空指针YouTubePlayerSupportFragment

Question

我对“YouTubePlayerSupportFragment”

有疑问

我在这里收到错误：

`YouTubePlayerSupportFragment youTubePlayerFragment = (YouTubePlayerSupportFragment) getActivity().getSupportFragmentManager().findFragmentById(R.id.youtubeplayerview);`

以下是完整代码： 我试图改变一些事情，现在我有一点可理解的错误。 如果我发现它，我会发布solcuón。

更新代码11/06/2015，我收到新的错误：

5429-5429/com.onpocket.activamutua E/AndroidRuntime﹕ FATAL EXCEPTION: main
    java.lang.NullPointerException
            at com.google.android.youtube.player.YouTubePlayerSupportFragment.onStart(Unknown Source)

代码：

public class Activity_demo extends YouTubePlayerSupportFragment /*implements YouTubePlayer.OnInitializedListener */{


    private static final int RECOVERY_DIALOG_REQUEST = 10;
    public static final String API_KEY = "AIzaSyBHZjt1vrkjuwCp4YqTsADNQVDf6KvAXr0";
    private String VIDEO_ID = "c_eHTMhEsHU";

    JustifiedTextView tv1;
    ConfigActiva cfg;

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,Bundle savedInstanceState) {
    View rootView = inflater.inflate(R.layout.activity_own, container, false);
    TypefaceUtil.overrideFont(getActivity(), "SERIF", ConfigActiva.nameFontStatic);
    ConfigActiva.languageCustom(ConfigActiva.defaultLanguageForce, getActivity());
    init(rootView);    
    return rootView;
}

    public void init(View vRoot){

    //YouTubePlayerView youTubeView = (YouTubePlayerView) getActivity().findViewById(R.id.youtubeplayerview);
    //youTubeView.initialize(API_KEY, this);
    YouTubePlayerSupportFragment youTubePlayerFragment = (YouTubePlayerSupportFragment) getChildFragmentManager().findFragmentById(R.id.youtubeplayerview);
    //YouTubePlayerSupportFragment youTubePlayerFragment = (YouTubePlayerSupportFragment) getActivity().getSupportFragmentManager().findFragmentById(R.id.youtubeplayerview);
    //youTubePlayerFragment.initialize(API_KEY, this);

    youTubePlayerFragment.initialize(API_KEY, new YouTubePlayer.OnInitializedListener() {
            @Override
            public void onInitializationSuccess(YouTubePlayer.Provider provider, YouTubePlayer youTubePlayer, boolean wasRestored) {
                if (!wasRestored) {
                    youTubePlayer.cueVideo(VIDEO_ID);
                }
            }

        @Override
        public void onInitializationFailure(YouTubePlayer.Provider provider, YouTubeInitializationResult errorReason) {
            if (errorReason.isUserRecoverableError()) {
                errorReason.getErrorDialog(getActivity(), RECOVERY_DIALOG_REQUEST).show();
            } else {
                String errorMessage = String.format("YouTube Error (%1$s)", errorReason.toString());
                Toast.makeText(getActivity(), errorMessage, Toast.LENGTH_LONG).show();
            }
        }
    });
    }
/*  @Override
    public void onInitializationFailure(YouTubePlayer.Provider provider,
                                        YouTubeInitializationResult errorReason) {
        if (errorReason.isUserRecoverableError()) {
            errorReason.getErrorDialog(getActivity(), RECOVERY_DIALOG_REQUEST).show();
        } else {
            String errorMessage = String.format("YouTube Error (%1$s)",errorReason.toString());
            Toast.makeText(getActivity(), errorMessage, Toast.LENGTH_LONG).show();
        }

    }

    @Override
    public void onInitializationSuccess(YouTubePlayer.Provider provider,YouTubePlayer player, boolean wasRestored) {
        if (!wasRestored) {
            player.cueVideo(VIDEO_ID);
        }
    }*/

我的XML

<fragment 
    android:name="com.google.android.youtube.player.YouTubePlayerSupportFragment"
    android:id="@+id/youtubeplayerview"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"/>

使用此行Works，但不加载视频：已更新11/06/2015 22:21

YouTubePlayerSupportFragment youTubePlayerFragment = YouTubePlayerSupportFragment.newInstance();

Answer 1

您必须动态添加片段，因为：Nested fragments 只需添加一个带id的容器，并在Transaction.replace中使用此id。还可以使用onCreateView进行充气和构建布局。之后，从视图参数中查找onViewCreated（视图视图，...）中的视图，它将使代码更清晰。