How to implement OnClickListener on Android

Question

I learn from

http://developer.android.com/reference/android/widget/Button.html

that \"instead of applying an OnClickListener to the button

Answer 1

You don't need implement OnClickListener, because your button execute the method automatically.

Edit:

public class MainActivity extends Activity {

private OnClickListener onClickListener;
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    if (savedInstanceState == null) {
        getFragmentManager().beginTransaction()
                .add(R.id.container, new PlaceholderFragment()).commit();
    }
    initListener();//Initializing Listener.
    Button button = (Button)findViewById(R.id.try_button);
    //This command causes problem
    button.setOnClickListener(onClickListener);
}

private void initListener(){
         onclickListener = new OnClickListener() {
               @Override
                public void onClick(View view) {
                      Toast.makeText(getApplicationContext(),
                      "Button Clicked",Toast.LENGTH_SHORT).show();
                }
         };
}

Quit the Onclick in your XML.