public class MainActivity extends Activity {

 @Bind(R.id.tv1)
 TextView mTv1;
 @Bind(R.id.tv2)
 TextView mTv2;

 @Override
 protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.activity_main);
  ButterKnife.bind(this);
  mTv1.setText("tv1已经得到了控件的索引");
 }

 @OnClick(R.id.tv2)
 public void tv2OnClick() {
  Toast.makeText(this, "tv2被点击了", Toast.LENGTH_SHORT).show();
 }

/**
 * Bind annotated fields and methods in the specified {@link Activity}. The current content
 * view is used as the view root.
 *
 * @param target Target activity for view binding.
 */
 public static void bind(Activity target) {
 bind(target, target, Finder.ACTIVITY);
 }

static void bind(Object target, Object source, Finder finder) {
 Class<?> targetClass = target.getClass();
 try {
  if (debug) Log.d(TAG, "Looking up view binder for " + targetClass.getName());
  ViewBinder<Object> viewBinder = findViewBinderForClass(targetClass);
  if (viewBinder != null) {
  viewBinder.bind(finder, target, source);
  }
 } catch (Exception e) {
  throw new RuntimeException("Unable to bind views for " + targetClass.getName(), e);
 }
 }

private static ViewBinder<Object> findViewBinderForClass(Class<?> cls)
  throws IllegalAccessException, InstantiationException {
 ViewBinder<Object> viewBinder = BINDERS.get(cls);
 if (viewBinder != null) {
  if (debug) Log.d(TAG, "HIT: Cached in view binder map.");
  return viewBinder;
 }
 String clsName = cls.getName();
 if (clsName.startsWith(ANDROID_PREFIX) || clsName.startsWith(JAVA_PREFIX)) {
  if (debug) Log.d(TAG, "MISS: Reached framework class. Abandoning search.");
  return NOP_VIEW_BINDER;
 }
 try {
  Class<?> viewBindingClass = Class.forName(clsName + ButterKnifeProcessor.SUFFIX);
  //noinspection unchecked
  viewBinder = (ViewBinder<Object>) viewBindingClass.newInstance();
  if (debug) Log.d(TAG, "HIT: Loaded view binder class.");
 } catch (ClassNotFoundException e) {
  if (debug) Log.d(TAG, "Not found. Trying superclass " + cls.getSuperclass().getName());
  viewBinder = findViewBinderForClass(cls.getSuperclass());
 }
 BINDERS.put(cls, viewBinder);
 return viewBinder;
 }

public class MainActivity$ViewBinder<T extends MainActivity> implements ButterKnife.ViewBinder<T> {
 
 public void bind(ButterKnife.Finder finder, final T target, Object source) {
 target.mTv1 = ((TextView)finder.castView((View)finder.findRequiredView(source, 2131492971, "field 'mTv1'"), 2131492971, "field 'mTv1'"));
 View localView = (View)finder.findRequiredView(source, 2131492972, "field 'mTv2' and method 'tv2OnClick'");
 target.mTv2 = ((TextView)finder.castView(localView, 2131492972, "field 'mTv2'"));
 localView.setOnClickListener(new DebouncingOnClickListener() {
  public void doClick(View paramAnonymousView) {
  target.tv2OnClick();
  }
 });
 }

 public void unbind(T target) {
 target.mTv1 = null;
 target.mTv2 = null;
 }
}

@EActivity(R.layout.content_main)
public class MainActivity extends Activity {

 @ViewById(R.id.myInput)
 EditText myInput;

 @ViewById(R.id.myTextView)
 TextView textView;

 @Click
 void myButton() {
  String name = myInput.getText().toString();
  textView.setText("Hello "+name);
 }
}

public final class MainActivity_
 extends MainActivity
 implements HasViews, OnViewChangedListener
{

 private final OnViewChangedNotifier onViewChangedNotifier_ = new OnViewChangedNotifier();

 @Override
 public void onCreate(Bundle savedInstanceState) {
  OnViewChangedNotifier previousNotifier = OnViewChangedNotifier.replaceNotifier(onViewChangedNotifier_);
  init_(savedInstanceState);
  super.onCreate(savedInstanceState);
  OnViewChangedNotifier.replaceNotifier(previousNotifier);
  setContentView(layout.content_main);
 }

 private void init_(Bundle savedInstanceState) {
  OnViewChangedNotifier.registerOnViewChangedListener(this);
 }

 @Override
 public void setContentView(int layoutResID) {
  super.setContentView(layoutResID);
  onViewChangedNotifier_.notifyViewChanged(this);
 }

 @Override
 public void setContentView(View view, LayoutParams params) {
  super.setContentView(view, params);
  onViewChangedNotifier_.notifyViewChanged(this);
 }

 @Override
 public void setContentView(View view) {
  super.setContentView(view);
  onViewChangedNotifier_.notifyViewChanged(this);
 }

 public static MainActivity_.IntentBuilder_ intent(Context context) {
  return new MainActivity_.IntentBuilder_(context);
 }

 public static MainActivity_.IntentBuilder_ intent(Fragment supportFragment) {
  return new MainActivity_.IntentBuilder_(supportFragment);
 }

 @Override
 public void onViewChanged(HasViews hasViews) {
  myInput = ((EditText) hasViews.findViewById(id.myInput));
  textView = ((TextView) hasViews.findViewById(id.myTextView));
  {
   View view = hasViews.findViewById(id.myButton);
   if (view!= null) {
    view.setOnClickListener(new OnClickListener() {


     @Override
     public void onClick(View view) {
      MainActivity_.this.myButton();
     }

    }
    );
   }
  }
 }
}

private static void injectObject(Object handler, ViewFinder finder) {

  Class<?> handlerType = handler.getClass();

  // inject ContentView
  .......

  // inject view
  Field[] fields = handlerType.getDeclaredFields();
  if (fields != null && fields.length > 0) {
   for (Field field : fields) {
    ViewInject viewInject = field.getAnnotation(ViewInject.class);
    if (viewInject != null) {
     try {
      View view = finder.findViewById(viewInject.value(), viewInject.parentId());
      if (view != null) {
       field.setAccessible(true);
       field.set(handler, view);
      }
     } catch (Throwable e) {
      LogUtils.e(e.getMessage(), e);
     }
    } else {
     ResInject resInject = field.getAnnotation(ResInject.class);
     ...... // 跟viewInject类似
     } else {
      PreferenceInject preferenceInject = field.getAnnotation(PreferenceInject.class);
      ...... // 跟viewInject类似
     }
    }
   }
  }

  // inject event
  Method[] methods = handlerType.getDeclaredMethods();
  if (methods != null && methods.length > 0) {
   for (Method method : methods) {
    Annotation[] annotations = method.getDeclaredAnnotations();
    if (annotations != null && annotations.length > 0) {
     for (Annotation annotation : annotations) {
      Class<?> annType = annotation.annotationType();
      if (annType.getAnnotation(EventBase.class) != null) {
       method.setAccessible(true);
       try {
        // ProGuard：-keep class * extends java.lang.annotation.Annotation { *; }
        Method valueMethod = annType.getDeclaredMethod("value");
        Method parentIdMethod = null;
        try {
         parentIdMethod = annType.getDeclaredMethod("parentId");
        } catch (Throwable e) {
        }
        Object values = valueMethod.invoke(annotation);
        Object parentIds = parentIdMethod == null ? null : parentIdMethod.invoke(annotation);
        int parentIdsLen = parentIds == null ? 0 : Array.getLength(parentIds);
        int len = Array.getLength(values);
        for (int i = 0; i < len; i++) {
         ViewInjectInfo info = new ViewInjectInfo();
         info.value = Array.get(values, i);
         info.parentId = parentIdsLen > i ? (Integer) Array.get(parentIds, i) : 0;
         EventListenerManager.addEventMethod(finder, info, annotation, handler, method);
        }
       } catch (Throwable e) {
        LogUtils.e(e.getMessage(), e);
       }
      }
     }
    }
   }
  }
 }