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POIllegalStateException on FragmentManager
 

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    <p>My app keeps to report this issue on many Android platforms (4.1, 4.0.4, 2.3.6...). But I could not reproduce this issue on my phone. I have searched for this issue by Google, but the stack trace seems not the same as my.</p> <p>Does someone know how the issue happening? And how to prevent it? Or how can I reproduce this error? Thank you.</p> <p>Stack trace:</p> <pre><code>java.lang.IllegalStateException: Can not perform this action after onSaveInstanceState at android.support.v4.app.FragmentManagerImpl.checkStateLoss(FragmentManager.java:1327) at android.support.v4.app.FragmentManagerImpl.enqueueAction(FragmentManager.java:1338) at android.support.v4.app.BackStackRecord.commitInternal(BackStackRecord.java:595) at android.support.v4.app.BackStackRecord.commit(BackStackRecord.java:574) at android.support.v4.app.FragmentTabHost.onAttachedToWindow(FragmentTabHost.java:278) at android.view.View.dispatchAttachedToWindow(View.java:12064) at android.view.ViewGroup.dispatchAttachedToWindow(ViewGroup.java:2707) at android.view.ViewGroup.dispatchAttachedToWindow(ViewGroup.java:2714) at android.view.ViewGroup.dispatchAttachedToWindow(ViewGroup.java:2714) at android.view.ViewGroup.dispatchAttachedToWindow(ViewGroup.java:2714) at android.view.ViewGroup.dispatchAttachedToWindow(ViewGroup.java:2714) at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1339) at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1131) at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:4611) at android.view.Choreographer$CallbackRecord.run(Choreographer.java:725) at android.view.Choreographer.doCallbacks(Choreographer.java:555) at android.view.Choreographer.doFrame(Choreographer.java:525) at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:711) at android.os.Handler.handleCallback(Handler.java:615) at android.os.Handler.dispatchMessage(Handler.java:92) at android.os.Looper.loop(Looper.java:137) at android.app.ActivityThread.main(ActivityThread.java:4898) at java.lang.reflect.Method.invokeNative(Native Method) at java.lang.reflect.Method.invoke(Method.java:511) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1008) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:775) at dalvik.system.NativeStart.main(Native Method) </code></pre> <p>-------------------- Edit --------------------</p> <p>To Jonathan:</p> <p>I have two fragments. And only one fragment overwrites the <code>onPause</code> callback, and the codes are as below. And I don't overwrite the other callbacks after <code>onPause</code>. Another callback I overwrite is the <code>onResume</code> callback, the codes are as below too.</p> <p><strong>Fragment:</strong></p> <pre><code>@Override public void onPause() { super.onPause(); if (mView instanceof MyView) { MyView my = (MyView) mView; my.onPause(); } } @Override public void onResume() { super.onResume(); if (mView instanceof MyView) { MyView my = (MyView) mView; my.onResume(); } } </code></pre> <p><strong>MyView:</strong></p> <pre><code>public void onPause() { pause = true; } public void onResume() { pause = false; if (mDialog != null &amp;&amp; mDialog.isShowing()) { mDialog.dismiss(); mDialog = null; } } </code></pre> <p>I also trace the codes of <code>FragmentActivity</code>/<code>FragmentManager</code>, it seems if the <code>onAttachedToWindow()</code> be called before <code>onPostResume()</code>, then the issue will happen. Is it possible that the <code>onAttachedToWindow()</code> be called before <code>onPostResume()</code>?</p>
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    1. USuser2581991
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    1. COAre you doing anything in your callbacks for onPause() or anything later in the Fragment lifecycle?
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    2. COMost likely an issue caused by screen rotation and `onSaveInstanceState`. Check `FragmentTabHost.onAttachedToWindow` line: 278. Also, if you can provide the code for the `FragmentTabHost`.
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    3. CO@LuckyMe FragmentTabHost is part of the Android source, not something this user implemented.
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