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Android SurfaceView播放视频时横竖屏的调整

2024-11-01 15:12:39   204人阅读

对于横屏录制的视频就横屏播放，对于竖屏录制的视频就竖屏播放。

在mainifest文件里对负责播放的Activity添加以下属性“

 

    android:configChanges="orientation|keyboardHidden|screenSize"

 

 重写Acitivity的onConfigurationChanged方法：

 

    @Override        public void onConfigurationChanged(Configuration newConfig) {            super.onConfigurationChanged(newConfig);        }

 

根据视频的属性来区分：

    @Override        public void onVideoSizeChanged(MediaPlayer mp, int width, int height) {            if (width == 0 || height == 0) {                Log.e(TAG, "invalid video width(" + width + ") or height(" + height                        + ")");                return;            }            Logger.d(TAG, "onVideoSizeChanged width:" + width + " height:" + height);            mIsVideoSizeKnown = true;            mVideoHeight = height;            mVideoWidth = width;            int wid = mMediaPlayer.getVideoWidth();            int hig = mMediaPlayer.getVideoHeight();            // 根据视频的属性调整其显示的模式            if (wid > hig) {                if (getRequestedOrientation() != ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE) {                    setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);                }            } else {                if (getRequestedOrientation() != ActivityInfo.SCREEN_ORIENTATION_PORTRAIT) {                    setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);                }            }            DisplayMetrics dm = new DisplayMetrics();            getWindowManager().getDefaultDisplay().getMetrics(dm);            mSurfaceViewWidth = dm.widthPixels;            mSurfaceViewHeight = dm.heightPixels;            if (width > height) {                // 竖屏录制的视频，调节其上下的空余                int w = mSurfaceViewHeight * width / height;                int margin = (mSurfaceViewWidth - w) / 2;                Logger.d(TAG, "margin:" + margin);                RelativeLayout.LayoutParams lp = new RelativeLayout.LayoutParams(                        RelativeLayout.LayoutParams.MATCH_PARENT,                        RelativeLayout.LayoutParams.MATCH_PARENT);                lp.setMargins(margin, 0, margin, 0);                mSurfaceView.setLayoutParams(lp);            } else {                // 横屏录制的视频，调节其左右的空余                int h = mSurfaceViewWidth * height / width;                int margin = (mSurfaceViewHeight - h) / 2;                Logger.d(TAG, "margin:" + margin);                RelativeLayout.LayoutParams lp = new RelativeLayout.LayoutParams(                        RelativeLayout.LayoutParams.MATCH_PARENT,                        RelativeLayout.LayoutParams.MATCH_PARENT);                lp.setMargins(0, margin, 0, margin);                mSurfaceView.setLayoutParams(lp);            }        }

 

Android SurfaceView播放视频时横竖屏的调整


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