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[英]Why am I getting this Exception when I try to remove Action Bar on my Activity?
[英]Why am I getting a crash when exiting my Activity?
当我从我的活动中退出(通过后退按钮)时,我的应用程序出现崩溃。 据我所知,这是在Android代码库中发生而不是我的,但我并不完全相信。
这是来自adb的stacktrace:
AndroidRuntime E Uncaught handler: thread main exiting due to uncaught exception
AndroidRuntime E java.lang.RuntimeException: Unable to stop activity {MyApp/MyApp.MainActivity}: java.lang.NullPointerException
AndroidRuntime E at android.app.ActivityThread.performDestroyActivity(ActivityThread.java:3097)
AndroidRuntime E at android.app.ActivityThread.handleDestroyActivity(ActivityThread.java:3159)
AndroidRuntime E at android.app.ActivityThread.access$2400(ActivityThread.java:112)
AndroidRuntime E at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1724)
AndroidRuntime E at android.os.Handler.dispatchMessage(Handler.java:99)
AndroidRuntime E at android.os.Looper.loop(Looper.java:123)
AndroidRuntime E at android.app.ActivityThread.main(ActivityThread.java:3948)
AndroidRuntime E at java.lang.reflect.Method.invokeNative(Native Method)
AndroidRuntime E at java.lang.reflect.Method.invoke(Method.java:521)
AndroidRuntime E at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:782)
AndroidRuntime E at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:540)
AndroidRuntime E at dalvik.system.NativeStart.main(Native Method)
AndroidRuntime E Caused by: java.lang.NullPointerException
AndroidRuntime E at android.app.Activity.performStop(Activity.java:3575)
AndroidRuntime E at android.app.ActivityThread.performDestroyActivity(ActivityThread.java:3092)
AndroidRuntime E ... 11 more
任何人都有任何想法/建议?
不能帮助太多,因为没有代码。 还是看着
引起:android.app.Activity.performStop的java.lang.NullPointerException(Activity.java:3575)
我刚刚查看了Activity.java
final int N = mManagedCursors.size();
for (int i=0; i<N; i++) {
ManagedCursor mc = mManagedCursors.get(i);
if (!mc.mReleased) {
mc.mCursor.deactivate(); // line 3575
mc.mReleased = true;
}
}
你确定所有游标都正确发布了吗?
在这种情况下对内部情况的极好解释: http : //www.jjoe64.com/2011/06/how-to-fix-activityperformstop.html
在调用startManagingCursor()方法之前的Activity中,您的Cursor为null。 不要让Cursor为null。
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