Android 错误:IllegalStateException: Can not perform this action after onSaveInstanceState
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今天做Fragment切换、状态保存功能的时候,出现了这个错误:
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)
定位发现是在调用FragmentTransition的commit()方法时发生的该问题,于是搜了下相关解答,得知:我使用的 commit方法是在Activity的onSaveInstanceState()之后调用的,这样会出错,因为onSaveInstanceState方法是在该Activity即将被销毁前调用,来保存Activity数据的,如果在保存玩状态后再给它添加Fragment就会出错。
解决办法:把commit()方法替换成 commitAllowingStateLoss()就行了,从名字上就能看出,这种提交是允许状态值丢失的。到此问题得到完美解决,值的传递是你自己控制的,其效果是一样的。
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