Issue with TextWatcher not updating in activity
<p>I am trying to recalculate every time the user changes input so I have used a TextWatcher. It calculates when the application starts when text is changed it does not recalculate when I have entered a new value. Could someone tell me what I am doing wrong? Is using the "onTextChanged" correct and would I have to put the whole calculation in that procedure or just call the variables one and two variable that change? Please ignore the spinner.
 Thanks in advance.</p>

<p>public class AndroidActivity extends Activity implements TextWatcher{</p>

<pre><code>  private Spinner spinner1; 

public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.pounds);
    addListenerOnSpinnerItemSelection();

    int one = 0;
    int two = 0;



    try{
      EditText one100lbs = (EditText) findViewById(R.id.one100lbs);
      one = Integer.valueOf(one100lbs.getText().toString().trim());
    }
    catch (NumberFormatException e)
    {
      one = -1;
    }

    try{
      EditText tenPounds = (EditText) findViewById(R.id.tenPounds);
      two = Integer.valueOf(tenPounds.getText().toString().trim()); 
    }
    catch (NumberFormatException e)
    {
      two = -1;
    }

    int result = one + two;

    TextView textView = (TextView) findViewById(R.id.editText1);
    textView.setText(String.valueOf(result)); 




}

//create spinner 
public void addListenerOnSpinnerItemSelection() {
    spinner1 = (Spinner) findViewById(R.id.other_spinner);
    spinner1.setOnItemSelectedListener(new CustomOnItemSelectedListener());
  }

@Override
public void afterTextChanged(Editable s) {
    // TODO Auto-generated method stub
}

@Override
public void beforeTextChanged(CharSequence s, int start, int count,
        int after) {    
    // TODO Auto-generated method stub
}
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
    // TODO Auto-generated method stub

    int one = 0;
    int two = 0;

    try{
      EditText one100lbs = (EditText) findViewById(R.id.one100lbs);
      one = Integer.valueOf(one100lbs.getText().toString().trim());
    }
    catch (NumberFormatException e)
    {
      one = -1;
    }

    try{
      EditText tenPounds = (EditText) findViewById(R.id.tenPounds);
      two = Integer.valueOf(tenPounds.getText().toString().trim()); 
    }
    catch (NumberFormatException e)
    {
      two = -1;
    }

    int result = one + two;

    TextView textView = (TextView) findViewById(R.id.editText1);
    textView.setText(String.valueOf(result)); 
}
</code></pre>

<p>}</p>
