小编ign*_*ivs的帖子

我有一个MenuActivity，在MenuActivity我有一个SeguridadMenuFrament，在SeguridadMenuFrament我有SeguridadFragment。在SeguridadFrament我需要的工具YoutubePlayer。

在我的 fragment_seguridad.xml

    <?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    xmlns:app="http://schemas.android.com/apk/res-auto">

    <TextView
    android:id="@+id/tvTitle"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:text="@string/TR_CARACTERISTICAS"
    android:textSize="@dimen/text_14"
    android:layout_marginTop="20dp"/>

    <TextView
    android:id="@+id/tvCaracteristicas"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:textSize="@dimen/text_12"
        app:layout_constraintTop_toBottomOf="@id/tvTitle"
    android:layout_marginTop="20dp"/>

    <fragment
        android:name="com.google.android.youtube.player.YouTubePlayerSupportFragment"
        android:id="@+id/youtubePF"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="20dp"
        app:layout_constraintTop_toBottomOf="@id/tvCaracteristicas"/>


</android.support.constraint.ConstraintLayout>

在SeguridadFragment.java中

public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
    rootView = inflater.inflate(R.layout.fragment_seguridad, container, false);

    mYoutubePlayerFragment = new YouTubePlayerSupportFragment();
    mYoutubePlayerFragment.initialize(YoutubeDeveloperKey, new YouTubePlayer.OnInitializedListener() {
        @Override
        public void onInitializationSuccess(YouTubePlayer.Provider provider, YouTubePlayer youTubePlayer, boolean b) {
            if (!b) {
                youTubePlayer.cueVideo("NMwE93GQcKs"); …