Different Method to Set a Button's `OnClickListener` in Android

Question

Is there a different way to set a button's OnClickListener besides the following method, such as through XML?

final Button button = (Button) findViewById(R.id.button_id);

button.setOnClickListener(new View.OnClickListener() {

    public void onClick(View v) {
        // Handle click event.
    }

});

Answer 1

1) You have to implement OnClickListener in this option, and then implement its abstract method onClick(View).

class YourClass implements OnClickListener {
   @Override
   protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);     
    setContentView(R.layout.your_activity);
    final Button button = (Button) findViewById(R.id.button_id);
    button.setOnClickListener(this);
   }

   public void onClick(View v) {
            //do something
   }
}

2) Another option, you can also specify the method that your Button will launch from your layout.xml file. You just have to do something like this:

your_layout.xml

<Button
        android:id="@+id/button1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:onClick="myCustomMethod" />

And back to your acitivity class, you just implement that method

class YourClass{ 
   ....


  public void myCustomMethod(View v){
    // do something
  }
}