android在出现时获取adMob横幅高度
我正在成功地将 adMob 横幅添加到我的应用中.当横幅出现时,我需要获取它的高度以调整所有布局元素的大小.我正在使用正确触发的事件 onReceivedAd.但是,alturaBanner = 0.那么,如何得到它的高度呢?谢谢.
I am adding an adMob banner to my app successfully. When banner appears I need to get its height in order to resize all layout elements. I am using the event onReceivedAd, that is properly fired. However, alturaBanner is = 0. Then, how to get its height? thank you.
/** Called when an ad is received. */
@Override
public void onReceiveAd(Ad ad)
{
adView.setVisibility(View.VISIBLE);
int alturaBanner = adView.getHeight();
RelativeLayout.LayoutParams params1 = (android.widget.RelativeLayout.LayoutParams) browse2
.getLayoutParams();
params1.setMargins(0, alturaBanner, 0, 0);
Log.d(LOG_TAG, "onReceiveAd");
Toast.makeText(this, "onReceiveAd", Toast.LENGTH_SHORT).show();
}
推荐答案
在视图准备好之前获取它的高度总是会返回 0 .无论您拥有哪种设备/屏幕,都可以使用下一个代码来获得正确的尺寸:
getting the height of the view before it was prepared will always return you 0 . use the next code in order to get its correct size , no matter which device/screen you have:
private static void runJustBeforeBeingDrawn(final View view, final Runnable runnable)
{
final ViewTreeObserver vto = view.getViewTreeObserver();
final OnPreDrawListener preDrawListener = new OnPreDrawListener()
{
@Override
public boolean onPreDraw()
{
runnable.run();
final ViewTreeObserver vto = view.getViewTreeObserver();
vto.removeOnPreDrawListener(this);
return true;
}
};
vto.addOnPreDrawListener(preDrawListener);
}
在给定的 runnable 中,可以查询视图的实际大小.
inside the given runnable , you can query the real size of the view.
或者,如果您愿意,您可以使用 addOnGlobalLayoutListener 代替 addOnPreDrawListener.
alternatively , you can use addOnGlobalLayoutListener instead of addOnPreDrawListener if you wish.
另一种方法是使用 onWindowFocusChanged(并检查 hasFocus==true),但这并不总是最好的方法(仅用于简单的视图创建,而不用于动态创建)
another approach is to use onWindowFocusChanged (and check that hasFocus==true) , but that's not always the best way ( only use for simple views-creation, not for dynamic creations)
替代 runJustBeforeBeingDrawn:https://stackoverflow.com/a/28136027/878126
Alternative to runJustBeforeBeingDrawn: https://stackoverflow.com/a/28136027/878126
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