spinner (drop down list)

  // set spinner  

 
     spinner = (Spinner) findViewById(R.id.spinner_meterPointType);
     ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(
             this, R.array.meterType_array,  android.R.layout.simple_spinner_item);    // the source is in strings.xml
 
     adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
     spinner.setAdapter(adapter);
 
  // event fire when user select a item from spinner list
     spinner.setOnItemSelectedListener(new MyOnItemSelectedListener()); 

 // set select value (set index of the value)
spinner.setSelection(indexInArray ,true); 
 

 // set select value (get select value index in array)
spinner.getSelectedItemPosition(); 

 

public class MyOnItemSelectedListener implements OnItemSelectedListener {

     public void onItemSelected(AdapterView<?> parent,          View view, int pos, long id) {              label_type.setText(parent.getItemAtPosition(pos).toString());       meterPointNum.setText("");      }

     public void onNothingSelected(AdapterView parent) {        // Do nothing.      }  }

// if the spinner set the touch listener, the OnItemSelectedListener will not be used.

 private View.OnTouchListener Spinner_OnTouch = new View.OnTouchListener() {      public boolean onTouch(View v, MotionEvent event) {          if (event.getAction() == MotionEvent.ACTION_UP) {                          return true;      }  };

 

strings.xml



 
 <string name="name">Choose the value(spinner title)</string>
    <string-array name="meterType_array">			// the array name is used in ArrayAdapter   
        <item>Electricity</item>
        <item>Gas</item>
    </string-array>