#java #android #android-recyclerview
#java #Android #android-recyclerview
Вопрос:
Я хочу создать свое приложение с двумя элементами (Post и Ad) в одном и том же RecyclerView .
Но мой элемент будет заменен другим элементом, а не вставлен.
Как я могу это исправить!
Я хочу правую сторону, но теперь мой код — это левая сторона, и он будет разбит! 
Вот мой адаптер:
public class PostCardImageAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {
public static final int Post_Layout = 0;
public static final int AD_Layout = 1;
private Context mContext;
private ArrayList<PostCard> mData;
private int mAdCount;
public static NativeAd nativeAd = HomePageActivity.nativeAd;
public PostCardImageAdapter(Context context, ArrayList<PostCard> data) {
this.mContext = context;
this.mData = data;
}
public int getmAdCount(){
mAdCount = mData.size() / 2;
return mAdCount;
}
@Override
public int getItemViewType(int position) {
/*if(mAdCount != 0 amp;amp; position >= dataItemCount){
return AD_Layout;
}
else{
return Post_Layout;
}*/
if(position!=0 amp;amp; (position % 2 == 0)){
return AD_Layout;
}
else{
return Post_Layout;
}
}
public static class PostViewHolder extends RecyclerView.ViewHolder {
private ImageView postcard_userIcon;
private TextView postcard_name;
private TextView postcard_time;
private TextView postcard_postText;
private ImageView postcard_postPic;
private TextView postcard_likes;
private TextView postcard_comments;
public PostViewHolder(View postView) {
super(postView);
postcard_userIcon = (ImageView) postView.findViewById(R.id.postcard_userIcon);
postcard_name = (TextView) postView.findViewById(R.id.postcard_name);
postcard_time = (TextView) postView.findViewById(R.id.postcard_time);
postcard_postText = (TextView) postView.findViewById(R.id.postcard_postText);
postcard_postPic = (ImageView) postView.findViewById(R.id.postcard_postPic);
postcard_likes = (TextView) postView.findViewById(R.id.postcard_likes);
postcard_comments = (TextView) postView.findViewById(R.id.postcard_comments);
}
}
public static class AdViewHolder extends RecyclerView.ViewHolder {
NativeAdLayout nativeAdContainer;
TextView nativeAdTitle;
TextView sponsoredLabel;
TextView nativeAdBody;
TextView nativeAdSocialContext;
AdIconView nativeAdIcon;
MediaView nativeAdMedia;
Button nativeAdCallToAction;
//LinearLayout adChoicesContainer;
public AdViewHolder(View adView) {
super(adView);
nativeAdContainer = adView.findViewById(R.id.native_ad_container);
nativeAdTitle = adView.findViewById(R.id.native_ad_title);
sponsoredLabel = adView.findViewById(R.id.native_ad_sponsored_label);
nativeAdBody = adView.findViewById(R.id.native_ad_body);
nativeAdSocialContext = adView.findViewById(R.id.native_ad_social_context);
nativeAdIcon = adView.findViewById(R.id.native_ad_icon);
nativeAdMedia = adView.findViewById(R.id.native_ad_media);
nativeAdCallToAction = adView.findViewById(R.id.native_ad_call_to_action);
/*adChoicesContainer = adView.findViewById(R.id.ad_choices_container);
AdOptionsView adOptionsView = new AdOptionsView(mLayoutInflater.this, nativeAd, nativeAdContainer);
adChoicesContainer.removeAllViews();
adChoicesContainer.addView(adOptionsView, 0);*/
}
}
@Override
public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
if(viewType == Post_Layout){
View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.postcard_layout, parent, false);
return new PostViewHolder(v);
}
else {
View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.native_ad_layout, parent, false);
return new AdViewHolder(v);
}
}
@Override
public void onBindViewHolder(final RecyclerView.ViewHolder holder, int position) {
if(holder instanceof PostViewHolder){
PostCard post = mData.get(position);
((PostViewHolder) holder).postcard_name.setText(post.name);
((PostViewHolder) holder).postcard_time.setText(post.time);
((PostViewHolder) holder).postcard_postText.setText(post.postText);
((PostViewHolder) holder).postcard_likes.setText(post.likes);
((PostViewHolder) holder).postcard_comments.setText(post.comments);
Glide.with(mContext)
.load(post.userIconUrl)
.into(((PostViewHolder) holder).postcard_userIcon);
Glide.with(mContext)
.load(post.postPicUrl)
.into(((PostViewHolder) holder).postcard_postPic);
}
else if(holder instanceof AdViewHolder){
AdViewHolder adViewHolder = (AdViewHolder) holder;
View adView = NativeAdView.render(mContext, nativeAd);
adViewHolder.nativeAdTitle.setText(nativeAd.getAdvertiserName());
adViewHolder.sponsoredLabel.setText(nativeAd.getSponsoredTranslation());
adViewHolder.nativeAdBody.setText(nativeAd.getAdBodyText());
adViewHolder.nativeAdSocialContext.setText(nativeAd.getAdSocialContext());
adViewHolder.nativeAdCallToAction.setVisibility(nativeAd.hasCallToAction() ? View.VISIBLE : View.INVISIBLE);
adViewHolder.nativeAdCallToAction.setText(nativeAd.getAdCallToAction());
List<View> clickableViews = new ArrayList<>();
clickableViews.add(adViewHolder.nativeAdTitle);
clickableViews.add(adViewHolder.nativeAdCallToAction);
nativeAd.registerViewForInteraction(
adView,
adViewHolder.nativeAdMedia,
adViewHolder.nativeAdIcon,
clickableViews);
}
}
@Override
public int getItemCount() {
return mData.size() getmAdCount();
}
}
Вот журнал:
E/AndroidRuntime: FATAL EXCEPTION: main
Process: playground.com.pgapp, PID: 29719
java.lang.IndexOutOfBoundsException: Index: 5, Size: 5
at java.util.ArrayList.get(ArrayList.java:411)
at playground.com.pgapp.PostCardImageAdapter.onBindViewHolder(PostCardImageAdapter.java:156)
at android.support.v7.widget.RecyclerView$Adapter.onBindViewHolder(RecyclerView.java:6781)
at android.support.v7.widget.RecyclerView$Adapter.bindViewHolder(RecyclerView.java:6823)
at android.support.v7.widget.RecyclerView$Recycler.tryBindViewHolderByDeadline(RecyclerView.java:5752)
at android.support.v7.widget.RecyclerView$Recycler.tryGetViewHolderForPositionByDeadline(RecyclerView.java:6019)
at android.support.v7.widget.GapWorker.prefetchPositionWithDeadline(GapWorker.java:286)
at android.support.v7.widget.GapWorker.flushTaskWithDeadline(GapWorker.java:343)
at android.support.v7.widget.GapWorker.flushTasksWithDeadline(GapWorker.java:359)
at android.support.v7.widget.GapWorker.prefetch(GapWorker.java:366)
at android.support.v7.widget.GapWorker.run(GapWorker.java:397)
at android.os.Handler.handleCallback(Handler.java:751)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:241)
at android.app.ActivityThread.main(ActivityThread.java:6274)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:886)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:776)
Комментарии:
1. Можно попробовать удалить, если еще, если просто использовать только if else.
2. Кажется, что у вас
mDataнет данных Ad, ноgetItemCount()возвращается адаптерmData.size() getmAdCount(). когда позиция шансов большеmDataразмера, тип представления будетPost_Layout, но для этой позиции нет индексаmData. итак, приложение разбилось!3. @AmitPrajapati Я пробую, у него все та же проблема.
4. @Choim Как я могу добавить индекс mData?
5. У @Yunting make
mDataтоже есть данные Ad. ИлиonBindViewHolder(), когда ViewHolderPostViewHolder, используя index likeposition - position/2.position/2означает количество объявлений перед текущей позицией.
Ответ №1:
public void onBindViewHolder(final RecyclerView.ViewHolder holder, int position) {
if(holder instanceof PostViewHolder){
int index = position - position / 2;
PostCard post = mData.get(index);
((PostViewHolder) holder).postcard_name.setText(post.name);
((PostViewHolder) holder).postcard_time.setText(post.time);
((PostViewHolder) holder).postcard_postText.setText(post.postText);
((PostViewHolder) holder).postcard_likes.setText(post.likes);
((PostViewHolder) holder).postcard_comments.setText(post.comments);
Glide.with(mContext)
.load(post.userIconUrl)
.into(((PostViewHolder) holder).postcard_userIcon);
Glide.with(mContext)
.load(post.postPicUrl)
.into(((PostViewHolder) holder).postcard_postPic);
}
...
}