[英]Android: Spinner setSelection by Tag
I define BaseAdapter to fill Spinner with records from SQL I setTag for item in Spinner to equal Record ID in SQL database. 我定义了BaseAdapter来为Spinner填充来自SQL的setTag中的记录,以便Spinner中的项目与SQL数据库中的Record ID相等。
public static class Refueling_Adapter extends BaseAdapter {
private Context vContext;
private List<Banziny.Refuel> mRefuelingList;
//private int mListing;
public Base_Adapter(Context vContext, List<AppTest.basic> mBaseList) {
this.vContext = vContext;
this.mBaseList = mBaseList;
}
@Override
public int getCount() {
return mBaseList.size();
}
@Override
public Object getItem(int position) {
return mBaseList.get(position);
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
convertView = View.inflate(vContext, R.layout.item_base, null);
convertView.setTag(mBaseList.get(position).getBase_id());
TextView Basename = (TextView) convertView.findViewById(R.id.txt_Base_name);
Basename.setText(mBaseList.get(position).getBase_name());
return convertView;
}
}
As you see I set Tag for spinner item to equal SQL record ID. 如您所见,我将spinner项的Tag设置为等于SQL记录ID。 Now I just need to know how to setSelected for Spinner using Tag which equals SQL Record ID. 现在我只需要知道如何使用Tag等于SQL记录ID来为Spinner设置SetSelected。
int baseidtoselect = mBaseList.get(0).getBase_ID();
this id retrieved from database and i need to find tag in spinner. 从数据库中检索到这个id,我需要在spinner中找到标签。
You can use this function 您可以使用此功能
public static void selectItemByTag(Spinner spinner, int tag) {
Refueling_Adapter adapter = (Refueling_Adapter) spinner.getAdapter(); // it is Refueling_Adapter because your Spinner use Refueling_Adapter
for (int position = 0; position < adapter.getCount(); position++) {
if(((YourObjectModel)adapter.getItem(position)).getBase_id() == tag) { // YourObjectModel here is AppTest.basic
spinner.setSelection(position);
return;
}
}
}
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