Question

好的 - 我在我的项目中使用Android Studio 3.0和YouTube API版本3。我已将库/ jar文件添加到项目中（通过此链接）。该项目编译。

这是我无法弄清楚的奇怪之处：当我运行应用程序并选择视频时，应用程序显示“初始化YouTube播放器时出错”这种情况发生在设备和模拟器上。

我查看了IDE，我查看了logcat，我发现这是IDE本身的错误消息：

我也在IDE的上半部分看到了这一点：

我做错了什么，如何修复它以便我们可以在选择时播放YouTube视频？

我在此处添加了我的YouTube活动文件代码：

import android.media.MediaPlayer;
import android.os.Bundle;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.Toast;
import android.widget.VideoView;

import com.google.android.youtube.player.YouTubeBaseActivity;
import com.google.android.youtube.player.YouTubeInitializationResult;
import com.google.android.youtube.player.YouTubePlayer;
import com.google.android.youtube.player.YouTubePlayerView;


public class YouTubePlaybackOverlayActivity extends YouTubeBaseActivity implements YouTubePlayer.OnInitializedListener {

    private static String ytUrl;
    public String TAG = YouTubePlaybackOverlayActivity.class.getSimpleName();

    public VideoView mVideoView;

    public LeanbackPlaybackState mPlaybackState = LeanbackPlaybackState.IDLE;

    public static final String API_KEY = "XXXXXXXXXXXXXXXXXXXX";

    private int mPosition = 0;
    private long mStartTimeMillis;
    private long mDuration = -1;
    /**
     * ATTENTION: This was auto-generated to implement the App Indexing API.
     * See https://g.co/AppIndexing/AndroidStudio for more information.
     */
    //private GoogleApiClient client;

    @Override
    public void onStart() {
        super.onStart();

//        // ATTENTION: This was auto-generated to implement the App Indexing API.
//        // See https://g.co/AppIndexing/AndroidStudio for more information.
//        client.connect();
//        Action viewAction = Action.newAction(
//                Action.TYPE_VIEW, // TODO: choose an action type.
//                "PlaybackOverlay Page", // TODO: Define a title for the content shown.
//                // TODO: If you have web page content that matches this app activity's content,
//                // make sure this auto-generated web page URL is correct.
//                // Otherwise, set the URL to null.
//                Uri.parse("http://host/path"),
//                // TODO: Make sure this auto-generated app deep link URI is correct.
//                Uri.parse("android-app://software.blackstone.sunnahstreamtv/http/host/path")
//        );
//        AppIndex.AppIndexApi.start(client, viewAction);
    }

    @Override
    public void onStop() {
        super.onStop();

//        // ATTENTION: This was auto-generated to implement the App Indexing API.
//        // See https://g.co/AppIndexing/AndroidStudio for more information.
//        Action viewAction = Action.newAction(
//                Action.TYPE_VIEW, // TODO: choose an action type.
//                "PlaybackOverlay Page", // TODO: Define a title for the content shown.
//                // TODO: If you have web page content that matches this app activity's content,
//                // make sure this auto-generated web page URL is correct.
//                // Otherwise, set the URL to null.
//                Uri.parse("http://host/path"),
//                // TODO: Make sure this auto-generated app deep link URI is correct.
//                Uri.parse("android-app://software.blackstone.sunnahstreamtv/http/host/path")
//        );
//        AppIndex.AppIndexApi.end(client, viewAction);
//        client.disconnect();
    }

    /*
     * List of various states that we can be in
     */
    public enum LeanbackPlaybackState {
        PLAYING, PAUSED, IDLE
    }

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        /** attaching layout xml **/
        //setContentView(R.layout.nabawi_video);
        //setContentView(R.layout.activity_playback_overlay);
        setContentView(R.layout.video_playback);

        /** Initializing YouTube player view **/
        YouTubePlayerView youTubePlayerView = (YouTubePlayerView) findViewById(R.id.youtube_player);
        youTubePlayerView.initialize(API_KEY, this);
        // ATTENTION: This was auto-generated to implement the App Indexing API.
        // See https://g.co/AppIndexing/AndroidStudio for more information.
        //client = new GoogleApiClient.Builder(this).addApi(AppIndex.API).build();
    }


//    @Override
//    protected void onCreate(Bundle savedInstanceState) {
//        super.onCreate(savedInstanceState);
//        setContentView(R.layout.activity_playback_overlay);
//
//        loadViews();
//    }

    @Override
    public void onDestroy() {
        stopPlayback();
        super.onDestroy();
    }

    private void loadViews() {
        mVideoView = (VideoView) findViewById(R.id.youtube_player);
        mVideoView.setFocusable(false);
        mVideoView.setFocusableInTouchMode(false);

        Movie movie = (Movie) getIntent().getSerializableExtra(DetailsActivity.MOVIE);
        //setVideoPath(movie.getVideoUrl());
        setVideoPath(movie.getyTubeID());
        ytUrl = movie.getyTubeID();
    }

    public void setVideoPath(String videoUrl) {
        setPosition(0);
        mVideoView.setVideoPath(videoUrl);
        mStartTimeMillis = 0;
        mDuration = Utils.getDuration(videoUrl);
    }

    private void stopPlayback() {
        if (mVideoView != null) {
            mVideoView.stopPlayback();
        }
    }

    private void setPosition(int position) {
        if (position > mDuration) {
            mPosition = (int) mDuration;
        } else if (position < 0) {
            mPosition = 0;
            mStartTimeMillis = System.currentTimeMillis();
        } else {
            mPosition = position;
        }
        mStartTimeMillis = System.currentTimeMillis();
        Log.d(TAG, "position set to " + mPosition);
    }

    public int getPosition() {
        return mPosition;
    }

    public void setPlaybackState(LeanbackPlaybackState playbackState) {
        this.mPlaybackState = playbackState;
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.menu_playback_overlay, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();

        //noinspection SimplifiableIfStatement
        if (id == R.id.action_settings) {
            return true;
        }

        return super.onOptionsItemSelected(item);
    }

    public void playPause(boolean doPlay) {
        if (mPlaybackState == LeanbackPlaybackState.IDLE) {
            /* Callbacks for mVideoView */
            setupCallbacks();
        }

        if (doPlay && mPlaybackState != LeanbackPlaybackState.PLAYING) {
            mPlaybackState = LeanbackPlaybackState.PLAYING;
            if (mPosition > 0) {
                mVideoView.seekTo(mPosition);
            }
            mVideoView.start();
            mStartTimeMillis = System.currentTimeMillis();
        } else {
            mPlaybackState = LeanbackPlaybackState.PAUSED;
            int timeElapsedSinceStart = (int) (System.currentTimeMillis() - mStartTimeMillis);
            setPosition(mPosition + timeElapsedSinceStart);
            mVideoView.pause();
        }
    }

    public void fastForward() {
        if (mDuration != -1) {
            // Fast forward 10 seconds.
            setPosition(mVideoView.getCurrentPosition() + (10 * 1000));
            mVideoView.seekTo(mPosition);
        }
    }

    public void rewind() {
        // rewind 10 seconds
        setPosition(mVideoView.getCurrentPosition() - (10 * 1000));
        mVideoView.seekTo(mPosition);
    }

    private void setupCallbacks() {

        mVideoView.setOnErrorListener(new MediaPlayer.OnErrorListener() {

            @Override
            public boolean onError(MediaPlayer mp, int what, int extra) {
                mVideoView.stopPlayback();
                mPlaybackState = LeanbackPlaybackState.IDLE;
                return false;
            }
        });

        mVideoView.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
            @Override
            public void onPrepared(MediaPlayer mp) {
                if (mPlaybackState == LeanbackPlaybackState.PLAYING) {
                    mVideoView.start();
                }
            }
        });

        mVideoView.setOnCompletionListener(new MediaPlayer.OnCompletionListener() {
            @Override
            public void onCompletion(MediaPlayer mp) {
                mPlaybackState = LeanbackPlaybackState.IDLE;
            }
        });
    }

    @Override
    public void onInitializationFailure(YouTubePlayer.Provider provider, YouTubeInitializationResult result) {
        Toast.makeText(this, "Failured to Initialize!", Toast.LENGTH_LONG).show();
    }

    @Override
    public void onInitializationSuccess(YouTubePlayer.Provider provider, YouTubePlayer player, boolean wasRestored) {
        /** add listeners to YouTubePlayer instance **/
        player.setPlayerStateChangeListener(playerStateChangeListener);
        player.setPlaybackEventListener(playbackEventListener);
        player.setFullscreen(true);
        player.setPlayerStyle(YouTubePlayer.PlayerStyle.CHROMELESS);
        //player.play();


        /** Start buffering **/

        for (int i = 0; i < MovieProvider.mItems.size(); i++) {
            Movie movie = (Movie) getIntent().getSerializableExtra(DetailsActivity.MOVIE);
            player.loadVideo(movie.getyTubeID());
        }

    }

    private YouTubePlayer.PlaybackEventListener playbackEventListener = new YouTubePlayer.PlaybackEventListener() {

        @Override
        public void onBuffering(boolean arg0) {
        }

        @Override
        public void onPaused() {
        }

        @Override
        public void onPlaying() {
        }

        @Override
        public void onSeekTo(int arg0) {
        }

        @Override
        public void onStopped() {
        }

    };

    private YouTubePlayer.PlayerStateChangeListener playerStateChangeListener = new YouTubePlayer.PlayerStateChangeListener() {

        @Override
        public void onAdStarted() {
        }

        @Override
        public void onError(YouTubePlayer.ErrorReason arg0) {
        }

        @Override
        public void onLoaded(String arg0) {
        }

        @Override
        public void onLoading() {
        }

        @Override
        public void onVideoEnded() {
        }

        @Override
        public void onVideoStarted() {
        }
    };
}

Answer 1

问题是项目中的corrout索引。我删除了类文件。然后我清除了缓存，重新启动了Android Studio，然后清理并重建了项目。我重新启动了Android Studio，然后重新创建了所需的类文件和布局文件，项目编译成功，一切都很好。

感谢大家的时间，建议，建议和意见。

YouTube播放器活动出错

1 个答案: