ButterKnife使用详解

版权声明

原创作者：谷哥的小弟
博客地址：http://blog.csdn.net/lfdfhl

参考资料

• http://jakewharton.github.io/butterknife/
• https://github.com/JakeWharton/butterknife/

准备工作

• 为Android Studio安装插件Butterknife Zelezny
• 在build.gradle的dependencies{}中加入

compile 'com.jakewharton:butterknife:8.4.0'
annotationProcessor 'com.jakewharton:butterknife-compiler:8.4.0'

使用方式

1. 绑定控件

class ExampleActivity extends Activity {
     @BindView(R.id.title) TextView title;
     @BindView(R.id.subtitle) TextView subtitle;
     @BindView(R.id.footer) TextView footer;
   
     @Override public void onCreate(Bundle savedInstanceState) {
       super.onCreate(savedInstanceState);
       setContentView(R.layout.simple_activity);
       ButterKnife.bind(this);
       // TODO Use fields...
     }
}

2. 绑定资源
   @BindBool, @BindColor, @BindDimen, @BindDrawable, @BindInt, @BindString.

class ExampleActivity extends Activity {
     @BindString(R.string.title) String title;
     @BindDrawable(R.drawable.graphic) Drawable graphic;
     @BindColor(R.color.red) int red; 
     @BindDimen(R.dimen.spacer) Float spacer; 
     // ...
}

3. 绑定Fragment

public class FancyFragment extends Fragment {
     @BindView(R.id.button1) Button button1;
     @BindView(R.id.button2) Button button2;
     private Unbinder unbinder;
   
     @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle b) {
       View view = inflater.inflate(R.layout.fragment, container, false);
       unbinder = ButterKnife.bind(this, view);
       // TODO Use fields...
       return view;
     }
   
     @Override public void onDestroyView() {
       super.onDestroyView();
       unbinder.unbind();
     }
}

在Fragment的onCreateView()中设置绑定，onDestroyView()中解绑

4. 绑定Adapter

public class MyAdapter extends BaseAdapter {
     @Override public View getView(int position, View view, ViewGroup parent) {
       ViewHolder holder;
       if (view != null) {
         holder = (ViewHolder) view.getTag();
       } else {
         view = inflater.inflate(R.layout.whatever, parent, false);
         holder = new ViewHolder(view);
         view.setTag(holder);
       }
   
       holder.name.setText("John Doe");
       // etc...
   
       return view;
 }

 static class ViewHolder {
       @BindView(R.id.title) TextView name;
       @BindView(R.id.job_title) TextView jobTitle;
   
       public ViewHolder(View view) {
         ButterKnife.bind(this, view);
       }
     }
}

5. 绑定Click事件监听

@OnClick(R.id.textView)
   public void clickView(){
       Toast.makeText(this,"click",Toast.LENGTH_SHORT).show();
   }

请注意方法应该是public或者static的