How to make VideoView full screen

Question

I want to play a video in my Activity using a VideoView,and make it fullscreen and landscape mode (with hiding virtual button and stat

Answer 1

At Last, I solve it with Kristo1990 and prashantwosti 's help My code is :

RelativeLayout.LayoutParams layoutParams = new RelativeLayout.LayoutParams(
                RelativeLayout.LayoutParams.MATCH_PARENT,
                RelativeLayout.LayoutParams.MATCH_PARENT
        );
private void enterFullScreen(){
        this.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);//设置横屏
        mVideoView.setSystemUiVisibility(
                View.SYSTEM_UI_FLAG_LAYOUT_STABLE
                        | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
                        | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
                        | View.SYSTEM_UI_FLAG_HIDE_NAVIGATION
                        | View.SYSTEM_UI_FLAG_FULLSCREEN
                        | View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY);
        layoutParams.addRule(RelativeLayout.ALIGN_PARENT_BOTTOM);
        layoutParams.addRule(RelativeLayout.ALIGN_PARENT_TOP);
        layoutParams.addRule(RelativeLayout.ALIGN_PARENT_LEFT);
        layoutParams.addRule(RelativeLayout.ALIGN_PARENT_RIGHT);
        mVideoView.setLayoutParams(layoutParams);
    }

private void exitFullScreen(){
          this.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
            mVideoView.setSystemUiVisibility(0);
            isFullScreen = false;
            mFullScreen.setVisibility(View.INVISIBLE);
            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
                layoutParams.removeRule(RelativeLayout.ALIGN_PARENT_BOTTOM);
                layoutParams.removeRule(RelativeLayout.ALIGN_PARENT_TOP);
                layoutParams.removeRule(RelativeLayout.ALIGN_PARENT_LEFT);
                layoutParams.removeRule(RelativeLayout.ALIGN_PARENT_RIGHT);
            }else {
                layoutParams.addRule(RelativeLayout.ALIGN_PARENT_BOTTOM,0);
                layoutParams.addRule(RelativeLayout.ALIGN_PARENT_TOP,0);
                layoutParams.addRule(RelativeLayout.ALIGN_PARENT_LEFT,0);
                layoutParams.addRule(RelativeLayout.ALIGN_PARENT_RIGHT,0);
            }
            mFullScreen.setVisibility(View.VISIBLE);

            mVideoView.setLayoutParams(layoutParams);
        }

And at last I override the KEYCODE_BACK to exit fullscreen I hope it can help you all and thank you again.