我已经用帆布一个小游戏，现在我想在画布的顶部显示AdMob广告。在AdMob网站的例子说明我做到以下几点：

I have created a small game using Canvas, and now I want to display AdMob ads on top of the canvas. The Example on the AdMob site suggests I do the following:

 // Create an ad.
adView = new AdView(this);
adView.setAdSize(AdSize.BANNER);
adView.setAdUnitId(AD_UNIT_ID);

// Add the AdView to the view hierarchy. The view will have no size
// until the ad is loaded.
LinearLayout layout = (LinearLayout) findViewById(R.id.linearLayout);
layout.addView(adView);

不过，我设置内容查看到我创建了一个自定义画布如下：

However, I am setting the contentView to a Custom Canvas that I created as follows:

setContentView(new CanvasView(this));

CanvasView：

CanvasView:

public class CanvasView extends View {
    public CanvasView(Context context) {
        super(context);
        // TODO Auto-generated constructor stub
    }
...

我怎么可以在我的自定义画布？

How can I display AdMob ads on top of my Custom Canvas?

推荐答案

您不得不设置包含广告和画布作为内容视图的父布局。修改您的code如下：

You'd have to set the parent layout containing the ad and canvas as the content view. Modify your code as follows:

@Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

    // Create an ad.
    adView = new AdView(this);
    adView.setAdSize(AdSize.BANNER);
    adView.setAdUnitId(AD_UNIT_ID);

    // Add the AdView to the view hierarchy. The view will have no size
    // until the ad is loaded.
    RelativeLayout layout = new RelativeLayout(this);
    layout.setLayoutParams(new LayoutParams(LayoutParams.MATCH_PARENT,    LayoutParams.MATCH_PARENT));
    // Create an ad request.
    // get test ads on a physical device.
    AdRequest adRequest = new AdRequest.Builder()
      .addTestDevice(TestDeviceID)
      .build();

    // Start loading the ad in the background.
    adView.loadAd(adRequest);

    //Optional - Request full screen
    requestWindowFeature(Window.FEATURE_NO_TITLE);
    getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, 
    WindowManager.LayoutParams.FLAG_FULLSCREEN);

    //Create canvas view
   View myView = new CanvasView(this);

  //define ad view parameters
 RelativeLayout.LayoutParams adParams = 
            new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.WRAP_CONTENT, 
                    RelativeLayout.LayoutParams.WRAP_CONTENT);
        adParams.addRule(RelativeLayout.ALIGN_PARENT_BOTTOM);
        adParams.addRule(RelativeLayout.CENTER_HORIZONTAL);

    layout.addView(myView);
    layout.addView(adView, adParams);

    //Set main renderer             
    setContentView(layout);

}