我想在每个ListView
项中存储一些数据(比方说ID),稍后在clickItem
监听器上检索它。
如果我创建自己的适配器,我知道如何做到这一点。但是,如果我使用SimpleAdapter
?
答案 0 :(得分:2)
如果不覆盖至少getView()
,您将无法使用每个适配器的视图回收器设置标记。
但是,您只需传递一个自定义布局,其中TextView的可见性设置为GONE
或INVISIBLE
,并绑定地图列表(List<Map<String, ?>>
)中的数据。稍后您可以在OnItemClickListener中轻松获取此TextView。
答案 1 :(得分:0)
我认为如果你想通过像这样的标签唯一识别imageview,这将有助于你
//add this in your getview() method
ImageView imageView = new ImageView(_context);
imageView.setTag(1);
然后在listview的/ imageView上点击检查它的标签
listview.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,
long arg3) {
Tag = (Integer) arg1.getTag();
} }
答案 2 :(得分:0)
SimpleAdapter中有一个方法。它叫做ViewBinder。尝试在“SimpleAdapter adapter = new SimpleAdapter(this,Maps,R.layout.search,from,to);”和“setListAdapter(adapter);”之前立即包含此代码(在onCreate方法中)。
@Override
public void onCreate(Bundle savedInstanceState) {
//...
String[] from = new String[] {"ONE", "TWO", "THREE", "FOUR", "FIVE", "SIX", "SEVEN"};
int[] to = new int[] { R.id.textView_1, R.id.textView_2, R.id.textView_3, R.id.textView_4, R.id.textView_5, R.id.textView_6, R.id.textView_7};
SimpleAdapter adapter = new SimpleAdapter(this, Maps, R.layout.search, from, to);
SimpleAdapter.ViewBinder binder = new SimpleAdapter.ViewBinder() {
@Override
public boolean setViewValue(View view, Object object, String value) {
System.out.println("view= "+view);
System.out.println("view.toString()= "+ view.toString());
System.out.println("view.getId()= "+ view.getId()); //The return value will be decimal (not hexadecimal). You can have this value as a global string for later use.
System.out.println("view.getVisibility()= "+ view.getVisibility());
System.out.println("view.equals((TextView) view.findViewById(R.id. textView_5))= "+ view.equals((TextView) view.findViewById(R.id.textView_5)));
if (view.equals((TextView) view.findViewById(R.id.textView_5)))
{
TextView textView_five = (TextView) view.findViewById(R.id. textView_5);
//Change color/answer/etc for textView_5
}
//OR
if (view instanceof TextView) {
//Do stuff
return true;
}
return false;
}
};
adapter.setViewBinder(binder);
setListAdapter(adapter);
}//End of onCreate
将为每个R.id.textView_1,R.id.textView_2,R.id.textView_3,R.id.textView_4,R.id.textView_5,R.id.textView_6,R.id调用setViewValue方法。你在“适配器”中的textView_7。每次View /每次正在绘制上述R.id中的一个时,将调用setViewValue方法。
然后,当用户单击其中一个ListView项并且您想要更改它时,请覆盖onListItemClick方法。
@Override
public void onListItemClick(ListView l, View v, int position, long id) {
super.onListItemClick(l, v, position, id);
if (v.equals((TextView) v.findViewById(R.id.textView_5)))
{
TextView textView_five = (TextView) v.findViewById(R.id. textView_5);
textView_five.setText(“stuff”);
//Change color/answer/etc for textView_5
}
}