Android View在没有XML的情况下对齐底部（以编程方式）

Question

设置将视图以编程方式对齐到屏幕底部时出现问题。基本上我只想把我的admob广告放在屏幕底部。我不能用XML来做，因为它会更麻烦。现在我已经让广告正常工作，并将其手动添加到RelativeLayout，但默认情况下它出现在屏幕顶部。我试图使用重力命令，但无法使其工作。

这是代码片段：

    _glSurfaceView = new CCGLSurfaceView(this);

    adView = new AdView(this, AdSize.BANNER, "a14e04559caea39");
    adView.loadAd(new AdRequest());
    adView.setGravity(Gravity.BOTTOM);

    RelativeLayout rl = new RelativeLayout(this);

    rl.addView(_glSurfaceView);
    rl.addView(adView);     

    setContentView(rl);
    adView.loadAd(new AdRequest());

谁能帮我吗？

Answer 1

蜻蜓的回答对我有用。以下是参考的完整代码段

adView = new AdView(this, AdSize.BANNER, "xxxxxxxxxxxxxxx");
panel = new MySurfaceView(this);

AdRequest adRequest = new AdRequest();
adRequest.addTestDevice(AdRequest.TEST_EMULATOR);

RelativeLayout rl = new RelativeLayout(this);
RelativeLayout.LayoutParams lay = new RelativeLayout.LayoutParams(
    RelativeLayout.LayoutParams.WRAP_CONTENT, 
    RelativeLayout.LayoutParams.WRAP_CONTENT);

lay.addRule(RelativeLayout.ALIGN_PARENT_BOTTOM);

rl.addView(panel);
rl.addView(adView, lay);

setContentView(rl);

adView.loadAd(adRequest);

Answer 2

RelativeLayout.LayoutParams p = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.WRAP_CONTENT, RelativeLayout.LayoutParams.WRAP_CONTENT);
 p.addRule(RelativeLayout.ALIGN_BOTTOM, tv.getId());

Answer 3

使用LayoutParams将广告添加到RelativeLayout，如下所示：

RelativeLayout.LayoutParams rparams = (LayoutParams) rl
            .getLayoutParams();
    rparams.addRule(RelativeLayout.ALIGN_PARENT_BOTTOM);
    ((ViewGroup) rl).addView(adView, rparams);

而不仅仅是

rl.addView(adView);   

祝好运！ :)

Answer 4

    ImageButton buttonAdvance = new ImageButton(this);
    RelativeLayout.LayoutParams params = new       RelativeLayout.LayoutParams(160, 160);
    params.leftMargin = 5;
    params.bottomMargin = 4;
    params.addRule(RelativeLayout.ALIGN_PARENT_BOTTOM);
    buttonAdvance.setLayoutParams(params);