如何在ListView中使用Override SimpleCursorAdapter将OnClickLitsener设置为按钮
如何在ListView中使用Override SimpleCursorAdapter将OnClickLitsener设置为按钮
提问于 2011-12-06 23:09:27
我现在有一个listview，使用simplecursoradapter从数据库中获取数据，我从数据库中查询一个链接，并将其分配给列表每行中的一个按钮，我正在重写simplecursoradapter类，以便为该按钮设置onclicklistener，但我的代码无法工作，谁能告诉我问题出在哪里？
这是我的适配器：
public class ChannelAdapter extends SimpleCursorAdapter{
private LayoutInflater mInflater;
private List<ChannelPoster> items;
private Context mContext;
private String dblink;
public ChannelAdapter(Context context, int layout, Cursor c, String[] from,
int[] to) {
super(context, layout, c, from, to);
// TODO Auto-generated constructor stub
}
@Override
public View getView(int position,View convertView,ViewGroup par)
{
ViewHolder holder;
if(convertView == null)
{
convertView = mInflater.inflate(R.layout.channelview, null);
holder = new ViewHolder();
holder.image = (ImageView) convertView.findViewById(R.id.poster);
holder.text = (TextView) convertView.findViewById(R.id.channel);
holder.button = (ImageButton) convertView.findViewById(R.id.douban);
convertView.setTag(holder);
}
else
{
holder = (ViewHolder) convertView.getTag();
}
ChannelPoster tmpN=(ChannelPoster)items.get(position);
holder.text.setText(tmpN.getChannel());
holder.image.setImageResource(tmpN.getPoster());
holder.button.setOnClickListener(new ImageButton.OnClickListener()
{
public void onClick(View v)
{
// TODO Auto-generated method stub
Intent intent = new Intent();
intent.setClass(mContext, Doubanframe.class);
Bundle bunde = new Bundle();
bunde.putString("dblink",dblink);
intent.putExtras(bunde);
mContext.startActivity(intent);
}
});
return convertView;
}
private class ViewHolder
{
ImageView image;
TextView text;
ImageButton button;
}
}下面是我填充列表视图的方式：
mDB = new ChannelDB(this);
String[] columns = {mDB.KEY_ID, mDB.KEY_POSTER, mDB.KEY_CHANNEL, mDB.KEY_PATH, mDB.KEY_DBLINK};
String table = mDB.channelS_TABLE;
c = mDB.getHandle().query(table, columns, null, null, null, null, null);
startManagingCursor(c);
SimpleCursorAdapter adapter = new SimpleCursorAdapter(this,
R.layout.channelview,
c,
new String[] {mDB.KEY_POSTER, mDB.KEY_CHANNEL, mDB.KEY_DBLINK},
new int[] { R.id.poster, R.id.channel, R.id.douban});
channellist.setAdapter(adapter);LogCat
12-06 15:07:01.093: INFO/System.out(1257): debugger has settled (1375)
12-06 15:07:02.172: DEBUG/dalvikvm(1257): GC freed 884 objects / 61568 bytes in 118ms
12-06 15:07:03.029: DEBUG/Splash(1257): table exist
12-06 15:07:03.359: WARN/InputManagerService(59): Got RemoteException sending setActive(false) notification to pid 1225 uid 10028
12-06 15:07:03.903: INFO/ActivityManager(59): Displayed activity com.appkon.hdtvs/.Splash: 7947 ms (total 7947 ms)
12-06 15:07:04.920: INFO/ActivityManager(59): Starting activity: Intent { cmp=com.appkon.hdtvs/.HDtvs }
12-06 15:07:06.001: INFO/System.out(1257): resolveUri failed on bad bitmap uri: http://movie.douban.com/subject/5372374/
12-06 15:07:06.190: INFO/System.out(1257): resolveUri failed on bad bitmap uri: http://movie.douban.com/subject/3190880/
12-06 15:07:06.450: INFO/System.out(1257): resolveUri failed on bad bitmap uri: http://movie.douban.com/subject/3990470/
12-06 15:07:06.720: DEBUG/dalvikvm(1257): GC freed 546 objects / 27992 bytes in 107ms
12-06 15:07:06.780: INFO/System.out(1257): resolveUri failed on bad bitmap uri: http://movie.douban.com/subject/4804079/
12-06 15:07:06.931: INFO/System.out(1257): resolveUri failed on bad bitmap uri: http://movie.douban.com/subject/6557005/
12-06 15:07:07.111: INFO/System.out(1257): resolveUri failed on bad bitmap uri: http://movie.douban.com/subject/4317617/
12-06 15:07:07.270: INFO/System.out(1257): resolveUri failed on bad bitmap uri: http://movie.douban.com/subject/6436783/
12-06 15:07:07.410: INFO/System.out(1257): resolveUri failed on bad bitmap uri: http://movie.douban.com/subject/2156528/
12-06 15:07:07.590: INFO/System.out(1257): resolveUri failed on bad bitmap uri: http://movie.douban.com/subject/6778677/回答 1
Stack Overflow用户
发布于 2012-01-31 02:19:32
@Override
public View getView(int position, View convertView, ViewGroup parent) {
View view = convertView;
if (view == null)
view = LayoutInflater.from(DummyListViewProjectActivity.this).inflate(R.layout.list_item, parent, false);
TextView tv = (TextView) view.findViewById(R.id.text);
tv.setText(adapterItems.get(position));
Button bt = (Button) view.findViewById(R.id.button);
bt.setText(adapterItems.get(position));
bt.setTag(adapterItems.get(position));
bt.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
Toast.makeText(DummyListViewProjectActivity.this, v.getTag().toString(), Toast.LENGTH_SHORT).show();
}
});
return view;
}它对我很有效，确实显示了不同价值的吐司。你能在没有支架的情况下试一试吗？
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原文链接：
https://stackoverflow.com/questions/8402099
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