EditText with KeyBoard detector

EditTextKBDetector.java

import android.content.Context;
import android.content.Intent;
import android.support.v4.content.LocalBroadcastManager;
import android.util.AttributeSet;
import android.view.KeyEvent;
import android.view.View;
import android.view.inputmethod.EditorInfo;
import android.widget.EditText;
import android.widget.TextView;

/**
 * Created by mirkopinna on 26/09/15.
 */
public class EditTextKBDetector extends EditText {

    public static final String KEYBOARD_HIDE_EVENT = "keyboard.hidden.event";
    public static final String KEYBOARD_SHOW_EVENT = "keyboard.showing.event";

    public EditTextKBDetector(Context context) {
        super(context);
        init();
    }

    public EditTextKBDetector(Context context, AttributeSet attrs) {
        super(context, attrs);
        init();
    }

    public EditTextKBDetector(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
        init();
    }

    private void init() {
        setOnFocusChangeListener(new OnFocusChangeListener() {
            @Override
            public void onFocusChange(View view, boolean b) {
                if (b) {
                    //Has focus keyboard is showing
                    fireKBShownEvent();
                } else {
                    //Doesn't have focus, keyboard is not showing
                    fireKBHiddenEvent();
                }
            }
        });

        setOnEditorActionListener(new OnEditorActionListener() {
            @Override
            public boolean onEditorAction(TextView textView, int i, KeyEvent keyEvent) {
                if (i == EditorInfo.IME_ACTION_DONE) {
                    //Keyboard closed with done button
                    clearFocus();
                    //fireKBHiddenEvent();
                }
                return false;
            }
        });
    }

    @Override
    public boolean onKeyPreIme(int keyCode, KeyEvent event) {
        if (event.getKeyCode() == KeyEvent.KEYCODE_BACK && event.getAction() == KeyEvent.ACTION_UP) {
            //Keyboard closed with back button
            clearFocus();
            //fireKBHiddenEvent();
        }
        return super.dispatchKeyEvent(event);
    }

    private void fireKBShownEvent() {
        LocalBroadcastManager.getInstance(getContext()).sendBroadcast(new Intent(KEYBOARD_SHOW_EVENT));
    }

    private void fireKBHiddenEvent() {
        LocalBroadcastManager.getInstance(getContext()).sendBroadcast(new Intent(KEYBOARD_HIDE_EVENT));
    }

}