Firebase Wrapper Test Activity using Butterknife

MyActivity.java

package com.example.FireBaseTest;

import android.app.Activity;
import android.os.Bundle;
import android.text.TextUtils;
import android.widget.EditText;
import android.widget.TextView;
import butterknife.InjectView;
import butterknife.OnClick;
import butterknife.Views;
import com.thirdiron.firebasewrapper.FireBaseWrapper;

public class MyActivity extends Activity {

    @InjectView(R.id.key) EditText key;
    @InjectView(R.id.value) EditText value;
    @InjectView(R.id.valuesAdded) TextView output;
    
    private FireBaseWrapper fireBaseWrapper;

    @Override public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        Views.inject(this);

        
        fireBaseWrapper = new FireBaseWrapper(this, "http://browzine.firebaseio.com/testing");
        fireBaseWrapper.init();

        printNodeData();
    }
    
    @OnClick(R.id.addButton) public void addValue() {
        String key = this.key.getText().toString();
        String value = this.value.getText().toString();
        if(TextUtils.isEmpty(value)) {
            return;
        }
        if(TextUtils.isEmpty(key)) {
            fireBaseWrapper.push().setValue(value);
        } else {
            fireBaseWrapper.child(key).setValue(value);
        }
        this.key.setText("");
        this.value.setText("");
        printNodeData();
    }

    @OnClick(R.id.reloadButton) public void printNodeData() {
        output.setText(fireBaseWrapper.getNode().toString());
    }

    @OnClick(R.id.clearAll) public void clearAllData() {
        fireBaseWrapper.clearAllData();
        printNodeData();
    }
}