如何在recyclerview中限制原生广告的数量我只希望在recyclerview的前100行中每5行投放5个原生广告（每20行）。我的recyclerview有10000行。每20行广告输出就会使用户烦恼。因此，我想将广告数量限制为5。我做了很多更改，但没有。预先感谢您的帮助
我的活动中与广告有关的部分
public static final int ITEMS_PER_AD = 20;
private static final int NATIVE_EXPRESS_AD_HEIGHT = 100;
private void addNativeExpressAds() {
// Loop through the items array and place a new Native Express ad in every ith position in
// the items List.
for (int i = 0; i <= mRecyclerViewItems.size(); i += ITEMS_PER_AD) {
final NativeExpressAdView adView = new NativeExpressAdView(getActivity());
mRecyclerViewItems.add(i, adView);
}
}
private void setUpAndLoadNativeExpressAds() {
mRecyclerView.post(new Runnable() {
@Override
public void run() {
try {
for (int i = 0; i <= mRecyclerViewItems.size(); i += ITEMS_PER_AD) {
final NativeExpressAdView adView = (NativeExpressAdView) mRecyclerViewItems.get(i);
AdSize adSize = new AdSize(AdSize.FULL_WIDTH, NATIVE_EXPRESS_AD_HEIGHT);
adView.setAdSize(adSize);
adView.setAdUnitId(AD_UNIT_ID);
}
loadNativeExpressAd(0);
}catch (Exception e){
}
}
});
}
private void loadNativeExpressAd(final int index) {
// if (index >= mRecyclerViewItems.size()) {
// return;
// }
if (index >= mRecyclerViewItems.size()) {
return;
}
Object item = mRecyclerViewItems.get(index);
if (!(item instanceof NativeExpressAdView)) {
throw new ClassCastException("Expected item at index " + index + " to be a Native"
+ " Express ad.");
}
final NativeExpressAdView adView = (NativeExpressAdView) item;
// Set an AdListener on the NativeExpressAdView to wait for the previous Native Express ad
// to finish loading before loading the next ad in the items list.
adView.setAdListener(new AdListener() {
@Override
public void onAdLoaded() {
super.onAdLoaded();
// The previous Native Express ad loaded successfully, call this method again to
// load the next ad in the items list.
if (index<24){
loadNativeExpressAd(index + ITEMS_PER_AD);
}
}
@Override
public void onAdFailedToLoad(int errorCode) {
// The previous Native Express ad failed to load. Call this method again to load
// the next ad in the items list.
Log.e("MainActivity", "The previous Native Express ad failed to load. Attempting to"
+ " load the next Native Express ad in the items list.");
//loadNativeExpressAd(index + ITEMS_PER_AD);
}
});
try {
adView.loadAd(new AdRequest.Builder().build());
}catch (Exception e){}
}
和我的RecyclerViewAdapter.java
class RecyclerViewAdapter extends FastScrollRecyclerView.Adapter<RecyclerView.ViewHolder> {
private static final int MENU_ITEM_VIEW_TYPE = 0;
private static final int NATIVE_EXPRESS_AD_VIEW_TYPE = 1;
private final Context mContext;
private final List<Object> mRecyclerViewItems;
ItemClickListener listener;
public RecyclerViewAdapter(Context context, List<Object> recyclerViewItems, ItemClickListener listener) {
this.mContext = context;
this.mRecyclerViewItems = recyclerViewItems;
this.listener=listener;
}
public class MenuItemViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
private TextView menuItemName;
private TextView menuItemDescription;
private TextView menuItemPrice;
private TextView menuItemCategory;
private ImageView menuItemImage;
ItemClickListener itemClickListener;
MenuItemViewHolder(View view) {
super(view);
menuItemImage = (ImageView) view.findViewById(R.id.cinsiyetresmi);
menuItemName = (TextView) view.findViewById(R.id.menu_item_name);
menuItemPrice = (TextView) view.findViewById(R.id.menu_item_price);
menuItemCategory = (TextView) view.findViewById(R.id.menu_item_category);
menuItemDescription = (TextView) view.findViewById(R.id.menu_item_description);
view.setOnClickListener(this);
}
@Override
public void onClick(View v) {
this.itemClickListener.onItemClick(v,getLayoutPosition());
}
public void setItemClickListener(ItemClickListener ic)
{
this.itemClickListener=ic;
}
}
public class NativeExpressAdViewHolder extends RecyclerView.ViewHolder {
NativeExpressAdViewHolder(View view) {
super(view);
}
}
@Override
public int getItemCount() {
return mRecyclerViewItems.size();
}
@Override
public int getItemViewType(int position) {
return (position % isimler_erkek.ITEMS_PER_AD == 0) ? NATIVE_EXPRESS_AD_VIEW_TYPE
: MENU_ITEM_VIEW_TYPE;
}
@Override
public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup viewGroup, int viewType) {
switch (viewType) {
case MENU_ITEM_VIEW_TYPE:
View menuItemLayoutView = LayoutInflater.from(viewGroup.getContext()).inflate(
R.layout.menu_item_container, viewGroup, false);
return new MenuItemViewHolder(menuItemLayoutView);
case NATIVE_EXPRESS_AD_VIEW_TYPE:
// fall through
default:
View nativeExpressLayoutView = LayoutInflater.from(
viewGroup.getContext()).inflate(R.layout.native_express_ad_container,
viewGroup, false);
return new NativeExpressAdViewHolder(nativeExpressLayoutView);
}
}
@Override
public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {
int viewType = getItemViewType(position);
MenuItem menuItem;
MenuItemViewHolder menuItemHolder;
switch (viewType) {
case MENU_ITEM_VIEW_TYPE:
menuItemHolder = (MenuItemViewHolder) holder;
menuItem = (MenuItem) mRecyclerViewItems.get(position);
// Get the menu item image resource ID.
String imageName = menuItem.getImageName();
int imageResID = mContext.getResources().getIdentifier(imageName, "drawable",
mContext.getPackageName());
// Add the menu item details to the menu item view.
menuItemHolder.menuItemImage.setImageResource(imageResID);
menuItemHolder.menuItemName.setText(menuItem.getName());
menuItemHolder.menuItemPrice.setText(menuItem.getPrice());
menuItemHolder.menuItemCategory.setText(menuItem.getCategory());
menuItemHolder.menuItemDescription.setText(menuItem.getDescription());
final int idsi= Integer.parseInt(menuItem.getDescription());
menuItemHolder.setItemClickListener(new ItemClickListener() {
@Override
public void onItemClick(View v, int pos) {
//Snackbar.make(v,String.valueOf(players.get(pos).getId()), Snackbar.LENGTH_SHORT).show();
try {
listener.onItemClick(v,idsi);
}
catch (Exception e){
}
//Toast.makeText(this.getApplicationContext(), "bak", Toast.LENGTH_LONG).show();
}
});
break;
case NATIVE_EXPRESS_AD_VIEW_TYPE:
// fall through
default:
NativeExpressAdViewHolder nativeExpressHolder =
(NativeExpressAdViewHolder) holder;
NativeExpressAdView adView =
(NativeExpressAdView) mRecyclerViewItems.get(position);
ViewGroup adCardView = (ViewGroup) nativeExpressHolder.itemView;
if (adCardView.getChildCount() > 0) {
adCardView.removeAllViews();
}
if (adView.getParent() != null) {
((ViewGroup) adView.getParent()).removeView(adView);
}
// Add the Native Express ad to the native express ad view.
adCardView.addView(adView);
}
}
}