I'm struggling to find a way to add a native ad within my app on Android.
MainActivity Class:
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.tab1, container, false);
final String[] numbers = {"one","two", "", "three", "four", "five","six","seven" "eight","nine", "ten" "eleven","twelve", "thirteen"};
Integer[] images = {0,1,2,3,4,5,6,7,8,9,10,11,12,13
};
CustomListAdapter adapter=new CustomListAdapter(this.getActivity(), mobileArray, images);
NativeExpressAdView adView = (NativeExpressAdView) rootView.findViewById(R.id.adView);
AdRequest request = new AdRequest.Builder().build();
adView.loadAd(request);
list=(ListView) rootView.findViewById(R.id.list_view);
list.setAdapter(adapter);
CustomListAdapter Class:
public class CustomListAdapter extends ArrayAdapter<String> {
private final Activity context;
private final String[] numbers;
private final Integer[] imgid;
public CustomListAdapter(Activity context, String[] numbers, Integer[] imgid) {
super(context, R.layout.listv, itemname);
// TODO Auto-generated constructor stub
this.context=context;
this.numbers=numbers;
this.imgid=imgid;
}
public View getView(int position,View view,ViewGroup parent) {
LayoutInflater inflater=context.getLayoutInflater();
View rowView=inflater.inflate(R.layout.listv, null,true);
NativeExpressAdView adView = (NativeExpressAdView) rowView.findViewById(R.id.adView);
TextView txtTitle = (TextView) rowView.findViewById(R.id.number);
ImageView imageView = (ImageView) rowView.findViewById(R.id.imgid);
TextView extratxt = (TextView) rowView.findViewById(R.id.textView1);
txtTitle.setText(numbers[position]);
imageView.setImageResource(imgid[position]);
extratxt.setText("Number: "numbers[position]);
return rowView;
};
}
I want to add the native add within a particular index in array, ideally where it shows "". I'm trying to add the adView into the adapter but unsure how to do this.
Edit:
listv layout:
<?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"
xmlns:ads="http://schemas.android.com/apk/res-auto"
android:orientation="horizontal">
<ImageView
android:id="#+id/imgid"
android:layout_width="60dp"
android:layout_height="60dp"
android:padding="5dp" />
<LinearLayout android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical">
<TextView
android:id="#+id/number"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceMedium"
android:layout_marginLeft="10dp"
android:layout_marginTop="5dp"
android:padding="2dp"
android:textColor="#4CBE99" />
<TextView
android:id="#+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="10dp"/>
</LinearLayout>
</LinearLayout>
<com.google.android.gms.ads.NativeExpressAdView
android:id="#+id/adView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:visibility="visible"
android:layout_gravity="center"
ads:adSize="345x80"
ads:adUnitId="ca-app-pub-3940256099942544/2793859312"></com.google.android.gms.ads.NativeExpressAdView>
You can try like this,
public class CustomListAdapter extends ArrayAdapter<String> {
private NativeExpressAdView adView;
private NativeExpressAdView getAddView() {
if (adView != null) {
return adView;
}
adView = new NativeExpressAdView(context);
adView.setAdUnitId("[your unit id]");
adView.setAdSize(new AdSize(AdSize.FULL_WIDTH, 80));
LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT);
adView.setLayoutParams(layoutParams);
AdRequest request = new AdRequest.Builder().build();
adView.loadAd(request);
return adView;
}
public View getView(int position, View view, ViewGroup parent) {
LayoutInflater inflater = context.getLayoutInflater();
View rowView = inflater.inflate(R.layout.layout_add, null, true);
// NativeExpressAdView adView = (NativeExpressAdView) rowView.findViewById(R.id.adView);
LinearLayout linearLayout = (LinearLayout) rowView.findViewById(R.id.addView);
linearLayout.removeAllViews();
TextView txtTitle = (TextView) rowView.findViewById(R.id.number);
ImageView imageView = (ImageView) rowView.findViewById(R.id.imgid);
TextView extratxt = (TextView) rowView.findViewById(R.id.textView1);
txtTitle.setText(numbers[position]);
imageView.setImageResource(imgid[position]);
extratxt.setText("Number: " + numbers[position]);
if (position == 2) {
linearLayout.addView(getAddView());
linearLayout.setVisibility(View.VISIBLE);
} else {
linearLayout.removeAllViews();
linearLayout.setVisibility(View.GONE);
}
return rowView;
}
;
}
Layour xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:ads="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal">
<ImageView
android:id="#+id/imgid"
android:layout_width="60dp"
android:layout_height="60dp"
android:padding="5dp"/>
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical">
<TextView
android:id="#+id/number"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="10dp"
android:layout_marginTop="5dp"
android:padding="2dp"
android:textAppearance="?android:attr/textAppearanceMedium"
android:textColor="#4CBE99"/>
<TextView
android:id="#+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="10dp"/>
</LinearLayout>
</LinearLayout>
<LinearLayout
android:id="#+id/addView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"></LinearLayout>
</LinearLayout>
Related
I tried a lot of solutions but no solution has worked for me.
I am getting data from the server and showing it inside a recycleview. The data shows fine but shows this error in the logcat
Access denied finding property "persist.vendor.log.tel_dbg"
E/RecyclerView: No adapter attached; skipping layout
E/RecyclerView: No adapter attached; skipping layout
sometimes when I refresh again and again the recyclerview becomes empty.
I am using viewpager consisting of 2 fragments inside a parent fragment.
this recycleview is using in a nested scrollview
some time data not showing
Code snippet:
homebuyer_adapter_recycler=new homebuyer_adapter_recycle(getActivity(), items);
LinearLayoutManager home = new LinearLayoutManager(getActivity());
home.setOrientation(LinearLayoutManager.VERTICAL);
allitemsgrid.setLayoutManager(home);
allitemsgrid.setAdapter(r);
Here is more about
#Override
public ViewHolder onCreateViewHolder(#NonNull ViewGroup parent,
final int viewType) {
View v = LayoutInflater.from(context).inflate(R.layout.items_view,parent,
false);
RecyclerView.LayoutParams lp = new
RecyclerView.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT,
ViewGroup.LayoutParams.WRAP_CONTENT);
v.setLayoutParams(lp);
ViewHolder viewHolder = new ViewHolder(v);
HERE IS MY item view
<?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="wrap_content"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:orientation="vertical">
<androidx.cardview.widget.CardView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="3dp"
app:cardCornerRadius="6dp"
android:layout_marginBottom="3dp"
app:cardBackgroundColor="#color/white">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="150dp">
<com.makeramen.roundedimageview.RoundedImageView
android:layout_width="match_parent"
android:layout_height="150dp"
app:riv_corner_radius="6dp"
android:id="#+id/image_items"
android:scaleType="fitXY"
/>
<com.makeramen.roundedimageview.RoundedImageView
android:layout_width="match_parent"
android:layout_height="150dp"
app:riv_corner_radius="6dp"
android:background="#drawable/blackshade"
android:scaleType="fitXY"/>
<TextView
android:id="#+id/items_all"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="#dimen/_5sdp"
android:textColor="#color/white"
android:fontFamily="sans-serif-smallcaps"
android:paddingLeft="20dp"
android:text="Message" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingLeft="20dp"
android:text="Timing"
android:padding="#dimen/_5sdp"
android:textColor="#color/white"
android:layout_alignParentBottom="true"
android:fontFamily="#font/mylight"
android:layout_alignParentRight="true"
android:textSize="10dp"
android:id="#+id/shoptimming"/>
</RelativeLayout>
<TextView
android:id="#+id/name_item"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="5dp"
android:alpha="0.6"
android:fontFamily="#font/arimo_bold"
android:paddingLeft="20dp"
android:text="Name"
android:textColor="#color/black"
android:textSize="17dp"
/>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="2dp"
android:orientation="horizontal">
<TextView
android:id="#+id/minumum_order"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="5dp"
android:layout_weight="1"
android:drawablePadding="10dp"
android:fontFamily="sans-serif"
android:paddingLeft="20dp"
android:text="Minimum " />
<TextView
android:id="#+id/price_item"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:fontFamily="sans-serif"
android:gravity="left"
android:paddingLeft="20dp"
android:text="charges"
/>
</LinearLayout>
</LinearLayout>
</androidx.cardview.widget.CardView>
</LinearLayout>
Here is my adapter class
public class homebuyer_adapter_recycle extends RecyclerView.Adapter<homebuyer_adapter_recycle.ViewHolder> {
private ArrayList<seller_information> listData;
private LayoutInflater layoutInflater;
int lastpostition=-1;
Context context;
public homebuyer_adapter_recycle(Context aContext, ArrayList<seller_information> listData) {
this.listData = listData;
layoutInflater = LayoutInflater.from(aContext);
context=aContext;
}
#NonNull
#Override
public ViewHolder onCreateViewHolder
(#NonNull ViewGroup parent, final
int viewType) {
View v = LayoutInflater.from(parent.getContext()).
inflate(R.layout.items_view,parent, false);
ViewHolder viewHolder = new ViewHolder(v);
Log.i("inadapter","calling time");
v.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
phone_number_shop = listData.get(viewType).getPhonenumber();
homebuyer.Delivery_charges_shop =
listData.get(viewType).getDiliveryfee();
homebuyer.Shop_name = listData.get(viewType).getShopname();
homebuyer.minimum_order = listData.get(viewType).getMinorder();
//profession=items.get(i).getName();
// Toast.makeText(getActivity(),phn,Toast.LENGTH_SHORT).show();
all_and_cetegory_items items = new all_and_cetegory_items();
Bundle b = new Bundle();
b.putString("phone",homebuyer.phone_number_shop);
items.setArguments(b);
FragmentTransaction fragmentTransaction =
((AppCompatActivity)context).getSupportFragmentManager()
.beginTransaction();
fragmentTransaction.replace(R.id.nav_host_fragment, items);
fragmentTransaction.addToBackStack(null).commit();
}
});
return viewHolder;
}
#Override
public void onBindViewHolder(#NonNull ViewHolder holder, int position) {
holder.name.setText(listData.get(position).getShopname());
//
Picasso.with(context).load(listData.get(position)
.getShopimage()).into(holder.shopimage);
Glide.with(context).load(listData.get(position).getShopimage())
.into(holder.shopimage);
holder.dilivery.setText("Rs "+listData.get(position).getDiliveryfee()+"
Delivery fee");
holder.minorder.setText("Rs "+listData.get(position).getMinorder()+" minimum");
holder.items.setText(listData.get(position).getShopmessage());
holder.time.setText("Service Available
"+listData.get(position).getStartingtime()+" to
"+listData.get(position).getEndingtime());
Log.i("inadapter","calling time"+listData.get(position).getShopname());
}
#Override
public int getItemCount() {
return listData.size();
}
public class ViewHolder extends RecyclerView.ViewHolder {
TextView name;
TextView dilivery;
TextView items;
TextView minorder;
TextView time;
ImageView shopimage;
public ViewHolder(#NonNull View v) {
super(v);
name = (TextView) v.findViewById(R.id.name_item);
dilivery = (TextView) v.findViewById(R.id.price_item);
minorder = (TextView) v.findViewById(R.id.minumum_order);
items=(TextView)v.findViewById(R.id.items_all);
time=(TextView)v.findViewById(R.id.shoptimming);
shopimage=(ImageView) v.findViewById(R.id.image_items);
}
}
}
In error it is saying that the Adapter for RecylerView is not attached. So, try to add adapter to the layout using:
recyclerView.setAdapter(categoryAdapter);
I am assuming homebuyer_adapter_recycler is your adapter.
According to that, you haven't really set your adapter as the logcat is specifying.
Add the below code instead of allitemsgrid.setAdapter(r);
allitemsgrid.setAdapter(homebuyer_adapter_recycler);
If my assumption or suggestion is wrong, it is okay. It is probably because your question is not very clear and does not provide the necessary details. Please provide more details such as the adapter class code and what is allitemsgrid, homebuyer_adapter_recycler and r.
I have Fragment that contain Linear layout with orientation "horizontal" (ItemViewContainer).
I'm created another layout that container imageView and textView (ItemView).
I want to add the ItemView to the ItemViewContainer programmatically a few times.
How can i do that instead of adding the ItemView with from ItemViewContainer.
ItemView
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:card_view="http://schemas.android.com/apk/res-auto"
android:id="#+id/LLTopServiceRootView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center"
android:orientation="vertical">
<androidx.cardview.widget.CardView
android:id="#+id/CVServiceIMGHolder"
android:layout_width="50dp"
android:layout_height="50dp"
android:translationZ="5dp"
card_view:cardBackgroundColor="#color/fragment_background_color"
card_view:cardCornerRadius="100dp"
card_view:elevation="5dp">
<ImageView
android:id="#+id/IVServiceIMG"
android:layout_width="30dp"
android:layout_height="30dp"
android:layout_gravity="center"
android:tint="#color/text_color"
card_view:srcCompat="#drawable/lights_icon" />
</androidx.cardview.widget.CardView>
<TextView
android:id="#+id/TVServiceName"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textColor="#color/text_color"
android:layout_gravity="center_horizontal"
android:text="Service\nName"
android:textAlignment="center" />
</LinearLayout>
ItemViewContainer
<androidx.cardview.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:card_view="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_margin="15dp"
android:orientation="vertical"
android:translationZ="5dp"
app:cardBackgroundColor="#color/fragment_background_color"
app:cardCornerRadius="5dp"
card_view:elevation="5dp">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
android:id="#+id/LLTopServiceContainer"
</LinearLayout>
</androidx.cardview.widget.CardView>
Fragment that contain layout with the ItemViewContainer:
public class HomeFragment extends Fragment {
private View view;
private TextView mTVPageTitle, mTVHomeNavigationTXT;
private LottieAnimationView mLAVHome;
private ButtonsManager bm;
private LinearLayout mLLTopServiceContainer;
private final String TAG = "HomeLifeCycle";
#Nullable
#Override
public View onCreateView(#NonNull LayoutInflater inflater, #Nullable ViewGroup container, #Nullable Bundle savedInstanceState) {
view = inflater.inflate(R.layout.fragment_home, container, false);
bm = new ButtonsManager(getContext());
initView(view);
Log.d(TAG, "onCreateView: ");
return view;
}
private void initView(View view) {
if (getActivity() != null) {
mLAVHome = getActivity().findViewById(R.id.LAVHome);
mTVPageTitle = getActivity().findViewById(R.id.TVPageTitle);
mTVHomeNavigationTXT = getActivity().findViewById(R.id.TVHome);
mLLTopServiceContainer = view.findViewById(R.id.LLTopServiceContainer);
addSelectedIconStyle();
}
}
}
I want to add the itemView 4th times
You could do it dynamically like this way : Simple Android RecyclerView example
Or adding manually:
LayoutInflater inflater = (LayoutInflater)getBaseContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
LinearLayout linearLayout= (LinearLayout) findViewById(R.id.LLTopServiceContainer);
View view = (View) inflater.inflate(R.layout.item:view_name_file, linearLayout, true);
I am trying to make a movie list, but it only shows a white screen with the app name. Apparently, I have a very similar program to this and it runs perfectly fine. This is what I get when I run the program.
W/OpenGLRenderer: Failed to choose config with EGL_SWAP_BEHAVIOR_PRESERVED, retrying without...
I found someone saying that this error happens if there is an error in xml codes, but I will still put my java codes as well.
public class MainActivity extends AppCompatActivity {
private ListView mListView;
private Context mContext;
ArrayList<Movie> movieList;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mContext = this;
final ArrayList<Movie> movieList = Movie.getMoviesFromFile("movies.json", this);
MovieAdapter adapter = new MovieAdapter(this, movieList);
mListView = findViewById(R.id.movie_list_view);
mListView.setAdapter(adapter);
mListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {
Movie selectedMovie = movieList.get(i);
Intent detailIntent = new Intent(mContext, MovieDetailActivity.class);
detailIntent.putExtra("title", selectedMovie.title);
detailIntent.putExtra("description", selectedMovie.description);
detailIntent.putExtra("poster", selectedMovie.poster);
startActivity(detailIntent);
}
});
}
The following is my adapter.
public class MovieAdapter extends BaseAdapter{
private Context mContext;
private ArrayList<Movie> mMovieList;
private LayoutInflater mInflater;
public MovieAdapter(Context mContext, ArrayList<Movie> mMovieList){
this.mContext = mContext;
this.mMovieList = mMovieList;
mInflater = (LayoutInflater)mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
#Override
public int getCount(){return mMovieList.size();}
#Override
public Object getItem(int pos){return mMovieList.get(pos);}
#Override
public long getItemId(int pos){return pos;}
#Override
public View getView(int pos, View convertView, ViewGroup parent){
ViewHolder holder;
if(convertView == null){
convertView = mInflater.inflate(R.layout.list_item_movie, parent, false);
holder = new ViewHolder();
holder.titleTextView = convertView.findViewById(R.id.title);
holder.charactersTextView = convertView.findViewById(R.id.main_characters);
holder.descriptionTextView = convertView.findViewById(R.id.description);
holder.thumbnailImageView = convertView.findViewById(R.id.poster);
convertView.setTag(holder);
} else{
holder = (ViewHolder)convertView.getTag();
}
TextView titleTextView = holder.titleTextView;
TextView descriptionTextView = holder.descriptionTextView;
TextView charactersTextView = holder.charactersTextView;
ImageView thumbnailImageView = holder.thumbnailImageView;
Movie movie = (Movie)getItem(pos);
titleTextView.setText(movie.title);
titleTextView.setTextSize(20);
charactersTextView.setText(movie.main_characters);
charactersTextView.setTextSize(13);
descriptionTextView.setText(movie.description);
descriptionTextView.setTextSize(9);
Picasso.with(mContext).load(movie.poster).into(thumbnailImageView);
return convertView;
}
private static class ViewHolder{
public TextView titleTextView;
public TextView descriptionTextView;
public ImageView thumbnailImageView;
public TextView charactersTextView;
}
}
And the followings are the xml codes.
activity_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="match_parent"
android:layout_height="match_parent"
tools:context="com.example.user.junepyolee_miniapp1.MainActivity">
<ListView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/movie_list_view" />
list_item_movie.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"
android:layout_width="match_parent"
android:layout_height="match_parent">
<ImageView
android:id="#+id/poster"
android:layout_width="90dp"
android:layout_height="140dp"
android:layout_alignParentStart="true"
android:layout_alignParentTop="true"
android:layout_marginStart="4dp"
android:layout_marginTop="6dp"
android:layout_marginBottom="6dp"
android:layout_centerVertical="true"
android:scaleType="fitCenter"
android:contentDescription="This is a thumbnail"
app:srcCompat="#mipmap/ic_launcher" />
<RelativeLayout
android:id="#+id/movie_list_text_layout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignTop="#+id/poster"
android:layout_alignParentTop="false"
android:layout_toRightOf="#+id/poster">
<TextView
android:id="#+id/title"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentStart="true"
android:layout_alignParentTop="true"
android:layout_marginLeft="10dp"
android:layout_marginRight="10dp"
android:layout_marginTop="3dp"
android:text="Title"
android:textSize="20sp" />
<TextView
android:id="#+id/description"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="#+id/title"
android:layout_marginLeft="10dp"
android:layout_marginRight="10dp"
android:layout_marginTop="3dp"
android:maxLines="3"
android:text="description"
android:textSize="9sp" />
<TextView
android:id="#+id/main_characters"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignEnd="#+id/description"
android:layout_below="#+id/description"
android:layout_marginLeft="10dp"
android:layout_marginRight="10dp"
android:layout_marginTop="3dp"
android:text="characters max 3 people"
android:textSize="13sp" />
<TextView
android:id="#+id/hasSeen"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="#+id/main_characters"
android:layout_marginLeft="10dp"
android:layout_marginRight="10dp"
android:layout_marginTop="3dp"
android:text="has seen?"
android:textSize="11sp" />
</RelativeLayout>
Does anyone have a solution for this one?
This is just a warning, and since it retries without the configuration option without (I am assuming from your comments) a followup error, this is not the source of your problem.
It's not a bad guess, since this is for an OpenGL-related class (android/opengl/EGL14), but it's not the source of your problem.
You can read more about EGL at https://www.khronos.org/egl.
My Fragment
public class PostFragment extends BaseFragment implements PostView {
#Inject
PostPresenter presenter;
private RecyclerView recyclerView;
PostAdapter adapter;
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View v = inflater.inflate(R.layout.fragment_post, container, false);
recyclerView = (RecyclerView) v.findViewById(R.id.postFragmentRecycler);
recyclerView.setLayoutManager(new LinearLayoutManager(getActivity()));
String s = "word";
ArrayList<String> array = new ArrayList<>();
for(int i = 0; i != 20; i++) {
array.add(s);
}
adapter = new PostAdapter(array);
recyclerView.setAdapter(adapter);
return v;
}
Adapter
public class PostAdapter extends RecyclerView.Adapter {
private ArrayList<String> arrayList;
public PostAdapter(ArrayList<String> arrayList) {
Log.d("ADAPTER", "constructor");
this.arrayList = arrayList;
}
class MyViewHolder extends RecyclerView.ViewHolder {
public View view;
MyViewHolder(View itemView) {
super(itemView);
this.view = itemView;
}
}
#Override
public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
Log.d("ADAPTER", "CREATE");
View view = LayoutInflater.from(parent.getContext())
.inflate(R.layout.post_item, parent, false);
return new MyViewHolder(view);
}
#Override
public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {
Log.d("ADAPTER", "bind");
}
#Override
public int getItemCount() {
Log.d("ADAPTER", "size = " + String.valueOf(arrayList.size()));
return arrayList.size();
}
}
xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="exp.glorio.view.fragments.PostFragment">
<android.support.v7.widget.RecyclerView
android:id="#+id/postFragmentRecycler"
android:layout_width="match_parent"
android:layout_height="match_parent">
</android.support.v7.widget.RecyclerView>
post_item
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.v7.widget.CardView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:padding="10dp"
android:layout_marginTop="10dp">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:visibility="visible">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="50dp"
android:layout_weight="1"
android:orientation="horizontal">
<ImageView
android:id="#+id/postGroupLogo"
android:layout_width="40dp"
android:layout_height="40dp"
android:layout_marginLeft="20dp"
android:layout_gravity="center"/>
<TextView
android:id="#+id/postGroupName"
android:layout_width="180dp"
android:layout_height="30dp"
android:textColor="#color/colorText"
android:textSize="12sp"
android:layout_marginLeft="30dp"
android:layout_gravity="center"
/>
</LinearLayout>
<TextView
android:id="#+id/postText"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1" />
<LinearLayout
android:id="#+id/postAttachmentsContainer"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
</LinearLayout>
</LinearLayout>
</android.support.v7.widget.CardView>
and log:
03-17 17:11:23.753 30538-30538/exp.glorio D/ADAPTER: constructor
03-17 17:11:23.903 30538-30538/exp.glorio D/ADAPTER: size = 20
03-17 17:11:23.903 30538-30538/exp.glorio D/ADAPTER: size = 20
03-17 17:11:23.953 30538-30538/exp.glorio D/ADAPTER: size = 20
03-17 17:11:23.953 30538-30538/exp.glorio D/ADAPTER: size = 20
I have many other adapters in this app and they work. In this case as u can see I don't forget to add LayoutManager and Recycler view not under ScrollView in xml. Constructor and getItemCount works (why 4 times ?) but onBindViewHolder and onCreateViewHolder no.
The problem was in root layout of activity. It was android.support.constraint.ConstraintLayout. In combination with parameter layout_height"match_parent" of container of fragment it's give that problem. If change ConstraintLayout to any other - it will work properly.
I need to show gridview in alert dialog. But i stuck with the error
java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.GridView.setAdapter(android.widget.ListAdapter)' on a null object reference
My code...
listView_prev.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> arg0, final View arg1, int arg2, long arg3) {
//listview click event handling
TextView id = (TextView) arg1.findViewById(R.id.textView17);
final int id_To_Search = Integer.valueOf(id.getText().toString());
Cursor item=mydb.singlecons(id_To_Search);
Cursor att=mydb.attrs(id_To_Search);
Cursor picloc=mydb.singleconspic(id_To_Search);
att.moveToFirst();
List<String> list = new ArrayList<>();
// Log.d("temp",att.getColumnName(1));
while (!att.isAfterLast())
{
int l=att.getColumnCount();
Log.d("length", String.valueOf(l));
for(int i=2;i<l;i++){
Log.d("for","for");
if(att.getString(i)!=null){
String b= att.getColumnName(i)+" "+att.getString(i);
list.add(b);
Log.d("att",b);
}
}
Log.d("while","while");
att.moveToNext();
}
att.close();
Log.d("list", String.valueOf(list));
picloc.moveToFirst();
FilePathStrings = new String[picloc.getCount()];
int i=0;
while (!picloc.isAfterLast()){
Log.d("picloc",picloc.getString(2));
FilePathStrings[i]=picloc.getString(2);
i++;
picloc.moveToNext();
}
item.moveToFirst();
AlertDialog.Builder dialogBuilder = new AlertDialog.Builder(Consultation.this);
LayoutInflater inflater = getLayoutInflater();
View dialogView = inflater.inflate(R.layout.alert_label_editor, null);
dialogBuilder.setView(dialogView);
TextView con=(TextView)dialogView.findViewById(R.id.textView29);
con.setText("Consultation on "+item.getString(4));
TextView des=(TextView)dialogView.findViewById(R.id.textView28);
des.setText(item.getString(2));
TextView pre=(TextView)dialogView.findViewById(R.id.textView31);
pre.setText(item.getString(3));
TextView fee=(TextView)dialogView.findViewById(R.id.textView32);
fee.setText(item.getString(5));
adapter1 = new GridViewAdapter(FilePathStrings,getApplicationContext());
grid.setAdapter(adapter1);
AlertDialog alertDialog = dialogBuilder.create();
alertDialog.show();
Gridviewadapter.java
class GridViewAdapter extends BaseAdapter {
private String[] filepath;
private static LayoutInflater inflater = null;
GridViewAdapter(String[] fpath,Context context) {
filepath = fpath;
inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
public int getCount() {
return filepath.length;
}
public Object getItem(int position) {
return position;
}
public long getItemId(int position) {
return position;
}
public View getView(int position, View convertView, ViewGroup parent) {
View vi = convertView;
if (convertView == null)
vi = inflater.inflate(R.layout.gridview_item, null);
ImageView image = (ImageView) vi.findViewById(R.id.image);
Bitmap bmp = BitmapFactory.decodeFile(filepath[position]);
image.setImageBitmap(bmp);
return vi;
}
}
Alertlabeleditor.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingLeft="20dp"
android:paddingRight="20dp"
android:paddingTop="10dp"
android:paddingBottom="20dp">
<LinearLayout
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<LinearLayout
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<TextView
android:text="TextView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/textView29"
android:layout_weight="1"
android:gravity="center"
android:textSize="24sp"
android:layout_marginBottom="10dp"
android:textStyle="normal|bold" />
</LinearLayout>
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical" >
<LinearLayout
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:text="Description"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/textView27"
android:layout_weight="2" />
<TextView
android:text="TextView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/textView28"
android:layout_weight="1" />
</LinearLayout>
<LinearLayout
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:text="Prescription"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/textView30"
android:layout_weight="2" />
<TextView
android:text="TextView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/textView31"
android:layout_weight="1" />
</LinearLayout>
<LinearLayout
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:text="fee"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/textView33"
android:layout_weight="2" />
<TextView
android:text="TextView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/textView32"
android:layout_weight="1" />
</LinearLayout>
</LinearLayout>
</ScrollView>
<GridView
android:id="#+id/gridview"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:columnWidth="90dp"
android:numColumns="auto_fit"
android:stretchMode="columnWidth" />
</LinearLayout>
How can i resolve this issue.? Where is the error occurring in my code? I know null pointer error due to accessing values from where there is no value, but i cant figure it out where this is occurring and how can i resolve it. How can i solve this issue.?
Your GridView reference is null
make sure you have initialized your GridView reference
example
grid = (GridView) dialogView.findViewById(R.id.gridview);
Replace your onclickListner with this
listView_prev.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> arg0, final View arg1, int arg2, long arg3) {
//listview click event handling
TextView id = (TextView) arg1.findViewById(R.id.textView17);
final int id_To_Search = Integer.valueOf(id.getText().toString());
Cursor item=mydb.singlecons(id_To_Search);
Cursor att=mydb.attrs(id_To_Search);
Cursor picloc=mydb.singleconspic(id_To_Search);
att.moveToFirst();
List<String> list = new ArrayList<>();
// Log.d("temp",att.getColumnName(1));
while (!att.isAfterLast())
{
int l=att.getColumnCount();
Log.d("length", String.valueOf(l));
for(int i=2;i<l;i++){
Log.d("for","for");
if(att.getString(i)!=null){
String b= att.getColumnName(i)+" "+att.getString(i);
list.add(b);
Log.d("att",b);
}
}
Log.d("while","while");
att.moveToNext();
}
att.close();
Log.d("list", String.valueOf(list));
picloc.moveToFirst();
FilePathStrings = new String[picloc.getCount()];
int i=0;
while (!picloc.isAfterLast()){
Log.d("picloc",picloc.getString(2));
FilePathStrings[i]=picloc.getString(2);
i++;
picloc.moveToNext();
}
item.moveToFirst();
AlertDialog.Builder dialogBuilder = new AlertDialog.Builder(Consultation.this);
LayoutInflater inflater = getLayoutInflater();
View dialogView = inflater.inflate(R.layout.alert_label_editor, null);
dialogBuilder.setView(dialogView);
TextView con=(TextView)dialogView.findViewById(R.id.textView29);
con.setText("Consultation on "+item.getString(4));
TextView des=(TextView)dialogView.findViewById(R.id.textView28);
des.setText(item.getString(2));
TextView pre=(TextView)dialogView.findViewById(R.id.textView31);
pre.setText(item.getString(3));
TextView fee=(TextView)dialogView.findViewById(R.id.textView32);
fee.setText(item.getString(5));
adapter1 = new GridViewAdapter(FilePathStrings,getApplicationContext());
grid = (GridView) dialogView.findViewById(R.id.gridview);
grid.setAdapter(adapter1);
AlertDialog alertDialog = dialogBuilder.create();
alertDialog.show();