title: How can call the button click without clicking the button
body: <p>I have a button declare with login function as follows.</p>
  
  <pre><code>&lt;Button
  android:text="@string/btnNext"
  android:id="@+id/btnNext"
  android:onClick="login"/&gt;
  </code></pre>
  
  <p>login function:</p>
  
  <pre><code>public void login(View view){
     xxxxxxxxx
  }
  </code></pre>
  
  <p>is it possible to trigger a click without clicking a button?</p>