NullPointerException - wieder mal bei findViewById()

1private ListView listView;
2
3onCreate() {
4...
5initializeViews();
6...
7}
8
9initializeViews() {
10...
11listView = (ListView) findViewById(android.R.layout.list);
12...
13}

1<ListView
2 android:id="@id/android:list"
3 android:layout_width="fill_parent"
4 android:layout_height="wrap_content"
5 android:drawSelectorOnTop="false"
6 />

1<?xml version="1.0" encoding="utf-8"?>
2<LinearLayout
3 xmlns:android="http://schemas.android.com/apk/res/android"
4 android:orientation="horizontal"
5 android:layout_width="fill_parent"
6 android:layout_height="wrap_content"
7 android:background="@color/activity_background"
8 >
9 <ImageView
10 android:layout_width="wrap_content"
11 android:src="@drawable/blue_list_icon"
12 android:layout_height="fill_parent"
13 android:layout_marginRight="5dp">
14 </ImageView>
15
16 <TextView
17 android:id="@+id/txt_liv_item_myitem"
18 android:textAppearance="?android:attr/textAppearanceMedium"
19 android:layout_width="wrap_content"
20 android:text="TextView"
21 android:layout_height="wrap_content"
22 android:textColor="@color/txt_sum"
23 android:layout_marginRight="15dp"
24 />
25
26 <TextView
27 android:id="@+id/txt_liv_item_mytime"
28 android:textAppearance="?android:attr/textAppearanceMedium"
29 android:layout_width="wrap_content"
30 android:text="TextView"
31 android:layout_height="wrap_content"
32 android:textColor="@color/txt_sum"
33 android:layout_marginRight="15dp"
34 />
35
36 <TextView
37 android:id="@+id/txt_liv_item_filler_until"
38 android:textAppearance="?android:attr/textAppearanceMedium"
39 android:layout_width="wrap_content"
40 android:text="@string/txt_liv_item_filler_until"
41 android:layout_height="wrap_content"
42 android:textColor="@color/txt_sum"
43 android:layout_marginRight="15dp"
44 />
45
46
47 <TextView
48 android:id="@+id/txt_liv_item_time"
49 android:textAppearance="?android:attr/textAppearanceMedium"
50 android:layout_width="wrap_content"
51 android:text="TextView"
52 android:layout_height="wrap_content"
53 android:textColor="@color/txt_sum"
54 android:layout_marginRight="15dp"
55 />
56</LinearLayout>

1@Override
2 public View getView(int position, View convertView, ViewGroup parent) {
3 Log.v(TAG, "called [getView(int,View,ViewGroup)], position=" + position);
4 Log.v(TAG, "Value at position " + position + " info:\n" + values.get(position).toString());
5
6 LayoutInflater inflater = (LayoutInflater)context
7 .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
8
9 View listItem = inflater.inflate(R.layout.list_item, parent, false);
10
11 if(listItem == null) {
12 Log.e(TAG, "listeItem == null!!!"); // wird nie ausgegeben und ist somit !=NULL
13 // deswegen gehe ich davon aus, dass hier noch alles ok ist
14 }
15
16 TextView txtMyVal = (TextView) listItem.findViewById(R.id.txt_liv_item_myvalue);
17 Log.d(TAG, "Calling value at position: " + position);
18 if(tickets.get(position) == null) {
19 Log.d(TAG, "value does not exist!");// wird nie ausgegeben, daher value !=NULL
20 // hier kann der fehler also auch nicht liegen
21 }
22 if(txtLpn == null) {
23 Log.w(TAG, "could not find TextView txtMyVal "); // das wird aber ausgegeben, hier haperts also schon!
24 }
25 Log.d(TAG, "My Value: " + values.get(position).getInfo());
26
27 try {
28 txtMyVal.setText(values.get(position).getInfo());
29 } catch(Exception e) {
30 Log.e(TAG, "Got Exception while setting text on txtMyVal: " + e.toString(), e); // diese Exception wird ausgegeben!! WARUM??
31 }
32
33 return listItem;
34 }