列表视图中的Google广告位于Android应用中的特定位置

Question

我想在纵向模式中的特定位置查看我的列表视图中的Google广告。

在点击广告和返回应用时会导致错误。

有时当没有错误发生时，广告视图高度增加，滚动列表视图时广告会浮动。

public class ListAdaptor extends BaseAdapter {
private Context context;
AdView adView = null;
private ArrayList<String> titleList, descriptionList, pubDateList,
        thumbnailList;
// int count = 2;
// private Context context;
private int listCount = 15;
//private final float mDensity;
int imageSize = 50;
LayoutInflater inflater;
int pageNumber = 0;

public ListAdaptor(Context c, ArrayList<String> titleList,
        ArrayList<String> descriptionList, ArrayList<String> pubDateList,
        ArrayList<String> thumbnailList, int pageNumber) {
    context = c;

    this.titleList = titleList;
    this.descriptionList = descriptionList;
    this.pubDateList = pubDateList;
    this.thumbnailList = thumbnailList;
    this.pageNumber = pageNumber;
    WindowManager wm = (WindowManager) context
            .getSystemService(Context.WINDOW_SERVICE);
    Display display = wm.getDefaultDisplay();
    Point size = new Point();
    display.getSize(size);

    // Log.d("imageSize "+display.getWidth(),"=="+imageSize);
    imageSize = size.x / 3;
    // Log.d("imageSize "+display.getHeight(),"="+imageSize);
    //mDensity = c.getResources().getDisplayMetrics().density;
    inflater = LayoutInflater.from(c);
    // for (int i = 2; i < titleList.size(); i = i + 6) {
    // titleList.add(i, "null");
    // descriptionList.add(i, "");
    // thumbnailList.add(i, "");
    // pubDateList.add(i, "");
    // i++;
    // }
    listCount = titleList.size();
}

@Override
public int getCount() {
    return listCount;
}

@Override
public Object getItem(int position) {
    return position;
}

@Override
public long getItemId(int position) {
    return position;
}

@SuppressWarnings("deprecation")
@SuppressLint("InflateParams")
@Override
public View getView(int position, View convertView, ViewGroup parent) {
    View view;
    if (titleList.get(position).equalsIgnoreCase("null")) {
        if (convertView == null || !(convertView instanceof AdView))
        {
            // Create a new AdView
            if(adView == null)
            {
                try{
                    // Create a banner ad. The ad size and ad unit ID must be set before calling loadAd.
                     adView = new AdView(context.getApplicationContext());
                     adView.setAdSize(com.google.android.gms.ads.AdSize.BANNER);
                     adView.setAdUnitId(context.getString(R.string.banner_ad_unit_id));

                    // Convert the default layout parameters so that they play nice
                    // with
                    // ListView.

                    float density = context.getResources().getDisplayMetrics().density;
                    int height = Math.round(AdSize.BANNER.getHeight() * density);
                    AbsListView.LayoutParams params = new AbsListView.LayoutParams(
                            AbsListView.LayoutParams.FILL_PARENT, height);
                    adView.setLayoutParams(params);
                    AdRequest adRequest = new AdRequest.Builder().
                            addTestDevice(Secure.getString(context.getContentResolver()
                                    ,Secure.ANDROID_ID)).build();
                    adView.loadAd(adRequest);
                    adView.setAdListener(new AdListener() {
                        @Override
                          public void onAdOpened() {
                            // Save app state before going to the ad overlay.
                          }
                    });
                }catch(Exception e){e.printStackTrace();}
            }

            return adView;
        } else {
            // Don’t instantiate new AdView, reuse old one
            return convertView;
        }
    } else {
        if (convertView == null || convertView instanceof AdView) {
            view = inflater.inflate(R.layout.card_item, null);
            // view.setLayoutParams(new
            // ListView.LayoutParams(LayoutParams.MATCH_PARENT,(int) (90 *
            // mDensity + 0.5f)));
        } else {
            view = convertView;
        }
        ImageView imgCardLitImage = (ImageView) view
                .findViewById(R.id.imgCardLitImage);
        TextView tvCardLitTitle = (TextView) view
                .findViewById(R.id.tvCardLitTitle);
        TextView tvCardListPubDate = (TextView) view
                .findViewById(R.id.tvPubDate);
        TextView tvCardLitDescription = (TextView) view
                .findViewById(R.id.tvDescription);
        ImageView imageVideoOverLay = (ImageView) view
                .findViewById(R.id.imageVideoOverLay);
        if (pageNumber == 1)
            imageVideoOverLay.setVisibility(View.VISIBLE);
        else
            imageVideoOverLay.setVisibility(View.GONE);
        /*
         * If ImageList item is not available ,then display Description with
         * Title
         */
        if (thumbnailList.get(position) == null
                && descriptionList.get(position) != null) {
            tvCardLitDescription.setVisibility(View.VISIBLE);
            tvCardLitDescription.setText(descriptionList.get(position));

        } else {
            tvCardLitDescription.setVisibility(View.GONE);
        }

        tvCardLitTitle.setText(titleList.get(position));
        tvCardListPubDate.setText(pubDateList.get(position));

        // imgCardLitImage.getLayoutParams().width = (int) (370 * mDensity +
        // 0.5f);
        // imgCardLitImage.getLayoutParams().height = (int) (220 * mDensity
        // + 0.5f);

        /* Loading Card list Images */
        try {
            new ImageLoader(context, imageSize).DisplayImage(
                    thumbnailList.get(position), imgCardLitImage);
        } catch (Exception e) {
            e.printStackTrace();

        }
    }

    return view;
}
}