Android牛轧糖PopupWindow showAsDropDown(...)重力不起作用 [英] Android Nougat PopupWindow showAsDropDown(...) Gravity not working

问题描述

我有这个代码.

PopupWindow popUp = new PopupWindow();
popUp.setFocusable(true);
popUp.setOutsideTouchable(true);        
popUp.setWidth(ViewGroup.LayoutParams.MATCH_PARENT);
popUp.setHeight(600);

popUp.setContentView(anchorView);
popUp.showAsDropDown(anchorView);
popUp.update();

其完美适用于Android版本< Android牛轧糖.但是在Android Nougat中，弹出窗口显示在屏幕顶部，而不是相对于锚视图.

And its perfectly works on Android Version < Android Nougat. But in Android Nougat, the popup is being displayed at the top of the screen instead of relative to the anchor view.

推荐答案

似乎是android 7.0中的错误.但您可以使用 兼容的方式.

It seems a bug in android 7.0. But you can solve it with a compatible way.

PopupWindow popUp = new PopupWindow();
popUp.setFocusable(true);
popUp.setOutsideTouchable(true);        
popUp.setWidth(ViewGroup.LayoutParams.MATCH_PARENT);
popUp.setHeight(600);

popUp.setContentView(anchorView);
  if (android.os.Build.VERSION.SDK_INT >=24) {
     int[] a = new int[2]; //getLocationInWindow required array of size 2
     anchorView.getLocationInWindow(a);
     popUp.showAtLocation(((Activity) mContext).getWindow().getDecorView(), Gravity.NO_GRAVITY, 0 , a[1]+anchorView.getHeight());
    } else{
     popUp.showAsDropDown(anchorView);
}

popUp.update();

Google将在以后的版本中修复此错误.最后有一个解决方法.创建弹出广告时，您需要提供高度.

Google will fix this bug in the future build. And there is a final workaround. You need give the height when creating pop.

PopupWindow popup = new PopupWindow(contentView, with, height);

如上初始化弹出，您只能使用 popUp.showAsDropDown(anchorView)显示此弹出窗口.这样，您可以忽略Android API的版本.

Init pop as above, and you can only use popUp.showAsDropDown(anchorView) show this popup. In this way, you can ignore the version of the Android API.

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