Android VideoView比例缩放

Question

在Android的VideoView中，有什么方法可以达到和ImageView.ScaleType.CENTER_CROP一样的效果吗？

也就是说，我希望我的 VideoView 播放视频，使其充满整个屏幕而不会失真。如果视频宽高比不完全适合屏幕，则应对其进行裁剪而不是扭曲。

以下解决方案将填满屏幕，但不保持视频的纵横比: https://stackoverflow.com/a/6927300/1068656

并且此解决方案保持视频的宽高比，但不会填满整个屏幕(视频会缩放直到较长的边碰到屏幕的边缘，从而在边上引入条形图): https://stackoverflow.com/a/4855315/1068656

Answer 1

虽然为时已晚，但它可能会帮助其他人寻找同样的问题。以下答案保持纵横比(videoProportion)。的额外部分videoview 被手机的 View 裁剪。

private void setDimension() {
     // Adjust the size of the video
     // so it fits on the screen
     float videoProportion = getVideoProportion();
     int screenWidth = getResources().getDisplayMetrics().widthPixels;
     int screenHeight = getResources().getDisplayMetrics().heightPixels;
     float screenProportion = (float) screenHeight / (float) screenWidth;
     android.view.ViewGroup.LayoutParams lp = videoView.getLayoutParams();

     if (videoProportion < screenProportion) {
         lp.height= screenHeight;
         lp.width = (int) ((float) screenHeight / videoProportion);
     } else {
         lp.width = screenWidth;
         lp.height = (int) ((float) screenWidth * videoProportion);
     }
     videoView.setLayoutParams(lp);
 }

// This method gets the proportion of the video that you want to display.
// I already know this ratio since my video is hardcoded, you can get the  
// height and width of your video and appropriately generate  the proportion  
//    as :height/width 
private float getVideoProportion(){
  return 1.5f;
}