Java.lang.IllegalStateException Activity has been destroyed

12-07 11:13:14.030 13836-13836/com.xxx.xxx.android E/error.out: 检测到严重错误，程序即将退出java.lang.RuntimeException: Unable to destroy activity {com.xxx.xxx.android/com.xxx.xxx.android.activity.chat.ChatActivity}: java.lang.IllegalStateException: Activity has been destroyedat android.app.ActivityThread.performDestroyActivity(ActivityThread.java:3271)at android.app.ActivityThread.handleDestroyActivity(ActivityThread.java:3289)at android.app.ActivityThread.access$1200(ActivityThread.java:134)at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1280)at android.os.Handler.dispatchMessage(Handler.java:99)at android.os.Looper.loop(Looper.java:154)at android.app.ActivityThread.main(ActivityThread.java:4624)at java.lang.reflect.Method.invokeNative(Native Method)at java.lang.reflect.Method.invoke(Method.java:511)at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:809)at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:576)at dalvik.system.NativeStart.main(Native Method)Caused by: java.lang.IllegalStateException: Activity has been destroyedat android.app.FragmentManagerImpl.enqueueAction(FragmentManager.java:1286)at android.app.BackStackRecord.commitInternal(BackStackRecord.java:541)at android.app.BackStackRecord.commitAllowingStateLoss(BackStackRecord.java:529)at com.bumptech.glide.manager.RequestManagerRetriever.getRequestManagerFragment(RequestManagerRetriever.java:159)at com.bumptech.glide.manager.RequestManagerRetriever.fragmentGet(RequestManagerRetriever.java:168)at com.bumptech.glide.manager.RequestManagerRetriever.get(RequestManagerRetriever.java:127)at com.bumptech.glide.Glide.with(Glide.java:632)at com.xxx.xxx.android.activity.BaseActivity.onDestroy(BaseActivity.java:399)at com.xxx.xxx.android.activity.socketservice.SocketServiceActivity.onDestroy(SocketServiceActivity.java:157)at com.xxx.xxx.android.activity.chat.ChatActivity.onDestroy(ChatActivity.java:3607)at android.app.Activity.performDestroy(Activity.java:4643)at android.app.Instrumentation.callActivityOnDestroy(Instrumentation.java:1081)at android.app.ActivityThread.performDestroyActivity(ActivityThread.java:3258)at android.app.ActivityThread.handleDestroyActivity(ActivityThread.java:3289)?at android.app.ActivityThread.access$1200(ActivityThread.java:134)?at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1280)?at android.os.Handler.dispatchMessage(Handler.java:99)?at android.os.Looper.loop(Looper.java:154)?at android.app.ActivityThread.main(ActivityThread.java:4624)?at java.lang.reflect.Method.invokeNative(Native Method)?at java.lang.reflect.Method.invoke(Method.java:511)?at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:809)?at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:576)?at dalvik.system.NativeStart.main(Native Method)?

出现的原因

This seems to be a bug in the newly added support for nested fragments. Basically, the child FragmentManager ends up with a broken internal state when it is detached from the activity. A short-term workaround that fixed it for me is to add the following to onDetach() of every Fragment which you call getChildFragmentManager() on:

解决方法

stackoverflow上面给的解决办法是重写onDetach方法，测试行不通

@Override
public void onDetach() {super.onDetach();try {Field childFragmentManager = Fragment.class.getDeclaredField("mChildFragmentManager");childFragmentManager.setAccessible(true);childFragmentManager.set(this, null);} catch (NoSuchFieldException e) {throw new RuntimeException(e);} catch (IllegalAccessException e) {throw new RuntimeException(e);}
}

在使用该Viewpager的Fragment中，重写方法onDestroyView()，测试有效

@Override
public void onDestroyView() {
super.onDestroyView();
try {Field childFragmentManager = Fragment.class.getDeclaredField("mChildFragmentManager");childFragmentManager.setAccessible(true);childFragmentManager.set(this, null);} catch (NoSuchFieldException e) {throw new RuntimeException(e);} catch (IllegalAccessException e) {throw new RuntimeException(e);}
}

为什么在onDetach行不通呢，因为按照Activity跟Fragment的生命周期图来看，onDetach阶段Fragment已经与Activity脱离关系——即Fragment持有的Activity对象已被置null，而onDestroyView阶段Fragment中仍然保留与Activity之间的关系,此时Fragment持有的Activity对象仍然有效。

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