title: Call a spinner's value? Also, use other values based on a spinner's value
body: <p>I have a spinner 'aperture' set up with a list of numbers, and a spinner 'mode' with two options. When a button is pushed I need a calculation to run using various inputs, including the current selection from 'aperture' and a value derived from 'mode'. How do I call the value of a spinner so I can use it in a calculation?</p>
  
  <p>Also, how do I use the spinner 'mode's selection to set this other value before implimenting it in the calculation? To be more specific, if the spinner is set to Small then the value I use in the calculation is 0.015, whereas if Large is selected I need to use 0.028</p>
  
  <p>My other inputs are EditText views, so right now I am set up like this:</p>
  
  <pre><code>    input = (EditText) findViewById(R.id.input1); 
      input2 = (EditText) findViewById(R.id.input2);
      input3 = (EditText) findViewById(R.id.input3); 
      input4 = (EditText) findViewById(R.id.input4);
      output = (TextView) findViewById(R.id.result); 
      output2 = (TextView) findViewById(R.id.result2);
  
      //aperture dropdown
      Spinner s = (Spinner) findViewById(R.id.apt);
      ArrayAdapter adapter2 = ArrayAdapter.createFromResource(        this, R.array.apertures,       
      android.R.layout.simple_spinner_item);
      adapter2.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
      s.setAdapter(adapter2);
  
      //button
      final Button button = (Button) findViewById(R.id.calculate);
      button.setOnClickListener(new View.OnClickListener() {             
       public void onClick(View v) {                 
        // Perform action on click
        doCalculation();
         }         
        });
       }
  
  private void doCalculation() { 
      // Get entered input value 
      String strValue = input.getText().toString(); 
      String strValue2 = input2.getText().toString();
      String strValue3 = input3.getText().toString(); 
      String strValue4 = input4.getText().toString();
  
      // Perform a hard-coded calculation 
      double imperial1 = (Double.parseDouble(strValue3) + (Double.parseDouble(strValue4) / 12));
      double number = Integer.parseInt(strValue) * 2; 
      double number2 = ((number / 20) + 3) / Integer.parseInt(strValue2);
  
      // Update the UI with the result 
      output.setText("Result:  "+ number); 
      output2.setText("Result2: "+ imperial1); 
  }
  }
  </code></pre>
  
  <p>That is not the actual equation, it is just a test to make sure everything connects properly. How would I call the value of spinner 'aperture' and the Small/Large spinner 'mode'</p>