Android Exception 14（Activity has been destroyed）

 1 java.lang.IllegalStateException: Activity has been destroyed
 2     at android.app.FragmentManagerImpl.enqueueAction(FragmentManager.java:1295)
 3     at android.app.BackStackRecord.commitInternal(BackStackRecord.java:552)
 4     at android.app.BackStackRecord.commit(BackStackRecord.java:536)
 5     at com.tongyan.subway.inspect.act.HistoryManageAct.createFragment(HistoryManageAct.java:1021)
 6     at com.tongyan.subway.inspect.act.HistoryManageAct.handleOtherMessage(HistoryManageAct.java:338)
 7     at com.tongyan.tfinal.MFinalActivity$MHandler.handleMessage(MFinalActivity.java:558)
 8     at android.os.Handler.dispatchMessage(Handler.java:99)
 9     at android.os.Looper.loop(Looper.java:137)
10     at android.app.ActivityThread.main(ActivityThread.java:4823)
11     at java.lang.reflect.Method.invokeNative(Native Method)
12     at java.lang.reflect.Method.invoke(Method.java:511)
13     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:787)
14     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:554)
15     at dalvik.system.NativeStart.main(Native Method)