我正在我的android应用中显示横幅广告。我遵循了官方文档来实施admob横幅contentView广告，并成功加载了广告，但现在我的recyclerview像地狱一样滞后了。如果我从代码中删除广告，滚动会变得很顺畅。请帮助我解决这个问题。
这是我的片段类
public class WallpaperFragment extends Fragment {
private RecyclerView recyclerView;
private DatabaseReference wallRef;
private String category;
private FirebaseAuth mAuth;
private final String CATEGORY = "Category";
private Context context;
private ArrayList<Object> modelList = new ArrayList<>();
private GridLayoutManager manager;
// The number of native ads to load and display.
public int NUMBER_OF_ADS = 5;
// List of native ads that have been successfully loaded.
private List<NativeAd> mNativeAds = new ArrayList<>();
private WallpaperAdapter adapter;
@Nullable
@Override
public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fg_wallpaper, container, false);
category = "Recent";
init(view);
Util.showDialog(context, "Loading wallpapers...");
manager.setSpanSizeLookup(new GridLayoutManager.SpanSizeLookup() {
@Override
public int getSpanSize(int position) {
return (position % (SPACE_BETWEEN_ADS + 1) == SPACE_BETWEEN_ADS) ? 2 : 1;
}
});
setScrollListener();
initializeFirebaseDatabase();
return view;
}
private void init(View view) {
context = getContext();
MobileAds.initialize(context, getString(R.string.admob_app_id));
wallRef = FirebaseDatabase.getInstance().getReference().child(WALL).child(CATEGORY).child(category).getRef();
mAuth = FirebaseAuth.getInstance();
recyclerView = view.findViewById(R.id.recyclerView);
manager = new GridLayoutManager(context, 2, GridLayoutManager.VERTICAL, false);
recyclerView.setLayoutManager(manager);
recyclerView.addItemDecoration(new GridItemDecor(0));
recyclerView.setHasFixedSize(true);
recyclerView.setItemAnimator(null);
}
private void setScrollListener() {
recyclerView.addOnScrollListener(new HidingScrollListener() {
@Override
public void onHide() {
if (context instanceof ToolbarShowHideListener) {
((ToolbarShowHideListener) context).hideBottomNavigation();
}
}
@Override
public void onShow() {
if (context instanceof ToolbarShowHideListener) {
((ToolbarShowHideListener) context).showBottomNavigation();
}
}
});
}
private void initializeFirebaseDatabase() {
mNativeAds.clear();
wallRef.addValueEventListener(new ValueEventListener() {
@Override
public void onDataChange(@NonNull DataSnapshot dataSnapshot) {
modelList.clear();
for (DataSnapshot childDataSnapshot : dataSnapshot.getChildren()) {
WallpaperModel model = childDataSnapshot.getValue(WallpaperModel.class);
modelList.add(model);
}
NUMBER_OF_ADS = modelList.size() / 2;
loadNativeAd();
}
@Override
public void onCancelled(@NonNull DatabaseError databaseError) {
}
});
}
private void loadNativeAd() {
loadNativeAd(0);
}
private void insertAdsInMenuItems() {
if (mNativeAds.size() <= 0) {
return;
}
int offset = (modelList.size() / mNativeAds.size()) + 1;
int index = 2;
for (NativeAd ad : mNativeAds) {
modelList.add(index, ad);
index = index + offset;
}
if (adapter == null) {
adapter = new WallpaperAdapter(context, modelList, Objects.requireNonNull(mAuth.getCurrentUser()).getUid(), true, WALLPAPER_FRAGMENT);
recyclerView.setAdapter(adapter);
} else {
adapter.updateList(modelList);
}
}
private void loadNativeAd(final int adLoadCount) {
if (adLoadCount >= NUMBER_OF_ADS) {
insertAdsInMenuItems();
return;
}
AdLoader.Builder builder = new AdLoader.Builder(context, /*getString(R.string.ad_unit_id)*/"ca-app-pub-3940256099942544/2247696110");
AdLoader adLoader = builder.forContentAd(new NativeContentAd.OnContentAdLoadedListener() {
@Override
public void onContentAdLoaded(NativeContentAd ad) {
// A content ad loaded successfully, call this method again to
// load the next ad in the items list.
mNativeAds.add(ad);
loadNativeAd(adLoadCount + 1);
}
}).withAdListener(new AdListener() {
@Override
public void onAdFailedToLoad(int errorCode) {
// A native ad failed to load. Call this method again to load
// the next ad in the items list.
Log.e("MainActivity", "The previous native ad failed to load. Attempting to" +
" load another.");
loadNativeAd(adLoadCount + 1);
}
}).build();
// Load the Native Express ad.
adLoader.loadAd(new AdRequest.Builder().addTestDevice("9F50A23B86C21B90330202FAECE3C331").build());
}
}
这是我的适配器类，
public class WallpaperAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {
private Context context;
private int height, fragment_id;
private String uId;
private Animation fadeout, fadein;
private DatabaseReference favCheckRef;
private final String CATEGORY = "Category";
private ArrayList<Object> modelList;
private boolean showLikeBtn;
public WallpaperAdapter(Context context, ArrayList<Object> modelList, String uId, boolean showLikeBtn, int fragment_id) {
this.context = context;
this.modelList = modelList;
this.uId = uId;
this.showLikeBtn = showLikeBtn;
height = context.getResources().getDisplayMetrics().heightPixels;
fadeout = AnimationUtils.loadAnimation(context, R.anim.anim_fade_out);
fadein = AnimationUtils.loadAnimation(context, R.anim.anim_fade_in);
favCheckRef = FirebaseDatabase.getInstance().getReference().child(WALL).child(USER)
.child(uId).child(FAVOURITES).getRef();
this.fragment_id = fragment_id;
}
@NonNull
@Override
public RecyclerView.ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
switch (viewType) {
case NATIVE_CONTENT_AD_VIEW_TYPE:
View nativeContentLayoutView = LayoutInflater.from(
parent.getContext()).inflate(R.layout.ad_content,
parent, false);
return new NativeContentAdViewHolder(nativeContentLayoutView);
case MENU_ITEM_VIEW_TYPE:
// Fall through.
default:
View dataView = LayoutInflater.from(context).inflate(R.layout.single_wallpaper_unit, parent, false);
return new ViewHolder(dataView);
}
}
@Override
public void onBindViewHolder(@NonNull RecyclerView.ViewHolder holder, int position) {
int viewType = getItemViewType(position);
Util.dismissDialog();
switch (viewType) {
case NATIVE_CONTENT_AD_VIEW_TYPE:
NativeContentAd contentAd = (NativeContentAd) modelList.get(position);
populateAdView(contentAd, (NativeContentAdView) holder.itemView);
break;
case MENU_ITEM_VIEW_TYPE:
// fall through
default:
final ViewHolder wallHolder = (ViewHolder) holder;
WallpaperModel model = (WallpaperModel) modelList.get(position);
wallHolder.wallpaper.getLayoutParams().height = (int) (height / 2.5);
wallHolder.name.setText(model.getName());
favCheck(wallHolder, model);
Glide.with(wallHolder.wallpaper.getContext())
.load(model.getThumbnail())
.into(wallHolder.wallpaper);
break;
}
}
@Override
public int getItemViewType(int position) {
Object recyclerViewItem = modelList.get(position);
if (recyclerViewItem instanceof NativeContentAd) {
return NATIVE_CONTENT_AD_VIEW_TYPE;
}
return MENU_ITEM_VIEW_TYPE;
}
@Override
public int getItemCount() {
return modelList.size();
}
private void populateAdView(NativeContentAd ad,NativeContentAdView adView){
((TextView) adView.getHeadlineView()).setText(ad.getHeadline());
List<NativeAd.Image> images = ad.getImages();
if (images.size() > 0) {
((ImageView) adView.getImageView()).setImageDrawable(images.get(0).getDrawable());
}
adView.setNativeAd(ad);
}
public class ViewHolder extends RecyclerView.ViewHolder {
TextView name;
ImageView wallpaper, favouriteIcon;
private ViewHolder(View itemView) {
super(itemView);
wallpaper = itemView.findViewById(R.id.wallpaper);
name = itemView.findViewById(R.id.name);
favouriteIcon = itemView.findViewById(R.id.favouriteIcon);
}
}
public class NativeContentAdViewHolder extends RecyclerView.ViewHolder {
NativeContentAdViewHolder(View view) {
super(view);
NativeContentAdView adView = (NativeContentAdView) view;
adView.setHeadlineView(adView.findViewById(R.id.contentad_headline));
adView.setImageView(adView.findViewById(R.id.contentad_image));
}
}
}
答案 0 :(得分：1)
您正在加载本地快递，而不是横幅。
问题在于广告具有图像，就像普通的查看器一样，您必须处理图像的缓存，我发现您已经在使用滑行...
此外，显示广告ID也不是一个好主意。
最后一点，NONE很重要，因为不赞成使用原生快递广告，并且无论如何都无法正常工作。
另一种选择是使用Native Ads Advance，但是除非下载量达到几百万，否则您将无法使用它-look here：
Note: Native Ads Advanced is currently released to a limited set of publishers. If you're interested in participating, reach out to your account manager to discuss the possibility.
我建议使用支持本地广告的Appodeal之类的广告提供商。