问题
I am trying to add Native ads in my recyclerView. For that I am following this tutorial. But looks like my RecyclerViewAdapter is a little bit different than what they have with them.
package com.comp.app.adapters;
public class RecyclerViewAdapter extends
RecyclerView.Adapter<RecyclerViewAdapter.RecyclerViewHolder> {
private Context context;
private Constants constants;
private String androidId;
private String id;
private ArrayList<CardSetterGetter> arrayList = new ArrayList<CardSetterGetter>();
private ArrayList<String> favouriteItemList = new ArrayList<String>();
private int totalCount;
private static final int MENU_ITEM_VIEW_TYPE = 0 ;
private static final int AD_VIEW_TYPE = 1;
public RecyclerViewAdapter(Context context, ArrayList<CardSetterGetter> arrayList, ArrayList<String> favouriteItemList, int totalCount) {
this.arrayList = arrayList;
this.context = context;
this.arrayList = arrayList;
this.favouriteItemList = favouriteItemList;
this.totalCount = totalCount;
}
@Override
public long getItemId(int position) {
setHasStableIds(true);
return super.getItemId(position);
}
@Override
public RecyclerViewAdapter.RecyclerViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
switch (viewType){
case AD_VIEW_TYPE:
View nativeExpressLayoutView = LayoutInflater.from(parent.getContext())
.inflate(R.layout.native_express_ad_container, parent, false);
return new NativeExpressAdViewHolder(nativeExpressLayoutView); // Incompatible types. Required: com.comp.app.adapters.RecyclerViewAdapter.RecyclerViewHolder Found: com.comp.app.adapters.RecyclerViewAdapter.NativeExpressAdViewHolder
case MENU_ITEM_VIEW_TYPE:
default:
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.cards, parent, false);
return new RecyclerViewHolder(view);
}
}
@Override
public void onBindViewHolder(final RecyclerViewHolder holder, final int position) {
int viewType = getItemViewType(position);
switch (viewType){
case AD_VIEW_TYPE:
NativeExpressAdViewHolder nativeExpressHolder = (NativeExpressAdViewHolder)holder; //Inconvertible types; cannot case 'com.comp.app.adapters.RecyclerViewAdapter.RecyclerViewHolder' to 'com.comp.app.adapters.RecyclerViewAdapter.NativeExpressAdViewHolder'
NativeExpressAdView adView = (NativeExpressAdView)holder.getPosition(); //Inconvertible types; cannot cast 'int' to 'com.google.android.gms.ads.NativeExpressAdView
ViewGroup adCardView = (ViewGroup)nativeExpressHolder.itemView;
adCardView.removeAllViews();
if(adView.getParent() != null){
((ViewGroup)adView.getParent()).removeView(adView);
}
adCardView.addView(adView);
break;
case MENU_ITEM_VIEW_TYPE:
default:
String card_image;
CardSetterGetter cardSetterGetter;
cardSetterGetter = arrayList.get(position);
card_image = constants.SERVERIP.concat(cardSetterGetter.getImageurl());
holder.cardSetterGetter = cardSetterGetter;
holder.title.setText(cardSetterGetter.getImagetitle()); //set title
cardSetterGetter.getTag();
PointF focusPoint = new PointF(0.5f, 0f);
// your app populates the focus point
holder.image // set image
.getHierarchy()
.setActualImageFocusPoint(focusPoint);
holder.image.setImageURI(Uri.parse(card_image));
if (cardSetterGetter.getFavourite().equals("yes")) {
holder.favourite_button.setImageResource(R.drawable.ic_bookmark_black_36dp);
} else {
holder.favourite_button.setImageResource(R.drawable.ic_bookmark_border_black_36dp);
}
}
}
public class NativeExpressAdViewHolder extends RecyclerView.ViewHolder{
NativeExpressAdViewHolder(View view){
super(view);
}
}
@Override
public int getItemViewType(int position){
return (position % 8 == 0)? AD_VIEW_TYPE: MENU_ITEM_VIEW_TYPE;
}
@Override
public int getItemCount() {
return arrayList.size();
}
public class RecyclerViewHolder extends RecyclerView.ViewHolder {
TextView title;
RelativeLayout relativeLayout;
RelativeLayout cardDescription;
SimpleDraweeView image;
//ImageView image;
ImageView favourite_button;
CardSetterGetter cardSetterGetter;
ImageView share;
private RecyclerViewHolder(View itemView) {
super(itemView);
title = (TextView) itemView.findViewById(R.id.image_title);
relativeLayout = (RelativeLayout) itemView.findViewById(R.id.activity_dash_board);
cardDescription = (RelativeLayout) itemView.findViewById(R.id.card_details);
image = (SimpleDraweeView) itemView.findViewById(R.id.image);
favourite_button = (ImageView) itemView.findViewById(R.id.favourite_button);
share = (ImageView) itemView.findViewById(R.id.share);
image.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Activity activity = (Activity) context;
saveInfo(constants.SERVERIP.concat(cardSetterGetter.getImageurl()), cardSetterGetter.getImageId(), cardSetterGetter.getDescription(), cardSetterGetter.getImagetitle(), cardSetterGetter.getFavourite());
Intent i = new Intent().setClass(context, DetailsImageviewActivity.class);
i.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_MULTIPLE_TASK);
context.startActivity(i);
activity.overridePendingTransition(R.anim.pull_from_right, R.anim.pull_out_to_right);
}
});
favourite_button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
favouriteItemList.add(title.getText().toString());
if (cardSetterGetter.getFavourite().equals("yes")) {
id = cardSetterGetter.getImageId();
System.out.println("imageid" + id);
getData();
requestWithSomeHttpHeaders1();
System.out.println("header1");
favourite_button.setImageResource(R.drawable.ic_bookmark_border_black_36dp);
cardSetterGetter.setFavorite("no");
Toast.makeText(context, "Bookmark Removed", Toast.LENGTH_SHORT).show();
} else {
id = cardSetterGetter.getImageId();
System.out.println("imageid" + id);
getData();
System.out.println("header2");
requestWithSomeHttpHeaders2();
favourite_button.setImageResource(R.drawable.ic_bookmark_black_36dp);
cardSetterGetter.setFavorite("yes");
Toast.makeText(context, "Bookmark Added", Toast.LENGTH_SHORT).show();
}
}
});
share.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
String shareBody = constants.SERVERIP.concat(cardSetterGetter.getImageurl());
Intent sharingIntent = new Intent(android.content.Intent.ACTION_SEND);
sharingIntent.setType("text/plain");
sharingIntent.putExtra(android.content.Intent.EXTRA_SUBJECT, "hey, check out this infographic/fact on app.");
sharingIntent.putExtra(android.content.Intent.EXTRA_TEXT, shareBody);
context.startActivity(Intent.createChooser(sharingIntent, "Share Image Using"));
}
});
}
}
private void getData() {
try {
SharedPreferences sharedPref = context.getSharedPreferences("mobileId", Context.MODE_PRIVATE);
androidId = sharedPref.getString("mobileId", "");
} catch (Exception e) {
}
}
private void requestWithSomeHttpHeaders2() {
RequestQueue queue = Volley.newRequestQueue(context);
StringRequest postRequest = new StringRequest(Request.Method.POST, "My URL",
new Response.Listener<String>() {
@Override
public void onResponse(String response) {
System.out.println(response);
}
},
new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
// TODO Auto-generated method stub
Log.d("ERROR", "error => " + error.toString());
NetworkResponse networkResponse = error.networkResponse;
if (networkResponse != null) {
Log.e("Volley", "Error. HTTP Status Code:" + networkResponse.statusCode);
}
if (error instanceof TimeoutError) {
Log.e("Volley", "TimeoutError");
} else if (error instanceof NoConnectionError) {
Log.e("Volley", "NoConnectionError");
} else if (error instanceof AuthFailureError) {
Log.e("Volley", "AuthFailureError");
} else if (error instanceof ServerError) {
Log.e("Volley", "ServerError");
} else if (error instanceof NetworkError) {
Log.e("Volley", "NetworkError");
} else if (error instanceof ParseError) {
Log.e("Volley", "ParseError");
}
}
}
)
{
@Override
protected Map<String, String> getParams() throws AuthFailureError {
// return super.getParams();
Map<String, String> params = new HashMap<String, String>();
params.put("device_id", androidId);
params.put("image_id", id);
params.put("favourite", "yes");
return params;
}
};
queue.add(postRequest);
}
private void requestWithSomeHttpHeaders1() {
RequestQueue queue = Volley.newRequestQueue(context);
StringRequest postRequest = new StringRequest(Request.Method.POST, "My URL",
new Response.Listener<String>() {
@Override
public void onResponse(String response) {
System.out.println(response);
}
},
new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
// TODO Auto-generated method stub
Log.d("ERROR", "error => " + error.toString());
NetworkResponse networkResponse = error.networkResponse;
if (networkResponse != null) {
Log.e("Volley", "Error. HTTP Status Code:" + networkResponse.statusCode);
}
if (error instanceof TimeoutError) {
Log.e("Volley", "TimeoutError");
} else if (error instanceof NoConnectionError) {
Log.e("Volley", "NoConnectionError");
} else if (error instanceof AuthFailureError) {
Log.e("Volley", "AuthFailureError");
} else if (error instanceof ServerError) {
Log.e("Volley", "ServerError");
} else if (error instanceof NetworkError) {
Log.e("Volley", "NetworkError");
} else if (error instanceof ParseError) {
Log.e("Volley", "ParseError");
}
}
}
)
{
@Override
protected Map<String, String> getParams() throws AuthFailureError {
Map<String, String> params = new HashMap<String, String>();
params.put("device_id", androidId);
params.put("image_id", id);
params.put("favourite", "no");
return params;
}
};
queue.add(postRequest);
}
private void saveInfo(String imageUrl, String imageId, String imageDescription, String imageTitle, String favourite) {
SharedPreferences sharedPref = context.getSharedPreferences("ImageInfo", Context.MODE_PRIVATE);
SharedPreferences.Editor editor = sharedPref.edit();
editor.putString("imageUrl", imageUrl);
editor.putString("imageId", imageId);
editor.putString("imageDescription", imageDescription);
editor.putString("imageTitle", imageTitle);
editor.putString("favourite", favourite);
editor.apply();
}
}
This is the code in my Activity
private List listItems;
private void addNativeExpressAds(){
for (int i = 0; i<listItems.size(); i += 5){
NativeExpressAdView adView = new NativeExpressAdView(this);
adView.setAdSize(new AdSize(320,150));
adView.setAdUnitId("My adUnitId");
adView.loadAd(new AdRequest.Builder().build());
listItems.add(i,adView); //wrong 2nd argument type, 'com.google.android.gms.ads.NativeExpressAdView', required:'app.appname.CardSetterGetter'
}
}
来源：https://stackoverflow.com/questions/46140421/error-incompatible-types-while-adding-nativeads-in-recyclerview