butterknife使用

package com.wandoon.test1;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.Button;
import android.widget.TextView;
import butterknife.Bind;
import butterknife.ButterKnife;
import butterknife.OnClick;

public class MainActivity extends AppCompatActivity {

@Bind(R.id.txt1)
TextView tv;

@Bind(R.id.btn1)
Button btn;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ButterKnife.bind(this);

}
@OnClick(R.id.btn1)
public void click(Button btn){
tv.setText("点击了按钮");
}

@Override
protected void onDestroy() {
super.onDestroy();
ButterKnife.unbind(this);
}
}