Android-butterknife simple and practical

Android-butterknife simple and practical

Butterknife is a dependency injection framework, which saves us the findviewbyid () operation. We have been using the injection function in xutils all the time. This time, we have experienced this and I feel that there are still some differences.

Instructions for use:

@ Viewinject (r. id. xxx)

Textview xxx;

The textview cannot be private or static. Otherwise, an error is returned. This restriction is not found in xutils.

 

@ OnLongClick (R. id. xxx)

Boolean method ()

The method here cannot be private, and the return type must be boolean.

 

 

Test code:

1. Add dependency:

 

compile 'com.jakewharton:butterknife:6.1.0'

2. layout code:

 

 

3. activity Code:

 

 

public class MainActivity extends ActionBarActivity {    @InjectView(R.id.tv_hello)    TextView tv_hello;    @InjectView(R.id.bt_changetext)    Button bt_changetext;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        ButterKnife.inject(this);//        bt_changetext.setOnClickListener(new View.OnClickListener() {//            @Override//            public void onClick(View v) {////            }//        });    }//    @OnClick(R.id.bt_changetext)//    void changeText() {//        tv_hello.setText("hello my dear graypn!");//    }    @OnLongClick(R.id.bt_changetext)    boolean changeTextByLongClick() {        tv_hello.setText("hello my dear graypn!");        return true;    }}