How to set prompt value on setSelection() on Spinner in Android

问题

I am making for spinner controls with fragment of multiple and first fragment show spinner properly and after then second fragment call then i set on default spinner not set plz help me, thanks in advance

String[] strArraySpinner = { "Existing Customer ?", "New Customer ?" };
    mSpinner.setOnItemSelectedListener(new OnItemSelectedListener() {

        @Override
        public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
            if (mSpinner.getSelectedItem().toString().equalsIgnoreCase(strArraySpinner[0])) {
                Toast toast = Toast.makeText(mContext, "Item= " + mSpinner.getSelectedItem().toString(), Toast.LENGTH_SHORT);
                toast.setGravity(Gravity.CENTER, 0, 0);
                toast.show();
            } else if (mSpinner.getSelectedItem().toString().equalsIgnoreCase(strArraySpinner[1])) {
                Toast toast = Toast.makeText(mContext, "Item= " + mSpinner.getSelectedItem().toString(), Toast.LENGTH_SHORT);
                toast.setGravity(Gravity.CENTER, 0, 0);
                toast.show();
            }  
        }

        @Override
        public void onNothingSelected(AdapterView<?> arg0) {
        }
    });

And second fragment calls when i m selection method on spinner call and this is not working,

mSpinner.setSelection();  // here i m set on default spinner with prompt

回答1:

I found for my self solution as mSpinner.setSelection(); method remove and set again spinner of adapter calling,

mSpinner.setAdapter(new SpinnerBaseAdapter(mContext, strArraySpinner);

This is working fine and change for each an every items inside of dropdown and get the results.

来源：https://stackoverflow.com/questions/17991756/how-to-set-prompt-value-on-setselection-on-spinner-in-android