In previous posts we discussed about how to generate  youtube video thumb and video_id. Now we are going to implement how to play videos in your android app by going through below easy steps.

Step1: First adding YouTubeAndroidPlayerApi library in your android project.

    compile files('libs/YouTubeAndroidPlayerApi.jar')

Step2: Adding FrameLayout to the xml file.

<FrameLayout
        android:id="@+id/youtube_view"
        android:name="com.google.android.youtube.player.YouTubePlayerSupportFragment"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_centerInParent="true"/>

Step3: Initializing YouTubePlayerSupportFragment and FrameLayout.

private YouTubePlayerSupportFragment mYoutubePlayerFragment;
    private FrameLayout youtube_view;

    youtube_view = (FrameLayout)findViewById(R.id.youtube_view);
    mYoutubePlayerFragment = new YouTubePlayerSupportFragment();

Step4: Now calling onInitializationSuccess and onInitializationFailure methods to play video.

try{
            // Initializing video player with developer key
            mYoutubePlayerFragment.initialize(Config.DEVELOPER_KEY, new YouTubePlayer.OnInitializedListener() {
                @Override
                public void onInitializationSuccess(YouTubePlayer.Provider provider, final YouTubePlayer youTubePlayer, boolean b) {

                    if (!b) {
                        //showPlayer();
                        videoPlayer = youTubePlayer;

                        videoPlayer.setOnFullscreenListener(new YouTubePlayer.OnFullscreenListener() {

                            @Override
                            public void onFullscreen(boolean _isFullScreen) {
                                fullScreen = _isFullScreen;
                                VideoPlayerActivity.this.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
                                if (!fullScreen) {
                                    videoPlayer.setFullscreen(false);
                                    VideoPlayerActivity.this.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
                                }
                            }
                        });
                        videoPlayer.loadVideo(video_id);
                    } else {
                        VideoPlayerActivity.this.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
                    }
                }

                @Override
                public void onInitializationFailure(YouTubePlayer.Provider provider, YouTubeInitializationResult youTubeInitializationResult) {
                    if (youTubeInitializationResult.isUserRecoverableError()) {
                        youTubeInitializationResult.getErrorDialog(VideoPlayerActivity.this, RECOVERY_REQUEST).show();
                    } else {
                        String error = String.format(("Youtube player error"), youTubeInitializationResult.toString());
                        Toast.makeText(VideoPlayerActivity.this, error, Toast.LENGTH_LONG).show();
                    }
                }
            });

            FragmentManager fragmentManager = VideoPlayerActivity.this.getSupportFragmentManager();
            android.support.v4.app.FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
            fragmentTransaction.replace(R.id.youtube_view, mYoutubePlayerFragment);
            fragmentTransaction.commit();

        }catch (NullPointerException ex){
		ex.printStackTrace();
        }