Question

我有一个应用程序，其中包含recyclelerview和progressbar在底部，当我滚动到recyclerview结束它发送服务器请求更多数据，这是正常工作但问题是我想在recyclerview之间随机添加广告位置。我如何在recyclerview中随机添加它。

代码： -

@Override
public int getItemViewType(int position) {
    return contacts.get(position) == null ? VIEW_TYPE_LOADING : VIEW_TYPE_ITEM;
}

@Override
public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
    if (viewType == 0) {
        View view = LayoutInflater.from(activity).inflate(R.layout.item_recycler_view_row, parent, false);
        return new UserViewHolder(view);
    } else if (viewType == 1) {
        View view = LayoutInflater.from(activity).inflate(R.layout.item_loading, parent, false);
        return new LoadingViewHolder(view);
    } else {

    }
    return null;
}

@Override
public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {
    if (holder instanceof UserViewHolder) {
        Contact contact = contacts.get(position);
        UserViewHolder userViewHolder = (UserViewHolder) holder;
        userViewHolder.phone.setText(contact.getEmail());
        userViewHolder.email.setText(contact.getPhone());
    } else if (holder instanceof LoadingViewHolder) {
        LoadingViewHolder loadingViewHolder = (LoadingViewHolder) holder;
        loadingViewHolder.progressBar.setIndeterminate(true);
    }
}

@Override
public int getItemCount() {
    return contacts == null ? 0 : contacts.size();
}

Answer 1

在适配器中，首先需要覆盖getItemViewType()，例如：

@Override
public int getItemViewType(int position) {
    if (contacts.get(position) == null)
        return VIEW_TYPE_LOADING;
    else if (position % 5 == 0)
        return AD_TYPE;
    else {
        return VIEW_TYPE_ITEM;
    }
}

在onCreateViewHolder之后，根据这样的类型膨胀不同的视图：

@Override
public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup viewGroup, int viewType) {
    View view = null;
    if (viewType == AD_TYPE) {
        View adView = LayoutInflater.from(parent.getContext()).inflate(R.layout.native_ads, viewGroup, false);
        return new ViewHolderAdMob(adView);
    } else if (viewType == VIEW_TYPE_ITEM) {
        view = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.list_item_layout, viewGroup, false);
        return new UserViewHolder(view);
    }else if (viewType == VIEW_TYPE_LOADING) {
        view = LayoutInflater.from(activity).inflate(R.layout.item_loading, viewGroup, false);
        return new LoadingViewHolder(view);
    }
    return null;
}

原生广告xml

<com.google.android.gms.ads.AdView
    android:id="@+id/adView"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_centerHorizontal="true"
    android:layout_alignParentBottom="true"
    ads:adSize="BANNER"
    ads:adUnitId="@string/banner_ad_unit_id">
</com.google.android.gms.ads.AdView>

AdViewHolder类

public static class ViewHolderAdMob extends RecyclerView.ViewHolder {
    public AdView mAdView;
    public ViewHolderAdMob(View view) {
        super(view);
        mAdView = (AdView) view.findViewById(R.id.adView);
        AdRequest adRequest = new AdRequest.Builder()
                .addTestDevice(AdRequest.DEVICE_ID_EMULATOR)
                .build();
        mAdView.loadAd(adRequest);
    }
}

另外，请不要忘记相应地更改getItemCount()：return contacts.size()+ (contacts.size() % 5)

如何在recyclelerview中的随机位置添加广告，底部有进度条？

1 个答案: