Apps Weird NullPointerException with Custom Adapter

[Erates]

Hey,

I'm trying to write some code so i can get a listview witch checkboxes. I wrote my own Adapter for that, but it gives me a NullPointerException when i open the activity the second time.

@Override
	public View getView(int position, View view, ViewGroup parent) {
		view = inflator.inflate(R.layout.activity_pregame_list_item, parent, false);
		view.findViewById(R.id.pregameListItemCBReady).setOnClickListener(this);

		PreGamePlayerInfo data = (PreGamePlayerInfo) getItem(position);

		TextView tv = (TextView) view.findViewById(R.id.pregameListItemTVName);
		tv.setText(data.getName());

		CheckBox cb = (CheckBox) view.findViewById(R.id.pregameListItemCBReady);
		if (data.getName().equals(prefs.getString(context.getResources().getString(R.string.prefKeyUsername), ""))) {
			cb.setEnabled(true);
		} else {
			cb.setEnabled(false);
		}

		cb.setChecked(data.isReady());
		cb.setTag(data);

		return view;
	}

This is the errormessage:

03-23 22:10:37.132: E/AndroidRuntime(14090): java.lang.NullPointerException
03-23 22:10:37.132: E/AndroidRuntime(14090): 	at hoskens.rens.internship.arc_defense.adapters.PreGamePlayerInfoAdapter.getView(PreGamePlayerInfoAdapter.java:65)
03-23 22:10:37.132: E/AndroidRuntime(14090): 	at android.widget.AbsListView.obtainView(AbsListView.java:2263)
03-23 22:10:37.132: E/AndroidRuntime(14090): 	at android.widget.ListView.measureHeightOfChildren(ListView.java:1263)
03-23 22:10:37.132: E/AndroidRuntime(14090): 	at android.widget.ListView.onMeasure(ListView.java:1175)
03-23 22:10:37.132: E/AndroidRuntime(14090): 	at android.view.View.measure(View.java:16497)
03-23 22:10:37.132: E/AndroidRuntime(14090): 	at android.widget.RelativeLayout.measureChild(RelativeLayout.java:689)
03-23 22:10:37.132: E/AndroidRuntime(14090): 	at android.widget.RelativeLayout.onMeasure(RelativeLayout.java:473)
03-23 22:10:37.132: E/AndroidRuntime(14090): 	at android.view.View.measure(View.java:16497)
03-23 22:10:37.132: E/AndroidRuntime(14090): 	at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5125)
03-23 22:10:37.132: E/AndroidRuntime(14090): 	at android.widget.FrameLayout.onMeasure(FrameLayout.java:310)
03-23 22:10:37.132: E/AndroidRuntime(14090): 	at android.view.View.measure(View.java:16497)
03-23 22:10:37.132: E/AndroidRuntime(14090): 	at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5125)
03-23 22:10:37.132: E/AndroidRuntime(14090): 	at com.android.internal.widget.ActionBarOverlayLayout.onMeasure(ActionBarOverlayLayout.java:327)
03-23 22:10:37.132: E/AndroidRuntime(14090): 	at android.view.View.measure(View.java:16497)
03-23 22:10:37.132: E/AndroidRuntime(14090): 	at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5125)
03-23 22:10:37.132: E/AndroidRuntime(14090): 	at android.widget.FrameLayout.onMeasure(FrameLayout.java:310)
03-23 22:10:37.132: E/AndroidRuntime(14090): 	at com.android.internal.policy.impl.PhoneWindow$DecorView.onMeasure(PhoneWindow.java:2291)
03-23 22:10:37.132: E/AndroidRuntime(14090): 	at android.view.View.measure(View.java:16497)
03-23 22:10:37.132: E/AndroidRuntime(14090): 	at android.view.ViewRootImpl.performMeasure(ViewRootImpl.java:1916)
03-23 22:10:37.132: E/AndroidRuntime(14090): 	at android.view.ViewRootImpl.measureHierarchy(ViewRootImpl.java:1113)
03-23 22:10:37.132: E/AndroidRuntime(14090): 	at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1295)
03-23 22:10:37.132: E/AndroidRuntime(14090): 	at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1000)
03-23 22:10:37.132: E/AndroidRuntime(14090): 	at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:5670)
03-23 22:10:37.132: E/AndroidRuntime(14090): 	at android.view.Choreographer$CallbackRecord.run(Choreographer.java:761)
03-23 22:10:37.132: E/AndroidRuntime(14090): 	at android.view.Choreographer.doCallbacks(Choreographer.java:574)
03-23 22:10:37.132: E/AndroidRuntime(14090): 	at android.view.Choreographer.doFrame(Choreographer.java:544)
03-23 22:10:37.132: E/AndroidRuntime(14090): 	at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:747)
03-23 22:10:37.132: E/AndroidRuntime(14090): 	at android.os.Handler.handleCallback(Handler.java:733)
03-23 22:10:37.132: E/AndroidRuntime(14090): 	at android.os.Handler.dispatchMessage(Handler.java:95)
03-23 22:10:37.132: E/AndroidRuntime(14090): 	at android.os.Looper.loop(Looper.java:136)
03-23 22:10:37.132: E/AndroidRuntime(14090): 	at android.app.ActivityThread.main(ActivityThread.java:5017)
03-23 22:10:37.132: E/AndroidRuntime(14090): 	at java.lang.reflect.Method.invokeNative(Native Method)
03-23 22:10:37.132: E/AndroidRuntime(14090): 	at java.lang.reflect.Method.invoke(Method.java:515)
03-23 22:10:37.132: E/AndroidRuntime(14090): 	at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
03-23 22:10:37.132: E/AndroidRuntime(14090): 	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
03-23 22:10:37.132: E/AndroidRuntime(14090): 	at dalvik.system.NativeStart.main(Native Method)

The line it says the NPE is is this one:

if (data.getName().equals(prefs.getString(context.getResources().getString(R.string.prefKeyUsername), ""))) {

Although, I can't find out what the problem is. I've been googling for a day now.

Anybody got a idea?

 

[aartsapp]

If you don't have access to a debugger; just declare all variables to figure out where the NPE is. It's probably that "data" isn't populated with the "name" field; or that your context is missing.

This often happens when you think the NPE is being cause by the variable you're trying to compare with, but it's higher up in the object hierarchy.