comes to a fragment, it loads data again. This repeated loading of data was causing the device to go unresponsive.
Now here is what I did. At step 3, when a string request is done for a particular restaurant and all the menu items are received in response. I create a separate List of menu items for each category at this stage and then pass the list to each fragment. Now each fragment has to just display the list it has received from the activity. Each fragment is not responsible for doing its own string request and parsing it to creating its own list of items. Rather it just received the list from activity and displays it. In this was only one API request is done at activity level. No matter how many time the user switches tabs, there is no extra API request.
public class ModelMenu implements Serializable {
private String deleted, description, ingredients, inventory, menuItemID, name, paused, price, rating, restaurantID, servedEnd, servedStart, image;
public ModelMenu() {
}
public ModelMenu(String name, String price) {
this.name = name;
this.price = price;
}
public ModelMenu(String deleted, String description, String ingredients, String inventory, String menuItemID, String name, String paused, String price, String rating, String restaurantID, String servedEnd, String servedStart, String image) {
this.deleted = deleted;
this.description = description;
this.ingredients = ingredients;
this.inventory = inventory;
this.menuItemID = menuItemID;
this.name = name;
this.paused = paused;
this.price = price;
this.rating = rating;
this.restaurantID = restaurantID;
this.servedEnd = servedEnd;
this.servedStart = servedStart;
this.image = image;
}
public String getDeleted() {
return deleted;
}
public void setDeleted(String deleted) {
this.deleted = deleted;
}
public String getDescription() {
return description;
}
public void setDescription(String description) {
this.description = description;
}
public String getIngredients() {
return ingredients;
}
public void setIngredients(String ingredients) {
this.ingredients = ingredients;
}
public String getInventory() {
return inventory;
}
public void setInventory(String inventory) {
this.inventory = inventory;
}
public String getMenuItemID() {
return menuItemID;
}
public void setMenuItemID(String menuItemID) {
this.menuItemID = menuItemID;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getPaused() {
return paused;
}
public void setPaused(String paused) {
this.paused = paused;
}
public String getPrice() {
return price;
}
public void setPrice(String price) {
this.price = price;
}
public String getRating() {
return rating;
}
public void setRating(String rating) {
this.rating = rating;
}
public String getRestaurantID() {
return restaurantID;
}
public void setRestaurantID(String restaurantID) {
this.restaurantID = restaurantID;
}
public String getServedEnd() {
return servedEnd;
}
public void setServedEnd(String servedEnd) {
this.servedEnd = servedEnd;
}
public String getServedStart() {
return servedStart;
}
public void setServedStart(String servedStart) {
this.servedStart = servedStart;
}
public String getImage() {
return image;
}
public void setImage(String image) {
this.image = image;
}
}
public class RestaurantFragment extends Fragment {
private String title;
private int page;
private String restaurantId;
private String menuItemCategoryID;
private AdapterMenu mAdapter;
private List<ModelMenu> menuList;
TextView orderTimeTv, changeTimeTv, tenPercentTv, fifteenPercentTv, twentyPercentTv, customTipTv, totalTipTv, subTotalTv, taxTotalTv, totalTv, pickedTimeTv, pickedDateTv, todayTv, cancelTv, itemCountTv;
ImageView fabCartIv;
RecyclerView recyclerView;
public RestaurantFragment() {
// Required empty public constructor
}
// newInstance constructor for creating fragment with arguments
/*public static RestaurantFragment newInstance(int page, String title, String restID, String menuItemCategoryID) {
RestaurantFragment fragmentFirst = new RestaurantFragment();
Bundle args = new Bundle();
args.putInt("someInt", page);
args.putString("someTitle", title);
args.putString("restId", restID);
args.putString("menuItemCategoryID", menuItemCategoryID);
fragmentFirst.setArguments(args);
return fragmentFirst;
}*/
public static RestaurantFragment newInstance(int page, String title, String restID, String menuItemCategoryID, List<ModelMenu> menuList) {
RestaurantFragment fragmentFirst = new RestaurantFragment();
Bundle args = new Bundle();
args.putInt("someInt", page);
args.putString("someTitle", title);
args.putString("restId", restID);
args.putString("menuItemCategoryID", menuItemCategoryID);
args.putSerializable("menuList", (Serializable) menuList);
fragmentFirst.setArguments(args);
return fragmentFirst;
}
// Store instance variables based on arguments passed
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
page = getArguments().getInt("someInt", 0);
title = getArguments().getString("someTitle");
restaurantId = getArguments().getString("restId");
menuItemCategoryID = getArguments().getString("menuItemCategoryID");
menuList = (List<ModelMenu>) getArguments().getSerializable("menuList");
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View view = inflater.inflate(R.layout.fragment_restaurant, container, false);
recyclerView = view.findViewById(R.id.menuRecyclerView);
itemCountTv = view.findViewById(R.id.itemCountTv);
fabCartIv = view.findViewById(R.id.fabCartIv);
/*if (title.equals("Appetizers")) {
loadDataAppetizers();
} else if (title.equals("Breakfast")) {
loadBreakfast();
} else if (title.equals("Noodle")) {
loadNoodle();
}*/
loadMenuItems();
fabCartIv.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
showCartDialog();
}
});
count();
return view;
}
private void loadMenuItems() {
//recyclerView.setHasFixedSize(true);
recyclerView.setLayoutManager(new LinearLayoutManager(getActivity().getApplicationContext()));
//Log.i("mytag", "list received with size: " + menuList.size() + ", in tab: " + title);
mAdapter = new AdapterMenu(menuList, getActivity().getApplicationContext(), RestaurantFragment.this);
recyclerView.setAdapter(mAdapter);
/*String token = "auth" + System.currentTimeMillis();
final ProgressDialog progressDialog = new ProgressDialog(getActivity());
//show progress dialog
progressDialog.setMessage("Getting Menu Items...");
progressDialog.show();*/
/*Map<String, String> params = new HashMap<>();
params.put("Token", token);
params.put("RestaurantID", restaurantId);
Log.d("TheToken", Utils.getToken() + "" + Utils.getEmail());
String url = ApiManager.headerUrl + ApiManager.menuItemsUrl;
JsonObjectRequest jsonObjReq = new JsonObjectRequest(Request.Method.POST,
url, new JSONObject(params),
new Response.Listener<JSONObject>() {
#Override
public void onResponse(JSONObject response) {
//progressDialog.dismiss();
Log.d("TheResponse", response.toString());
try {
JSONObject joResponse = response.getJSONObject("Response");
JSONArray jaMainMenu = joResponse.getJSONArray("MainMenu");
JSONArray jaMenuItemImages = joResponse.getJSONArray("MenuItemImages");
JSONArray jaMenuCategories = joResponse.getJSONArray("MenuCategories");
JSONArray jaLinkedMenuItems = joResponse.getJSONArray("LinkedMenuItems");
JSONArray jaMenuSidesTitles = joResponse.getJSONArray("MenuSidesTitles");
JSONArray jaMenuSidesLinks = joResponse.getJSONArray("MenuSidesLinks");
JSONArray jaMenuSides = joResponse.getJSONArray("MenuSides");
*//*for (int j = 0; j < jaMenuCategories.length(); j++) {
String menuItemCategoryID = jaMainMenu.getJSONObject(j).getString("MenuItemCategoryID");
}*//*
for (int i = 0; i < jaLinkedMenuItems.length(); i++) {
String menuItemCategoryID1 = jaLinkedMenuItems.getJSONObject(i).getString("MenuItemCategoryID");
if (menuItemCategoryID.equals(menuItemCategoryID1)) {
String menuItemID1 = jaLinkedMenuItems.getJSONObject(i).getString("MenuItemID");
for (int j = 0; j < jaMainMenu.length(); j++) {
String deleted = jaMainMenu.getJSONObject(j).getString("Deleted");
String description = jaMainMenu.getJSONObject(j).getString("Description");
String ingredients = jaMainMenu.getJSONObject(j).getString("Ingredients");
String inventory = jaMainMenu.getJSONObject(j).getString("Inventory");
String menuItemID = jaMainMenu.getJSONObject(j).getString("MenuItemID");
String name = jaMainMenu.getJSONObject(j).getString("Name");
String paused = jaMainMenu.getJSONObject(j).getString("Paused");
String price = jaMainMenu.getJSONObject(j).getString("Price");
String rating = jaMainMenu.getJSONObject(j).getString("Rating");
String restaurantID = jaMainMenu.getJSONObject(j).getString("RestaurantID");
String servedEnd = jaMainMenu.getJSONObject(j).getString("ServedEnd");
String servedStart = jaMainMenu.getJSONObject(j).getString("ServedStart");
String imageURL = jaMenuItemImages.getJSONObject(j).getString("ImageURL");
if (menuItemID1.equals(menuItemID)) {
ModelMenu cModels = new ModelMenu("" + deleted,
"" + description,
"" + ingredients,
"" + inventory,
"" + menuItemID,
"" + name,
"" + paused,
"$" + price,
"" + rating,
"" + restaurantID,
"" + servedEnd,
"" + servedStart,
"" + imageURL);
menuList.add(cModels);
}
}
//adapter to be set to recyclerview
mAdapter = new AdapterMenu(menuList, getActivity().getApplicationContext(), RestaurantFragment.this);
recyclerView.setAdapter(mAdapter);
}
}
} catch (Exception e) {
e.printStackTrace();
}
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
//progressDialog.dismiss();
try {
if (error.getMessage().toLowerCase().contains("no address associated with hostname")) {
} else {
}
} catch (Exception e) {
e.printStackTrace();
}
}
});
Volley.newRequestQueue(getActivity()).add(jsonObjReq);*/
}
private int tipPercentage = 10;
private String date = "";
//used to pass lists in confirm order
private ArrayList idList = new ArrayList();
private ArrayList nameList = new ArrayList();
private ArrayList priceList = new ArrayList();
int ids = 0;
List<ModelMenu> menuList1;
MyAdapters myAdapters;
#SuppressLint("NewApi")
private void showCartDialog() {
View view = LayoutInflater.from(getActivity()).inflate(R.layout.dialog_cart, null);
RecyclerView recyclerView = view.findViewById(R.id.menusLayout);
recyclerView.setHasFixedSize(true);
recyclerView.setLayoutManager(new LinearLayoutManager(getActivity()));
menuList1 = new ArrayList<>();
final AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
builder.setView(view);
builder.setOnCancelListener(new DialogInterface.OnCancelListener() {
#Override
public void onCancel(DialogInterface dialogInterface) {
tipPercentage = 10;
totalPriceAddRemove = 0.0;
idList.clear();
nameList.clear();
priceList.clear();
ids = 0;
}
});
builder.create().show();
orderTimeTv = view.findViewById(R.id.orderTimeTv);
changeTimeTv = view.findViewById(R.id.changeTimeTv);
tenPercentTv = view.findViewById(R.id.tenPercentTv);
fifteenPercentTv = view.findViewById(R.id.fifteenPercentTv);
twentyPercentTv = view.findViewById(R.id.twentyPercentTv);
customTipTv = view.findViewById(R.id.customTipTv);
totalTipTv = view.findViewById(R.id.totalTipTv);
subTotalTv = view.findViewById(R.id.subTotalTv);
taxTotalTv = view.findViewById(R.id.taxTotalTv);
totalTv = view.findViewById(R.id.totalTv);
pickedTimeTv = view.findViewById(R.id.pickedTimeTv);
pickedDateTv = view.findViewById(R.id.pickedDateTv);
todayTv = view.findViewById(R.id.todayTv);
cancelTv = view.findViewById(R.id.cancelTv);
final Button checkoutBtn = view.findViewById(R.id.checkoutBtn);
Button doneDTBtn = view.findViewById(R.id.doneDTBtn);
final TimePicker timePicker = view.findViewById(R.id.timePicker);
HorizontalCalendar hcCalendar = view.findViewById(R.id.hcCalendar);
final LinearLayout dateTimePickLayout = view.findViewById(R.id.dateTimePickLayout);
final RelativeLayout pricesLayout = view.findViewById(R.id.pricesLayout);
dateTimePickLayout.setVisibility(View.GONE);
pricesLayout.setVisibility(View.VISIBLE);
EasyDB easyDB = EasyDB.init(getActivity(), "ITEMS_DB") // "TEST" is the name of the DATABASE
.setTableName("ITEMS_TABLE") // You can ignore this line if you want
.addColumn(new Column("Item_Id", "text", "unique"))
.addColumn(new Column("Item_Name", "text", "not null"))
.addColumn(new Column("Item_Price", "text", "not null"))
.doneTableColumn();
Cursor res = easyDB.getAllData();
while (res.moveToNext()) {
String id = res.getString(1);
String name = res.getString(2);
String price = res.getString(3);
ModelMenu modelMenu = new ModelMenu("" + name, "" + price);
menuList1.add(modelMenu);
idList.add(ids);
nameList.add(name);
priceList.add(price);
ids++;
}
onAddField(getActivity());
myAdapters = new MyAdapters(getActivity(), menuList1);
recyclerView.setAdapter(myAdapters);
timePicker.setIs24HourView(true);
Calendar calendar = Calendar.getInstance();
final int hours = calendar.get(Calendar.HOUR_OF_DAY);
final int minute = calendar.get(Calendar.MINUTE);
final int year = calendar.get(Calendar.YEAR);
final int month = calendar.get(Calendar.MONTH) + 1;
final int day = calendar.get(Calendar.DAY_OF_MONTH);
date = day + "/" + month + "/" + year;
pickedTimeTv.setText(hours + ":" + minute);
pickedDateTv.setText(day + "/" + month + "/" + year);
timePicker.setHour(hours);
timePicker.setMinute(minute);
timePicker.setOnTimeChangedListener(new TimePicker.OnTimeChangedListener() {
#Override
public void onTimeChanged(TimePicker timePicker, int hour, int minute) {
pickedTimeTv.setText(hour + ":" + minute);
}
});
}
Have you tried overriding onStop() in your Activities?
onStop() is called when your app is no longer visible to the user (i.e. pressing Home). You will next receive either onRestart(), onDestroy(), or nothing. This may explain your inconsistent behaviour.
You will likely need to take control and stop any updates to UI elements especially here, and then preserve the state of the UI as the user left it with onSaveInstanceState()
https://developer.android.com/topic/libraries/architecture/saving-states
I'm having a problem changing a TextView to a ListView. Originally, the app had a button that when clicked, runs tests to a bluetooth device and displays the results in a textview. I modified the app to contain two textviews that have the last text results and a separate xml file (connected with viewflipper) to go to a second textview that contains all of the test results, until the user clears the textview by clicking a button. I followed along with this example and checked what I was entering in the ArrayAdapter section of the code, and it appears to be what is required according to the developer's guide, but I still get his error:
Cannot resolve constructor 'ArrayAdapter(com.example.android.stardustscanner.ScannerFragment, int, int, java.lang.String)'
Why am I getting this error?
My .java file that I am making all the changes in is very long and contains a lot of thins that aren't relevant to this question and doesn't fit in the question box, so I'll try to only include the relevant parts. The error is towards the bottom with this line:
ArrayAdapter<String> arrayAdapter = new ArrayAdapter<String>(this, R.layout.fragment_bluetooth_scanner, R.id.textView, saveData);
ScannerFragment.java
public class ScannerFragment extends Fragment implements LocationListener {
ListView mListView;
//page switching things KG 8/24/17
private ViewFlipper mViewFlipper;
private float lastX;
private Button mViewLog;
private Button mReturnFlipper;
private TextView mShowData;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
#Override
public View onCreateView(LayoutInflater inflater, #Nullable ViewGroup container,
#Nullable Bundle savedInstanceState) {
return inflater.inflate(R.layout.flipper_holder, container, false);//kg 8/24/17
}
#Override
public void onViewCreated(View view, #Nullable Bundle savedInstanceState) {
SP = PreferenceManager.getDefaultSharedPreferences(getContext());
mViewFlipper = (ViewFlipper) view.findViewById(R.id.viewFlip); //KG 8/24/17
mViewLog = (Button) view.findViewById(R.id.viewLog); //kg 8/24/17
mReturnFlipper = (Button) view.findViewById(R.id.flipperReturn); //kg 8/24/17
mShowData = (TextView) view.findViewById(R.id.textView) ; //kg 8/25/2017
mShowData.setText(readFromFile()); // kg 8/25/2017
mPowerOffButton = (Button) view.findViewById(R.id.button_poweroff);
mDisconnectButton = (Button) view.findViewById(R.id.button_disconnect);
mConnectButton = (Button) view.findViewById(R.id.button_connect);
mPresence = (Button) view.findViewById(R.id.button_present);
mBattery = (ProgressBar) view.findViewById(R.id.progressBar);
mBlinkConnect = (Button) view.findViewById(R.id.button_connectionblink);
mBlinkData = (Button) view.findViewById(R.id.button_communication);
mClearLog = (Button) view.findViewById(R.id.button_clear_log);
mDeviceName = (Button) view.findViewById(R.id.button_devicename);
mDeviceSN = (Button) view.findViewById(R.id.button_devicesn);
mBatteryPerc = (TextView) view.findViewById(R.id.label_batterypct);
mListView = (ListView) view.findViewById(R.id.scanLogView); //kg 8/28/17
// mReadingLog = (TextView) view.findViewById(R.id.scanLogView);
mReadingLog.setMovementMethod(new ScrollingMovementMethod());
mReadingLog.setText(readFromFile());
telephonyManager = (TelephonyManager)getContext().getSystemService(Context.TELEPHONY_SERVICE);
initLocationService(this.getContext());
final ActionBar actionBar = getActivity().getActionBar();
if (null == actionBar) {
return;
}
final Drawable D = getResources().getDrawable(R.drawable.stardust2);
actionBar.setBackgroundDrawable(D);
actionBar.setTitle("");
//KG 8/24/17
mViewLog.setOnClickListener(new View.OnClickListener(){
#Override
public void onClick(View view){
mViewFlipper.showNext();
}
});
mReturnFlipper.setOnClickListener(new View.OnClickListener(){
#Override
public void onClick(View view){
mViewFlipper.showPrevious();
}
});
}
private void setupScanner() {
Log.d(TAG, "setupScanner()");
// Initialize the send button with a listener that for click events
mPowerOffButton.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
if(isIris) {
publishMessage(Constants.COMMAND_POWEROFF_IRIS);
} else {
publishMessage(Constants.COMMAND_POWEROFF);
}
mScannerService.stop();
}
});
// Initialize the send button with a listener that for click events
mDisconnectButton.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
// Send a message using content of the edit text widget
publishMessage(Constants.COMMAND_DISCONNECT);
mScannerService.stop();
}
});
// Initialize the send button with a listener that for click events
mConnectButton.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
// Send a message using content of the edit text widget
publishMessage(Constants.COMMAND_ON_CONNECT);
}
});
mClearLog.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
// Send a message using content of the edit text widget
mReadingLog.setText("");
if(SP.getBoolean("writeToFile", true)) {
writeToFile("", "", false);
}
}
});
// Initialize the ScannerService to perform bluetooth connections
mScannerService = new ScannerService(getActivity(), mHandler);
}
private TextView.OnEditorActionListener mWriteListener
= new TextView.OnEditorActionListener() {
public boolean onEditorAction(TextView view, int actionId, KeyEvent event) {
// If the action is a key-up event on the return key, send the message
if (actionId == EditorInfo.IME_NULL && event.getAction() == KeyEvent.ACTION_UP) {
String message = view.getText().toString();
publishMessage(message);
}
return true;
}
};
private final Handler mHandler = new Handler() {
#Override
public void handleMessage(Message msg) {
FragmentActivity activity = getActivity();
switch (msg.what) {
case Constants.MESSAGE_STATE_CHANGE:
switch (msg.arg1) {
case ScannerService.STATE_CONNECTED:
setStatus(mConnectedDeviceName);
if(mConnectedDeviceName.substring(0, 4).toLowerCase().equals("iris") || mConnectedDeviceName.substring(0, 8).toLowerCase().equals("stardust")) {
isIris = true;
mPresence.setClickable(true);
mPresence.setText("Click to detect taggant");
mPresence.setBackgroundColor(Color.parseColor("#0061ff"));
mPresence.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
readoutStarted = true;
publishMessage(Constants.COMMAND_RUN_IRIS);
}
});
mPowerOffButton.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
publishMessage(Constants.COMMAND_POWEROFF_IRIS);
mScannerService.stop();
}
});
} else {
isIris = false;
}
if(!isIris) {
mPresence.setClickable(false);
mPresence.setText("NO TAGGANT DETECTED");
mPresence.setBackgroundColor(Color.parseColor("#ffc4ab"));
publishMessage(Constants.COMMAND_ON_CONNECT);
timer = new Timer();
timerStarted = true;
timer.scheduleAtFixedRate(new TimerTask() {
synchronized public void run() {
publishMessage(Constants.COMMAND_READDATA);
}
}, 1000, 1000);
} else {
if(timerStarted) {
timer.cancel();
timer.purge();
timerStarted = false;
}
}
mBlinkConnect.setBackgroundColor(Color.parseColor("#11D901"));
break;
case ScannerService.STATE_CONNECTING:
setStatus("C");
break;
case ScannerService.STATE_LISTEN:
case ScannerService.STATE_NONE:
mBlinkConnect.setBackgroundColor(Color.parseColor("#ff2b0f"));
mBlinkData.setBackgroundColor(Color.parseColor("#CCCCCC"));
if(timerStarted) {
timer.cancel();
timer.purge();
timerStarted = false;
}
setStatus("D");
break;
}
break;
case Constants.MESSAGE_WRITE:
mBlinkData.setBackgroundColor(Color.parseColor("#CCCCCC"));
break;
case Constants.MESSAGE_READ:
mBlinkData.setBackgroundColor(Color.parseColor("#0091FA"));
String readMessage = (String)msg.obj;
if(isIris) {
readIris(readMessage);
} else {
readNormal(readMessage);
}
break;
case Constants.MESSAGE_DEVICE_NAME:
// save the connected device's name
mConnectedDeviceName = msg.getData().getString(Constants.DEVICE_NAME);
if (null != activity) {
Toast.makeText(activity, "Connected to "
+ mConnectedDeviceName, Toast.LENGTH_SHORT).show();
}
break;
case Constants.MESSAGE_TOAST:
if (null != activity) {
Toast.makeText(activity, msg.getData().getString(Constants.TOAST),
Toast.LENGTH_SHORT).show();
}
break;
}
}
};
public void onActivityResult(int requestCode, int resultCode, Intent data) {
switch (requestCode) {
case REQUEST_CONNECT_DEVICE_SECURE:
// When DeviceListActivity returns with a device to connect
if (resultCode == Activity.RESULT_OK) {
connectDevice(data, true);
}
break;
case REQUEST_CONNECT_DEVICE_INSECURE:
// When DeviceListActivity returns with a device to connect
if (resultCode == Activity.RESULT_OK) {
connectDevice(data, false);
}
break;
case REQUEST_ENABLE_BT:
// When the request to enable Bluetooth returns
if (resultCode == Activity.RESULT_OK) {
// Bluetooth is now enabled, so set up a session
setupScanner();
} else {
// User did not enable Bluetooth or an error occurred
Log.d(TAG, "BT not enabled");
Toast.makeText(getActivity(), R.string.bt_not_enabled_leaving,
Toast.LENGTH_SHORT).show();
getActivity().finish();
}
}
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case R.id.secure_connect_scan: {
// Launch the DeviceListActivity to see devices and do scan
Intent serverIntent = new Intent(getActivity(), DeviceListActivity.class);
startActivityForResult(serverIntent, REQUEST_CONNECT_DEVICE_SECURE);
return true;
}
/*case R.id.insecure_connect_scan: {
// Launch the DeviceListActivity to see devices and do scan
Intent serverIntent = new Intent(getActivity(), DeviceListActivity.class);
startActivityForResult(serverIntent, REQUEST_CONNECT_DEVICE_INSECURE);
return true;
}*/
case R.id.settings_button: {
Intent serverIntent = new Intent(getActivity(), SettingsActivity.class);
startActivityForResult(serverIntent, REQUEST_SHOW_SETTINGS);
return true;
}
}
return false;
}
/**
*
* #param data String
* #param append boolean
*/
private void writeToFile(String data, String uploadData, boolean append) {
String root = Environment
.getExternalStorageDirectory().toString();
File myDir = new File(root);
String fname = "starDust.txt";
String fname2 = "starDust.csv";
File file = new File (myDir, fname);
File file2 = new File (myDir, fname2);
//if (file.exists ()) file.delete ();
try {
FileOutputStream out = new FileOutputStream(file, append);
out.write(data.getBytes(), 0, data.getBytes().length);
out.flush();
out.close();
FileOutputStream out2 = new FileOutputStream(file2, append);
out2.write(uploadData.getBytes(), 0, uploadData.getBytes().length);
out2.flush();
out2.close();
if(mConnectedDeviceName != null) {
Log.d(TAG, "Connecting " + SP.getString("server_ip", "") + SP.getString("server_username", "") + SP.getString("server_password", ""));
new FTPUploadTask().execute(mConnectedDeviceName, SP.getString("server_ip", ""), SP.getString("server_username", "") , SP.getString("server_password", ""));
}
} catch (Exception e) {
e.printStackTrace();
}
}
/**
*
*/
private String readFromFile() {
String root = Environment
.getExternalStorageDirectory().toString();
File myDir = new File(root);
String fname = "starDust.txt";
File file = new File (myDir, fname);
StringBuilder text = new StringBuilder();
if (file.exists ()) {
try {
BufferedReader br = new BufferedReader(new FileReader(file));
String line;
while ((line = br.readLine()) != null) {
text.insert(0, line + System.getProperty("line.separator"));
}
br.close();
} catch (Exception e) {
}
}
return text.toString();
}
private void readNormal(String readMessage) {
String parsedData[];
if(readMessage.contains(";")) {
if(readMessage.equals(";")) {
parsedData = bufferedMessage.trim().split(",");
bufferedMessage = "";
} else {
String partialMessage[] = readMessage.split(";");
bufferedMessage += partialMessage[0];
parsedData = bufferedMessage.trim().split(",");
if (partialMessage.length > 1) {
bufferedMessage = partialMessage[1];
} else {
bufferedMessage = "";
}
}
} else {
bufferedMessage += readMessage.trim();
return;
}
if(parsedData.length == RESPONSE_SIZE && parsedData[0].equals("U")) {
if(parsedData[1].matches("[-+]?\\d*\\.?\\d+")) {
if(Integer.parseInt(parsedData[1]) > maxU1 || hitTrigger) {
maxU1 = Integer.parseInt(parsedData[1]);
}
}
if(parsedData[2].matches("[-+]?\\d*\\.?\\d+")) {
if(Integer.parseInt(parsedData[2]) > maxU2 || hitTrigger) {
maxU2 = Integer.parseInt(parsedData[2]);
}
}
if(parsedData[3].matches("[-+]?\\d*\\.?\\d+")) {
if(Integer.parseInt(parsedData[3]) > maxU3 || hitTrigger) {
maxU3 = Integer.parseInt(parsedData[3]);
}
}
double u1val = Double.parseDouble(parsedData[1]);
double u2val = Double.parseDouble(parsedData[2]);
double u1u2div = 0;
if(u2val > 0) {
u1u2div = ((u1val / u2val) * KFactor);
}
if(parsedData[4].matches("[-+]?\\d*\\.?\\d+")) {
mBatteryPerc.setText(parsedData[4] + "%");
mBattery.setProgress(Integer.parseInt(parsedData[4]));
}
}
taggantType = 0;
if(maxU1 > Integer.parseInt(SP.getString("maxThreshold", Integer.toString(MAX_TRIGGER)))) {
taggantType += 4;
} else {
taggantType += 0;
}
if(maxU2 > Integer.parseInt(SP.getString("maxThreshold", Integer.toString(MAX_TRIGGER)))) {
taggantType += 2;
} else {
taggantType += 0;
}
if(maxU3 > Integer.parseInt(SP.getString("maxThreshold", Integer.toString(MAX_TRIGGER)))) {
taggantType += 1;
} else {
taggantType += 0;
}
Log.d(TAG, Integer.toString(taggantType));
Log.d(TAG, Boolean.toString(hitTrigger));
Log.d(TAG, bufferedMessage);
// Check if hit threshold, if so hitTrigger is enabled.
if(taggantType > 0) {
savedTaggantType = taggantType;
hitTrigger = true;
mPresence.setText("VALID TAGGANT DETECTED");
mPresence.setBackgroundColor(Color.parseColor("#11D901"));
} else if(taggantType == 0 && hitTrigger) {
hitTrigger = false;
mPresence.setText("NO TAGGANT DETECTED");
mPresence.setBackgroundColor(Color.parseColor("#ffc4ab"));
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
String currentDateandTime = sdf.format(new Date());
String saveData =
"Device: " + mConnectedDeviceName +
System.getProperty("line.separator") +
"Timestamp: " + currentDateandTime +
System.getProperty("line.separator") +
"Location: " + latitude + " (lat) / " + longitude + " (lon)" +
System.getProperty("line.separator") +
"Taggan Type: N" + Integer.toString(savedTaggantType) +
System.getProperty("line.separator") +
"Phone id: " + telephonyManager.getDeviceId() +
System.getProperty("line.separator") +
"=========================" +
System.getProperty("line.separator");
String csvData = mConnectedDeviceName + "," +
currentDateandTime + "," +
"\"http://maps.google.com/?q=" + latitude + "," + longitude + "\"," +
"N" + Integer.toString(savedTaggantType) + "," +
"\"" + telephonyManager.getDeviceId() + "\"" +
System.getProperty("line.separator");
mReadingLog.setText(saveData + mReadingLog.getText());
mShowData.setText(saveData); //kg 8/25/17
maxU1 = 0;
maxU2 = 0;
maxU3 = 0;
savedTaggantType = 0;
if(SP.getBoolean("writeToFile", true)) {
writeToFile(saveData, csvData, true);
}
}
}
/**
* #param readMessage String
*/
public void readIris(String readMessage) {
if(!readoutStarted) {
return;
}
String parsedData[];
if(readMessage.contains(";")) {
readoutStarted = false;
if(readMessage.equals(";")) {
parsedData = bufferedMessage.replaceAll("\n", "").replaceAll(" +", " ").trim().split("\\*");
bufferedMessage = "";
} else {
String partialMessage[] = readMessage.replaceAll("\n", "").replaceAll(" +", " ").trim().split(";");
bufferedMessage += partialMessage[0].trim();
parsedData = bufferedMessage.replaceAll("\n", "").replaceAll(" +", " ").trim().split("\\*");
bufferedMessage = "";
}
} else {
bufferedMessage += readMessage.trim().replaceAll("\n", "").replaceAll(" +", " ");
return;
}
Log.d(TAG, Arrays.toString(parsedData));
boolean passed = false;
int v1 = 0;
int v2 = 0;
if(parsedData[3].equals("S")) {
passed = true;
String values[] = parsedData[7].split("\\s+");
v1 = Integer.parseInt(values[0].replaceAll("[\\D]", ""));
v2 = Integer.parseInt(values[values.length-1]);
} else {
Log.d(TAG, Arrays.toString(parsedData));
String values[] = parsedData[5].split("\\s+");
v1 = Integer.parseInt(values[0].replaceAll("[\\D]", ""));
v2 = Integer.parseInt(values[values.length-1]);
}
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
String currentDateandTime = sdf.format(new Date());
String saveData =
"Device: " + mConnectedDeviceName +
System.getProperty("line.separator") +
"Timestamp: " + currentDateandTime +
System.getProperty("line.separator") +
"Location: " + latitude + " (lat) / " + longitude + " (lon)" +
System.getProperty("line.separator") +
"Phone id: " + telephonyManager.getDeviceId() +
System.getProperty("line.separator") +
"Valid:" + (passed ? "YES" : "NO") +
System.getProperty("line.separator") +
"Values: " + "T" + v1 + " / " + v2 +
System.getProperty("line.separator") +
"=========================" +
System.getProperty("line.separator");
String csvData = mConnectedDeviceName + "," +
currentDateandTime + "," +
"\"http://maps.google.com/?q=" + latitude + "," + longitude + "\"," +
"Valid: " + (passed ? "YES" : "NO") + " - " + "T" + v1 + " / " + v2 + Integer.toString(savedTaggantType) + "," +
"\"" + telephonyManager.getDeviceId() + "\"" +
System.getProperty("line.separator");
ArrayAdapter<String> arrayAdapter = new ArrayAdapter<String>(this, R.layout.fragment_bluetooth_scanner, R.id.textView, saveData);
mListView.setAdapter(arrayAdapter);
mReadingLog.setText(saveData + mReadingLog.getText());
mShowData.setText(saveData); //kg 8/25/17
if(SP.getBoolean("writeToFile", true)) {
writeToFile(saveData, csvData, true);
}
}
}
I have three xml files associated with this problem, but because of space I'll only include the one that contains the ListView and remove the other buttons.
view_list.xml contains the ListView:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:id="#+id/viewList"
android:layout_width="match_parent"
android:layout_height="match_parent">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="fill_parent"
android:layout_gravity="center_horizontal"
android:paddingLeft="4dp"
android:paddingRight="4dp"
android:visibility="visible">
<LinearLayout
android:layout_width="match_parent"
android:id="#+id/listview_holder"
android:layout_alignParentTop="true"
android:layout_alignTop="#id/button_holder"
android:layout_weight=".1"
android:layout_height="wrap_content">
<ListView
android:id="#+id/scanLogView"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:maxLines="4096"
android:scrollbars="vertical"
android:text="#string/app_name"
android:textAppearance="?android:attr/textAppearanceSmall"/>
</LinearLayout>
</RelativeLayout>
</LinearLayout>
The error was with ArrayAdapter. I changed the decloration from
ArrayAdapter<String> arrayAdapter = new ArrayAdapter<String>(this,
R.layout.fragment_bluetooth_scanner, R.id.textView, saveData);
to
ArrayAdapter<String> adapter = new ArrayAdapter<String>(getActivity(),
android.R.layout.simple_list_item_1, android.R.id.text1, listItems);
It now builds the project and displays the listview.
how can i create progress bar UI that appear during PDF creation and that stop when PDF creation is finished?
TwoFragment.java
public class TwoFragment extends Fragment{
private View v;
Intent chooser=null;
String myInt="";
public TwoFragment() {
// Required empty public constructor
}
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View rootView = inflater.inflate(R.layout.fragment_two, container, false);
Button mButton = (Button) rootView.findViewById(R.id.newbutton);
mButton.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
//sendemail();
createPDF();
viewPDF();
}
});
TextView titolo3 = (TextView)rootView.findViewById(R.id.result);
TextView titolo2 = (TextView)rootView.findViewById(R.id.result2);
TextView titolo4 = (TextView)rootView.findViewById(R.id.resultpizze);
//TextView titolo = (TextView)rootView.findViewById(R.id.quantità3);
/* Bundle bundle2=getArguments();
if(bundle2 != null){
String string = bundle2.getString("scelta2", null);
titolo3.setText(string);
}*/
Bundle bundle2=getArguments();
if(bundle2 != null){
myInt = bundle2.getString("scelta2", null);
titolo3.setText(myInt);
}
Bundle bundle3=getArguments();
if(bundle3 != null){
// String myInt3 = bundle3.getString("totalebirre", null);
// cazzo2=Integer.parseInt(myInt3);
int cazzo2=bundle3.getInt("totalebirre");
titolo2.setText(String.valueOf(cazzo2));
}
Bundle bundle=getArguments();
if(bundle != null){
// String myInt2 = bundle2.getString("totalepizze", null);
// cazzo=Integer.parseInt(myInt2);
//titolo2.setText(myInt2);
String string=bundle.getString("scelta3", null);
titolo4.setText(string);
}
return rootView;
}
/* public void sendemail(){
Intent intent = new Intent(Intent.ACTION_SEND);
intent.setData(Uri.parse("mailto:"));
String[] to={"marco_marcoletto#hotmail.it"};
intent.putExtra(Intent.EXTRA_EMAIL,to);
intent.putExtra(Intent.EXTRA_SUBJECT, "ciao");
intent.putExtra(Intent.EXTRA_TEXT, "zao");
intent.setType("message/rfc822");
chooser=intent.createChooser(intent,"manda email");
startActivity(chooser);
}*/
public void createPDF() {
Document doc = new Document();
try {
String path = Environment.getExternalStorageDirectory()
.getAbsolutePath() + "/droidText";
File dir = new File(path);
if (!dir.exists())
dir.mkdirs();
Log.d("PDFCreator", "PDF Path: " + path);
File file = new File(dir, "sample.pdf");
FileOutputStream fOut = new FileOutputStream(file);
PdfWriter.getInstance(doc, fOut);
// open the document
doc.open();
ByteArrayOutputStream stream = new ByteArrayOutputStream();
Bitmap bitmap = BitmapFactory.decodeResource(getContext()
.getResources(), R.drawable.androtuto);
bitmap.compress(Bitmap.CompressFormat.JPEG, 100, stream);
Image myImg = Image.getInstance(stream.toByteArray());
myImg.setAlignment(Image.MIDDLE);
// add image to document
doc.add(myImg);
Paragraph p1 = new Paragraph(myInt);
Log.d("ciao",myInt);
Font paraFont = new Font(Font.COURIER);
p1.setAlignment(Paragraph.ALIGN_CENTER);
p1.setFont(paraFont);
// add paragraph to document
doc.add(p1);
Paragraph p2 = new Paragraph("Ciao");
Font paraFont2 = new Font(Font.COURIER, 14.0f, Color.GREEN);
p2.setAlignment(Paragraph.ALIGN_CENTER);
p2.setFont(paraFont2);
doc.add(p2);
stream = new ByteArrayOutputStream();
bitmap = BitmapFactory.decodeResource(getContext()
.getResources(), R.drawable.android);
bitmap.compress(Bitmap.CompressFormat.JPEG, 100, stream);
myImg = Image.getInstance(stream.toByteArray());
myImg.setAlignment(Image.MIDDLE);
// add image to document
doc.add(myImg);
// set footer
Phrase footerText = new Phrase("Pied de page ");
HeaderFooter pdfFooter = new HeaderFooter(footerText, false);
doc.setFooter(pdfFooter);
} catch (DocumentException de) {
Log.e("PDFCreator", "DocumentException:" + de);
} catch (IOException e) {
Log.e("PDFCreator", "ioException:" + e);
} finally {
doc.close();
}
}
public void viewPDF(){
String path = "/sdcard/droidText/sample.pdf";
File targetFile = new File(path);
Uri targetUri = Uri.fromFile(targetFile);
Intent intent;
intent = new Intent(Intent.ACTION_VIEW);
intent.setDataAndType(targetUri, "application/pdf");
startActivity(intent);
}
}
ThreeFragment.java
FRAGMENT FROM WHERE I PASS VARIABLES:
public class ThreeFragment extends Fragment implements
android.widget.CompoundButton.OnCheckedChangeListener {
ListView lv2;
ArrayList<Planet> planetList;
ListView lv;
ArrayList<Birra> birraList;
BirraAdapter biAdapter;
PlanetAdapter plAdapter;
Planet p;
String myInt="";
PlanetAdapter.PlanetHolder holder;
public ThreeFragment() {
// Required empty public constructor
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
final ViewGroup rootView = (ViewGroup) inflater.inflate(R.layout.fragment_three, container, false);
Button mButton = (Button) rootView.findViewById(R.id.button2);
mButton.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
MyListFragment mlf=new MyListFragment();
mlf.showResult(v);
// MyListFragment.showResult(v);
showResult2(v);
}
});
//return inflater.inflate(R.layout.fragment_list2, container, false);
return rootView;
}
#Override
public void onViewCreated(View view, #Nullable Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
lv2 = (ListView) getView().findViewById(R.id.listview2);
displayBirraList();
}
private void displayBirraList() {
birraList = new ArrayList<Birra>();
birraList.add(new Birra("Paulaner", 6, "€"));
birraList.add(new Birra("Forst", 7, "€"));
birraList.add(new Birra("Peroni", 5, "€"));
birraList.add(new Birra("Corona", 5, "€"));
birraList.add(new Birra("Nastro Azzurro", 4, "€"));
biAdapter = new BirraAdapter(birraList, getContext()) {
#Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
int pos = lv2.getPositionForView(buttonView);
if (pos != ListView.INVALID_POSITION) {
Birra b = birraList.get(pos);
b.setSelected(isChecked);
/*Toast.makeText(
getActivity(),
"Clicked on Pizza: " + p.getName() + ". State: is "
+ isChecked, Toast.LENGTH_SHORT).show();*/
}
}
};
lv2.setAdapter(biAdapter);
}
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
/*int pos = lv.getPositionForView(buttonView);
if (pos != ListView.INVALID_POSITION) {
Planet p = planetList.get(pos);
p.setSelected(isChecked);
*//**//**//**//*Toast.makeText(
getActivity(),
"Clicked on Planet: " + p.getName() + ". State: is "
+ isChecked, Toast.LENGTH_SHORT).show();*//**//**//**//*
}
*/
}
public void showResult2(View v) {
String result = "Selected Product are :";
int totalAmount = 0;
// String a = "";
for (Birra b : biAdapter.getBox()) {
if (b.selected) {
result += "\n" + b.name + " " + b.distance + "€" + "q.tà :" + b.getQuantità();
int quantitaInt = Integer.parseInt(b.getQuantità());
totalAmount += b.distance * quantitaInt;
// a=String.valueOf(totalAmount);
}
}
/* for (Planet p : plAdapter.getBox()) {
if (p.isSelected()) {
result += "\n" + p.getName() + " " + p.getDistance() + "€" + "q.tà :" + p.getQuantità();
int quantitaInt = Integer.parseInt(p.getQuantità());
//totalAmount2+=p.distance * quantitaInt;
//z=String.valueOf(totalAmount2);
}
}*/
Toast.makeText(getActivity(), result + "\n" +myInt + "\n" + "Total Amount:=" + totalAmount + "€", Toast.LENGTH_LONG).show();
Bundle bun2 = new Bundle();
bun2.putString("scelta2", result);
TwoFragment fgsearch2 = new TwoFragment();
fgsearch2.setArguments(bun2);
android.support.v4.app.FragmentTransaction transaction2 = getActivity().getSupportFragmentManager().beginTransaction();
transaction2.replace(R.id.content_main, fgsearch2);
transaction2.commit();
Bundle bun = new Bundle();
// bun.putString("totalebirre", a);
bun.putInt("totalebirre", totalAmount);
TwoFragment fgsearch = new TwoFragment();
fgsearch.setArguments(bun);
android.support.v4.app.FragmentTransaction transaction = getActivity().getSupportFragmentManager().beginTransaction();
transaction.replace(R.id.content_main2, fgsearch);
transaction.commit();
}
}
Step 1 - Declare a global variable - private ProgressBar pdfProgress;
Step 2 - Create a progress bar widget in your respective layour.xml(fragment_two) and give it an id.
Step 3 - In onCreate() method of TwoFragment, write this code just after defining the rootView.
pdfProgress = (ProgressBar)rootView.findViewById(R.id."your progress bar id");
Step 4 - just above createPDF(); write this -
pdfProgress.setVisibility(View.VISIBLE);
Step 5 - just below createPDF(); write this -
pdfProgress.setVisibility(View.GONE);
**
Updated Answer
**
Try this code in your TwoFragment - onClick()-
Button mButton = (Button) rootView.findViewById(R.id.newbutton);
ProgressBar pdfProgress = (ProgressBar) rootView.findViewById(R.id.progressBar);
mButton.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
//sendemail();
pdfProgress.setVisibility(View.VISIBLE);
createPDF();
pdfProgress.setVisibility(View.GONE);
viewPDF();
}
});
The fragment_two.xml (your fragment layout xml) must contain a progress bar that looks like this - (you can add drawables too, might wanna look at a tutorial for that)
<ProgressBar
style="?android:attr/progressBarStyleLarge"
android:layout_width="50dp"
android:layout_height="50dp"
android:id="#+id/progressBar"/>
I am a new guy to android development. I have created a SMS Inbox application.
I managed to get the SMS Inbox of the phone. Now I want to set a onclick method to open a specific message in a new activity with the phone number and the message.
Here is the code for my inbox activity. I do not understand, the place to put my onclicklistitem method.
public class MessageInboxActivity extends ActionBarActivity implements OnItemClickListener {
private static MessageInboxActivity inst;
ArrayList<String> smsMessagesList = new ArrayList<String>();
ListView smsListView;
ArrayAdapter arrayAdapter;
public static MessageInboxActivity instance() {
return inst;
}
#Override
public void onStart() {
super.onStart();
inst = this;
}
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_message_inbox);
smsListView = (ListView) findViewById(R.id.SMSList);
arrayAdapter = new ArrayAdapter<String>(this, R.layout.my_adapter_item, R.id.product_name, smsMessagesList);
smsListView.setAdapter(arrayAdapter);
smsListView.setOnItemClickListener(this);
refreshSmsInbox();
}
public void refreshSmsInbox() {
ContentResolver contentResolver = getContentResolver();
Cursor smsInboxCursor = contentResolver.query(Uri.parse("content://sms/inbox"), null, null, null, null);
int indexBody = smsInboxCursor.getColumnIndex("body");
int indexAddress = smsInboxCursor.getColumnIndex("address");
if (indexBody < 0 || !smsInboxCursor.moveToFirst()) return;
arrayAdapter.clear();
do {
String str = "SMS From: " + smsInboxCursor.getString(indexAddress) +
"\n" + smsInboxCursor.getString(indexBody) + "\n";
arrayAdapter.add(str);
} while (smsInboxCursor.moveToNext());
}
public void updateList(final String smsMessage) {
arrayAdapter.insert(smsMessage, 0);
arrayAdapter.notifyDataSetChanged();
}
public void onItemClick(AdapterView<?> parent, View view, int pos, long id) {
try {
String[] smsMessages = smsMessagesList.get(pos).split("\n");
String address = smsMessages[0];
String smsMessage = "";
for (int i = 1; i < smsMessages.length; ++i) {
smsMessage += smsMessages[i];
}
String smsMessageStr = address + "\n";
smsMessageStr += smsMessage;
Toast.makeText(this, smsMessageStr, Toast.LENGTH_SHORT).show();
} catch (Exception e) {
e.printStackTrace();
}
}
}
Can someone help me to start new activity with the phone number and the message.
I'd put this in a comment but I can't comment, can you clarify your problem? What activity are you trying to link to and what exactly do you want to achieve? it seems like you just need to add to your onItemClick()
String smsMessageStr = address + "\n";
smsMessageStr += smsMessage;
Intent in = new Intent(getApplicationContext,/*whatever activity you want to open*/);
in.putStringExtra(/*some static keystring*/,smsMessage);
startActivity(in);
but it's hard to say for sure without knowing more
I am writing a simple application to scan and record WiFi Access Points, there are three options; a single scan, 10 scans, or scan for a period of time.
When I enter my nWiFiScans activity it preforms the scans, records the file and STARTS THE ACTIVITY AGAIN!!!
WHY WOULD IT DO THIS???
nWiFiScans.java
public class nWiFiScans extends Activity
{
//declarations
public static String pntNameStr;
public static int numScans;
public static int scansMin;
LinearLayout layout1;
ScrollView scrollLayout;
TextView label1;
EditText n1Text;
EditText n2Text;
LayoutParams params_layout1;
WifiManager mainWifi = null;
WifiReceiver receiverWifi;
List<ScanResult> wifiList;
StringBuilder sb = new StringBuilder();
Intent intent;
SimpleDateFormat time;
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
scrollLayout = new ScrollView(this);
scrollLayout.setBackgroundColor(Color.BLUE);
//Create new layout in "this" activity
params_layout1 = new LayoutParams(LayoutParams.MATCH_PARENT,LayoutParams.MATCH_PARENT, 1);
layout1 = new LinearLayout(this);
layout1.setBackgroundColor(Color.RED);
layout1.setLayoutParams(params_layout1);
//Create TextView in "this" activity
label1 = new TextView(this);
label1.setBackgroundColor(Color.YELLOW);
//Put some text in the TextView
// Get the message from the intent
intent = getIntent();
pntNameStr = intent.getStringExtra(MainActivity.EXTRA_pntNameStr);
numScans = intent.getIntExtra(MainActivity.EXTRA_numScans, 1);
label1.setText(pntNameStr);
//Place the TextView inside the Layout
layout1.addView(label1);
layout1.setOrientation(LinearLayout.VERTICAL);
//scrollLayout.addView(label1);
//layout1.addView(n1Text);
//layout1.addView(n2Text);
//By default the layout is set to HOR, so we change it to VERT orientation:
// Display layout1 when the activity is created:
setContentView(layout1);
mainWifi = (WifiManager) getSystemService(Context.WIFI_SERVICE);
checkIfWifiIsOn(mainWifi);
receiverWifi = new WifiReceiver();
registerReceiver(receiverWifi, new IntentFilter(WifiManager.SCAN_RESULTS_AVAILABLE_ACTION));
mainWifi.startScan();
label1.setText("Starting Scan..."+String.valueOf(numScans));
}
public void checkIfWifiIsOn(WifiManager mainWifi)
{
if (mainWifi.isWifiEnabled() == false)
{
// If wifi disabled then enable it
Toast.makeText(getApplicationContext(), "wifi is disabled..making it enabled",
Toast.LENGTH_LONG).show();
mainWifi.setWifiEnabled(true);
}
else {Toast.makeText(getApplicationContext(), "wifi is enabled... thats good...",
Toast.LENGTH_SHORT).show();}
}
public void generateNoteOnSD(String sFileName, String sBody)
{
File root = null;
try
{
root = new File(Environment.getExternalStoragePublicDirectory("SurveyAppData"), "ScanResults");
if (!root.exists())
{
root.mkdirs();
}
File gpxfile = new File(root, sFileName);
FileWriter writer = new FileWriter(gpxfile);
writer.append(sBody);
writer.flush();
writer.close();
Toast.makeText(this, "Saved" + "/n" +root.toURI(), Toast.LENGTH_LONG).show();
Toast.makeText(getApplicationContext(), "IM MOTHERFUCKING DONE" ,
Toast.LENGTH_SHORT).show();
//Log.d("Scan Results",sb.toString());
Intent i=new Intent(nWiFiScans.this, MainActivity.class);
i.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(i);
finish();
}
catch(IOException e)
{
e.printStackTrace();
Toast.makeText(this, "!!! - Could NOT Saved" + "/n" +root.toURI(), Toast.LENGTH_LONG).show();
}
}
public class WifiReceiver extends BroadcastReceiver
{
// This method call when number of wifi connections changed
long fisrtScanTS;
private String FILENAME = pntNameStr;
public FileOutputStream outputStream;
#SuppressLint("NewApi")
public void onReceive(Context c, Intent intent)
{
time = new SimpleDateFormat("ddMMyyyyhhmmss");
int ScanTime = numScans;
if(ScanTime==1 | ScanTime==10)
{
for (int scanNum = 1; scanNum<ScanTime+1; scanNum++)
{
wifiList = mainWifi.getScanResults();
for(int i = 0; i < wifiList.size(); i++)
{
sb.append(((wifiList.get(i)).BSSID + " " + (wifiList.get(i)).level + " " + (wifiList.get(i)).frequency + " "+ (wifiList.get(i)).timestamp + " "+ (wifiList.get(i)).SSID +" "+ time.format(new Date()) + "\n" ) );
fisrtScanTS = (wifiList.get(1)).timestamp;
}
do
{
mainWifi.startScan();
wifiList = mainWifi.getScanResults();
try{Thread.currentThread().sleep(200);}
catch(InterruptedException ie){
//If this thread was intrrupted by nother thread
}
} while(fisrtScanTS == (wifiList.get(1)).timestamp);
Toast.makeText(getApplicationContext(), "Scan number " + scanNum ,
Toast.LENGTH_SHORT).show();
}
}else if (ScanTime!=0)
{
Calendar timeNow = Calendar.getInstance();
Calendar timeEnd = Calendar.getInstance();
timeEnd.set(timeNow.YEAR, timeNow.MONTH, timeNow.DAY_OF_MONTH, timeNow.HOUR, timeNow.MINUTE+numScans, timeNow.SECOND);
while(!(timeNow.after(timeEnd))){
wifiList = mainWifi.getScanResults();
for(int i = 0; i < wifiList.size(); i++){
sb.append(((wifiList.get(i)).BSSID + " " + (wifiList.get(i)).level + " " + (wifiList.get(i)).frequency + " "+ (wifiList.get(i)).timestamp + " "+ (wifiList.get(i)).SSID +" "+ time.format(new Date()) + "\n" ) );
fisrtScanTS = (wifiList.get(1)).timestamp;
}
do {
mainWifi.startScan();
wifiList = mainWifi.getScanResults();
try{Thread.currentThread().sleep(200);}
catch(InterruptedException ie){
//If this thread was intrrupted by nother thread
}} while(fisrtScanTS == (wifiList.get(1)).timestamp);
timeNow = Calendar.getInstance();
Toast.makeText(getApplicationContext(), timeNow.getTime().toString() + " :: " + timeEnd.getTime().toString() ,
Toast.LENGTH_SHORT).show();
}
}
generateNoteOnSD(FILENAME, sb.toString());
FILENAME="x";
ScanTime=0;
}
}
}
MainActivity.java
public class MainActivity extends Activity
{
LinearLayout mainLayout,leftLayout,rightLayout;
EditText pointName;
EditText scanTime;
Button scan10, scan1, timedScan;
TextView msg;
LayoutParams paramsL,paramsR;
static final String EXTRA_pntNameStr = "com.example.surveyappv2.pntNameStr";
static final String EXTRA_scanTimeMin = "com.example.surveyappv2.scanTimeMin";
static final String EXTRA_numScans = "com.example.surveyappv2.numScans";
#Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
mainLayout = new LinearLayout(this);
mainLayout.setOrientation(LinearLayout.HORIZONTAL);
paramsL = new LayoutParams(500,LayoutParams.MATCH_PARENT, 1);
paramsR = new LayoutParams(500,LayoutParams.MATCH_PARENT, 1);
leftLayout = new LinearLayout(this);
leftLayout.setOrientation(LinearLayout.VERTICAL);
leftLayout.setLayoutParams(paramsL);
leftLayout.setGravity(Gravity.CENTER_HORIZONTAL);
leftLayout.setBackgroundColor(Color.YELLOW);
rightLayout = new LinearLayout(this);
rightLayout.setOrientation(LinearLayout.VERTICAL);
rightLayout.setLayoutParams(paramsR);
rightLayout.setGravity(Gravity.CENTER_HORIZONTAL);
rightLayout.setBackgroundColor(Color.BLUE);
scanTime = new EditText(this);
scanTime.setHint("Scan Duration (min)");
scanTime.setInputType(InputType.TYPE_CLASS_NUMBER);
pointName = new EditText(this);
pointName.setHint("Enter Point Name");
scan10 = new Button(this);
scan1 = new Button(this);
timedScan = new Button(this);
msg = new TextView(this);
scan10.setText("Do 10 Scans");
scan1.setText("Do a Single Scan");
timedScan.setText("Timed Scan");
msg.setText("Alec Sucks");
leftLayout.addView(pointName);
leftLayout.addView(scanTime);
rightLayout.addView(msg);
rightLayout.addView(scan10);
rightLayout.addView(scan1);
rightLayout.addView(timedScan);
mainLayout.addView(leftLayout);
mainLayout.addView(rightLayout);
mainLayout.setBackgroundColor(Color.RED);
setContentView(mainLayout);
setButtonClickListener();
}
private void setButtonClickListener()
{
scan10.setOnClickListener(new View.OnClickListener()
{
public void onClick(View v)
{
String message2 = "Button: \n" + scan10.getText();
msg.setText(message2);
startScan(mainLayout,10);
}
});
scan1.setOnClickListener(new View.OnClickListener()
{
public void onClick(View v)
{
String message2 = "Button: \n" + scan1.toString();
msg.setText(message2);
startScan(mainLayout,1);
}
});
timedScan.setOnClickListener(new View.OnClickListener()
{
public void onClick(View v)
{
String message2 = "Button: \n" + timedScan.toString();
msg.setText(message2);
startScan(mainLayout,Integer.parseInt(scanTime.getText().toString()));
}
});
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
public void startScan(View view, int numScans)
{
Intent intent = new Intent(this, nWiFiScans.class);
String pntNameStr = pointName.getText().toString();
intent.putExtra(EXTRA_pntNameStr, pntNameStr);
intent.putExtra(EXTRA_numScans, numScans);
startActivity(intent);
}
}
I ran it, removed the file creation and the Intent(You only need to call finish();) and then it worked. Have you checked that it actually goes through File creation for you? Because mine got stuck there and then it jumps out of try so it can't reach the finish(); call, I also called unregisterReceiver(receiverWifi); before finish();
EDIT, File creation:
File sdCard = Environment.getExternalStorageDirectory(); //returns sdcard directory
File dir = new File (sdCard.getAbsolutePath() + "/mydirectory");
dir.mkdirs();
File file = new File(dir, "filename");