title: Get selected value from UIPickerView
body: <p>As my title said that how can i get selected value from <code>UIPickerView</code>?
  is it following delegate method use for achieve it or not suggest me?</p>
  
  <pre><code>- (void)pickerView:(UIPickerView *)pickerView didSelectRow: (NSInteger)row inComponent:(NSInteger)component
  </code></pre>