IllegalStateException: Can not perform this action after onSaveInstanceState

今天使用Fragment的时候，调用出现popBackStackImmediate方法出现了IllegalStateException: Can not perform this action after onSaveInstanceState，在网上了搜了很久，其中http://stackoverflow.com/questions/7575921/illegalstateexception-can-not-perform-this-action-after-onsaveinstancestate-wit应该是其中最权威的解决的方案，但试了里面的方法依然解决不了，猜想应该是我的Fragment是Fragment中的Fragment中的Fragment，也就是层层嵌套下的Fragment。

没有办法只能看源码了，通过源码我们可以发现那个异常是因为mStateSaved这个属性是true才导致的，我们只需要把mStateSaved用反射改为false就行了。

下面就解决办法的源码

try {                FragmentManager manager = getFragmentManager();                Log.e(TAG, "class " + manager.getClass());                Field field = manager.getClass().getDeclaredField("mStateSaved");                field.setAccessible(true);                field.set(manager, false);                getFragmentManager().popBackStackImmediate();            } catch (Exception e) {                e.printStackTrace();            }


当然这方法最多算个治标不治本的方法，Fragment还有很多细节是我不知道的，需要不断加强的学习，这个坑爹的方法暂时用着先吧。
                                             
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