@Target(ElementType.FIELD)//表示用在字段s上
@Retention(RetentionPolicy.RUNTIME)//表示在生命周期是运行时
public @interface ViewBinder {int id() default -1;String method() default "";String type() default "";
}

public class ViewBinderParser implements Parsable {private ViewBinderParser() {}public static void inject(Object object) {ViewBinderParser parser = new ViewBinderParser();try {parser.parse(object);} catch (Exception e) {LogUtil.e(e.toString());}}@Overridepublic void parse(final Object object) throws Exception {View view = null;final Class<?> clazz = object.getClass();Field[] fields = clazz.getDeclaredFields();//获得Activity中声明的字段for (Field field : fields) {// 查看这个字段是否有我们自定义的注解类标志的if (field.isAnnotationPresent(ViewBinder.class)) {ViewBinder inject = field.getAnnotation(ViewBinder.class);int id = inject.id();if (id < 0) {throw new Exception("id must not be null");}if (id > 0) {field.setAccessible(true);if (object instanceof View) {view = ((View) object).findViewById(id);} else if (object instanceof Activity) {view = ((Activity) object).findViewById(id);}field.set(object, view);//给我们要找的字段设置值String methodName = inject.method();if (!methodName.equals("")) {OnEventListener listener = new OnEventListener(object);String type = inject.type();if (type.equals("")) {throw new Exception("Please input the type of Method,such as 'method=OnClick'");}if (type.equals("OnClick")) {listener.setOnClick(id, methodName);}}}}}}
}

public class OnEventListener {private Object object;public OnEventListener(Object object) {this.object = object;}public void setOnClick(int id, final String methodName) {View view = null;if (object instanceof View) {view = ((View) object).findViewById(id);} else if (object instanceof Activity) {view = ((Activity) object).findViewById(id);}view.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View v) {MethodModel methodModel = new MethodModel();Class clazz = methodModel.getClass();try {Method method = clazz.getMethod(methodName, new Class[]{});method.invoke(methodModel, new Object[]{});} catch (NoSuchMethodException e) {e.printStackTrace();} catch (InvocationTargetException e) {e.printStackTrace();} catch (IllegalAccessException e) {e.printStackTrace();}}});}
}

public class MainActivity extends ActionBarActivity {@ViewBinder(id = R.id.cet_receiver)protected CustomEditText cetReceiver;@ViewBinder(id = R.id.cet_cc)protected CustomEditText cetCC;@ViewBinder(id = R.id.cet_content)protected CustomEditText cetContent;@ViewBinder(id = R.id.cet_subject)protected CustomEditText cetSubject;@ViewBinder(id = R.id.iv_receiver)protected ImageView ivReceiver;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);ViewBinderParser.inject(this);ivReceiver.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View v) {cetCC.setVisibility(View.VISIBLE);}});}
}