如何根据视频的高度和宽度设置屏幕方向

Question

I am using videoview , in the onPrepared method and it returns the media player height and width. Then I check if the width of the video is greater than the height and rotate the screen. The problem is that if I rotate the screen orientation, it again calls the onCreate method and then recalls all of the code so it takes time to initialize the video again.

    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        // Get the layout from video_main.xml
        setContentView(R.layout.play_video_activity);

        // Insert your Video URL
        String VideoURL = "http://www.androidbegin.com/tutorial/AndroidCommercial.3gp";

        // Find your VideoView in your video_main.xml layout
        final VideoView videoview = (VideoView) findViewById(R.id.VideoView);
        // Execute StreamVideo AsyncTask

        // Create a progressbar
        final ProgressDialog pDialog;
        pDialog = new ProgressDialog(PlayVideoActivity.this);
        // Set progressbar title
        pDialog.setTitle("Android Video Streaming Tutorial");
        // Set progressbar message
        pDialog.setMessage("Buffering...");
        pDialog.setIndeterminate(false);
        pDialog.setCancelable(false);
        // Show progressbar
        pDialog.show();

        try {
            // Start the MediaController
            MediaController mediacontroller = new MediaController(
                    PlayVideoActivity.this);
            mediacontroller.setAnchorView(videoview);
            // Get the URL from String VideoURL
            Uri video = Uri.parse(VideoURL);
            videoview.setMediaController(mediacontroller);
            videoview.setVideoURI(video);

        } catch (Exception e) {
            Log.e("Error", e.getMessage());
            e.printStackTrace();
        }

        videoview.requestFocus();
        videoview.setOnPreparedListener(new OnPreparedListener() {
            // Close the progress bar and play the video
            public void onPrepared(MediaPlayer mp) {
                pDialog.dismiss();
                videoview.start();

                if(mp.getVideoWidth()> mp.getVideoHeight())
                {
                    setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
                }
            }
        });
    }

Answer 1

Add android:configChanges="orientation" to your activity in manifest file

Declare variables in your activity

boolean orienChanged = false;
int lastOrientation = 0;

Override method

@Override
public void onConfigurationChanged(Configuration newConfig) {
    super.onConfigurationChanged(newConfig);
    int orientation = newConfig.orientation;
    if(orientation != lastOrientation){
       orienChanged  = true;
       lastOrientation = orientation ;
    }

}

Check the variable orienChanged in onCreate() for only initial time it will be false,otherwise it must be true.

Answer 2

Initialize new configuration oncreate... and make newConfigOD valiable global.

 Configuration newConfigOD = getResources().getConfiguration();    

Then override this method..

@Override
public void onConfigurationChanged(Configuration newConfig) {
    super.onConfigurationChanged(newConfig);
    if(videoview.getVideoWidth()> videoview.getVideoHeight())  {
        if (newConfigOD.orientation != Configuration.ORIENTATION_LANDSCAPE) {
         setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
        } 
    } else {
        setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
    }
}

Try this... this should work as per your requirement. And remove this if condition from onCreate()

Answer 3

Auto set orientation according to video scale.

1. Implement addVideoListener()

    videoPlayer.addVideoListener(new VideoListener() { @Override public void onVideoSizeChanged(int width, int height, int unappliedRotationDegrees, float pixelWidthHeightRatio) { } @Override public void onRenderedFirstFrame() {} });

2. According to height & width set conditions

    if(width>height){ setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE); } if(height>width){ setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT); }

3. Your final objective would be like

   videoPlayer.addVideoListener(new VideoListener() { @Override public void onVideoSizeChanged(int width, int height, int unappliedRotationDegrees, float pixelWidthHeightRatio) { if(width>height){ setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE); } if(height>width){ setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT); } } @Override public void onRenderedFirstFrame() {} });