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POApplication crashes on rotation without stackTrace
 

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    <p>I'm having a very strange problem with my app, which consists of an Activity and 2 Fragments (android.support.v4.app.Fragment).</p> <p>The problem is when I rotate my tablet : the app crashes right away.</p> <p>A few days before, everything was working fine, but I had to change packages name, that threw a few errors but I manage to correct them. Problem appeared right after that, but I just can't find where is the error. Here is the Logcat I get right after the app is destroyed, restarted, resumed and created :</p> <pre><code>10-08 17:00:14.930: D/dalvikvm(18155): GC_CONCURRENT freed 394K, 8% free 7792K/8455K, paused 1ms+4ms 10-08 17:00:14.930: D/AndroidRuntime(18155): Shutting down VM 10-08 17:00:14.930: W/dalvikvm(18155): threadid=1: thread exiting with uncaught exception (group=0x40bee1f8) 10-08 17:00:14.938: E/AndroidRuntime(18155): FATAL EXCEPTION: main 10-08 17:00:14.938: E/AndroidRuntime(18155): java.lang.IllegalStateException: No activity 10-08 17:00:14.938: E/AndroidRuntime(18155): at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1070) 10-08 17:00:14.938: E/AndroidRuntime(18155): at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1065) 10-08 17:00:14.938: E/AndroidRuntime(18155): at android.support.v4.app.FragmentManagerImpl.dispatchResume(FragmentManager.java:1854) 10-08 17:00:14.938: E/AndroidRuntime(18155): at android.support.v4.app.FragmentActivity.onResumeFragments(FragmentActivity.java:431) 10-08 17:00:14.938: E/AndroidRuntime(18155): at android.support.v4.app.FragmentActivity$1.handleMessage(FragmentActivity.java:90) 10-08 17:00:14.938: E/AndroidRuntime(18155): at android.os.Handler.dispatchMessage(Handler.java:99) 10-08 17:00:14.938: E/AndroidRuntime(18155): at android.os.Looper.loop(Looper.java:137) 10-08 17:00:14.938: E/AndroidRuntime(18155): at android.app.ActivityThread.main(ActivityThread.java:4514) 10-08 17:00:14.938: E/AndroidRuntime(18155): at java.lang.reflect.Method.invokeNative(Native Method) 10-08 17:00:14.938: E/AndroidRuntime(18155): at java.lang.reflect.Method.invoke(Method.java:511) 10-08 17:00:14.938: E/AndroidRuntime(18155): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:790) 10-08 17:00:14.938: E/AndroidRuntime(18155): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:557) 10-08 17:00:14.938: E/AndroidRuntime(18155): at dalvik.system.NativeStart.main(Native Method) </code></pre> <p>The problem comes from FragmentManager but why, I don't know, as I don't have any details. I tried a solution i found on this site to get more info, by catching uncaught exception, but the result i got was the same Logcat repeated again and again until some kind of out of memory error happened(too many strings in the logcat).</p> <p>My Activity's layout is the following one, it works well with android lifecycle, but not with screen rotation :</p> <pre><code>&lt;LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="horizontal" android:id = "@+id/mainview" tools:context=".MyActivity" &gt; &lt;fragment android:id="@+id/missionFragment" android:layout_width="350dip" android:layout_height="match_parent" android:layout_marginTop="?android:attr/actionBarSize" android:name="com.xxx.xxx.MissionFragment"&gt; &lt;/fragment&gt; &lt;fragment android:id="@+id/mapFragment" android:layout_width="match_parent" android:layout_height="match_parent" android:name="com.xxx.xxx.MapFragment"&gt; &lt;/fragment&gt; &lt;/LinearLayout&gt; </code></pre> <p>Manifest is right there :</p> <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt; &lt;manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.xxx.xxx" android:versionCode="1" android:versionName="1.0" &gt; &lt;uses-sdk android:minSdkVersion="11" /&gt; &lt;uses-permission android:name="android.permission.INTERNET" /&gt; &lt;uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" /&gt; &lt;uses-permission android:name="android.permission.ACCESS_MOCK_LOCATION" /&gt; &lt;uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" /&gt; &lt;uses-permission android:name="android.permission.RECORD_AUDIO" /&gt; &lt;uses-permission android:name="android.permission.READ_CONTACTS" /&gt; &lt;uses-feature android:glEsVersion="0x00020000" android:required="true" /&gt; &lt;application android:icon="@drawable/logo" android:label="@string/app_name" &gt; &lt;activity android:name=".MySIGActivity" android:label="@string/app_name" android:windowSoftInputMode="stateHidden" &gt; &lt;intent-filter&gt; &lt;action android:name="android.intent.action.MAIN" /&gt; &lt;category android:name="android.intent.category.LAUNCHER" /&gt; &lt;/intent-filter&gt; &lt;/activity&gt; &lt;/application&gt; &lt;/manifest&gt; </code></pre> <p>If anyone has any idea on where would the error come, on which android lifecycle method, that would be welcomed!</p> <p>Thanks. </p> <p><strong>UPDATE 1.1:</strong> Here is onCreate method of my main Activity :</p> <pre><code>@Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); context = getApplicationContext(); currentEtape = 1; // Set up the action bar. final ActionBar actionBar = getActionBar(); actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_STANDARD); // Désactiver l'affichage du titre de l'application et son icône actionBar.setDisplayShowHomeEnabled(true); actionBar.setDisplayShowTitleEnabled(true); setContentView(R.layout.main); SharedPreferences prefs = getPreferences(0); trackingGPS = prefs.getBoolean("trackingGPS", false); if(trackingGPS){ TextView viewTrackingActive = (TextView)findViewById(R.id.textview_notif_tracking); viewTrackingActive.setText(this.getString(R.string.active)); viewTrackingActive.setTextColor(Color.parseColor("#99CC00")); } else{ TextView viewTrackingDesactive = (TextView)findViewById(R.id.textview_notif_tracking); viewTrackingDesactive.setText(this.getString(R.string.desactive)); viewTrackingDesactive.setTextColor(Color.parseColor("#CC0000")); } // No interaction with Fragment or Activity classes in these methods instanciateLayersDialog(); instanciateBasemapDialog(); } </code></pre> <p>And onResume method : </p> <pre><code>public void onResume(){ super.onResume(); SharedPreferences prefs = getPreferences(0); trackingGPS = prefs.getBoolean("trackingGPS", false); System.out.println("activity resume"); } </code></pre>
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    1. COYou're not putting any info of your FragmentActivity, that should help. Specifically OnCreate and onResume. Anyways, I've had very frustrating similar problems: one was with memory leak; in the emulator I was getting leap error message on screen rotation but not on a htc desire, for instance. Second, some methods of android.support.v4.app.FragmentManager collide with android.FragmentManager and thus when copying pasting in a project without v4 support, there are this kind of error. Have you checked which you are using? Try ysing fully qualified names and put some code
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    2. COThanks for the quick answer. I am using FramentManager from v4 support, I double checked and there is no reference to basic FragmentManager... I hoped the problme could come from there but it's not. I'll update my post to add onCreate and OnResume.
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    3. COI think the first you posted is onCreate, right? Both say onResume. In that case have you tried in different devices Or at least in different AVDs? I'm just guessing, this "No Activity" thrown as an IllegalStateException ..
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