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私のコードは正常に動作していましたが、私はYoutubeBaseActivityを使ってJavaクラスを拡張しましたが、何らかの理由でAppCompatActivityが使用され、NPEを取得しています。YouTubePlayerSupportFragment nullポインタの例外
この私がNPEを取得していますライン、されています
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<fragment
android:name="com.google.android.youtube.player.YouTubePlayerFragment"
android:id="@+id/youtube_view"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
</LinearLayout>
youTubePlayerSupportFragment.initialize(ApiKey.YOUTUBE_API_KEY, this);
YouTubeViewActivity.javaここでは、完全なコードがyoutube_view_activity.xml
public class YouTubeViewActivity extends AppCompatActivity implements
YouTubePlayer.OnInitializedListener {
private static final int RECOVERY_DIALOG_REQUEST = 1;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.youtube_view_activity);
YouTubePlayerSupportFragment youTubePlayerSupportFragment =
(YouTubePlayerSupportFragment) getSupportFragmentManager().findFragmentById(R.id.youtube_view);
// at below line I am getting NPE
youTubePlayerSupportFragment.initialize(ApiKey.YOUTUBE_API_KEY, this);
}
@Override
public void onInitializationFailure(YouTubePlayer.Provider provider,
YouTubeInitializationResult errorReason) {
if (errorReason.isUserRecoverableError()) {
errorReason.getErrorDialog(this, RECOVERY_DIALOG_REQUEST).show();
} else {
String errorMessage = String.format(
getString(R.string.error_player), errorReason.toString());
Toast.makeText(this, errorMessage, Toast.LENGTH_LONG).show();
}
}
@Override
public void onInitializationSuccess(YouTubePlayer.Provider provider,
YouTubePlayer player, boolean wasRestored) {
if (!wasRestored) {
player.loadVideo("pRpeEdMmmQ0"); // cue, load
}
}
@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(ApiKey.YOUTUBE_API_KEY, this);
}
}
private YouTubePlayer.Provider getYouTubePlayerProvider() {
return (YouTubePlayerView) findViewById(R.id.youtube_view);
}
}
です
を参照してくださいログイン：
FATAL EXCEPTION: main
Process: com.akoscz.youtube, PID: 13033
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.akoscz.youtube/com.akoscz.youtube.YouTubeViewActivity}: java.lang.NullPointerException
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2338)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2390)
at android.app.ActivityThread.access$800(ActivityThread.java:151)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1321)
at android.os.Handler.dispatchMessage(Handler.java:110)
at android.os.Looper.loop(Looper.java:193)
at android.app.ActivityThread.main(ActivityThread.java:5299)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:829)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:645)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.NullPointerException
at com.akoscz.youtube.YouTubeViewActivity.onCreate(YouTubeViewActivity.java:28)
at android.app.Activity.performCreate(Activity.java:5264)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1088)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2302)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2390)
at android.app.ActivityThread.access$800(ActivityThread.java:151)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1321)
at android.os.Handler.dispatchMessage(Handler.java:110)
at android.os.Looper.loop(Looper.java:193)
at android.app.ActivityThread.main(ActivityThread.java:5299)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:829)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:645)
at dalvik.system.NativeStart.main(Native Method)