java – 无法在ListView上的自定义ArrayAdapter中获取Selected Item Index
作者:互联网
我的Android项目有问题,因为我无法使用自己的ArrayAdapter从我的List中获取选定的项目索引.我从教程中尝试了一些示例,但它们不起作用.解决办法是什么?
适配器
public class myProductAdapter extends ArrayAdapter<myProductsGroup> {
private List<myProductsGroup> productList;
private Context context;
public myProductAdapter(List<myProductsGroup> productList, Context ctx) {
super(ctx, R.layout.list_products_row, productList);
this.productList = productList;
this.context = ctx;
}
@Override
public int getCount() {
return productList.size();
}
/*
public void onClick(View v) {
int position = Integer.parseInt((String) v.getTag());
OrderFirstGridPage.setSelectedItem(position);
}
*/
public View getView(int position, View convertView, ViewGroup parent) {
if (convertView == null) {
LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = inflater.inflate(R.layout.list_products_row, parent, false);
}
TextView tv = (TextView) convertView.findViewById(R.id.title);
tv.setTag(""+position);
TextView distView = (TextView) convertView.findViewById(R.id.description);
distView.setTag(""+position);
tv.setText("aa");
return convertView;
}
}
在活动中
lv = (ListView) findViewById(R.id.listView1);
lv.setAdapter(new myProductAdapter(setupArrayProductList((ArrayList<myProduct>) ProductList), OrderFirstGridPage.this));
lv.setSelector(R.drawable.selector_for_position_list);
解决方法:
尝试使用以下代码行:
lv = (ListView) findViewById(R.id.listView1);
lv.setAdapter(new myProductAdapter(setupArrayProductList((ArrayList<myProduct>) ProductList), OrderFirstGridPage.this));
lv.setSelector(R.drawable.selector_for_position_list);
lv.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent,
View view, int position, long id) {
Log.d("My POSITION",""+position);
}
});
希望您从选定的列表视图中获得准确的位置.如果您有任何问题,请通知我.希望这会奏效.
标签:selecteditem,android,java 来源: https://codeday.me/bug/20190729/1567464.html