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안녕하세요. ViewAnimator를 사용하려고하는데 기본 무언가가 누락 된 것 같습니다. 이 내가 무엇을 가지고 :ViewAnimator로 인해 NullPointerException이 발생합니다.
inFromLeftAnimation 및 outToRightAnimation 그냥 애니메이션을 처리하고 완벽하게 작동 va = new ViewAnimator(this);
va.setInAnimation(inFromLeftAnimation());
va.setOutAnimation(outToRightAnimation());
RelativeLayout stage = (RelativeLayout)findViewById(R.layout.american_stage);
va.addView(stage,0);
setContentView(va);
. 그리고 당연히 파일이 실제로 존재하는지 ...이 로그 가져 오기 :
07-13 15:45:14.515: E/AndroidRuntime(564): java.lang.RuntimeException: Unable to start activity ComponentInfo{shibby.webhunt/shibby.webhunt.ArcadeModeActivity}: java.lang.NullPointerException
07-13 15:45:14.515: E/AndroidRuntime(564): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2663)
07-13 15:45:14.515: E/AndroidRuntime(564): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679)
07-13 15:45:14.515: E/AndroidRuntime(564): at android.app.ActivityThread.access$2300(ActivityThread.java:125)
07-13 15:45:14.515: E/AndroidRuntime(564): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033)
07-13 15:45:14.515: E/AndroidRuntime(564): at android.os.Handler.dispatchMessage(Handler.java:99)
07-13 15:45:14.515: E/AndroidRuntime(564): at android.os.Looper.loop(Looper.java:123)
07-13 15:45:14.515: E/AndroidRuntime(564): at android.app.ActivityThread.main(ActivityThread.java:4627)
07-13 15:45:14.515: E/AndroidRuntime(564): at java.lang.reflect.Method.invokeNative(Native Method)
07-13 15:45:14.515: E/AndroidRuntime(564): at java.lang.reflect.Method.invoke(Method.java:521)
07-13 15:45:14.515: E/AndroidRuntime(564): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
07-13 15:45:14.515: E/AndroidRuntime(564): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
07-13 15:45:14.515: E/AndroidRuntime(564): at dalvik.system.NativeStart.main(Native Method)
07-13 15:45:14.515: E/AndroidRuntime(564): Caused by: java.lang.NullPointerException
07-13 15:45:14.515: E/AndroidRuntime(564): at android.view.ViewGroup.addView(ViewGroup.java:1815)
07-13 15:45:14.515: E/AndroidRuntime(564): at shibby.webhunt.ArcadeModeActivity.onCreate(ArcadeModeActivity.java:25)
07-13 15:45:14.515: E/AndroidRuntime(564): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
07-13 15:45:14.515: E/AndroidRuntime(564): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2627)
을 그리고 난 왜 아무 생각이 없습니다. 보기로 XML 파일을 사용할 수 있습니까? 내가보기를 직접 만들어야합니까? 당신이하려는 경우
findViewById(R.layout.american_stage);
: 당신이 null 인 뷰 (RelativeLayout stage
)를 추가하려고처럼