ListView - Problem - Wo ist der Fehler?

[badkeks]

[COLOR=Red]03-28 19:50:11.564: ERROR/AndroidRuntime(814): Uncaught handler: thread main exiting due to uncaught exception
03-28 19:50:11.583: ERROR/AndroidRuntime(814): java.lang.RuntimeException: Unable to start activity ComponentInfo{de.tomsterminplaner/de.tomsterminplaner.TerminNavigation}: java.lang.NullPointerException
03-28 19:50:11.583: ERROR/AndroidRuntime(814):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2401)
03-28 19:50:11.583: ERROR/AndroidRuntime(814):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2417)
03-28 19:50:11.583: ERROR/AndroidRuntime(814):     at android.app.ActivityThread.access$2100(ActivityThread.java:116)
03-28 19:50:11.583: ERROR/AndroidRuntime(814):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1794)
03-28 19:50:11.583: ERROR/AndroidRuntime(814):     at android.os.Handler.dispatchMessage(Handler.java:99)
03-28 19:50:11.583: ERROR/AndroidRuntime(814):     at android.os.Looper.loop(Looper.java:123)
03-28 19:50:11.583: ERROR/AndroidRuntime(814):     at android.app.ActivityThread.main(ActivityThread.java:4203)
03-28 19:50:11.583: ERROR/AndroidRuntime(814):     at java.lang.reflect.Method.invokeNative(Native Method)
03-28 19:50:11.583: ERROR/AndroidRuntime(814):     at java.lang.reflect.Method.invoke(Method.java:521)
03-28 19:50:11.583: ERROR/AndroidRuntime(814):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:791)
03-28 19:50:11.583: ERROR/AndroidRuntime(814):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:549)
03-28 19:50:11.583: ERROR/AndroidRuntime(814):     at dalvik.system.NativeStart.main(Native Method)
03-28 19:50:11.583: ERROR/AndroidRuntime(814): Caused by: java.lang.NullPointerException
03-28 19:50:11.583: ERROR/AndroidRuntime(814):     at de.tomsterminplaner.TerminNavigation.onCreate(TerminNavigation.java:32)
03-28 19:50:11.583: ERROR/AndroidRuntime(814):     at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1123)
03-28 19:50:11.583: ERROR/AndroidRuntime(814):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2364)
03-28 19:50:11.583: ERROR/AndroidRuntime(814):     ... 11 more[/COLOR]

public class TerminNavigation extends Activity {
    
        private ListView lv1;
        private String lv_arr[]={"Test1","Test2","Test3","Test4"};

    
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.navigation);
        
        lv1 = (ListView)findViewById(R.id.ListView01);
        // By using setAdpater method in listview we an add string array in list.
        lv1.setAdapter(new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1 , lv_arr));
}
}

Ich versteh nicht ganz woher dieser Moderation: unerwünschter Ausdruck! Null Pointer kommt... sieht da jemand vielleicht was auf anhieb..?!?

 

[swordi]

naja in zeile 32 ist die npe


nimm dir die zeile heraus

teile einzelne elemente auf und schau nach welches null ist.

 

[garak]

[COLOR=Red]Caused by: java.lang.NullPointerException
03-28 19:50:11.583: ERROR/AndroidRuntime(814): at de.tomsterminplaner.TerminNavigation.onCreate([B]TerminNavigation.java:32[/B])
[/COLOR]

sieht da jemand vielleicht was auf anhieb..?!?

In Zeile 32 deines Quellcodes.