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:
- E/AndroidRuntime(12747): Caused by: java.lang.IllegalStateException: Can not perform this action after onSaveInstanceState
- at android.support.v4.app.FragmentManagerImpl.checkStateLoss(FragmentManager.java:1314)
- at android.support.v4.app.FragmentManagerImpl.enqueueAction(FragmentManager.java:1325)
是在使用FragmentTransition的 commit方法添加一個Fragment的時候出現的,後來在官網找到了相關的
public abstract int commitAllowingStateLoss ()
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.
onSaveInstanceState方法是在該Activity即將被銷燬前調用,來保存Activity數據的,如果在保存玩狀態後
再給它添加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。