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此代码是“繁忙编码指南”Android示例之一。章节使用列表，部分：动态演示。在代码中使用选择
作者正在尝试使用称为行的替代布局制作ListView。 ImageView和TextView的名称是图标和标签。
但是，我不明白选择什么用。关于这段代码，函数onListItemClick的用法是什么。
public class DynamicDemo extends ListActivity {
TextView selection;
private static final String[] items={"lorem", "ipsum", "dolor","sit", "amet", "consectetuer", "adipiscing", "elit", "morbi", "vel", "ligula", "vitae", "arcu", "aliquet", "mollis", "etiam", "vel", "erat", "placerat", "ante", "porttitor", "sodales", "pellentesque", "augue", "purus"};
@Override
public void onCreate(Bundle icicle) {
super.onCreate(icicle);
setContentView(R.layout.main);
setListAdapter(new IconicAdapter());
selection=(TextView)findViewById(R.id.selection);
}
public void onListItemClick(ListView parent, View v,
int position, long id) {
selection.setText(items[position]);
}
class IconicAdapter extends ArrayAdapter<String> {
IconicAdapter() {
super(DynamicDemo.this, R.layout.row, R.id.label, items);
}
public View getView(int position, View convertView, ViewGroup parent) {
View row=super.getView(position, convertView, parent);
ImageView icon=(ImageView)row.findViewById(R.id.icon);
if (items[position].length()>4) {
icon.setImageResource(R.drawable.delete);
}
else {
icon.setImageResource(R.drawable.ok);
}
return(row);
}
}
}