1. 程式人生 > >解決IllegalStateException Can not perform this action after o

解決IllegalStateException Can not perform this action after o

分享一下我老師大神的人工智慧教程!零基礎,通俗易懂!http://blog.csdn.net/jiangjunshow

也歡迎大家轉載本篇文章。分享知識,造福人民,實現我們中華民族偉大復興!

               

本文出自:

http://blog.csdn.net/ranxiedao/article/details/8214936

今天使用Fragment的時候,出現了這個錯誤 IllegalStateException: Can not perform this action after onSaveInstanceState:

  1. E/AndroidRuntime(12747): Caused by: java.lang.IllegalStateException: Can not perform this action after onSaveInstanceState  
  2.     at android.support.v4.app.FragmentManagerImpl.checkStateLoss(FragmentManager.java:1314
    )  
  3.     at android.support.v4.app.FragmentManagerImpl.enqueueAction(FragmentManager.java:1325)  

是在使用FragmentTransition的 commit方法新增一個Fragment的時候出現的,後來在官網找到了相關的

說明:http://developer.android.com/reference/android/app/FragmentTransaction.html#commitAllowingStateLoss()

public abstract int commitAllowingStateLoss ()

Added in  API level 11

Like commit() but allows the commit to be executed after an activity's state is saved. This is dangerous because the commit can be lost if the activity needs to later be restored from its state, so this should only be used for cases where it is okay for the UI state to change unexpectedly on the user.

大致意思是說我使用的 commit方法是在Activity的onSaveInstanceState()之後呼叫的,這樣會出錯,因為

onSaveInstanceState方法是在該Activity即將被銷燬前呼叫,來儲存Activity資料的,如果在儲存玩狀態後

再給它新增Fragment就會出錯。解決辦法就是把commit()方法替換成 commitAllowingStateLoss()就行

了,其效果是一樣的。


           

給我老師的人工智慧教程打call!http://blog.csdn.net/jiangjunshow

這裡寫圖片描述