[android] spinner onItemSelected和可见性

Question

I try to make editText and TextView visibility triggered by select item on spinner. I use the code below but it does not work. The item should be gone at first time and when i select item on the spinner editText and TextView will show up. What happen is The editText and TextView show up at the first time and when i select another item the editText and TextView won't gone.

ArrayAdapter<String> adapter2 = new ArrayAdapter<String>
    (this, android.R.layout.simple_spinner_dropdown_item, SP_KMA);
    Spiner_KMA.setAdapter(adapter2);

    Spiner_KMA.setOnItemSelectedListener(new OnItemSelectedListener() {

        @Override
        public void onItemSelected(AdapterView<?> arg0, View arg1,
                int arg2, long arg3) {
            // TODO Auto-generated method stub
            String select = arg0.getSelectedItem().toString();
            if(select.equalsIgnoreCase("ganti meter")){
                txt_ganti_meter.setVisibility(1);
                et_id_ganti_meter.setVisibility(1);
            }else{
                txt_ganti_meter.setVisibility(2);
                et_id_ganti_meter.setVisibility(2);
            }

        }

        @Override
        public void onNothingSelected(AdapterView<?> arg0) {
            // TODO Auto-generated method stub

        }

    });

Answer 1

Set visibility like this

txt_ganti_meter.setVisibility(View.VISIBLE);

txt_ganti_meter.setVisibility(View.GONE);

Answer 2

currently u are passing wrong constant values to setVisibility for making a View INVISIBLE or VISIBLE :

as in View class :

Constant Value: 2 (0x00000002) :The view is not important for accessibility.

and

Constant Value: 1 (0x00000002) :The view is important for accessibility.

u will pass 0 and 4 to make View Visible or InVisible

For VISIBLE : setVisibility(0) or setVisibility(View.VISIBLE)

For INVISIBLE : setVisibility(4) or setVisibility(View.INVISIBLE)

For GONE : setVisibility(8) or setVisibility(View.GONE)

Answer 3

根据需要使用此txt_ganti_meter.setVisibility（View.INVISIBLE）或txt_ganti_meter.setVisibility（（View.VISIBLE）