ListView erscheint nur UNTERHALB des LinearLayout fuer Buttons

1<?xml version="1.0" encoding="utf-8"?>
2<!-- activity_edit_kriterien.xml V.2014-01-18
3 fuer EditKriterienActivity -->
4<LinearLayout
5 xmlns:android="http_//schemas.android.com/apk/res/android"
6 xmlns:tools="http_//schemas.android.com/tools"
7 android:orientation="vertical"
8 android:layout_width="match_parent"
9 android:layout_height="match_parent"
10 tools:context=".EditKriterienActivity" >
11
12 <ListView android:id="@+id/editKriterienListView"
13 android:layout_width="match_parent"
14 android:layout_height="match_parent" >
15 </ListView>
16
17 <LinearLayout
18 android:orientation="horizontal"
19 android:gravity="top"
20 android:layout_width="wrap_content"
21 android:layout_height="wrap_content" >
22
23 <Button
24 android:id="@+id/endButton"
25 style="?android:attr/buttonStyleSmall"
26 android:layout_width="80dp"
27 android:layout_height="36dp"
28 android:text="@string/end" >
29 </Button>
30
31 <Button
32 android:id="@+id/cancelButton"
33 style="?android:attr/buttonStyleSmall"
34 android:layout_width="80dp"
35 android:layout_height="36dp"
36 android:text="@string/cancel" >
37 </Button>
38
39 <Button
40 android:id="@+id/backButton"
41 style="?android:attr/buttonStyleSmall"
42 android:layout_width="80dp"
43 android:layout_height="36dp"
44 android:text="@string/back" >
45 </Button>
46
47 <Button
48 android:id="@+id/okButton"
49 style="?android:attr/buttonStyleSmall"
50 android:layout_width="80dp"
51 android:layout_height="36dp"
52 android:text="@android:string/ok" >
53 </Button>
54
55 </LinearLayout>
56
57</LinearLayout>