When I scroll on Recyclerview in my app it closes.
Here is a screenshot:
The main page of app- when i scroll the reyclerview of main page my app was force close:
This is my adapter:
public class RecyclerViewDataAdapter extends RecyclerView.Adapter<RecyclerViewDataAdapter.ItemRowHolder> {
private ArrayList<SectionDataModel> dataList;
private Context mContext;
private ImageView bg;
private boolean isLang;
public RecyclerViewDataAdapter(Context context, ArrayList<SectionDataModel> dataList) {
this.dataList = dataList;
this.mContext = context;
}
#Override
public ItemRowHolder onCreateViewHolder(ViewGroup viewGroup, int i) {
View v = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.list_item, null);
ItemRowHolder mh = new ItemRowHolder(v);
return mh;
}
#Override
public void onBindViewHolder(final ItemRowHolder itemRowHolder, int i) {
final String sectionName = dataList.get(i).getHeaderTitle();
final String sectionSub = dataList.get(i).getHeaderSubTitle();
final int sectionhesder = dataList.get(i).getHeader();
final int bgd = dataList.get(i).getPhoto();
final int bgg = dataList.get(i).getBg();
ArrayList singleSectionItems = dataList.get(i).getAllItemsInSection();
itemRowHolder.itemSubTitle.setText(sectionSub);
itemRowHolder.itemTitle.setText(sectionName);
itemRowHolder.bg.setImageResource(bgd);
itemRowHolder.bg.setBackgroundResource(bgg);
if (isLang = Locale.getDefault().getLanguage().equals("fa")) {
itemRowHolder.bg.setScaleType(ImageView.ScaleType.FIT_START);
} else {
itemRowHolder.bg.setScaleType(ImageView.ScaleType.FIT_END);
}
SectionListDataAdapter itemListDataAdapter = new SectionListDataAdapter(mContext, singleSectionItems);
itemRowHolder.recycler_view_list.setHasFixedSize(true);
itemRowHolder.recycler_view_list.setLayoutManager(new LinearLayoutManager(mContext, LinearLayoutManager.HORIZONTAL, false));
itemRowHolder.recycler_view_list.setAdapter(itemListDataAdapter);
itemRowHolder.recycler_view_list.setNestedScrollingEnabled(false);
/* itemRowHolder.recycler_view_list.setOnTouchListener(new View.OnTouchListener() {
#Override
public boolean onTouch(View v, MotionEvent event) {
int action = event.getAction();
switch (action) {
case MotionEvent.ACTION_DOWN:
// Disallow ScrollView to intercept touch events.
v.getParent().requestDisallowInterceptTouchEvent(true);
break;
case MotionEvent.ACTION_UP:
//Allow ScrollView to intercept touch events once again.
v.getParent().requestDisallowInterceptTouchEvent(false);
break;
}
// Handle RecyclerView touch events.
v.onTouchEvent(event);
return true;
}
});*/
itemRowHolder.btnMore.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent intent = new Intent(mContext, TopicActivity.class);
intent.putExtra("topicn",sectionName.toString());
intent.addFlags(Intent.FLAG_ACTIVITY_NO_ANIMATION);
mContext.startActivity(intent);
}
});
/* Glide.with(mContext)
.load(feedItem.getImageURL())
.diskCacheStrategy(DiskCacheStrategy.ALL)
.centerCrop()
.error(R.drawable.bg)
.into(feedListRowHolder.thumbView);*/
}
#Override
public int getItemCount() {
return (null != dataList ? dataList.size() : 0);
}
public class ItemRowHolder extends RecyclerView.ViewHolder {
protected RelativeLayout itemHeader;
protected TextView itemTitle;
protected TextView itemSubTitle;
protected RecyclerView recycler_view_list;
protected Button btnMore;
public ImageView bg;
public ItemRowHolder(View view) {
super(view);
this.itemTitle = (TextView) view.findViewById(R.id.itemTitle);
this.itemSubTitle = (TextView) view.findViewById(R.id.itemsub);
this.itemHeader = (RelativeLayout) view.findViewById(R.id.header);
this.recycler_view_list = (RecyclerView) view.findViewById(R.id.recycler_view_list);
this.btnMore= (Button) view.findViewById(R.id.btnMore);
this.bg= (ImageView) view.findViewById(R.id.bg);
}}}
Related
I am doing an app which auto-scrolls images, at the bottom of the screen there is a static layout, which I need to display the value of images that have already passed (i.e. position).
I get the correct value of images passed by implementing :
int position = holder.getAdapterPosition();
in the RecyclerViewListAdapter.java
now I need to display this value in the RecyclerViewListActivity.java
on a text view at the static layout beneath the Recycler view?
public class RecyclerViewListAdapter extends RecyclerView.Adapter {
Context context;
List<Data> dataList;
private SharedPreferences preferences;
public RecyclerViewListAdapter(Context context, List<Data> dataList) {
this.context = context;
this.dataList = dataList;
}
#Override
public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View itemView = LayoutInflater.from(parent.getContext()).inflate(R.layout.adapter_recycler_list, parent, false);
return new MyViewHolder(itemView);
}
#Override
public void onBindViewHolder(final MyViewHolder holder, final int position) {
holder.mImage.setImageResource(dataList.get(position).getImage());
holder.mImage.setImageResource(dataList.get(position).getImage());
**int position = holder.getAdapterPosition();**
}
#Override
public int getItemCount() {
if (dataList == null || dataList.size() == 0)
return 0;
return dataList.size();
}
public class MyViewHolder extends RecyclerView.ViewHolder {
TextView mNumberText,mText;
ImageView mImage;
LinearLayout mLinearLayout;
public MyViewHolder(View itemView) {
super(itemView);
mImage = (ImageView) itemView.findViewById(R.id.quran_page);
mLinearLayout = (LinearLayout) itemView.findViewById(R.id.linearLayout);
}
}
}
public class RecyclerViewListActivity extends AppCompatActivity {
RecyclerView mListRecyclerView;
ArrayList<Data> dataArrayList;
RecyclerViewListAdapter recyclerViewListAdapter ;
Runnable updater;
private boolean isTouch = false;
TextViewRemaining;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_recycler_view_list);
final TextView TextViewRemaining = (TextView) findViewById(R.id.TextViewRemaining);
**TextViewRemaining.setText("Position: "+position);**
initializeView();
mListRecyclerView.addOnItemTouchListener(new RecyclerTouchListener(this,
mListRecyclerView, new ClickListener() {
#Override
public void onClick(View view, int position) {
}
#Override
public void onLongClick(View view, int position) {
Toast.makeText(RecyclerViewListActivity.this, "Long press on position :" + position,
Toast.LENGTH_LONG).show();
}
}));
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
int id = item.getItemId();
return super.onOptionsItemSelected(item);
}
public static interface ClickListener{
public void onClick(View view,int position);
public void onLongClick(View view,int position);
}
class RecyclerTouchListener implements RecyclerView.OnItemTouchListener{
private ClickListener clicklistener;
private GestureDetector gestureDetector;
//#RequiresApi(api = Build.VERSION_CODES.CUPCAKE)
public RecyclerTouchListener(Context context, final RecyclerView recycleView, final ClickListener clicklistener){
this.clicklistener=clicklistener;
gestureDetector=new GestureDetector(context,new GestureDetector.SimpleOnGestureListener(){
#Override
public boolean onSingleTapUp(MotionEvent e) {
return true;
}
#Override
public void onLongPress(MotionEvent e) {
View child=recycleView.findChildViewUnder(e.getX(),e.getY());
if(child!=null && clicklistener!=null){
clicklistener.onLongClick(child,recycleView.getChildAdapterPosition(child));
}
}
});
}
#Override
public boolean onInterceptTouchEvent(RecyclerView rv, MotionEvent e) {
View child=rv.findChildViewUnder(e.getX(),e.getY());
if(child!=null && clicklistener!=null && gestureDetector.onTouchEvent(e)){
clicklistener.onClick(child,rv.getChildAdapterPosition(child));
}
return false;
}
#Override
public void onTouchEvent(RecyclerView rv, MotionEvent e) {
}
#Override
public void onRequestDisallowInterceptTouchEvent(boolean disallowIntercept) {
}
}
private void initializeView()
{
mListRecyclerView = (RecyclerView) findViewById(R.id.vR_recyclerViewList);
setValues();
}
private void setValues(){
prepareData();
recyclerViewListAdapter = new RecyclerViewListAdapter(RecyclerViewListActivity.this,dataArrayList);
mListRecyclerView.setLayoutManager(new LinearLayoutManager(RecyclerViewListActivity.this)); // original
mListRecyclerView.setItemAnimator(new DefaultItemAnimator());
mListRecyclerView.setHasFixedSize(false);
mListRecyclerView.setAdapter(recyclerViewListAdapter);
recyclerViewListAdapter.notifyDataSetChanged();
final int speedScroll = 2000; //default is 2000 it need to be 30000
final Handler handler = new Handler();
final Runnable runnable = new Runnable() {
int count = 0;
// boolean flag = true;
#Override
public void run() {
boolean x=true;
// while(x) {
if (count < recyclerViewListAdapter.getItemCount()) {
if (count == recyclerViewListAdapter.getItemCount() - 1) {
flag = false;
} else if (count == 0) {
flag = true;
}
}
if (flag) count++;
// else count--;
mListRecyclerView.smoothScrollToPosition(count);
handler.postDelayed(this, speedScroll);
}
};
handler.postDelayed(runnable,speedScroll);
}
private void prepareData(){
dataArrayList = new ArrayList<>();
Data data1 = new Data();
data1.setImage(R.drawable.p1);
dataArrayList.add(data1);
Data data2 = new Data();
data2.setImage(R.drawable.p2);
dataArrayList.add(data2);
Data data3 = new Data();
data3.setImage(R.drawable.p3);
dataArrayList.add(data3);
Data data4 = new Data();
data4.setImage(R.drawable.p4);
dataArrayList.add(data4);
Data data5 = new Data();
data5.setImage(R.drawable.p5);
dataArrayList.add(data5);
}
}
So, How can I show the position value on textView in a real-time, as position is a dynamic value, I expect the output on the textView to change as the images passed to the top.
Many Thanks in advance.
This how I solve my problem:
I save the position value in a power Preference(an easier version of shared Preferences)-many thanks to:
Ali Asadi(https://android.jlelse.eu/powerpreference-a-simple-approach-to-store-data-in-android-a2dad4ddc4ac)
I use a Thread that updates the textview every second-many thanks to:
https://www.youtube.com/watch?v=6sBqeoioCHE&t=149s
Thanks for all.
I get this error in the LogCat when I try to run the application.
java.lang.IllegalArgumentException: Context must not be null.
This happens when I add the Picasso code in the class.
here is the adpater.Java
It says the Context is null, I have read other posts but I could not find a solution.
public class Adapter extends RecyclerView.Adapter<Adapter.ViewHolder>{
private List<App> mApps;
private boolean mHorizontal;
private boolean mPager;
private Context mContext;
public Adapter(Context ctx, boolean horizontal, boolean pager, List<App> apps) {
mHorizontal = horizontal;
mApps = apps;
mPager = pager;
this.mContext=ctx;
}
#Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
if (mPager) {
return new ViewHolder(LayoutInflater.from(parent.getContext())
.inflate(R.layout.adaper_pager, parent, false));
} else {
return mHorizontal ? new ViewHolder(LayoutInflater.from(parent.getContext())
.inflate(R.layout.adapter, parent, false)) :
new ViewHolder(LayoutInflater.from(parent.getContext())
.inflate(R.layout.adapter_vertical, parent, false));
}
}
#Override
public void onBindViewHolder(ViewHolder holder, int position) {
App app = mApps.get(position);
//holder.imageView.setImageResource(app.getDrawable());
Picasso.with(mContext).load(app.getLink()).into(holder.imageView);
holder.nameTextView.setText(app.getName());
holder.ratingTextView.setText(String.valueOf(app.getRating()));
}
#Override
public int getItemViewType(int position) {
return super.getItemViewType(position);
}
#Override
public int getItemCount() {
return mApps.size();
}
public static class ViewHolder extends RecyclerView.ViewHolder {
public ImageView imageView;
public TextView nameTextView;
public TextView ratingTextView;
public ViewHolder(View itemView) {
super(itemView);
imageView = (ImageView) itemView.findViewById(R.id.igOne);
nameTextView = (TextView) itemView.findViewById(R.id.nameTV);
ratingTextView = (TextView) itemView.findViewById(R.id.rate);
}
}
}
Please Help. some say it is because the imageView is null. I have no idea about that.
MainActivity
public class MainActivity extends AppCompatActivity implements Toolbar.OnMenuItemClickListener {
private static final String TAG = "MainActivity";
private Context mContext = MainActivity.this;
private static final int ACTIVITY_NUM = 0;
public static final String ORIENTATION = "orientation";
private RecyclerView mRecyclerView;
private boolean mHorizontal;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Log.d(TAG, "OnCreate: Starting MainActivity");
setupBottomNavigationView();
mRecyclerView = (RecyclerView) findViewById(R.id.recyclerView);
mRecyclerView.setLayoutManager(new LinearLayoutManager(this));
mRecyclerView.setHasFixedSize(true);
if (savedInstanceState == null) {
mHorizontal = true;
} else {
mHorizontal = savedInstanceState.getBoolean(ORIENTATION);
}
setupAdapter();
}
/**
* Setup Bottom Navigation View
*/
private void setupBottomNavigationView() {
Log.d(TAG, "setupBottomNavigationView: Setting up Bottom Navigation View");
BottomNavigationViewEx bottomNavigationViewEx = (BottomNavigationViewEx) findViewById(R.id.bottom_nav_bar);
BottomNavigationViewHelper.setupBottomNavigationView(bottomNavigationViewEx);
BottomNavigationViewHelper.enableNavigation(mContext, bottomNavigationViewEx);
Menu menu = bottomNavigationViewEx.getMenu();
MenuItem menuItem = menu.getItem(ACTIVITY_NUM);
menuItem.setChecked(true);
}
public void click(View v) {
Intent mIntent = null;
switch (v.getId()) {
case R.id.serve:
mIntent = new Intent(this, SearchActivity.class);
break;
case R.id.imageButton2:
mIntent = new Intent(this, SearchActivity.class);
break;
}
startActivity(mIntent);
}
///////////
#Override
protected void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
outState.putBoolean(ORIENTATION, mHorizontal);
}
private void setupAdapter() {
List<App> apps = getApps();
SnapAdapter snapAdapter = new SnapAdapter();
if (mHorizontal) {
snapAdapter.addSnap(new Snap(Gravity.CENTER_HORIZONTAL, "Snap Start", apps));
snapAdapter.addSnap(new Snap(Gravity.START, "Snap Middle", apps));
snapAdapter.addSnap(new Snap(Gravity.END, "Snap End", apps));
snapAdapter.addSnap(new Snap(Gravity.CENTER, "Pager snap", apps));
} else {
snapAdapter.addSnap(new Snap(Gravity.CENTER_VERTICAL, "Snap center", apps));
snapAdapter.addSnap(new Snap(Gravity.TOP, "Snap top", apps));
snapAdapter.addSnap(new Snap(Gravity.BOTTOM, "Snap bottom", apps));
}
mRecyclerView.setAdapter(snapAdapter);
}
private List<App> getApps() {
List<App> apps = new ArrayList<>();
apps.add(new App("Google+", "http://uupload.ir/files/aud7_brickone.jpg", 4.6f));
return apps;
}
#Override
public boolean onMenuItemClick(MenuItem item) {
return false;
}
}
SnapAdapter
public class SnapAdapter extends RecyclerView.Adapter<SnapAdapter.ViewHolder> implements GravitySnapHelper.SnapListener {
public static final int VERTICAL = 0;
public static final int HORIZONTAL = 1;
private Context mContext;
private ArrayList<Snap> mSnaps;
// Disable touch detection for parent recyclerView if we use vertical nested recyclerViews
private View.OnTouchListener mTouchListener = new View.OnTouchListener() {
#Override
public boolean onTouch(View v, MotionEvent event) {
v.getParent().requestDisallowInterceptTouchEvent(true);
return false;
}
};
public SnapAdapter() {
mSnaps = new ArrayList<>();
}
public void addSnap(Snap snap) {
mSnaps.add(snap);
}
#Override
public int getItemViewType(int position) {
Snap snap = mSnaps.get(position);
switch (snap.getGravity()) {
case Gravity.CENTER_VERTICAL:
return VERTICAL;
case Gravity.CENTER_HORIZONTAL:
return HORIZONTAL;
case Gravity.START:
return HORIZONTAL;
case Gravity.TOP:
return VERTICAL;
case Gravity.END:
return HORIZONTAL;
case Gravity.BOTTOM:
return VERTICAL;
}
return HORIZONTAL;
}
#Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = viewType == VERTICAL ? LayoutInflater.from(parent.getContext())
.inflate(R.layout.adapter_snap_vertical, parent, false)
: LayoutInflater.from(parent.getContext())
.inflate(R.layout.adapter_snap, parent, false);
if (viewType == VERTICAL) {
view.findViewById(R.id.recycle_view).setOnTouchListener(mTouchListener);
}
return new ViewHolder(view);
}
#Override
public void onBindViewHolder(ViewHolder holder, int position) {
Snap snap = mSnaps.get(position);
holder.snapTextView.setText(snap.getText());
if (snap.getGravity() == Gravity.START || snap.getGravity() == Gravity.END) {
holder.recyclerView.setLayoutManager(new LinearLayoutManager(holder
.recyclerView.getContext(), LinearLayoutManager.HORIZONTAL, false));
holder.recyclerView.setOnFlingListener(null);
new GravitySnapHelper(snap.getGravity(), false, this).attachToRecyclerView(holder.recyclerView);
} else if (snap.getGravity() == Gravity.CENTER_HORIZONTAL) {
holder.recyclerView.setLayoutManager(new LinearLayoutManager(holder
.recyclerView.getContext(), snap.getGravity() == Gravity.CENTER_HORIZONTAL ?
LinearLayoutManager.HORIZONTAL : LinearLayoutManager.VERTICAL, false));
holder.recyclerView.setOnFlingListener(null);
new LinearSnapHelper().attachToRecyclerView(holder.recyclerView);
} else if (snap.getGravity() == Gravity.CENTER) { // Pager snap
holder.recyclerView.setLayoutManager(new LinearLayoutManager(holder
.recyclerView.getContext(), LinearLayoutManager.HORIZONTAL, false));
holder.recyclerView.setOnFlingListener(null);
new PagerSnapHelper().attachToRecyclerView(holder.recyclerView);
} else { // Top / Bottom
holder.recyclerView.setLayoutManager(new LinearLayoutManager(holder
.recyclerView.getContext()));
holder.recyclerView.setOnFlingListener(null);
new GravitySnapHelper(snap.getGravity()).attachToRecyclerView(holder.recyclerView);
}
holder.recyclerView.setAdapter(new Adapter(mContext, snap.getGravity() == Gravity.START
|| snap.getGravity() == Gravity.END
|| snap.getGravity() == Gravity.CENTER_HORIZONTAL,
snap.getGravity() == Gravity.CENTER, snap.getApps()));
}
#Override
public int getItemCount() {
return mSnaps.size();
}
#Override
public void onSnap(int position) {
Log.d("Snapped: ", position + "");
}
public static class ViewHolder extends RecyclerView.ViewHolder {
public TextView snapTextView;
public RecyclerView recyclerView;
public ViewHolder(View itemView) {
super(itemView);
snapTextView = (TextView) itemView.findViewById(R.id.snapTextView);
recyclerView = (RecyclerView) itemView.findViewById(R.id.recycle_view);
}
}
}
java.lang.IllegalArgumentException: Context must not be null.
A constructor in Java is a block of code similar to a method that's
called when an instance of an object is created.
You should pass Context
private Context mContext;
public Adapter(Context ctx,boolean horizontal, boolean pager, List<App> apps) {
mHorizontal = horizontal;
mApps = apps;
mPager = pager;
this.mContext=ctx; // Call here
}
Logcat Throws
the error is: Error:(110, 40) error: constructor Adapter in class
Adapter cannot be applied to given types; required:
boolean,boolean,List,Context found: boolean,boolean,List
reason: actual and formal argument lists differ in length
Pass Value LIKE
new Adapter(Your_Activity.this, boolean, boolean , List<App>);
Call Adapter like this
Adapter mAdapter = new Adapter (Youractivity_name.this, boolean, boolean , list);
and change the constructor to
public Adapter(Context context ,boolean horizontal, boolean pager, List<App> apps) {
mHorizontal = horizontal;
mApps = apps;
mPager = pager;
mContext = context;
}
I have to hide all the checkboxes for every [Position] product until User click button. When ever user clicks button check boxes will be show to select items for delete. Only check box will appear to change not whole grid view.
public class CartAdapter extends BaseAdapter {
Context context;
ArrayList<ProductCount> productCounts;
private LayoutInflater inflater;
private ImageButton plusButton;
private ImageButton minusButton;
private CheckBox selectToDelete;
private onDeleteCartItem onDeleteCartItem = null;
public CartAdapter(Context context, ArrayList<ProductCount> productCounts, onDeleteCartItem selectChangeListener) {
this.context = context;
this.productCounts = productCounts;
inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
this.onDeleteCartItem = selectChangeListener;
}
#Override
public int getCount() {
if(productCounts!=null)
return productCounts.size();
return 0;
}
#Override
public Object getItem(int position) {
if(productCounts!=null && position >=0 && position<getCount())
return productCounts.get(position);
return null;
}
#Override
public long getItemId(int position) {
if(productCounts!=null && position >=0 && position<getCount()){
ProductCount temp = productCounts.get(position);
return productCounts.indexOf(temp);
}
return 0;
}
public class ProductsListHolder{
public ImageView cart_item_img;
public TextView cart_item_desc;
public TextView cart_item_count;
public TextView cart_item_price_tag;
public TextView cart_item_price;
public ImageButton cart_item_minus;
public ImageButton cart_item_plus;
}
#Override
public View getView(final int position, View convertView, ViewGroup parent) {
View view = convertView;
final ProductsListHolder productsListHolder;
if(view == null){
view = inflater.inflate(R.layout.cart_adapter, parent, false);
productsListHolder = new ProductsListHolder();
productsListHolder.cart_item_img = (ImageView) view.findViewById(R.id.cart_item_img);
productsListHolder.cart_item_desc = (TextView) view.findViewById(R.id.cart_item_desc);
productsListHolder.cart_item_count = (TextView) view.findViewById(R.id.cart_item_count);
productsListHolder.cart_item_price_tag = (TextView) view.findViewById(R.id.cart_item_price_tag);
productsListHolder.cart_item_price = (TextView) view.findViewById(R.id.cart_item_price);
plusButton = (ImageButton) view.findViewById(R.id.cart_item_plus);
minusButton = (ImageButton) view.findViewById(R.id.cart_item_minus);
selectToDelete = (CheckBox) view.findViewById(R.id.select_to_delete);
selectToDelete.setTag(position);
view.setTag(productsListHolder);
}
else{
productsListHolder = (ProductsListHolder) view.getTag();
}
final ProductCount cat = productCounts.get(position);
selectToDelete.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
#Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
if(isChecked){
if(onDeleteCartItem != null){
onDeleteCartItem.onSelectToDelete((Integer)buttonView.getTag(),isChecked);
}
}
}
});
minusButton.setOnClickListener(new View.OnClickListener() {
int itemcount = 0;
#Override
public void onClick(View v) {
itemcount = productCounts.get(position).getCount();
productCounts.get(position).setCount(itemcount-1);
setProduct(position,productsListHolder,cat);
}
});
plusButton.setOnClickListener(new View.OnClickListener() {
int itemcount = 0;
#Override
public void onClick(View v) {
itemcount = productCounts.get(position).getCount();
productCounts.get(position).setCount(itemcount+1);
setProduct(position,productsListHolder,cat);
}
});
setProduct(position,productsListHolder,cat);
return view;
}
private void setProduct(int position, final ProductsListHolder productsListHolder, ProductCount pCount) {
Picasso.with(context).load(pCount.products.getImageResours()).into(new Target(){
#Override
public void onBitmapLoaded(Bitmap bitmap, Picasso.LoadedFrom from) {
productsListHolder.cart_item_img.setBackground(new BitmapDrawable(context.getResources(), bitmap));
}
#Override
public void onBitmapFailed(final Drawable errorDrawable) {
}
#Override
public void onPrepareLoad(final Drawable placeHolderDrawable) {
}
});
productsListHolder.cart_item_desc.setText(pCount.getProducts().getDescription());
productsListHolder.cart_item_price_tag.setText((String.valueOf(pCount.getCount()).concat(" x Rs. ").concat(String.valueOf((pCount.products.getPrice())))));
productsListHolder.cart_item_price.setText("Rs. ".concat(String.valueOf(pCount.getCount()* pCount.products.getPrice())));
productsListHolder.cart_item_count.setText(String.valueOf(pCount.getCount()));
}
#Override
public void notifyDataSetChanged() {
super.notifyDataSetChanged();
}
}
Just handling your checkBox in your adapter because you got the position then can hide/show, OnClickListener, OnCheckedChangeListener however you want.
Reference to my answer here: Is there a simple way to check all CheckBox items in custimize BaseAdapter in android?
When back to previous activity or I get out the app is closed and show this error:
E/RecyclerView: No adapter attached; skipping layout
Within a asycntask in his method onPostExecute I declare a recycleview and RecyclerView.LayoutManager but no have idea what it's wrong. I need your help to solve this problem. Below is my code:
#Override
public void onPostExecute(List<Modules> result) {
if (pDialog.isShowing()){
RecyclerView.LayoutManager Manager =new LinearLayoutManager(DepartureModule.this);
RecyclerView.Adapter adapter = new ModuleAdapter(result);
RecyclerView RVODetails = (RecyclerView) findViewById(R.id.RVODetails);
RVODetails.setLayoutManager(Manager);
RVODetails.setAdapter(adapter);
pDialog.dismiss();
}
and this is my adapter class:
public class ModuleViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
ItemClickListener itemClickListener;
public final ImageButton Actions;
public final ImageView Image;
public final TextView ModuleCode;
public final TextView ModuleDescription;
public final TextView ModuleDate;
public String ModuleIds;
public ModuleViewHolder(View itemView) {
super(itemView);
Image = (ImageView)itemView.findViewById(R.id.logo);
Actions = (ImageButton)itemView.findViewById(R.id.Actions);
//TitleModuleCode = (TextView)itemView.findViewById(R.id.TitleModuleCode);
ModuleCode = (TextView)itemView.findViewById(R.id.ModuleCode);
//TitleModuleDescription = (TextView)itemView.findViewById(R.id.TitleModuleDescription);
ModuleDescription = (TextView)itemView.findViewById(R.id.ModuleDescription);
ModuleDate = (TextView)itemView.findViewById(R.id.ModuleDate);
itemView.setOnClickListener(this);
}
#Override
public void onClick(View view) {
this.itemClickListener.OnItemClick(view,getLayoutPosition());
// Toast.makeText(view.getContext(), "POS" + getLayoutPosition()
// , Toast.LENGTH_LONG).show();
}
public void setItemClickListener(ItemClickListener ItemClick){
this.itemClickListener = ItemClick;
}
}
public ModuleAdapter(List<Modules> Items){
this.Items = Items;
}
#Override
public int getItemCount() {
return Items.size();
}
#Override
public ModuleViewHolder onCreateViewHolder(ViewGroup viewGroup, int i) {
View view = LayoutInflater.from(viewGroup.getContext())
.inflate(R.layout.layout_cardview,viewGroup,false);
return new ModuleViewHolder(view);
}
#Override
public void onBindViewHolder(final ModuleViewHolder ViewHolder, final int position) {
context = ViewHolder.itemView.getContext();
Typeface typeface = Typeface.createFromAsset(context.getAssets(),
"fonts/CaviarDreams.ttf");
ViewHolder.Image.setImageResource(Items.get(position).getImages());
ViewHolder.Actions.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
ShowPopupMenu(ViewHolder.Actions,position,ViewHolder);
}
});
ViewHolder.ModuleCode.setText(Items.get(position).getModule());
ViewHolder.ModuleCode.setTypeface(typeface); ViewHolder.ModuleDescription.setText(Items.get(position).getDescription());
ViewHolder.ModuleDescription.setTypeface(typeface);
ViewHolder.ModuleDate.setText(Items.get(position).getDate());
ViewHolder.ModuleDate.setTypeface(typeface);
ViewHolder.ModuleIds = Items.get(position).getModuleIds();
ViewHolder.setItemClickListener(new ItemClickListener() {
#Override
public void OnItemClick(View view, int Pos) {
//Toast.makeText(context, "POSITION :" + Pos, Toast.LENGTH_SHORT).show();
}
});
}
private void ShowPopupMenu (final View view, final int position,final ModuleViewHolder holder){
menu.setOnMenuItemClickListener(new PopupMenu.OnMenuItemClickListener() {
#Override
public boolean onMenuItemClick(MenuItem item) {
switch (item.getItemId()){
case R.id.action_modify:
final Connection connectionupdate = new Connection(context,Connection.DATABASE_NAME,null,
Connection.DATABASE_VERSION);
final SQLiteDatabase dbUpdate = connectionupdate.getWritableDatabase();
Typeface typeface = Typeface.createFromAsset(context.getAssets(),"fonts/CaviarDreams.ttf");
AlertDialog.Builder ModifyModule = new AlertDialog.Builder(context);
LayoutInflater modifyinflater = (LayoutInflater)context.getSystemService
(Context.LAYOUT_INFLATER_SERVICE);
final View viewmodify = modifyinflater.inflate(R.layout.layout_custom_dialog_create_modules,null);
TILM = (TextInputLayout)viewmodify.findViewById(R.id.TILM);
TILM.setTypeface(typeface);
TILD = (TextInputLayout)viewmodify.findViewById(R.id.TILD);
TILD.setTypeface(typeface);
ModuleCodeE = (EditText)viewmodify.findViewById(R.id.ModuleCode);
ModuleCodeE.setTypeface(typeface);
ModuleDescE = (EditText)viewmodify.findViewById(R.id.ModuleDesc);
ModuleDescE.setTypeface(typeface);
ModuleCodeE.setText(Items.get(position).getModule());
ModuleDescE.setText(Items.get(position).getDescription());
final String Id = Items.get(position).getModuleIds();
ModifyModule.setView(viewmodify);
ModifyModule.setIcon(R.drawable.logomini);
ModifyModule.setTitle("Construmuebles FM");
ModifyModule.setMessage(" Modifica los valores en los siguientes campos :");
ModifyModule.setPositiveButton("Actualizar", new DialogInterface.OnClickListener(){
#Override
public void onClick(DialogInterface dialogInterface, int i) {
ContentValues VUpdate = new ContentValues();
VUpdate.put(Database.CamposModuloDetails.KEY_MODULE_CODE,ModuleCodeE.getText().toString()); VUpdate.put(Database.CamposModuloDetails.KEY_MODULE_DESC,ModuleDescE.getText().toString());
long IdUpdate = dbUpdate.update(Database.MODULE_DETAILS_TABLE,VUpdate,Database.CamposModuloDetails
.KEY_MODULE_DETAILS_ID + " = ?",new String []{Id});
new UpdateCardView(context,IdUpdate).execute();
dialogInterface.dismiss();
}
});
ModifyModule.setNegativeButton("Cancelar", new DialogInterface
.OnClickListener() {
#Override
public void onClick(DialogInterface dialogInterface, int i) {
dialogInterface.dismiss();
}
});
ModifyModule.show();
return true;
case R.id.action_delete:
new DeleteCardView(context,holder,position).execute();
return true;
}
return false;
}
});
menu.show();
}
class DeleteCardView extends AsyncTask<Void,Void,Long>{
private ProgressDialog pDialog;
ModuleViewHolder holder;
int position;
public DeleteCardView(Context context,ModuleViewHolder holder,int position) {
pDialog = new ProgressDialog(context);
this.holder = holder;
this.position = position;
}
#Override
protected void onPreExecute() {
pDialog.setMessage(" Eliminado registro...");
pDialog.show();
}
#Override
protected Long doInBackground(Void... voids) {
String ModuleIdCardView = holder.ModuleIds;
Connection connection = new Connection(context, Connection.DATABASE_NAME, null,
Connection.DATABASE_VERSION);
long i = connection.DeleteByIdCardView(ModuleIdCardView);
if (i != 0) {
return i;
} else {
return i;
}
}
#Override
protected void onPostExecute(Long Result) {
if (pDialog.isShowing()){
pDialog.dismiss();
Items.remove(position);
notifyItemRemoved(position);
notifyItemRangeChanged(position,Items.size());
if (Items.size()==0){ /**viewPager.setCurrentItem(0);**/ }
}
}
}
}
Rearrange your code as follows
recyclerView = (RecyclerView) findViewById(R.id.RVODetails);
mAdapter = new ModuleAdapter(result);
RecyclerView.LayoutManager mLayoutManager = new LinearLayoutManager(getApplicationContext());
recyclerView.setLayoutManager(mLayoutManager);
recyclerView.setItemAnimator(new DefaultItemAnimator());
recyclerView.setAdapter(mAdapter);
}
Android recyclerview item click event after update Recyclerview
Image description here
Mail 1 READ
Mail 2 Dont Read
In the item the click event I want to do this to me
How can you help make
public class Mesajlar_Adapter extends RecyclerView.Adapter<Mesajlar_Adapter.ViewHolder>{
private List<Mesajlar> resultModels;
private Context context;
public Mesajlar_Adapter(List<Mesajlar> resultModels, Context context) {
this.resultModels = resultModels;
this.context = context;
}
#Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.mesajlar_listview_desing, parent, false);
ViewHolder view_holder = new ViewHolder(v);
return view_holder;
}
public void resetList() {
int size = this.resultModels.size();
if (size > 0) {
for (int i = 0; i < size; i++) {
resultModels.remove(0);
}
this.notifyItemRangeRemoved(0, size);
}
}
public void addItem(Mesajlar item){
this.resultModels.add(item);
this.notifyDataSetChanged();
}
#Override
public void onBindViewHolder(final ViewHolder holder, final int position) {
holder.mesaj_id.setText(resultModels.get(position).getMESAJ_ID());
holder.kullanici_id.setText(resultModels.get(position).getKULLANICI());
holder.gelen_detay.setText(resultModels.get(position).getDETAY());
holder.kategori.setText(resultModels.get(position).getKATEGORI());
holder.konu.setText(resultModels.get(position).getKONU());
holder.tarih.setText(resultModels.get(position).getKAYIT_TARIHI());
String a = resultModels.get(position).getOKUNDU();
holder.okunma.setText(a);
if (a.equals("Hayir")){
holder.kategori.setTextColor(Color.BLACK);
holder.kategori.setTextSize(19);
holder.konu.setTextColor(Color.BLACK);
holder.konu.setTextSize(19);
holder.tarih.setTextColor(Color.BLACK);
}
}
#Override
public int getItemCount() {
return resultModels.size();
}
public class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener{
protected TextView mesaj_id;
protected TextView kullanici_id;
protected TextView gelen_detay;
protected TextView konu;
protected TextView kategori;
protected TextView tarih;
protected CheckBox secim;
protected TextView okunma;
public ViewHolder(View view) {
super(view);
this.okunma =(TextView) view.findViewById(R.id.okunma);
this.mesaj_id = (TextView) view.findViewById(R.id.mesaj_id);
this.kullanici_id = (TextView) view.findViewById(R.id.kullanici_id);
this.gelen_detay = (TextView) view.findViewById(R.id.gelen_detay);
this.konu = (TextView) view.findViewById(R.id.Konu);
this.kategori = (TextView) view.findViewById(R.id.Kategori);
this.tarih = (TextView) view.findViewById(R.id.Tarih);
// this.secim = (CheckBox) view.findViewById(R.id.secim);
view.setOnClickListener(this);
}
#Override
public void onClick(View view) {
Intent i=new Intent(context, Mesaj_Detay_Activity.class);
i.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
String detay = gelen_detay.getText().toString();
String mesajid = mesaj_id.getText().toString();
String kullaniciid = kullanici_id.getText().toString();
i.putExtra("detay", detay);
i.putExtra("mesaj_id",mesajid);
i.putExtra("kullanici_id",kullaniciid);
context.startActivity(i);
}
}
}
First of all, add this interface for click event
public interface OnRecyclerItemViewClickListener {
void onClicked(int position, Mesajlar jar);
}
Model
public class Mesajlar {
...
boolean isClicked;
public boolean isClicked() {
return icClicked;
}
public void setClicked(boolean isClicked) {
this.isClicked = isClicked;
}
...
}
Adapter
private OnRecyclerItemViewClickListener listener;
public Mesajlar_Adapter(List<Mesajlar> resultModels, Context context, OnRecyclerItemViewClickListener listener) {
...
this.listener = listener;
}
...
#Override
public void onBindViewHolder(final ViewHolder holder, final int position) {
if (resultModels.get(position).isClicked()) {
// change pressed background color here!
} else {
// change default background color here!
}
holder.itemView.setOnClickListener(v -> {
listener.onClicked(position, resultModels.get(position));
});
...
}
Activity
When you create RecyclerView Adapter, add OnRecyclerItemViewClickListener to constructor of adapter in Activity
Mesajlar_Adapter adapter = new Mesajlar_Adapter(list, context, new OnRecyclerItemViewClickListener {
#Override
public void onClicked(int position, Mesajlar jar) {
jar.setClicked(true);
adapter.notifyItemChanged(position);
Intent i = new Intent(YourActivity.this, Mesaj_Detay_Activity.class);
i.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
i.putExtra("detay", jar.getDETAY());
i.putExtra("mesaj_id",jar.getMESAJ_ID());
i.putExtra("kullanici_id", jar.getKULLANICI());
startActivity(i);
}
});
Instead of handling click event in adapter level you can use interface and do it in activity level. Pass the adapter position to the activity, from activity you can do the actual process
see the sample http://wiki.workassis.com/android-recyclerview-example/