我的应用崩溃并给了我以下追踪：
05-08 08:49:15.228: E/AndroidRuntime(1022): FATAL EXCEPTION: main
05-08 08:49:15.228: E/AndroidRuntime(1022): java.lang.IllegalStateException: Activity has been destroyed
05-08 08:49:15.228: E/AndroidRuntime(1022): at android.support.v4.app.FragmentManagerImpl.enqueueAction(FragmentManager.java:1365)
05-08 08:49:15.228: E/AndroidRuntime(1022): at android.support.v4.app.BackStackRecord.commitInternal(BackStackRecord.java:595)
05-08 08:49:15.228: E/AndroidRuntime(1022): at android.support.v4.app.BackStackRecord.commitAllowingStateLoss(BackStackRecord.java:578)
05-08 08:49:15.228: E/AndroidRuntime(1022): at android.support.v4.app.FragmentStatePagerAdapter.finishUpdate(FragmentStatePagerAdapter.java:161)
05-08 08:49:15.228: E/AndroidRuntime(1022): at com.automation.standards.VerticalViewPager.populate(VerticalViewPager.java:965)
05-08 08:49:15.228: E/AndroidRuntime(1022): at com.automation.standards.VerticalViewPager.populate(VerticalViewPager.java:811)
05-08 08:49:15.228: E/AndroidRuntime(1022): at com.automation.standards.VerticalViewPager.setAdapter(VerticalViewPager.java:334)
05-08 08:49:15.228: E/AndroidRuntime(1022): at com.automation.isolace.Lighting.assign_vertical_gangs_swipping(Lighting.java:505)
05-08 08:49:15.228: E/AndroidRuntime(1022): at com.automation.isolace.Lighting.select_room(Lighting.java:403)
05-08 08:49:15.228: E/AndroidRuntime(1022): at com.automation.isolace.Lighting$11.onClick(Lighting.java:351)
05-08 08:49:15.228: E/AndroidRuntime(1022): at android.view.View.performClick(View.java:4084)
05-08 08:49:15.228: E/AndroidRuntime(1022): at android.view.View$PerformClick.run(View.java:16966)
05-08 08:49:15.228: E/AndroidRuntime(1022): at android.os.Handler.handleCallback(Handler.java:615)
05-08 08:49:15.228: E/AndroidRuntime(1022): at android.os.Handler.dispatchMessage(Handler.java:92)
05-08 08:49:15.228: E/AndroidRuntime(1022): at android.os.Looper.loop(Looper.java:137)
05-08 08:49:15.228: E/AndroidRuntime(1022): at android.app.ActivityThread.main(ActivityThread.java:4745)
05-08 08:49:15.228: E/AndroidRuntime(1022): at java.lang.reflect.Method.invokeNative(Native Method)
05-08 08:49:15.228: E/AndroidRuntime(1022): at java.lang.reflect.Method.invoke(Method.java:511)
05-08 08:49:15.228: E/AndroidRuntime(1022): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)
05-08 08:49:15.228: E/AndroidRuntime(1022): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
05-08 08:49:15.228: E/AndroidRuntime(1022): at dalvik.system.NativeStart.main(Native Method)
关键是我无法处理 Activity Destroy 事件，因为Activity没有调用onDestroy()方法而被销毁，我认为这是因为我重写了onDestroy方法但是它没有经过它，我也查看了isDestroyed()输出，但奇怪的是它甚至没有给我true，尽管我把线条让活动在try-ctach崩溃了阻止，并在catch块中打印isDestroyed（这可能意味着该行本身就是使活动崩溃的那一行），这是应用程序崩溃的代码区域：
List<Fragment> temp_fragments = fragments; // list of fragments to add to a VerticalViewPager and return it through pageAdapter
TabAdapter2 = new LightVerticalPageAdapter(super.getSupportFragmentManager(), temp_fragments);
Tab2 = (VerticalViewPager) SomeFragment.views.findViewById(R.id.vertical_pager);// "SomeFragment" is the fragment that contains the VerticalPager and the "views" var is the var that stores Fragmrnt view when hitting fragment onViewCreated at the first time
Tab2.setAdapter(TabAdapter2); // HERE IS WHERE THE APP CRASHES AND NOT CALLS ACTIVITY onDestroy()