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

Try this:

public class MainActivity extends Activity  {

@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();
    }

    //Button button = (Button)findViewById(R.id.try_button);      
    //button.setOnClickListener(this);
}

/**
public void onClick(View v) {

}
*/

@Override
public boolean onCreateOptionsMenu(Menu menu) {

    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.main, menu);
    return true;
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
    int id = item.getItemId();
    if (id == R.id.action_settings) {
        return true;
    }
    return super.onOptionsItemSelected(item);
}

/**
 * A placeholder fragment containing a simple view.
 */
public static class PlaceholderFragment extends Fragment implements OnClickListener {

public PlaceholderFragment() {
}

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
        Bundle savedInstanceState) {
    View rootView = inflater.inflate(R.layout.fragment_main, container,
            false);

  Button button = (Button) rootView.findViewById(R.id.try_button);      
  button.setOnClickListener(this);

    return rootView;
}

@Override
public void onClick(View v) {
    // TODO Auto-generated method stub
    Toast.makeText(getActivity(), "I'm clicked!", Toast.LENGTH_SHORT).show();
}

}
}