I noticed something very interesting. I have in my app the option to open the phone's gallery and the device asks what app to use, there I click on the gray area away from the dialog and saw this issue. I noticed how my activity goes from onPause, onSaveInstanceState back to onResume, it doesn't happen to visit onCreateView. I am doing transactions at onResume. So what I ended up doing is setting a flag being negated onPause, but being true onCreateView. if the flag is true onResume then do onCommit, otherwise commitAllowingStateLoss. I could go on and waste so much time but I wanted to check the lifecycle. I have a device which is sdkversion 23, and I don't get this issue, but I have another one which is 21, and there I see it.

如果你试图在你的片段活动的onSaveInstanceState()被调用后执行片段转换，就会发生这样的异常。

发生这种情况的一个原因是，当一个活动停止时，如果你让一个AsyncTask(或线程)运行。

调用onSaveInstanceState()后的任何转换都可能丢失，如果系统回收活动的资源并稍后重新创建它。

谢谢@gunar，但我认为有更好的方法。

医生说:

*如果您提交的单个事务没有修改 *碎片回栈，强烈考虑使用 * {@link FragmentTransaction#commitNow()}代替。这有助于避免 *当应用程序中的其他代码未提交时，会产生不必要的副作用 *需要不同时间的事务。 ＊ * @return如果有任何待处理事务则返回true *执行。 * / executePendingTransactions();

所以使用commitNow替换:

fragmentTransaction.commit();
FragmentManager.executePendingTransactions()

当用户旋转屏幕以便加载与新方向相关的资源时，onSaveInstance将被调用。

有可能这个用户旋转了屏幕，然后按了后退按钮(因为也有可能这个用户在使用你的应用程序时摸不着他们的手机)

I noticed something very interesting. I have in my app the option to open the phone's gallery and the device asks what app to use, there I click on the gray area away from the dialog and saw this issue. I noticed how my activity goes from onPause, onSaveInstanceState back to onResume, it doesn't happen to visit onCreateView. I am doing transactions at onResume. So what I ended up doing is setting a flag being negated onPause, but being true onCreateView. if the flag is true onResume then do onCommit, otherwise commitAllowingStateLoss. I could go on and waste so much time but I wanted to check the lifecycle. I have a device which is sdkversion 23, and I don't get this issue, but I have another one which is 21, and there I see it.

我有同样的问题，得到IllegalStateException，但替换所有调用commit()与commitAllowingStateLoss()没有帮助。

罪魁祸首是调用DialogFragment.show()。

我用

try {
    dialog.show(transaction, "blah blah");
}
catch(IllegalStateException e) {
    return;
}

这样就成功了。好吧，我没有展示对话，但在这种情况下，这是可以的。

这是我的应用程序中唯一一个我第一次调用FragmentManager.beginTransaction()但从未调用commit()的地方，所以当我寻找“commit()”时，我没有找到它。

有趣的是，用户从未离开该应用。相反，出现的AdMob插页广告才是罪魁祸首。