Android ListPreference schaltet sich meine Anwendung nach unten

Question

Hallo Jungs, ich habe ein Problem mit meinem Android App gegenüber: i eine Einstellung Aktivität meiner App und wenn sie auf der Liste Präferenz Klicken auf die App hält hier die XML der Voreinstellungen:

<PreferenceCategory android:title="Settings"> 

    <EditTextPreference 
     android:selectAllOnFocus="true" 
     android:title="Player Name" 
     android:key="userName" 
     android:defaultValue="default" 
     android:summary="Enter Player Name " /> 
    <ListPreference 
     android:key="listPref" 
     android:dialogTitle="Choose a a number" 
     android:entries="@array/life_list" 
     android:entryValues="@array/life_list" 
     android:title="Number of attempts" /> 
</PreferenceCategory> 

hier ist das @ Array/life_list:

<?version="1.0" encoding="utf-8"?> 
<resources> 
<integer-array name="life_list"> 
    <item>1</item> 
    <item>2</item> 
    <item>3</item> 
</integer-array> 

hier ist der Debug-Bericht:

012.351.

D/AndroidRuntime: Shutting down VM 
E/AndroidRuntime: FATAL EXCEPTION: main 
        Process: binarypet.millionaire, PID: 20571 
       java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String java.lang.Object.toString()' on a null object reference 
        at android.widget.ArrayAdapter.createViewFromResource(ArrayAdapter.java:394) 
        at android.widget.ArrayAdapter.getView(ArrayAdapter.java:362) 
        at android.widget.AbsListView.obtainView(AbsListView.java:2828) 
        at android.widget.ListView.measureHeightOfChildren(ListView.java:1290) 
        at android.widget.ListView.onMeasure(ListView.java:1202) 
        at android.view.View.measure(View.java:18646) 
        at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5832) 
        at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1435) 
        at android.widget.LinearLayout.measureVertical(LinearLayout.java:721) 
        at android.widget.LinearLayout.onMeasure(LinearLayout.java:612) 
        at android.view.View.measure(View.java:18646) 
        at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5832) 
        at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1435) 
        at android.widget.LinearLayout.measureVertical(LinearLayout.java:721) 
        at android.widget.LinearLayout.onMeasure(LinearLayout.java:612) 
        at android.view.View.measure(View.java:18646) 
        at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5832) 
        at android.widget.FrameLayout.onMeasure(FrameLayout.java:430) 
        at android.view.View.measure(View.java:18646) 
        at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5832) 
        at android.widget.FrameLayout.onMeasure(FrameLayout.java:430) 
        at android.view.View.measure(View.java:18646) 
        at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5832) 
        at android.widget.FrameLayout.onMeasure(FrameLayout.java:430) 
        at com.android.internal.policy.impl.PhoneWindow$DecorView.onMeasure(PhoneWindow.java:3012) 
        at android.view.View.measure(View.java:18646) 
        at android.view.ViewRootImpl.performMeasure(ViewRootImpl.java:2310) 
        at android.view.ViewRootImpl.measureHierarchy(ViewRootImpl.java:1329) 
        at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1597) 
        at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1239) 
        at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:6752) 
        at android.view.Choreographer$CallbackRecord.run(Choreographer.java:777) 
        at android.view.Choreographer.doCallbacks(Choreographer.java:590) 
        at android.view.Choreographer.doFrame(Choreographer.java:560) 
        at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:763) 
        at android.os.Handler.handleCallback(Handler.java:739) 
        at android.os.Handler.dispatchMessage(Handler.java:95) 
        at android.os.Looper.loop(Looper.java:145) 
        at android.app.ActivityThread.main(ActivityThread.java:6145) 
        at java.lang.reflect.Method.invoke(Native Method) 
        at java.lang.reflect.Method.invoke(Method.java:372) 
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1399) 
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1194) 
I/Process: Sending signal. PID: 20571 SIG: 9 

Answer 1

das Problem war, in:

<?version="1.0" encoding="utf-8"?> 
<resources> 
    <integer-array name="life_list"> // string-array 
    <item>1</item> 
    <item>2</item> 
    <item>3</item> 
    </integer-array> // string-array 

i integer zu bespannen und das Problem geändert wurde