Android后退按钮无效。但它在播放视频之前有效。我正在为VideoView使用自定义MediaController。
我尝试使用 dispatchKeyEvent ,它无效。
使用VideoView的活动代码:
mc = new CustomMediaController(mVideo.getContext(), screenIcon) {
@Override
public void hide(){
}
@Override
public boolean dispatchKeyEvent(KeyEvent event){
if (event.getKeyCode() == KeyEvent.KEYCODE_BACK) {
super.hide();
((Activity) getContext()).finish();
return true;
}
return super.dispatchKeyEvent(event);
}
};
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if ((keyCode == KeyEvent.KEYCODE_BACK)) {
onBackPressed();
finish();
}
return true;
}
@Override
public void onBackPressed() {
super.onBackPressed();
finish();
}
CustomMediaController还包含dispatchKeyEvent:
@Override
public boolean dispatchKeyEvent(KeyEvent event) {
if (event.getKeyCode() == KeyEvent.KEYCODE_BACK) {
((Activity) getContext()).finish();
}
return super.dispatchKeyEvent(event);
}
另外,当我滚动布局时,mediaController没有保持其在videoView中的位置。为了解决这个错误,我添加了一个代码来修复mediaController的位置。
FrameLayout f;
RelativeLayout.LayoutParams lp;
RelativeLayout.LayoutParams params;
params = (RelativeLayout.LayoutParams) mVideo.getLayoutParams();
params.height = mp.getVideoHeight();
progress.dismiss();
f = (FrameLayout) mc.getParent();
lp = new RelativeLayout.LayoutParams(
RelativeLayout.LayoutParams.MATCH_PARENT, RelativeLayout.LayoutParams.WRAP_CONTENT);
lp.addRule(RelativeLayout.ALIGN_BOTTOM, mVideo.getId());
try {
((LinearLayout) f.getParent()).removeView(f);
} catch (Exception e) {
((RelativeLayout) f.getParent()).removeView(f);
}
((RelativeLayout) mVideo.getParent()).addView(f, lp);
//mc.setAnchorView(mVideo);
mVideo.setLayoutParams(params);
当我删除上面的代码时,后退按钮非常适用。
我在堆栈溢出中经历了以下问题,但没有解决我的问题
我试过的Stack Overflow链接:
Android back button and MediaController
Back button won't work when VideoView is playing video
First Back button press not caught when playing a video android
Problem with back button in VideoView
答案 0 :(得分:0)
在我的mediacontroller中覆盖了dispatchKeyEvent()之后,它工作正常
mediaController=new MediaController(this){
@Override
public void hide() {
mediaController.show();
}
@Override
public boolean dispatchKeyEvent(KeyEvent event){
if (event.getKeyCode() == KeyEvent.KEYCODE_BACK) {
super.hide();
((Activity) getContext()).finish();
return true;
}
return super.dispatchKeyEvent(event);
}
};
videoView.setMediaController(mediaController);