네비게이션 드로어에서 메뉴 아이콘을 클릭했을때 튕김 현상이 발생하면서
에러로그가 다음과 같이 출력되었습니다.
해결 방안을 알려주시면 감사하겠습니다.
public class Activity_youtube extends Fragment
implements YouTubePlayer.OnInitializedListener {
View v;
YouTubePlayerView youTubeView;
Button button;
YouTubePlayer.OnInitializedListener listener;
@Nullable
@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, Bundle savedInstanceState) {
//inflate메소드는 XML데이터를 가져와서 실제 View객체로 만드는 작업을 합니다.
v = inflater.inflate(R.layout.activity_youtube, container, false);
return v;
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
youTubeView = (YouTubePlayerView)getView().findViewById(R.id.youtube_fragment);
//리스너 등록부분
listener = new YouTubePlayer.OnInitializedListener(){
//초기화 성공시
@Override
public void onInitializationSuccess(YouTubePlayer.Provider provider, YouTubePlayer youTubePlayer, boolean b) {
youTubePlayer.loadVideo("rNnePxt7K-U");//url의 맨 뒷부분 ID값만 넣으면 됨
}
@Override
public void onInitializationFailure(YouTubePlayer.Provider provider, YouTubeInitializationResult youTubeInitializationResult) {
}
};
button.setOnClickListener(new View.OnClickListener(){
@Override
public void onClick(View view) {
//첫번째 인자는 API키값 두번째는 실행할 리스너객체를 넘겨줌
youTubeView.initialize("AIzaSyB8B5KSJKVt0sxP87VLIM91PkPWHxbhtUo",listener);
}
});
}
@Override
public void onInitializationSuccess(YouTubePlayer.Provider provider, YouTubePlayer youTubePlayer, boolean b) {
}
@Override
public void onInitializationFailure(YouTubePlayer.Provider provider, YouTubeInitializationResult youTubeInitializationResult) {
}
}
07-04 06:24:59.442 719-719/com.test.test/AndroidRuntime: FATAL EXCEPTION: main
Process: com.test.test, PID: 719
java.lang.NullPointerException: Attempt to invoke virtual method 'android.view.View android.view.View.findViewById(int)' on a null object reference
at com.test.test.Activity_youtube.onCreate(Activity_youtube.java:42)
at android.app.Fragment.performCreate(Fragment.java:2489)
at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:1237)
at android.app.FragmentManagerImpl.addAddedFragments(FragmentManager.java:2407)
at android.app.FragmentManagerImpl.executeOpsTogether(FragmentManager.java:2186)
at android.app.FragmentManagerImpl.removeRedundantOperationsAndExecute(FragmentManager.java:2142)
at android.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:2043)
at android.app.FragmentManagerImpl$1.run(FragmentManager.java:719)
at android.os.Handler.handleCallback(Handler.java:790)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:164)
at android.app.ActivityThread.main(ActivityThread.java:6494)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:438)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:807)
