title: How to call fragment method from main activity
body: <p>I have method in fragment class. I want to call that method from main activity but I don't want to use FragmentById (or) FragmentByTag.</p>
  
  <p>My fragment method:</p>
  
  <pre><code>public void setItemFromDrawer(String sourceTag, String destTag) {
      //dosomething
  }
  </code></pre>
  
  <p>How to call above method from main activity without using FragmentById (or) FragmentByTag?</p>