title: extends BaseActivity onclick listening not working when the activity implements onclick listener
body: <p>I have a baseactivity for my navigation drawer.</p>
  
  <p>this navigation drawer has a onclick listener:</p>
  
  <pre><code>public class BaseActivity extends AppCompatActivity implements View.OnClickListener{
  </code></pre>
  
  <p>...</p>
  
  <pre><code>@Override
  public void onClick(View v) {
      switch(v.getId()) {
          case R.id.Pic:
              Intent intent = new Intent(this, P_Activity.class);
              this.startActivity(intent);
              break;
      }
  }
  </code></pre>
  
  <p>it works nice when the class that extends BaseActivity hasn't a click listener too.
  but if it is like this:</p>
  
  <pre><code>public class Upload extends BaseActivity implements View.OnClickListener {
  </code></pre>
  
  <p>the click on baseactivity will not work.
  any ideas why and how to solve?</p>