在回收审核中添加 AdMob 原生广告

Question

我正在尝试在recyclerview片段中宣传admob's原生广告，该片段显示在viewpager内。

我的片段看起来像：

public class SunFragment extends Fragment {
public static final int NUMBER_OF_ADS = 1;
private AdLoader adLoader;
private List<Object> mRecyclerViewItems = new ArrayList<>();
private List<UnifiedNativeAd> mNativeAds = new ArrayList<>();
ArrayList<Object> sunsList;
Typeface sunfont;
Double Dlat;
Double Dlang;
//to be called by the MainActivity
public SunFragment() {
// Required empty public constructor
}

private static final String KEY_LOCATION_NAME = "location_name";
public String TAG = "SunFragment";
public String location;//="No location name found";
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if (savedInstanceState != null) {
location = savedInstanceState.getCharSequence(KEY_LOCATION_NAME).toString();
}
setRetainInstance(true);
loadNativeAds();
//MainActivity activity = (MainActivity) getActivity();
mRecyclerViewItems = this.getRecyclerViewItems();
}
//  public List<Object> getRecyclerViewItems() {
//    return mRecyclerViewItems;
//  }
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
sunsList = new ArrayList<>();
sunsList.add(
new SunSession(...//Populate sunsList one by one//...)
View rootView = inflater.inflate(R.layout.fragment_sun, container, false);
RecyclerView rv = rootView.findViewById(R.id.rv_recycler_view);
rv.setNestedScrollingEnabled(false);
rv.setHasFixedSize(true);
RecyclerView.LayoutManager llm = new LinearLayoutManager(getActivity());
rv.setLayoutManager(llm);
//    System.out.println("location  " + location);
setRetainInstance(true);
RecyclerView.Adapter adapter = new SunAdapter(getContext(), sunsList);
rv.setAdapter(adapter);
return rootView;
}

@Override
public void onSaveInstanceState(Bundle locState) {
super.onSaveInstanceState(locState);
if (location != null) {
locState.putCharSequence(KEY_LOCATION_NAME, location);
}
}
public List<Object> getRecyclerViewItems() {
return mRecyclerViewItems;
}
private void insertAdsInMenuItems() {
if (mNativeAds.size() <= 0) {
return;
}
int offset = (mRecyclerViewItems.size() / mNativeAds.size()) + 1;
int index = 0;
for (UnifiedNativeAd ad : mNativeAds) {
mRecyclerViewItems.add(index, ad);
index = index + offset;
}
//loadMenu();
}
private void loadNativeAds() {
Toast.makeText(getContext(), "Here I am", Toast.LENGTH_LONG).show();
AdLoader.Builder builder = new AdLoader.Builder(getContext(), getString(R.string.ad_unit_id));
adLoader = builder.forUnifiedNativeAd(
new UnifiedNativeAd.OnUnifiedNativeAdLoadedListener() {
@Override
public void onUnifiedNativeAdLoaded(UnifiedNativeAd unifiedNativeAd) {
// A native ad loaded successfully, check if the ad loader has finished loading
// and if so, insert the ads into the list.
mNativeAds.add(unifiedNativeAd);
if (!adLoader.isLoading()) {
insertAdsInMenuItems();
}
}
}).withAdListener(
new AdListener() {
@Override
public void onAdFailedToLoad(int errorCode) {
// A native ad failed to load, check if the ad loader has finished loading
// and if so, insert the ads into the list.
Log.e("MainActivity", "The previous native ad failed to load. Attempting to"
+ " load another.");
if (!adLoader.isLoading()) {
insertAdsInMenuItems();
}
}
}).build();
// Load the Native ads.
adLoader.loadAds(new AdRequest.Builder().build(), NUMBER_OF_ADS);
}
}

我的适配器是：

public class SunAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {
private final Context mContext;
private final ArrayList<Object> mSunsList;
private static final int MENU_ITEM_VIEW_TYPE = 0;
private static final int UNIFIED_NATIVE_AD_VIEW_TYPE = 1;

public SunAdapter(Context context, ArrayList<Object> sunsList) {
this.mContext = context;
this.mSunsList = sunsList;
}
public class MyViewHolder extends RecyclerView.ViewHolder {
private TextView textViewId;
private TextView textViewSicon;
private TextView textViewStime;
private TextView textViewEicon;
private TextView textViewEtime;
private TextView ntextViewSicon;
private TextView ntextViewStime;
private TextView ntextViewEicon;
private TextView ntextViewEtime;
MyViewHolder(View itemView) {
super(itemView);
textViewId = itemView.findViewById(R.id.tv_city);
textViewSicon = itemView.findViewById(R.id.tv_MSicon);
textViewStime = itemView.findViewById(R.id.tv_MStime);
textViewEicon = itemView.findViewById(R.id.tv_MEicon);
textViewEtime = itemView.findViewById(R.id.tv_MEtime);
ntextViewSicon = itemView.findViewById(R.id.tv_NSicon);
ntextViewStime = itemView.findViewById(R.id.tv_NStime);
ntextViewEicon = itemView.findViewById(R.id.tv_NEicon);
ntextViewEtime = itemView.findViewById(R.id.tv_NEtime);
//    mSportsImage = itemView.findViewById(R.id.sportsImage);
}
}

@Override
public int getItemCount() {
return mSunsList.size();
}
@Override
public int getItemViewType(int position) {
Object sunList = mSunsList.get(position);
if (sunList instanceof UnifiedNativeAd) {
return UNIFIED_NATIVE_AD_VIEW_TYPE;
}
return MENU_ITEM_VIEW_TYPE;
}
@Override
public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup viewGroup, int viewType) {
switch (viewType) {
case UNIFIED_NATIVE_AD_VIEW_TYPE:
View unifiedNativeLayoutView = LayoutInflater.from(
viewGroup.getContext()).inflate(R.layout.ad_unified,
viewGroup, false);
return new UnifiedNativeAdViewHolder(unifiedNativeLayoutView);
case MENU_ITEM_VIEW_TYPE:
// Fall through.
default:
View menuItemLayoutView = LayoutInflater.from(viewGroup.getContext()).inflate(
R.layout.card_item, viewGroup, false);
return new MyViewHolder(menuItemLayoutView);
}
}
// @RequiresApi(api = Build.VERSION_CODES.N)
@Override
public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {
int viewType = getItemViewType(position);
switch (viewType) {
case UNIFIED_NATIVE_AD_VIEW_TYPE:
UnifiedNativeAd nativeAd = (UnifiedNativeAd) mSunsList.get(position);
populateNativeAdView(nativeAd, ((UnifiedNativeAdViewHolder) holder).getAdView());
break;
case MENU_ITEM_VIEW_TYPE:
// fall through
default:
MyViewHolder myViewHolder = (MyViewHolder) holder;
SunSession sunSession = (SunSession) mSunsList.get(position);
myViewHolder.textViewId.setText(sunSession.getId());
myViewHolder.textViewSicon.setText(HtmlCompat.fromHtml(sunSession.getSicon(), HtmlCompat.FROM_HTML_MODE_LEGACY));
myViewHolder.textViewStime.setText(sunSession.getStime());
myViewHolder.textViewEicon.setText(HtmlCompat.fromHtml(sunSession.getEicon(), HtmlCompat.FROM_HTML_MODE_LEGACY));
myViewHolder.textViewEtime.setText(sunSession.getEtime());
myViewHolder.ntextViewSicon.setText(HtmlCompat.fromHtml(sunSession.getNSicon(), HtmlCompat.FROM_HTML_MODE_LEGACY));
myViewHolder.ntextViewStime.setText(sunSession.getNStime());
myViewHolder.ntextViewEicon.setText(HtmlCompat.fromHtml(sunSession.getNEicon(), HtmlCompat.FROM_HTML_MODE_LEGACY));
myViewHolder.ntextViewEtime.setText(sunSession.getNEtime());
}
}

private void populateNativeAdView(UnifiedNativeAd nativeAd,
UnifiedNativeAdView adView) {
// Some assets are guaranteed to be in every UnifiedNativeAd.
((TextView) adView.getHeadlineView()).setText(nativeAd.getHeadline());
((TextView) adView.getBodyView()).setText(nativeAd.getBody());
((Button) adView.getCallToActionView()).setText(nativeAd.getCallToAction());
// These assets aren't guaranteed to be in every UnifiedNativeAd, so it's important to
// check before trying to display them.
NativeAd.Image icon = nativeAd.getIcon();
if (icon == null) {
adView.getIconView().setVisibility(View.INVISIBLE);
} else {
((ImageView) adView.getIconView()).setImageDrawable(icon.getDrawable());
adView.getIconView().setVisibility(View.VISIBLE);
}
if (nativeAd.getPrice() == null) {
adView.getPriceView().setVisibility(View.INVISIBLE);
} else {
adView.getPriceView().setVisibility(View.VISIBLE);
((TextView) adView.getPriceView()).setText(nativeAd.getPrice());
}
if (nativeAd.getStore() == null) {
adView.getStoreView().setVisibility(View.INVISIBLE);
} else {
adView.getStoreView().setVisibility(View.VISIBLE);
((TextView) adView.getStoreView()).setText(nativeAd.getStore());
}
if (nativeAd.getStarRating() == null) {
adView.getStarRatingView().setVisibility(View.INVISIBLE);
} else {
((RatingBar) adView.getStarRatingView())
.setRating(nativeAd.getStarRating().floatValue());
adView.getStarRatingView().setVisibility(View.VISIBLE);
}
if (nativeAd.getAdvertiser() == null) {
adView.getAdvertiserView().setVisibility(View.INVISIBLE);
} else {
((TextView) adView.getAdvertiserView()).setText(nativeAd.getAdvertiser());
adView.getAdvertiserView().setVisibility(View.VISIBLE);
}
// Assign native ad object to the native view.
adView.setNativeAd(nativeAd);
}
}

广告已在MainActivity初始化为：

MobileAds.initialize(this, getString(R.string.admob_app_id));

代码没有显示错误，并且 SunList 数组(即MENU_ITEM_VIEW_TYPE( 正确显示。 但是广告视图(即UNIFIED_NATIVE_AD_VIEW_TYPE(没有显示任何标志，即使作为占位符也是如此。

该片段由主活动作为查看页程序(由默认选项卡式活动生成(调用，如下所示：

SectionsPagerAdapter sectionsPagerAdapter = new SectionsPagerAdapter(this,
getSupportFragmentManager(), Lat, Long);

我在这里做错了什么？

注意：我正在使用火力基地

我怀疑更新，

@Override
public int getItemViewType(int position) {
Object sunList = mSunsList.get(position);
if (sunList instanceof UnifiedNativeAd) {
System.out.println("==================Hello==============");
return UNIFIED_NATIVE_AD_VIEW_TYPE;
}
return MENU_ITEM_VIEW_TYPE;
} 

从来都不是真的。字符串从未打印

更新可能我已经找到了问题，但不知道如何解决：

如果我将getItemViewType更改为：

public int getItemViewType(int position) {
Object sunList = mSunsList.get(position);
//    if (sunList instanceof UnifiedNativeAd) {
if (position%3==0){
System.out.println("=================="+position+"==============");
return UNIFIED_NATIVE_AD_VIEW_TYPE;
}
return MENU_ITEM_VIEW_TYPE;
}

然后我得到错误：

java.lang.ClassCastException: com.example.phocast.ui.main.SunSession cannot be cast to com.google.android.gms.ads.formats.UnifiedNativeAd

在onBindViewHolder的这一行中：

UnifiedNativeAd nativeAd = (UnifiedNativeAd) mSunsList.get(position);

请帮忙

Answer 1

您可以在"添加"时加载"添加"，显示在回收器视图中。 不在活动中

Answer 2

我认为您的本机无法正确加载。 1( 确保您的广告在回收视图中插入。在所有方法中添加日志并确认它正在正确加载。

2( 在测试应用使用测试广告 ID 期间。

3(在加载广告更新回收视图后

adapter.notifyDataSetChanged();

4(以下方法没有问题。

@Override
public int getItemViewType(int position) {
Object sunList = mSunsList.get(position);
if (sunList instanceof UnifiedNativeAd) {
System.out.println("==================Hello==============");
return UNIFIED_NATIVE_AD_VIEW_TYPE;
}
return MENU_ITEM_VIEW_TYPE;
} 

如果仍然没有收到广告，请告诉我。