Develop Reference

Add a dynamic button to the view and save it permanently

I have a fragment with this view:
XML:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:tag="general"
android:id="#+id/root"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#343535"
android:orientation="vertical"
tools:context=".fragments.GeneralFragment">
<Button
android:id="#+id/hello"
android:layout_width="match_parent"
android:layout_height="60dp"
android:gravity="center_vertical"
android:onClick="onClick"
android:text="#string/hello" />
<Button
android:id="#+id/observed"
android:layout_width="match_parent"
android:layout_height="60dp"
android:gravity="center_vertical"
android:onClick="onClick"
android:text="#string/observed" />
<Button
android:id="#+id/thanks"
android:layout_width="match_parent"
android:layout_height="60dp"
android:gravity="center_vertical"
android:onClick="onClick"
android:text="#string/thanks" />
</LinearLayout>
There are 3 buttons. Whenever you click on one of them, its text will be displayed.
Now I would like to add another button but dynamically. It should be added before #+id/hello.
I have tried it with
LinearLayout root = (LinearLayout) view.findViewById(R.id.root);
root.addView();
but it looks completely wrong since some parameters are missing.
For instance, the new button should be like:
XML:
<Button
android:layout_width="match_parent"
android:layout_height="60dp"
android:gravity="center_vertical"
android:onClick="onClick"
android:text="I am a dynamic text" />
This button should be saved permanently in the app. How can I do this?
Update
I am using a dialog, so this is the class:
#SuppressLint("ValidFragment")
public class Dialog extends DialogFragment {
private final int _layout;
private TextInputEditText _customTextField;
#SuppressLint("ValidFragment")
public Dialog(int layout) {
_layout = layout;
}
public interface ICustomTts {
void customTts(String input, Activity activity);
}
public ICustomTts iCustomTts;
public interface ITarget {
void getTarget(String input);
}
public ITarget iTarget;
#RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
#Nullable
#Override
public View onCreateView(LayoutInflater inflater, #Nullable ViewGroup container, Bundle savedInstanceState) {
final View view = inflater.inflate(_layout, container, false);
// Display fragment_custom
if (_layout == R.layout.fragment_custom) {
_customTextField = view.findViewById(R.id.customTextField);
Button _customBtn = view.findViewById(R.id.customCta);
_customBtn.setOnClickListener(new View.OnClickListener() {
#RequiresApi(api = Build.VERSION_CODES.M)
#Override
public void onClick(View view) {
Log.d(TAG, "onClick: Clicked on CTA of custom");
String input = _customTextField.getText().toString();
if (!input.equals("")) {
iCustomTts.customTts(input, getActivity());
_dismiss();
}
}
});
MaterialCheckBox customeSave = view.findViewById(R.id.customSave);
customeSave.setOnClickListener(new View.OnClickListener() {
#RequiresApi(api = Build.VERSION_CODES.M)
#Override
public void onClick(View v) {
Log.d(TAG, "customeSave was clicked!");
LinearLayout root = view.findViewById(R.id.root);
Button button = new Button(getContext());
float heightInPixel = 60 * getResources().getDisplayMetrics().density;
LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, (int) heightInPixel);
params.gravity = Gravity.CENTER;
button.setText("I am a dynamic text");
button.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
// Do the stuff on the click
}
});
root.addView(button, 0);
}
});
}
// Display fragment_target
if (_layout == R.layout.fragment_target) {
_customTextField = view.findViewById(R.id.targetTextField);
Button _customBtn = view.findViewById(R.id.targetCta);
_customBtn.setOnClickListener(new View.OnClickListener() {
#RequiresApi(api = Build.VERSION_CODES.M)
#Override
public void onClick(View view) {
Log.d(TAG, "onClick: Clicked on CTA of target");
String input = _customTextField.getText().toString();
if (!input.equals("")) {
iTarget.getTarget(input);
_dismiss();
}
}
});
}
return view;
}
/**
* Dismissing the dialog
*/
private void _dismiss() {
this.dismiss();
}
#Override
public void onAttach(Context context) {
super.onAttach(context);
try {
if (_layout == R.layout.fragment_custom) {
iCustomTts = (ICustomTts) getActivity();
}
else if (_layout == R.layout.fragment_target) {
iTarget = (ITarget) getActivity();
}
}
catch (ClassCastException e) {
Log.e(TAG, "onAttach: ClassCastException: " + e.getMessage());
}
}
}

You need to use the two-argument version of addView() to determine the order (index) of the button inside the LinearLayout:
LinearLayout root = view.findViewById(R.id.root);
Button button = new Button(requireContext());
float heightInPixel = 60 * getResources().getDisplayMetrics().density;
LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, (int) heightInPixel);
params.gravity = Gravity.CENTER;
button.setText("I am a dynamic text");
button.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
// Do the stuff on the click
}
});
root.addView(button, 0);

Recycle view scroll doesn't work

I have a navigation activity, where i also have a recycle view and a toolbar, to use the toolbar and the recycle view on this view, I created a separate XML layout like this:
<android.support.design.widget.CoordinatorLayout xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.example.afcosta.inesctec.pt.android.PlantFeed">
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="#style/AppTheme.AppBarOverlay">
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="#color/emerald"
app:popupTheme="#style/AppTheme.PopupOverlay" />
<android.support.v7.widget.RecyclerView
app:layout_behavior="#string/appbar_scrolling_view_behavior"
android:id="#+id/recycleView"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</android.support.design.widget.AppBarLayout>
<android.support.design.widget.FloatingActionButton
android:id="#+id/fab"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="bottom|end"
android:layout_margin="#dimen/fab_margin"
android:backgroundTint="#f1c40f"
android:src="#android:drawable/ic_menu_camera" />
<include layout="#layout/content_plant_feed" />
</android.support.design.widget.CoordinatorLayout>
After this I included this layout on my main activity like this:
<android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
tools:openDrawer="start">
<include
layout="#layout/app_bar_plant_feed"
android:layout_width="match_parent"
android:layout_height="match_parent" />
<android.support.design.widget.NavigationView
android:id="#+id/nav_view"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_gravity="start"
android:fitsSystemWindows="true"
app:headerLayout="#layout/nav_header_plant_feed"
app:menu="#menu/activity_plant_feed_drawer"
android:background="#color/white"/>
</android.support.v4.widget.DrawerLayout>
I am populating the recycler view with data of my database using also cardview, the thing is that with this approach (using include) my recycle view doesn't scroll, i have a lot of items but it always show just 4 of them.
my adapter:
public class PlantFeedAdapter extends RecyclerView.Adapter<PlantFeedAdapter.ViewHolder> {
private OnItemClickListener listener;
public interface OnItemClickListener {
void onRowClick(int position, String name, int id, View view);
void onTitleClicked(int position, int id, View clickedview);
void onImageClicked(int position,int id, View clickedview);
void onReportClicked(int position, int id,String name, View clickedview);
void onUserIconClicked(int position, int id, View clickedview);
void onUsernameClicked(int position, int id, View clickedview);
void onAvaliationClicked(int position, int id,String name, View clickedview);
}
private ArrayList<PlantPhotoUser> photos;
private Context context;
public PlantFeedAdapter(Context context, ArrayList<PlantPhotoUser> photos, OnItemClickListener listener) {
this.photos = photos;
this.context = context;
this.listener = listener;
}
#Override
public PlantFeedAdapter.ViewHolder onCreateViewHolder(ViewGroup viewGroup, int i) {
View view = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.plant_feed_row, viewGroup, false);
return new ViewHolder(view);
}
#Override
public void onBindViewHolder(final PlantFeedAdapter.ViewHolder viewHolder, final int i) {
viewHolder.name.setText(photos.get(i).getSpecie());
viewHolder.username.setText(photos.get(i).getUsernName());
viewHolder.data.setText(photos.get(i).getDate().split("T")[0]);
Log.d("data123",(photos.get(i).getDate().toString()));
final String urlFoto = "http://10.0.2.2:3000/" + photos.get(i).getPath();
viewHolder.userIcon.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
if (listener != null) {
listener.onUserIconClicked(viewHolder.getAdapterPosition(), photos.get(i).getUserId(), view);
}
}
});
viewHolder.username.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
if (listener != null) {
listener.onUsernameClicked(viewHolder.getAdapterPosition(),photos.get(i).getUserId(), view);
}
}
});
viewHolder.plantImg.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
if (listener != null) {
listener.onImageClicked(viewHolder.getAdapterPosition(), photos.get(i).getIdPlant(), view);
}
}
});
viewHolder.name.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
if(listener != null){
listener.onTitleClicked(viewHolder.getAdapterPosition(),photos.get(i).getIdPlant(),v);
}
}
});
viewHolder.reportImage.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
if(listener != null){
listener.onReportClicked(viewHolder.getAdapterPosition(),photos.get(i).getIdPlant(),photos.get(i).getSpecie(),v);
}
}
});
viewHolder.avaliationFoto.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
if(listener != null){
listener.onAvaliationClicked(viewHolder.getAdapterPosition(),photos.get(i).getIdPlant(),photos.get(i).getSpecie(),v);
}
}
});
Picasso.with(context)
.load(urlFoto)
.resize(300, 300)
.into(viewHolder.plantImg);
}
#Override
public int getItemCount() {
return photos.size();
}
public class ViewHolder extends RecyclerView.ViewHolder{
private TextView name;
private ImageView userIcon;
private TextView avaliationFoto;
private ImageView plantImg;
private ImageView foto;
private TextView username;
private ImageView reportImage;
private TextView data;
public ViewHolder(View view) {
super(view);
data = (TextView)view.findViewById(R.id.data);
name = (TextView) view.findViewById(R.id.plantName);
avaliationFoto = (TextView)view.findViewById(R.id.Avaliation);
userIcon = (ImageView)view.findViewById(R.id.userIcon);
plantImg = (ImageView)view.findViewById(R.id.plantPhoto);;
username = (TextView)view.findViewById(R.id.username);
reportImage = (ImageView)view.findViewById(R.id.cameraForbiden);
}
}
}
activity code:
public class PlantFeed extends AppCompatActivity
implements NavigationView.OnNavigationItemSelectedListener,PlantFeedAdapter.OnItemClickListener {
//initialize fields
String token;
ArrayList<PlantPhotoUser> photos = new ArrayList<>();
VolleyService mVolleyService;
IResult mResultCallback = null;
final String GETREQUEST = "GETCALL";
final String URL = "http://10.0.2.2:3000/fotos";
String date;
String lat;
String lon;
String alt;
PlantFeedAdapter plantFeedAdapter;
RecyclerView recyclerView;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_plant_feed);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
fab.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Intent i = new Intent(PlantFeed.this,CameraCapture.class);
startActivity(i);
}
});
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
drawer.setDrawerListener(toggle);
toggle.syncState();
NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
navigationView.setNavigationItemSelectedListener(this);
recyclerView = (RecyclerView)findViewById(R.id.recycleView);
recyclerView.setHasFixedSize(true);
recyclerView.setLayoutManager((new LinearLayoutManager(this)));
plantFeedAdapter = new PlantFeedAdapter(getApplicationContext(), photos,PlantFeed.this);
recyclerView.setAdapter(plantFeedAdapter);
token = checkForToken();
initVolleyCallback();
mVolleyService = new VolleyService(mResultCallback,this);
mVolleyService.getDataVolley(GETREQUEST,URL,token);
}
void initVolleyCallback(){
mResultCallback = new IResult() {
#Override
public void notifySuccess(String requestType,JSONObject response) {
Log.d("HELLL","hi1");
}
#Override
public void notifySuccess(String requestType, JSONArray response) {
PlantPhotoUser plantPhotoUser;
Log.d("HELLLL","hi");
for (int i=0; i < response.length(); i++) {
try {
JSONObject object = response.getJSONObject(i);
Log.d("objeto",object.toString());
int userId = object.getInt("userId");
Log.d("objeto",String.valueOf(userId));
String username = object.getJSONObject("user").getString("username");
Log.d("objeto",String.valueOf(username));
int plantId = object.getInt("plantId");
Log.d("objeto",String.valueOf(plantId));
String specie = object.getJSONObject("plant").getString("specie");
Log.d("objeto",String.valueOf(specie));
String path = object.getString("image");
Log.d("objeto",String.valueOf(path));
int fotoId = object.getInt("id");
if(object.getString("date") != null){
date = object.getString("date");
}
if(object.getString("lat") != null){
lat = object.getString("lat");
}
if(object.getString("lon") != null){
lon = object.getString("lon");
}
if(object.getString("altitude") != null){
alt = object.getString("altitude");
}
plantPhotoUser = new PlantPhotoUser(fotoId,plantId,userId,path,specie,date,lat,lon,alt,username);
photos.add(plantPhotoUser);
} catch (JSONException e) {
e.printStackTrace();
}
}
plantFeedAdapter.notifyDataSetChanged();
}
#Override
public void notifyError(String requestType,VolleyError error) {
Log.d("FAIL",error.toString());
}
};
}
public String checkForToken() {
SharedPreferences sharedPref = getSharedPreferences("user", MODE_PRIVATE);
String tokenKey = getResources().getString(R.string.token);
String token = sharedPref.getString(getString(R.string.token), tokenKey); // take the token
return token;
}
#Override
public void onBackPressed() {
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
if (drawer.isDrawerOpen(GravityCompat.START)) {
drawer.closeDrawer(GravityCompat.START);
} else {
super.onBackPressed();
}
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
Intent i = new Intent(PlantFeed.this,UserProfile.class);
startActivity(i);
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.plant_feed, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
#SuppressWarnings("StatementWithEmptyBody")
#Override
public boolean onNavigationItemSelected(MenuItem item) {
// Handle navigation view item clicks here.
int id = item.getItemId();
if (id == R.id.nav_camera) {
Intent i = new Intent(PlantFeed.this,CameraCapture.class);
startActivity(i);
} else if (id == R.id.nav_gallery) {
Intent i = new Intent(PlantFeed.this,PlantFeed.class);
startActivity(i);
} else if (id == R.id.nav_slideshow) {
Intent i = new Intent(PlantFeed.this,FamilyLibrary.class);
startActivity(i);
} else if (id == R.id.nav_manage) {
} else if (id == R.id.nav_share) {
}
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
drawer.closeDrawer(GravityCompat.START);
return true;
}
#Override
public void onRowClick(int position, String name, int id, View view) {
}
#Override
public void onTitleClicked(int position, int id, View clickedview) {
Intent i = new Intent(this,PhotosForPlant.class);
i.putExtra("plantId",String.valueOf(id));
startActivity(i);
}
#Override
public void onImageClicked(int position, int id, View clickedview) {
Intent i = new Intent(this,PhotosForPlant.class);
i.putExtra("plantId",String.valueOf(id));
startActivity(i);
}
#Override
public void onReportClicked(int position, int id, String name, View clickedview) {
Log.d("HELLLO","HELLOO");
showDialogReport(id,name);
}
#Override
public void onUserIconClicked(int position, int id, View clickedview) {
Intent i = new Intent(this,UserProfile.class);
i.putExtra("userId",id);
startActivity(i);
}
#Override
public void onUsernameClicked(int position, int id, View clickedview) {
Intent i = new Intent(this,UserProfile.class);
i.putExtra("userId",id);
startActivity(i);
}
#Override
public void onAvaliationClicked(int position, int id, String name, View clickedview) {
}
Any tip?

How to add admob banner in a fragment view?

I am new to android development and I am confused about how to add admob banner to a fragment activity(I think its calling fragment). I am modifying a source code.
I have a layout file called fragment_ftp.xml and its as below
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
xmlns:ads="http://schemas.android.com/apk/res-auto">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceMedium"
android:text=""
android:id="#+id/statusText"
android:layout_above="#+id/startStopButton"
android:layout_centerHorizontal="true"
android:layout_marginBottom="99dp" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text=""
android:id="#+id/ftpAddressText"
android:layout_below="#+id/startStopButton"
android:layout_centerHorizontal="true" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/start_ftp"
android:id="#+id/startStopButton"
android:layout_centerVertical="true"
android:layout_centerHorizontal="true" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceMedium"
android:textColor="#color/primary_red"
android:text=""
android:id="#+id/warningText"
android:layout_above="#+id/startStopButton"
android:layout_centerHorizontal="true" />
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/ftp_image"
android:layout_above="#+id/warningText"
android:layout_centerHorizontal="true" />
<RelativeLayout
android:id="#+id/relativeLayout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true">
<com.google.android.gms.ads.AdView
android:id="#+id/adView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
ads:adSize="SMART_BANNER"
ads:adUnitId="#string/banner_home_footer" />
</RelativeLayout>
</RelativeLayout>
I had added the admob banner and in the preview, I can see that. Please check the below screenshot.
But the issues is that, Where should I write the java code for this admob banner. I don't have a corresponding activity for this fragment_ftp.xml.
Searching for fragment_ftp, I could see only a java file as follows.
FTPServerFragment.java
package com.filename.fragments;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.SharedPreferences;
import android.net.ConnectivityManager;
public class FTPServerFragment extends Fragment {
TextView statusText,warningText,ftpAddrText;
Button ftpBtn;
Futils utils = new Futils();
private MainActivity mainActivity;
private View rootView;
private BroadcastReceiver mWifiReceiver = new BroadcastReceiver() {
#Override
public void onReceive(Context context, Intent intent) {
ConnectivityManager conMan = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo netInfo = conMan.getActiveNetworkInfo();
if (netInfo != null && netInfo.getType() == ConnectivityManager.TYPE_WIFI){
warningText.setText("");
}
else{
stopServer();
statusText.setText(utils.getString(getContext(),R.string.ftp_status_not_running));
warningText.setText(utils.getString(getContext(),R.string.ftp_no_wifi));
ftpAddrText.setText("");
ftpBtn.setText(utils.getString(getContext(),R.string.start_ftp));
}
}
};
private BroadcastReceiver ftpReceiver = new BroadcastReceiver() {
#Override
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
if(action == FTPService.ACTION_STARTED) {
statusText.setText(utils.getString(getContext(), R.string.ftp_status_running));
warningText.setText("");
ftpAddrText.setText(getFTPAddressString());
ftpBtn.setText(utils.getString(getContext(),R.string.stop_ftp));
}
else if(action == FTPService.ACTION_FAILEDTOSTART){
statusText.setText(utils.getString(getContext(),R.string.ftp_status_not_running));
warningText.setText("Oops! Something went wrong");
ftpAddrText.setText("");
ftpBtn.setText(utils.getString(getContext(),R.string.start_ftp));
}
else if(action == FTPService.ACTION_STOPPED){
statusText.setText(utils.getString(getContext(),R.string.ftp_status_not_running));
ftpAddrText.setText("");
ftpBtn.setText(utils.getString(getContext(),R.string.start_ftp));
}
}
};
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setHasOptionsMenu(false);
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
rootView = inflater.inflate(R.layout.fragment_ftp,container,false);
// return inflater.inflate(R.layout.article_view, container, false);
statusText =(TextView) rootView.findViewById(R.id.statusText);
warningText = (TextView) rootView.findViewById(R.id.warningText);
ftpAddrText = (TextView) rootView.findViewById(R.id.ftpAddressText);
ftpBtn = (Button) rootView.findViewById(R.id.startStopButton);
SharedPreferences Sp = PreferenceManager.getDefaultSharedPreferences(getContext());
int th = Integer.parseInt(Sp.getString("theme", "0"));
// checking if theme should be set light/dark or automatic
int theme1 = th == 2 ? PreferenceUtils.hourOfDay() : th;
ImageView ftpImage = (ImageView)rootView.findViewById(R.id.ftp_image);
//light theme
if(theme1 == 0){
ftpImage.setImageResource(R.drawable.ic_ftp_light);
}else{
//dark
ftpImage.setImageResource(R.drawable.ic_ftp_dark);
}
ftpBtn.setOnClickListener(new View.OnClickListener(){
#Override
public void onClick(View v) {
if(!FTPService.isRunning()){
if(FTPService.isConnectedToWifi(getContext()))
startServer();
else
warningText.setText(utils.getString(getContext(),R.string.ftp_no_wifi));
}
else{
stopServer();
}
}
});
return rootView;
}
#Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
setRetainInstance(true);
mainActivity=(MainActivity)getActivity();
mainActivity.setActionBarTitle(utils.getString(getActivity(), R.string.ftp));
mainActivity.floatingActionButton.hideMenuButton(true);
mainActivity.buttonBarFrame.setVisibility(View.GONE);
mainActivity.supportInvalidateOptionsMenu();
}
#Override
public void onDestroy(){
super.onDestroy();
}
private void startServer() {
getContext().sendBroadcast(new Intent(FTPService.ACTION_START_FTPSERVER));
}
private void stopServer() {
getContext().sendBroadcast(new Intent(FTPService.ACTION_STOP_FTPSERVER));
}
#Override
public void onResume(){
super.onResume();
updateStatus();
IntentFilter wifiFilter = new IntentFilter();
wifiFilter.addAction(ConnectivityManager.CONNECTIVITY_ACTION);
getContext().registerReceiver(mWifiReceiver,wifiFilter);
IntentFilter ftpFilter = new IntentFilter();
ftpFilter.addAction(FTPService.ACTION_STARTED);
ftpFilter.addAction(FTPService.ACTION_STOPPED);
ftpFilter.addAction(FTPService.ACTION_FAILEDTOSTART);
getContext().registerReceiver(ftpReceiver,ftpFilter);
}
#Override
public void onPause(){
super.onPause();
getContext().unregisterReceiver(mWifiReceiver);
getContext().unregisterReceiver(ftpReceiver);
}
private void updateStatus(){
if(FTPService.isRunning()){
statusText.setText(utils.getString(getContext(),R.string.ftp_status_running));
ftpBtn.setText(utils.getString(getContext(),R.string.stop_ftp));
ftpAddrText.setText(getFTPAddressString());
}
else{
statusText.setText(utils.getString(getContext(),R.string.ftp_status_not_running));
ftpBtn.setText(utils.getString(getContext(),R.string.start_ftp));
}
}
private String getFTPAddressString(){
return "ftp://"+FTPService.getLocalInetAddress(getContext()).getHostAddress()+":"+FTPService.getPort();
}
}
I this the java page where I shall write the admob call?

try and use this code solve the issue
http://www.androidhive.info/2016/02/android-how-to-integrate-google-admob-in-your-app/

your code java has to be added inside onCreateView function in FTPServerFragement like this :
public class FTPServerFragment extends Fragment {
TextView statusText,warningText,ftpAddrText;
Button ftpBtn;
Futils utils = new Futils();
private MainActivity mainActivity;
private View rootView;
private BroadcastReceiver mWifiReceiver = new BroadcastReceiver() {
#Override
public void onReceive(Context context, Intent intent) {
ConnectivityManager conMan = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo netInfo = conMan.getActiveNetworkInfo();
if (netInfo != null && netInfo.getType() == ConnectivityManager.TYPE_WIFI){
warningText.setText("");
}
else{
stopServer();
statusText.setText(utils.getString(getContext(),R.string.ftp_status_not_running));
warningText.setText(utils.getString(getContext(),R.string.ftp_no_wifi));
ftpAddrText.setText("");
ftpBtn.setText(utils.getString(getContext(),R.string.start_ftp));
}
}
};
private BroadcastReceiver ftpReceiver = new BroadcastReceiver() {
#Override
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
if(action == FTPService.ACTION_STARTED) {
statusText.setText(utils.getString(getContext(), R.string.ftp_status_running));
warningText.setText("");
ftpAddrText.setText(getFTPAddressString());
ftpBtn.setText(utils.getString(getContext(),R.string.stop_ftp));
}
else if(action == FTPService.ACTION_FAILEDTOSTART){
statusText.setText(utils.getString(getContext(),R.string.ftp_status_not_running));
warningText.setText("Oops! Something went wrong");
ftpAddrText.setText("");
ftpBtn.setText(utils.getString(getContext(),R.string.start_ftp));
}
else if(action == FTPService.ACTION_STOPPED){
statusText.setText(utils.getString(getContext(),R.string.ftp_status_not_running));
ftpAddrText.setText("");
ftpBtn.setText(utils.getString(getContext(),R.string.start_ftp));
}
}
};
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setHasOptionsMenu(false);
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
rootView = inflater.inflate(R.layout.fragment_ftp,container,false);
// return inflater.inflate(R.layout.article_view, container, false);
statusText =(TextView) rootView.findViewById(R.id.statusText);
warningText = (TextView) rootView.findViewById(R.id.warningText);
ftpAddrText = (TextView) rootView.findViewById(R.id.ftpAddressText);
ftpBtn = (Button) rootView.findViewById(R.id.startStopButton);
//your ads
MobileAds.initialize(this, new OnInitializationCompleteListener() {
#Override
public void onInitializationComplete(InitializationStatus initializationStatus) {
}
});
mAdView = rootView.findViewById(R.id.adView);
AdRequest adRequest = new AdRequest.Builder().build();
mAdView.loadAd(adRequest);
SharedPreferences Sp = PreferenceManager.getDefaultSharedPreferences(getContext());
int th = Integer.parseInt(Sp.getString("theme", "0"));
// checking if theme should be set light/dark or automatic
int theme1 = th == 2 ? PreferenceUtils.hourOfDay() : th;
ImageView ftpImage = (ImageView)rootView.findViewById(R.id.ftp_image);
//light theme
if(theme1 == 0){
ftpImage.setImageResource(R.drawable.ic_ftp_light);
}else{
//dark
ftpImage.setImageResource(R.drawable.ic_ftp_dark);
}
ftpBtn.setOnClickListener(new View.OnClickListener(){
#Override
public void onClick(View v) {
if(!FTPService.isRunning()){
if(FTPService.isConnectedToWifi(getContext()))
startServer();
else
warningText.setText(utils.getString(getContext(),R.string.ftp_no_wifi));
}
else{
stopServer();
}
}
});
return rootView;
}
#Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
setRetainInstance(true);
mainActivity=(MainActivity)getActivity();
mainActivity.setActionBarTitle(utils.getString(getActivity(), R.string.ftp));
mainActivity.floatingActionButton.hideMenuButton(true);
mainActivity.buttonBarFrame.setVisibility(View.GONE);
mainActivity.supportInvalidateOptionsMenu();
}
#Override
public void onDestroy(){
super.onDestroy();
}
private void startServer() {
getContext().sendBroadcast(new Intent(FTPService.ACTION_START_FTPSERVER));
}
private void stopServer() {
getContext().sendBroadcast(new Intent(FTPService.ACTION_STOP_FTPSERVER));
}
#Override
public void onResume(){
super.onResume();
updateStatus();
IntentFilter wifiFilter = new IntentFilter();
wifiFilter.addAction(ConnectivityManager.CONNECTIVITY_ACTION);
getContext().registerReceiver(mWifiReceiver,wifiFilter);
IntentFilter ftpFilter = new IntentFilter();
ftpFilter.addAction(FTPService.ACTION_STARTED);
ftpFilter.addAction(FTPService.ACTION_STOPPED);
ftpFilter.addAction(FTPService.ACTION_FAILEDTOSTART);
getContext().registerReceiver(ftpReceiver,ftpFilter);
}
#Override
public void onPause(){
super.onPause();
getContext().unregisterReceiver(mWifiReceiver);
getContext().unregisterReceiver(ftpReceiver);
}
private void updateStatus(){
if(FTPService.isRunning()){
statusText.setText(utils.getString(getContext(),R.string.ftp_status_running));
ftpBtn.setText(utils.getString(getContext(),R.string.stop_ftp));
ftpAddrText.setText(getFTPAddressString());
}
else{
statusText.setText(utils.getString(getContext(),R.string.ftp_status_not_running));
ftpBtn.setText(utils.getString(getContext(),R.string.start_ftp));
}
}
private String getFTPAddressString(){
return "ftp://"+FTPService.getLocalInetAddress(getContext()).getHostAddress()+":"+FTPService.getPort();
}
}

json data from server is not displayed in listview

I am trying to retrieve data from server and display it in listview. But when I compile this it is not working and the list is even not showing in the activity.
Mylist.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginTop="#dimen/fab_margin"
android:orientation="vertical" >
<AbsoluteLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<LinearLayout android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<TextView
android:id="#+id/edItem"
android:layout_width="180dp"
android:layout_marginTop="10dp"
android:layout_height="40dp"
android:layout_marginLeft="10dp"/>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="180dp"
android:orientation="horizontal">
<TextView
android:id="#+id/edUnit"
android:layout_width="100dp"
android:layout_marginTop="80dp"
android:layout_height="40dp"
android:layout_marginRight="10dp"
android:layout_marginLeft="10dp"/>
<TextView
android:id="#+id/edPrice"
android:layout_width="100dp"
android:layout_marginTop="80dp"
android:layout_height="40dp"
android:layout_marginLeft="10dp"/>
<TextView
android:id="#+id/edDisc"
android:layout_width="100dp"
android:layout_height="40dp"
android:layout_marginRight="10dp"
android:layout_marginTop="80dp"
android:layout_marginLeft="10dp"/>
</LinearLayout>
</AbsoluteLayout>
</LinearLayout>
Content_main.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="fill_parent"
android:layout_height="match_parent"
android:paddingBottom="#dimen/activity_vertical_margin"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
app:layout_behavior="#string/appbar_scrolling_view_behavior"
tools:context="com.example.user.merchant.MainActivity"
tools:showIn="#layout/app_bar_main">
<ListView
android:id="#+id/list"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:dividerHeight="10dp">
</ListView>
<SearchView
android:id="#+id/search_view"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
</SearchView>
</RelativeLayout>
AppController.java
public class AppController extends Application {
public static final String TAG = AppController.class.getSimpleName();
private RequestQueue mRequestQueue;
// private ImageLoader mImageLoader;
private static AppController mInstance;
#Override
public void onCreate() {
super.onCreate();
mInstance = this;
}
public static synchronized AppController getInstance() {
return mInstance;
}
public RequestQueue getRequestQueue() {
if (mRequestQueue == null) {
mRequestQueue = Volley.newRequestQueue(getApplicationContext());
}
return mRequestQueue;
}
public <T> void addToRequestQueue(Request<T> req, String tag) {
// set the default tag if tag is empty
req.setTag(TextUtils.isEmpty(tag) ? TAG : tag);
getRequestQueue().add(req);
}
public <T> void addToRequestQueue(Request<T> req) {
req.setTag(TAG);
getRequestQueue().add(req);
}
public void cancelPendingRequests(Object tag) {
if (mRequestQueue != null) {
mRequestQueue.cancelAll(tag);
}
}
}
CustomListAdapter.java
public class CustomListAdapter extends BaseAdapter implements Filterable {
private Activity activity;
CustomFilter filter;
private LayoutInflater inflater;
private List<InventoryModel> InventoryModelItems;
private List<InventoryModel> filterList;
public CustomListAdapter(Activity activity, List<InventoryModel> InventoryModelItems) {
this.activity = activity;
this.InventoryModelItems = InventoryModelItems;
this.filterList=InventoryModelItems;
}
#Override
public int getCount() {
return InventoryModelItems.size();
}
#Override
public Object getItem(int location) {
return InventoryModelItems.get(location);
}
#Override
public long getItemId(int position) {
return position;
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
if (inflater == null)
inflater = (LayoutInflater) activity
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
if (convertView == null)
convertView = inflater.inflate(R.layout.mylist, null);
TextView ItemName = (TextView) convertView.findViewById(R.id.edItem);
TextView Unit = (TextView) convertView.findViewById(R.id.edUnit);
TextView Price = (TextView) convertView.findViewById(R.id.edPrice);
TextView Discount = (TextView) convertView.findViewById(R.id.edDisc);
// getting InventoryModel data for the row
InventoryModel m = InventoryModelItems.get(position);
// thumbnail image
// title
ItemName.setText(m.getItemName());
// rating
Unit.setText("Unit: " + (m.getUnit()));
// release year
Price.setText("Rs: " + String.valueOf(m.getPrice()));
Discount.setText("Discount: " + String.valueOf(m.getUnit()));
return convertView;
}
#Override
public Filter getFilter() {
if(filter==null)
{
filter=new CustomFilter();
}
return filter;
}
class CustomFilter extends Filter
{
#Override
protected FilterResults performFiltering(CharSequence constraint) {
FilterResults results=new FilterResults();
if(constraint != null&&constraint.length()>0)
{
constraint=constraint.toString().toUpperCase();
ArrayList<InventoryModel> filters=new ArrayList<InventoryModel>();
for(int i=0;i<filterList.size();i++)
{
if(filterList.get(i).getItemName().toUpperCase().contains(constraint))
{
InventoryModel p= new InventoryModel(filterList.get(i).getItemName(),filterList.get(i).getUnit(),filterList.get(i).getPrice(),filterList.get(i).getDiscount());
filters.add(p);
}
}
results.count=filters.size();
results.values=filters;
}
else
{
results.count=filterList.size();
results.values=filterList;
}
return results;
}
#Override
protected void publishResults(CharSequence constraint, FilterResults results) {
InventoryModelItems=(List<InventoryModel>) results.values;
notifyDataSetChanged();
}
}
}
mainactivity.java
public class MainActivity extends AppCompatActivity
implements NavigationView.OnNavigationItemSelectedListener {
private static final String TAG = MainActivity.class.getSimpleName();
private static final String url = "url";
private ProgressDialog pDialog;
private List<InventoryModel> InventoryModelList = new ArrayList<InventoryModel>();
private ListView listView;
private CustomListAdapter adapter;
public TextView test;
SearchView inputSearch;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
listView=(ListView)findViewById(R.id.list);
adapter = new CustomListAdapter(this, InventoryModelList);
listView.setAdapter(adapter);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
//toolbar.setLogo(R.drawable.ic_menu_slideshow);
//toolbar.setNavigationIcon(getResources().getDrawable(R.drawable.ic_menu_slideshow));
// test=(TextView)findViewById(R.id.listtest);
setSupportActionBar(toolbar);
pDialog = new ProgressDialog(this);
// Showing progress dialog before making http request
pDialog.setMessage("Loading...");
pDialog.show();
// changing action bar color
assert getSupportActionBar() != null;
getSupportActionBar().setBackgroundDrawable(
new ColorDrawable(Color.parseColor("#1b1b1b")));
JsonArrayRequest InventoryModelReq = new JsonArrayRequest(url,
new Response.Listener<JSONArray>() {
#Override
public void onResponse(JSONArray response) {
// test.setText(response);
Log.d(TAG, response.toString());
hidePDialog();
// Parsing json
for (int i = 0; i < response.length(); i++) {
try {
JSONObject obj = response.getJSONObject(i);
InventoryModel InventoryModel = new InventoryModel();
InventoryModel.setItemName(obj.getString("Item_Name"));
InventoryModel.setUnit(obj.getString("Unit"));
InventoryModel.setPrice(((Number) obj.get("Price"))
.floatValue());
InventoryModel.setDiscount(((Number) obj.get("Discount")).floatValue());
// adding InventoryModel to InventoryModels array
InventoryModelList.add(InventoryModel);
} catch (JSONException e) {
e.printStackTrace();
}
}
// notifying list adapter about data changes
// so that it renders the list view with updated data
adapter.notifyDataSetChanged();
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
VolleyLog.d(TAG, "Error: " + error.getMessage());
hidePDialog();
}
});
AppController.getInstance().addToRequestQueue(InventoryModelReq);
/* toolbar.setNavigationOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent intenthome = new Intent(MainActivity.this, MainActivity.class);
startActivity(intenthome);
}
});*/
FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
fab.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Intent intentfloat = new Intent(MainActivity.this, ItemAdd.class);
startActivity(intentfloat);
}
});
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
//toggle.setHomeAsUpIndicator(R.drawable.ic_menu_slideshow);
drawer.setDrawerListener(toggle);
toggle.syncState();
NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
navigationView.setNavigationItemSelectedListener(this);
}
#Override
public void onBackPressed() {
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
if (drawer.isDrawerOpen(GravityCompat.START)) {
drawer.closeDrawer(GravityCompat.START);
} else {
super.onBackPressed();
}
}
#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;
}
#Override
public void onDestroy() {
super.onDestroy();
hidePDialog();
}
private void hidePDialog() {
if (pDialog != null) {
pDialog.dismiss();
pDialog = null;
}
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if(id == R.id.account) {
Intent intentaccount = new Intent(MainActivity.this, account.class);
startActivity(intentaccount);
}
if (id == R.id.action_settings) {
return true;
}
if(id==R.id.action_notify) {
Intent intentNotify = new Intent(MainActivity.this, Notification.class);
startActivity(intentNotify);
}
return super.onOptionsItemSelected(item);
}
#SuppressWarnings("StatementWithEmptyBody")
#Override
public boolean onNavigationItemSelected(MenuItem item) {
// Handle navigation view item clicks here.
int id = item.getItemId();
if (id == R.id.nav_processing) {
// Handle the camera action
Intent intentProcessing = new Intent(MainActivity.this, ProcessingItem.class);
startActivity(intentProcessing);
} else if (id == R.id.nav_processed) {
Intent intentProcessed = new Intent(MainActivity.this, ProcessedItem.class);
startActivity(intentProcessed);
} else if (id == R.id.nav_Aborted) {
Intent intentAborted = new Intent(MainActivity.this, AbortedIem.class);
startActivity(intentAborted);
} else if (id == R.id.nav_delivery) {
Intent intentDelivered = new Intent(MainActivity.this, DeliveredItem.class);
startActivity(intentDelivered);
}
else if (id == R.id.logout)
{
// private void logout(){
//Creating an alert dialog to confirm logout
AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(this);
alertDialogBuilder.setMessage("Are you sure you want to logout?");
alertDialogBuilder.setPositiveButton("Yes",
new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface arg0, int arg1) {
//Getting out sharedpreferences
SharedPreferences preferences = getSharedPreferences(config.SHARED_PREF_NAME, Context.MODE_PRIVATE);
//Getting editor
SharedPreferences.Editor editor = preferences.edit();
//Puting the value false for loggedin
editor.putBoolean(config.LOGGEDIN_SHARED_PREF, false);
//Putting blank value to email
editor.putString(config.EMAIL_SHARED_PREF, "");
//Saving the sharedpreferences
editor.commit();
//Starting login activity
Intent intent = new Intent(MainActivity.this, LoginActivityMerchant.class);
startActivity(intent);
}
});
alertDialogBuilder.setNegativeButton("No",
new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface arg0, int arg1) {
}
});
//Showing the alert dialog
AlertDialog alertDialog = alertDialogBuilder.create();
alertDialog.show();
}
else if (id == R.id.nav_share) {
} else if (id == R.id.nav_send) {
}
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
drawer.closeDrawer(GravityCompat.START);
return true;
}
}

Android - ListView disappears after setContentView()?

I have a ListView in one my activity_main.xml file, the problem is, when I click on a Item in that ListView (activity_main.xml), it calls setContentView() and loads another XML file called activity_settings.xml.
The problem is, when I click the back button in activity_settings.xml (Button to call setContentView() again and go back to activity_main.xml) The ListView from activity_main.xml disappears.
I have tried about dozen ways of fixing it, but nothing seems to work.
Here is my MainActivity.java (It is pretty big):
package com.NautGames.xectav2.app;
import {...}
public class MainActivity extends ASR {
private ToggleButton homeOnOff;
HomeHoldDown hhd = new HomeHoldDown();
int keyCode;
KeyEvent event;
Context context;
private static final String LOGTAG = "Xecta";
private static final String BOTID = "e38006d97e34053e";
private TTS myTts;
private ImageButton speakButton;
private Bot bot;
Button backB1;
Button backB2;
Button backB3;
boolean mBound = false;
SimpleAdapter simpleAdpt;
BoundService myService = new BoundService();
boolean isBound = false;
EditText name, email, mMessage, subject;
String key;
String Name;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Intent intent = new Intent(this, BoundService.class);
bindService(intent, myConnection, Context.BIND_AUTO_CREATE);
//homeOnOff = (ToggleButton) findViewById(R.id.toggleButton);
name = (EditText) findViewById(R.id.etName);
email = (EditText) findViewById(R.id.etEmail);
mMessage = (EditText) findViewById(R.id.etAdd);
subject = (EditText) findViewById(R.id.txtSubject);
Button startBtn = (Button) findViewById(R.id.send);
backB1 = (Button)findViewById(R.id.button1);
backB2 = (Button)findViewById(R.id.button2);
backB3 = (Button)findViewById(R.id.button3);
//Initialize GUI elements
setSpeakButton();
//Initialize the speech recognizer
createRecognizer(getApplicationContext());
//Initialize text to speech
myTts = TTS.getInstance(this);
//Create bot
bot = new Bot(this, BOTID, myTts, "assistant");
initList();
// We get the ListView component from the layout
ListView lv = (ListView) findViewById(R.id.listView);
// This is a simple adapter that accepts as parameter
// Context
// Data list
// The row layout that is used during the row creation
// The keys used to retrieve the data
// The View id used to show the data. The key number and the view id must match
simpleAdpt = new SimpleAdapter(this, planetsList, android.R.layout.simple_list_item_1, new String[] {"page"}, new int[] {android.R.id.text1});
lv.setAdapter(simpleAdpt);
// React to user clicks on item
lv.setOnItemClickListener(new AdapterView.OnItemClickListener()
{
public void onItemClick(AdapterView<?> parentAdapter, View view, int position,
long id)
{
// We know the View is a TextView so we can cast it
TextView clickedView = (TextView) view;
//Toast.makeText(MainActivity.this, "Item with id ["+id+"] - Position ["+position+"] - Planet ["+clickedView.getText()+"]", Toast.LENGTH_SHORT).show();
if(id == 0)
{
setContentView(R.layout.activity_settings);
}
if(id == 1)
{
setContentView(R.layout.activity_about);
}
if(id == 2)
{
setContentView(R.layout.activity_feedback);
}
}
});
}
public void onClickSend(View v) {
Intent i = new Intent(Intent.ACTION_SEND);
i.setType("message/rfc822");
i.putExtra(Intent.EXTRA_EMAIL , new String[]{"name#email.com"});
i.putExtra(Intent.EXTRA_SUBJECT, subject.getText().toString());
i.putExtra(Intent.EXTRA_TEXT , mMessage.getText().toString());
try {
startActivity(Intent.createChooser(i, "Send mail..."));
} catch (android.content.ActivityNotFoundException ex) {
Toast.makeText(MainActivity.this, "There are no email clients installed.", Toast.LENGTH_SHORT).show();
}
}
//from here
private ServiceConnection myConnection = new ServiceConnection() {
public void onServiceConnected(ComponentName className,
IBinder service) {
BoundService.MyLocalBinder binder = (BoundService.MyLocalBinder) service;
myService = binder.getService();
isBound = true;
}
public void onServiceDisconnected(ComponentName arg0) {
isBound = false;
}
};
//to HERE
public void showTime(View view)
{
myService.getCurrentTime();
}
/************************************************************************
* WHEN THE USER TURNS THE HOME LISTENING ON AND OFF
* IT WILL START SERVICE AND STOP SERVICE
*************************************************************************/
/*public void onToggleClicked(View view) {
boolean on = ((ToggleButton) view).isChecked();
if (on) {
//Toast.makeText(MainActivity.this, "Activate Xecta with Home ON", Toast.LENGTH_LONG).show();
//startService(new Intent(getBaseContext(), Service1.class));
} else {
//Toast.makeText(MainActivity.this, "Activate Xecta with Home OFF", Toast.LENGTH_LONG).show();
//stopService(new Intent(getBaseContext(), LocalService.class));
}
}*/
#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 onClickService(View view)
{
if(isApplicationSentToBackground(context))
{
hhd.onKeyLongPress(keyCode, event);
}
}*/
/**************************************************************************
* WHEN THE USER HOLDS DOWN THE HOME BUTTON
*************************************************************************/
#Override
public boolean onKeyLongPress(int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_BACK) {
Toast.makeText(MainActivity.this, "Key pressed long!", Toast.LENGTH_LONG).show();
return true;
}
return super.onKeyLongPress(keyCode, event);
}
public void onClickBack(View view)
{
setContentView(R.layout.activity_main);
}
// The data to show
List<Map<String, String>> planetsList = new ArrayList<Map<String,String>>();
private void initList() {
// We populate the planets
planetsList.add(newList("page", "Settings"));
planetsList.add(newList("page", "About"));
planetsList.add(newList("page", "FeedBack"));
}
private HashMap<String, String> newList(String key, String name) {
HashMap<String, String> planet = new HashMap<String, String>();
planet.put(key, name);
return planet;
}
public void onClick(View view)
{
speakButton = (ImageButton) findViewById(R.id.speech_btn);
try {
listen(RecognizerIntent.LANGUAGE_MODEL_WEB_SEARCH, 10);
} catch (Exception e) {
Toast.makeText(getApplicationContext(),"ASR could not be started: invalid params", Toast.LENGTH_SHORT).show();
Log.e(LOGTAG, e.getMessage());
}
}
private void setSpeakButton() {
speakButton = (ImageButton) findViewById(R.id.speech_btn);
speakButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
try {
listen(RecognizerIntent.LANGUAGE_MODEL_WEB_SEARCH, 10);
} catch (Exception e) {
Toast.makeText(getApplicationContext(), "ASR could not be started: invalid params", Toast.LENGTH_SHORT).show();
Log.e(LOGTAG, e.getMessage());
}
}
});
}
/**
* Provides feedback to the user when the ASR encounters an error
*/
public void processAsrError(int errorCode) {
String errorMessage;
switch (errorCode)
{
case SpeechRecognizer.ERROR_AUDIO:
errorMessage = "Audio recording error";
break;
case SpeechRecognizer.ERROR_CLIENT:
errorMessage = "Client side error";
break;
case SpeechRecognizer.ERROR_INSUFFICIENT_PERMISSIONS:
errorMessage = "Insufficient permissions" ;
break;
case SpeechRecognizer.ERROR_NETWORK:
errorMessage = "Network related error" ;
break;
case SpeechRecognizer.ERROR_NETWORK_TIMEOUT:
errorMessage = "Network operation timeout";
break;
case SpeechRecognizer.ERROR_RECOGNIZER_BUSY:
errorMessage = "RecognitionServiceBusy" ;
break;
case SpeechRecognizer.ERROR_SERVER:
errorMessage = "Server sends error status";
break;
case SpeechRecognizer.ERROR_NO_MATCH:
errorMessage = "No matching message" ;
break;
case SpeechRecognizer.ERROR_SPEECH_TIMEOUT:
errorMessage = "Input not audible";
break;
default:
errorMessage = "ASR error";
break;
}
try {
myTts.speak(errorMessage,"EN");
} catch (Exception e) {
Log.e(LOGTAG, "English not available for TTS, default language used instead");
}
//If there is an error, shows feedback to the user and writes it in the log
Log.e(LOGTAG, "Error: "+ errorMessage);
Toast.makeText(this, errorMessage, Toast.LENGTH_LONG).show();
}
public void processAsrReadyForSpeech() {
Toast.makeText(this, "I'm listening", Toast.LENGTH_LONG).show();
}
public void processAsrResults(ArrayList<String> nBestList, float[] confidences) {
String bestResult = nBestList.get(0);
Log.d(LOGTAG, "Speech input: " + bestResult);
// insert %20 for spaces in query
bestResult = bestResult.replaceAll(" ", "%20");
bot.initiateQuery(bestResult);
//Toast.makeText(MainActivity.this, "", Toast.LENGTH_LONG).show();
}
#Override
public void onDestroy() {
myTts.shutdown();
super.onDestroy();
}
#Override
public void onBackPressed() {
super.onBackPressed();
setContentView(R.layout.activity_main);
newList(key, Name);
initList();
}
#Override
public void onStop()
{
super.onStop();
Toast.makeText(MainActivity.this, "Bye bye!", Toast.LENGTH_SHORT).show();
onKeyLongPress(keyCode, event);
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}
onClickBack is the button to go back to activity_main.xml, I am also initialising the ListView in onCreate().
activity_main.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="#drawable/onericblur"
android:orientation="vertical"
android:paddingBottom="5dp"
android:onClick="onClick"
android:weightSum="1">
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:background="#000000"
android:orientation="vertical" >
<TextView
android:id="#+id/title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:background="#000000"
android:paddingBottom="10dip"
android:paddingTop="10dip"
android:text="#string/title"
android:textColor="#FFFFFF"
android:textSize="18sp" />
</LinearLayout>
<ViewAnimator
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/viewAnimator"
android:layout_gravity="right" />
<ImageButton
android:id="#+id/speech_btn"
android:background="#null"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/xectaicon"
android:onClick="onClick"
android:layout_marginTop="32dp"
android:layout_gravity="center_horizontal|top" />
<ListView
android:layout_width="match_parent"
android:layout_height="127dp"
android:id="#+id/listView"
android:layout_weight="1.22"
android:background="#android:drawable/screen_background_light_transparent" />
</LinearLayout>
And activity_settings...
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent"
android:weightSum="1"
android:background="#drawable/onericblur">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
style="?android:attr/listSeparatorTextViewStyle"
android:text="Settings"
android:id="#+id/textView"
android:layout_gravity="center_horizontal"
android:textSize="30dp"
android:textColor="#android:color/black" />
<TextView
android:layout_width="291dp"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceMedium"
android:text="Xecta is currently in Beta being tested, you can request settings by going to the feedback section. Sorry!"
android:id="#+id/textView2"
android:layout_weight="0.04"
android:layout_gravity="center_horizontal"
android:textSize="20dp"
android:gravity="center|top" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Back to home"
android:id="#+id/button3"
android:onClick="onClickBack"
android:layout_gravity="center_horizontal" />
</LinearLayout>
What could be causing the problem?!?!?
Thanks.

As suggested by Ram Kiran, it's better to have different activities for Settings / Home.
The problem with the code you have posted is that you are not populating the list with the contents when you press back. I believe it should be fixed with the following code,
public void onClickBack(View view)
{
setContentView(R.layout.activity_main);
ListView lv = (ListView) findViewById(R.id.listView);
lv.setAdapter(simpleAdpt);
}
Basically when you call setContentView(layoutId) new view will be inflated from the layout and you need to do all the UI lookup, initialization again.

I dont think loading xml files repeatedly in same activity is a good one. Try to use two activities instead of loading different xml files in same activity.
MainActivity.java
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ListView lv = (ListView) findviewById(R.id.list);
lv.setOnItemClickListener(new AdapterView.OnItemClickListener()
{
public void onItemClick(AdapterView<?> parentAdapter, View view, int position,
long id)
{
Intent n = new Intent(getApplicationContext(),SettingsActivity.class);
startActivity(n);
}
}
SettingsActivity.java
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Buttoon btn = (Button) findviewById(R.id.btn);
btn.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
Intent n = new Intent(getApplicationContext(),MainActivity.class);
startActivity(n);
}
});

Try out as below:
#Override
public void onResume()
{
super.onResume();
setContentView(R.layout.activity_main);
Intent intent = new Intent(this, BoundService.class);
bindService(intent, myConnection, Context.BIND_AUTO_CREATE);
//homeOnOff = (ToggleButton) findViewById(R.id.toggleButton);
name = (EditText) findViewById(R.id.etName);
email = (EditText) findViewById(R.id.etEmail);
mMessage = (EditText) findViewById(R.id.etAdd);
subject = (EditText) findViewById(R.id.txtSubject);
Button startBtn = (Button) findViewById(R.id.send);
backB1 = (Button)findViewById(R.id.button1);
backB2 = (Button)findViewById(R.id.button2);
backB3 = (Button)findViewById(R.id.button3);
//Initialize GUI elements
setSpeakButton();
//Initialize the speech recognizer
createRecognizer(getApplicationContext());
//Initialize text to speech
myTts = TTS.getInstance(this);
//Create bot
bot = new Bot(this, BOTID, myTts, "assistant");
initList();
// We get the ListView component from the layout
ListView lv = (ListView) findViewById(R.id.listView);
// This is a simple adapter that accepts as parameter
// Context
// Data list
// The row layout that is used during the row creation
// The keys used to retrieve the data
// The View id used to show the data. The key number and the view id must match
simpleAdpt = new SimpleAdapter(this, planetsList, android.R.layout.simple_list_item_1, new String[] {"page"}, new int[] {android.R.id.text1});
lv.setAdapter(simpleAdpt);
}