listview fehler

1package de.GFD.bapp;
2
3import android.app.Activity;
4import android.content.Context;
5import android.view.LayoutInflater;
6import android.view.View;
7import android.view.ViewGroup;
8import android.widget.BaseAdapter;
9import android.widget.ImageView;
10import android.widget.TextView;
11
12
13
14public class news_list extends BaseAdapter {
15
16 private Activity activity;
17
18
19
20 aktien_stack anfang;
21 aktien_stack hilfe;
22
23 ViewHolder helptag;
24
25 Context context;
26
27 private static LayoutInflater inflater=null;
28
29 public news_list(Context c, Activity a) {
30 this.activity = a;
31 this.context = c;
32 this.getData();
33
34
35 news_list.inflater = (LayoutInflater)activity.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
36 }
37
38
39 public aktien_stack get_aktie_stack(){
40
41 return anfang;
42
43 }
44
45 public void getData(){
46
47 aktien_db adb = new aktien_db(this.context);
48 adb.open();
49 this.anfang = adb.getData(1);
50 adb.close();
51 this.hilfe=this.anfang;
52
53
54 }
55
56
57 public int getCount() {
58 int x = 0;
59
60 aktien_db adb = new aktien_db(this.context);
61 adb.open();
62 x = adb.getRowNumber();
63 adb.close();
64 return x;
65 }
66
67 public Object getItem(int position) {
68 return position;
69 }
70
71 public long getItemId(int position) {
72 return position;
73 }
74
75
76 public static class ViewHolder{
77
78 public TextView name;
79 public TextView stand;
80
81 public ImageView image_icon;
82
83
84 }
85
86 public View getView(int position, View convertView, ViewGroup parent) {
87 View vi=convertView;
88
89 ViewHolder holder;
90
91
92 if(convertView==null){
93
94 vi = inflater.inflate(R.layout.news_list_menue, null);
95
96 holder=new ViewHolder();
97 holder.name=(TextView)vi.findViewById(R.id.menue_news_list_name);
98 holder.stand=(TextView)vi.findViewById(R.id.menue_news_list_stand);
99
100 holder.image_icon = (ImageView)vi.findViewById(R.id.news_menue_icon);
101
102
103
104 vi.setTag(holder);
105
106 }
107 else {
108 holder=(ViewHolder)vi.getTag();}
109
110 holder.name.setText(this.hilfe.Bezeichnung);
111 holder.stand.setText(this.hilfe.standlive);
112
113 holder.image_icon.setImageResource(this.hilfe.getImageId(context , this.hilfe.icon));
114
115 vi.setId(hilfe.ID);
116 hilfe=hilfe.last;
117
118 return vi;
119 }
120
121}

107-19 07:52:52.038: D/AndroidRuntime(2616): Shutting down VM
207-19 07:52:52.038: W/dalvikvm(2616): threadid=1: thread exiting with uncaught exception (group=0xb4061180)
307-19 07:52:52.068: E/AndroidRuntime(2616): FATAL EXCEPTION: main
407-19 07:52:52.068: E/AndroidRuntime(2616): java.lang.NullPointerException
507-19 07:52:52.068: E/AndroidRuntime(2616): at de.GFD.bapp.news_list.getView(news_list.java:113)
607-19 07:52:52.068: E/AndroidRuntime(2616): at android.widget.AbsListView.obtainView(AbsListView.java:2012)
707-19 07:52:52.068: E/AndroidRuntime(2616): at android.widget.ListView.addViewAbove(ListView.java:2962)
807-19 07:52:52.068: E/AndroidRuntime(2616): at android.widget.ListView.scrollListItemsBy(ListView.java:2933)
907-19 07:52:52.068: E/AndroidRuntime(2616): at android.widget.ListView.arrowScrollImpl(ListView.java:2397)
1007-19 07:52:52.068: E/AndroidRuntime(2616): at android.widget.ListView.arrowScroll(ListView.java:2342)
1107-19 07:52:52.068: E/AndroidRuntime(2616): at android.widget.ListView.commonKey(ListView.java:2070)
1207-19 07:52:52.068: E/AndroidRuntime(2616): at android.widget.ListView.onKeyDown(ListView.java:2038)
1307-19 07:52:52.068: E/AndroidRuntime(2616): at android.view.KeyEvent.dispatch(KeyEvent.java:2551)
1407-19 07:52:52.068: E/AndroidRuntime(2616): at android.view.View.dispatchKeyEvent(View.java:5500)
1507-19 07:52:52.068: E/AndroidRuntime(2616): at android.view.ViewGroup.dispatchKeyEvent(ViewGroup.java:1242)
1607-19 07:52:52.068: E/AndroidRuntime(2616): at android.widget.ListView.dispatchKeyEvent(ListView.java:2023)
1707-19 07:52:52.068: E/AndroidRuntime(2616): at android.view.ViewGroup.dispatchKeyEvent(ViewGroup.java:1246)
1807-19 07:52:52.068: E/AndroidRuntime(2616): at android.view.ViewGroup.dispatchKeyEvent(ViewGroup.java:1246)
1907-19 07:52:52.068: E/AndroidRuntime(2616): at android.view.ViewGroup.dispatchKeyEvent(ViewGroup.java:1246)
2007-19 07:52:52.068: E/AndroidRuntime(2616): at android.view.ViewGroup.dispatchKeyEvent(ViewGroup.java:1246)
2107-19 07:52:52.068: E/AndroidRuntime(2616): at android.view.ViewGroup.dispatchKeyEvent(ViewGroup.java:1246)
2207-19 07:52:52.068: E/AndroidRuntime(2616): at android.view.ViewGroup.dispatchKeyEvent(ViewGroup.java:1246)
2307-19 07:52:52.068: E/AndroidRuntime(2616): at com.android.internal.policy.impl.PhoneWindow$DecorView.superDispatchKeyEvent(PhoneWindow.java:1879)
2407-19 07:52:52.068: E/AndroidRuntime(2616): at com.android.internal.policy.impl.PhoneWindow.superDispatchKeyEvent(PhoneWindow.java:1361)
2507-19 07:52:52.068: E/AndroidRuntime(2616): at android.app.Activity.dispatchKeyEvent(Activity.java:2324)
2607-19 07:52:52.068: E/AndroidRuntime(2616): at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchKeyEvent(PhoneWindow.java:1806)
2707-19 07:52:52.068: E/AndroidRuntime(2616): at android.view.ViewRootImpl.deliverKeyEventPostIme(ViewRootImpl.java:3327)
2807-19 07:52:52.068: E/AndroidRuntime(2616): at android.view.ViewRootImpl.handleFinishedEvent(ViewRootImpl.java:3300)
2907-19 07:52:52.068: E/AndroidRuntime(2616): at android.view.ViewRootImpl.handleMessage(ViewRootImpl.java:2460)
3007-19 07:52:52.068: E/AndroidRuntime(2616): at android.os.Handler.dispatchMessage(Handler.java:99)
3107-19 07:52:52.068: E/AndroidRuntime(2616): at android.os.Looper.loop(Looper.java:137)
3207-19 07:52:52.068: E/AndroidRuntime(2616): at android.app.ActivityThread.main(ActivityThread.java:4424)
3307-19 07:52:52.068: E/AndroidRuntime(2616): at java.lang.reflect.Method.invokeNative(Native Method)
3407-19 07:52:52.068: E/AndroidRuntime(2616): at java.lang.reflect.Method.invoke(Method.java:511)
3507-19 07:52:52.068: E/AndroidRuntime(2616): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
3607-19 07:52:52.068: E/AndroidRuntime(2616): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
3707-19 07:52:52.068: E/AndroidRuntime(2616): at dalvik.system.NativeStart.main(Native Method)

1@Override
2public View getView(int position, View contentView, ViewGroup viewGroup) {
3
4 View view = null;
5 ViewHolder viewHolder = null;
6
7 if (contentView == null) {
8 view = layoutInflater.inflate(<...>, null);
9
10 if (view != null) {
11 viewHolder = new ViewHolder();
12 viewHolder.imageView = (MyImageView) view.findViewById(<...>);
13 // ...
14 view.setTag(viewHolder);
15 }
16 } else {
17 view = contentView;
18 viewHolder = (ViewHolder) contentView.getTag();
19 }
20
21 if (viewHolder != null) {
22 if (viewHolder.imageViewFolder != null) {
23 viewHolder.imageView.setImageDrawable(<...>);
24 // ...
25 }
26 }
27
28 return view;
29}