我正在尝试动态设置
Android VideoView的大小.我看过StackOverflow以及互联网;我找到的最佳解决方案是从
here开始.我已经将我的实现放在下面：
public class ResizableVideoView extends VideoView {
public ResizableVideoView(Context c) {
super(c);
}
private int mVideoWidth = 100;
private int mVideoHeight = 100;
public void changeVideoSize(int width,int height) {
mVideoWidth = width;
mVideoHeight = height;
// not sure whether it is useful or not but safe to do so
getHolder().setFixedSize(width,height);
forceLayout();
invalidate(); // very important,so that onMeasure will be triggered
}
public void onMeasure(int specwidth,int specheight) {
Log.i("onMeasure","On Measure has been called");
setMeasuredDimension(mVideoWidth,mVideoHeight);
}
public void onDraw(Canvas c) {
super.onDraw(c);
Log.i("onDraw","Drawing...");
}
}
视频在Android模拟器和Motorola Droid X上正确调整大小;但在摩托罗拉Droid上,VideoView会调整大小,但VideoView中播放的视频不会调整大小.在摩托罗拉Droid上,如果VideoView设置为比视频播放更大的尺寸,VideoView中会出现黑色背景,视频在VideoView的左上角播放在黑色背景的顶部.
如何在Android中正确调整VideoView的大小？
谢谢,
万斯
解决方法
我的实现是这样的：
RelativeLayout.LayoutParams videoviewlp = new RelativeLayout.LayoutParams(newwidth,newheight);
videoviewlp.addRule(RelativeLayout.CENTER_HORIZONTAL,RelativeLayout.TRUE);
videoviewlp.addRule(RelativeLayout.CENTER_VERTICAL,RelativeLayout.TRUE);
videoview.setLayoutParams(videoviewlp);
videoview.invalidate();
通过使视频视图无效,您将强制它使用新的LayoutParams(以及新尺寸)重绘整个视频视图.