Question

我在Android应用中集成YouTube播放器时出现此错误。这一行出错 - youTubeView.initialize(Config.DEVELOPER_KEY, this);

Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'void com.google.android.youtube.player.YouTubePlayerView.initialize(java.lang.String, com.google.android.youtube.player.YouTubePlayer$OnInitializedListener)' on a null object reference

我的代码：

private static final int RECOVERY_DIALOG_REQUEST = 1;
    private YouTubePlayerView youTubeView;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_you_tube_test);
        //requestWindowFeature(Window.FEATURE_NO_TITLE);
        getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
                WindowManager.LayoutParams.FLAG_FULLSCREEN);

        setContentView(R.layout.activity_main);

        youTubeView = findViewById(R.id.youtube_view);

        // Initializing video player with developer key
        youTubeView.initialize(Config.DEVELOPER_KEY, this);
    }

    @Override
    public void onInitializationSuccess(YouTubePlayer.Provider provider, YouTubePlayer youTubePlayer, boolean b) {
        if (!b) {

            // loadVideo() will auto play video
            // Use cueVideo() method, if you don't want to play it automatically
            youTubePlayer.loadVideo(Config.YOUTUBE_VIDEO_CODE);

            // Hiding player controls
            youTubePlayer.setPlayerStyle(YouTubePlayer.PlayerStyle.CHROMELESS);
        }
    }

    @Override
    public void onInitializationFailure(YouTubePlayer.Provider provider, YouTubeInitializationResult youTubeInitializationResult) {
        if (youTubeInitializationResult.isUserRecoverableError()) {
            youTubeInitializationResult.getErrorDialog(this, RECOVERY_DIALOG_REQUEST).show();
        } else {
            Toast.makeText(this, youTubeInitializationResult.toString(), Toast.LENGTH_LONG).show();
        }
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        if (requestCode == RECOVERY_DIALOG_REQUEST) {
            // Retry initialization if user performed a recovery action
            getYouTubePlayerProvider().initialize(Config.DEVELOPER_KEY, this);
        }
    }

    private YouTubePlayer.Provider getYouTubePlayerProvider() {
        return (YouTubePlayerView) findViewById(R.id.youtube_view);
    }

Answer 1

从google api控制台获取API开发人员密钥，并在单独的类中添加密钥，如下例所示。

public class Config { private Config() {} public static final String DEVELOPER_KEY="AIzaSyAwhK2xxxxxxx-xxxxxxxxxxxE"; }

Answer 2

检查您的setContentView（R.layout.activity_you_tube_test）;

我的意思是与您的活动相关的布局可能有所不同。

YouTube播放器API集成错误NullPointerException

2 个答案: