android eclipse 没有Annotation Processin ButterKnife在Eclipse的配置

因为要使用开源 androidannotations 注解，发现eclipse没有Annotation Processin

解决办法：

需要配置插件：http://download.eclipse.org/releases/juno

Annotation Processin

http://blog.csdn.net/vurtne_ye/article/details/38850529

工程中添加butterknife.jar后, 在执行代码时,发现注解不成功. 查阅相关文档后, 发现需要在eclipse中对butterknife进行相关的配置. 再次运行后,成功解决问题. 记录配置流程如下: 配置流程 Java代码 收藏代码 工程项目 - 右键 - 选择 properties - 选中 java C

工程中添加butterknife.jar后, 在执行代码时,发现注解不成功.

查阅相关文档后, 发现需要在eclipse中对butterknife进行相关的配置.

再次运行后,成功解决问题.

记录配置流程如下:

配置流程
    Java代码  收藏代码
        工程项目  
        -> 右键  
        -> 选择 properties  
        -> 选中 java Complier  
        -> 选中 Annotation Processing  
        -> 勾选 Enable project specific settings (勾选后,其他选项自动被勾选)  
        -> 选中 Factory Path  
        -> 勾选 Enable project specific settings  
        -> 点击 Add JARs   
        -> 添加 butterknife.jar

butterknife的使用

butterknife

让我们从繁琐的 findViewById  中解救出来。下面直接是使用方法

Activity

class ExampleActivity extends Activity {
  @InjectView(R.id.title) TextView title;
  @InjectView(R.id.subtitle) TextView subtitle;
  @InjectView(R.id.footer) TextView footer;

  @Override public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.simple_activity);
    ButterKnife.inject(this);
    // TODO Use "injected" views...
  }
}

Fragment  销毁的时候掉用  ButterKnife . reset ( this );

public class FancyFragment extends Fragment {
  @InjectView(R.id.button1) Button button1;
  @InjectView(R.id.button2) Button button2;

  @Override View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
    View view = inflater.inflate(R.layout.fancy_fragment, container, false);
    ButterKnife.inject(this, view);
    // TODO Use "injected" views...
    return view;
  }
}

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 {
    @InjectView(R.id.title) TextView name;
    @InjectView(R.id.job_title) TextView jobTitle;

    public ViewHolder(View view) {
      ButterKnife.inject(this, view);
    }
  }
}

VIEW LISTS

@InjectViews({ R.id.first_name, R.id.middle_name, R.id.last_name }) List<EditText> nameViews;

CLICK LISTENER INJECTION

@OnClick(R.id.submit)
 public void submit() {
   // TODO submit data to server...
 }

@OnClick(R.id.submit)
 public void sayHi(Button button) {
   button.setText("Hello!");
 }

还可以绑定多控件id

@OnClick({ R.id.door1, R.id.door2, R.id.door3 })
  public void pickDoor(DoorView door) {
   if (door.hasPrizeBehind()) {
        Toast.makeText(this, "You win!", LENGTH_SHORT).show();
   } else {
       Toast.makeText(this, "Try again", LENGTH_SHORT).show();
   }
  }

INJECTION RESET 销毁

 ButterKnife.reset(this);

默认情况下  @InjectView  and  @OnClick

找到控件都是不允许为空的，否则会抛异常。

可以添加  @Optional

允许为空

@Optional @InjectView(R.id.might_not_be_there) TextView mightNotBeThere;

    @Optional @OnClick(R.id.maybe_missing) void onMaybeMissingClicked() {
    // TODO ...
    }

http://www.tuicool.com/articles/VRruAfAhttp://www.it165.net/pro/html/201404/12375.html