Android Button setOnClickListener Design

Solution 1:

If you're targeting 1.6 or later, you can use the android:onClick xml attribute to remove some of the repetitive code. See this blog post by Romain Guy.

<Button 
   android:height="wrap_content"
   android:width="wrap_content"
   android:onClick="myClickHandler" />

And in the Java class, use these below lines of code:

class MyActivity extends Activity {
    public void myClickHandler(View target) {
        // Do stuff
    }
}

Solution 2:

Implement OnClickListener() on your Activity...

public class MyActivity extends Activity implements View.OnClickListener {
}

For each button use...

buttonX.setOnClickListener(this);

In your Activity onClick() method test for which button it is...

@Override
public void onClick(View view) {
    if (View.equals(buttonX))
        // Do something
}

Also in onClick you could use view.getId() to get the resource ID and then use that in a switch/case block to identify each button and perform the relevant action.