如何使用Android注释的Otto事件总线

时间：2014-11-11 10:33:08

标签： android android-fragments singleton android-annotations otto

我正在开发一个我想使用Android Annotations和Otto Bus Event from Square

的应用

为了将这两个库集成在一起，我遵循了这个link here。此外，我使用了那里建议的Otto 2.0-wip库而不是Otto Git。

这就是我实施的方式：

我为总线创建了一个单例类：

@EBean(scope = EBean.Scope.Singleton)
public class BusProviderAA extends BasicBus{
}

我在my Fragment Class内为此类声明了一个对象，我想在事件中subscribe：

@Bean
BusProviderAA ottoBus;

@AfterInject
protected void initAfterInjectMFragment() 
     .... // my stuff here
    ottoBus.register(this);
}

@Override
public void onStop() {
    super.onStop();
    ottoBus.unregister(this);
}

@Subscribe
public void onChangeUserDetailsEvent(ChangeUserDetailsEvent mEvent){
    Log.e(" s onChangeUserDetailsEvent", "ss onChangeUserDetailsEvent");

    if(mEvent.msg.contains("Data_changed")){
        //TODO 
    }

}

当my communicator class从服务器通信获得callback时，我将事件发送到总线。 这是我post event到我班上班车的方式：

@Bean //To use this enhanced class in another enhanced class or in an enhanced Android component, use @Bean:
BusProviderAA ottoBus;

public void callbackResponse(....){
....// my stuff here and after callback
ottoBus.post(changeUserDetailsEvent(serverResponse.getMsg()));
}

@Produce
public ChangeUserDetailsEvent changeUserDetailsEvent(String msg){
    return new ChangeUserDetailsEvent(msg);
}

这是我的ChangeUserDetailsEvent课程：

public class ChangeUserDetailsEvent {

   public final String msg;

   public ChangeUserDetailsEvent(String msg) {
       this.msg = msg;
   }
}

问题： 我的问题是我在公共事件onChangeUserDetailsEvent订阅的方法没有被调用，我甚至不知道如何调试来解决这个问题。

我应该提一下，当我在没有使用Annotations的Fragment和没有Annotation的Bus单例中实现它时，总线事件可以正常工作。当我不使用Annotations时，这是Bus singleton类：

public class BusProvider {

   private static final Bus BUS = new BasicBus(); // me lib

   public static Bus getInstance(){
       return BUS;
   }

   private BusProvider(){}
}

谢谢！

修改

当我更新androidannotations:3.2从gradle file更改时，我也遇到了问题：

compile 'org.androidannotations:androidannotations:3.1' apt 'org.androidannotations:androidannotations:3.1'

到：

compile 'org.androidannotations:androidannotations:3.2' apt 'org.androidannotations:androidannotations:3.2'。

对于3.1版，它编译但不起作用otto event bus。对于版本3.2，它给出了错误。这意味着AA库已经做了一些我需要实现的更改，或者它有bug。我怎样才能找到解决方案？

这是其中一个错误（用于演示）：错误：（27,25）错误：找不到符号类UserAccountActivity_这是一个活动类。

这是我的androidannotations.log：

17:26:05.187 [Daemon Thread 13] INFO  o.a.AndroidAnnotationProcessor:84 - Initialize AndroidAnnotations 3.2 with options {androidManifestFile=C:\Users\Armando\Android Studio\Hu\app\build\intermediates\manifests\full\debug\AndroidManifest.xml, resourcePackageName=XXPack}
17:26:05.244 [Daemon Thread 13] INFO  o.a.AndroidAnnotationProcessor:108 - Start processing for 15 annotations on 100 elements
17:26:05.273 [Daemon Thread 13] DEBUG o.a.h.AndroidManifestFinder:98 - AndroidManifest.xml file found with specified path: C:\Users\Armando\Android Studio\Hu\app\build\intermediates\manifests\full\debug\AndroidManifest.xml
17:26:05.279 [Daemon Thread 13] INFO  o.a.AndroidAnnotationProcessor:171 - AndroidManifest.xml found: AndroidManifest [applicationPackage=XXPack, componentQualifiedNames=[XXPack.SplashScreen, XXPack.HomeActivity, XXPack.ActivityProve, XXPack.UserAccountActivity_, XXPack.CartActivity_, com.facebook.LoginActivity], permissionQualifiedNames=[android.permission.INTERNET, android.permission.READ_EXTERNAL_STORAGE, android.permission.write_external_storage], applicationClassName=null, libraryProject=false, debugabble=false, minSdkVersion=14, maxSdkVersion=-1, targetSdkVersion=21]
17:26:05.280 [Daemon Thread 13] INFO  o.a.r.ProjectRClassFinder:50 - Found project R class: XXPack.R
17:26:05.286 [Daemon Thread 13] INFO  o.a.r.AndroidRClassFinder:44 - Found Android class: android.R
17:26:05.304 [Daemon Thread 13] INFO  o.a.p.ModelValidator:42 - Validating elements
17:26:05.304 [Daemon Thread 13] DEBUG o.a.p.ModelValidator:62 - Validating with EActivityHandler: [XXPack.CartActivity, XXPack.UserAccountActivity]
17:26:05.306 [Daemon Thread 13] DEBUG o.a.p.ModelValidator:62 - Validating with EFragmentHandler: [XXPack.fragments.AddAddressFragment, XXPack.fragments.AddressBookFragment, XXPack.fragments.ChangePasswordFragment, XXPack.fragments.MyOrdersFragment, XXPack.fragments.MyVouchersFragment, XXPack.fragments.NewsLetterFragment, XXPack.fragments.PaymentMethodFragment, XXPack.fragments.PersonalDataFragment, XXPack.fragments.UserAccountFragment]
17:26:05.308 [Daemon Thread 13] DEBUG o.a.p.ModelValidator:62 - Validating with EBeanHandler: [XXPack.bus.BusProviderAA, XXPack.communicator.UserAccountCommunicator]
17:26:05.308 [Daemon Thread 13] DEBUG o.a.p.ModelValidator:62 - Validating with EViewGroupHandler: [XXPack.layouts.AddressBookItem, XXPack.layouts.CartItem, XXPack.layouts.OrdersItem, XXPack.layouts.UserAccountListFooter, XXPack.layouts.UserAccountListHeader]
17:26:05.319 [Daemon Thread 13] DEBUG o.a.p.ModelValidator:62 - Validating with ItemClickHandler: [lv_user_account(int)]
17:26:05.321 [Daemon Thread 13] DEBUG o.a.p.ModelValidator:62 - Validating with OptionsMenuHandler: [XXPack.fragments.UserAccountFragment]
17:26:05.323 [Daemon Thread 13] DEBUG o.a.p.ModelValidator:62 - Validating with BeanHandler: [ottoBus, ottoBus, communicator]
17:26:05.324 [Daemon Thread 13] DEBUG o.a.p.ModelValidator:62 - Validating with ProduceHandler: [produceNonceEvent(XXPack.models.Nonce), produceErrorEvent(XXPack.models.ErrorCommunication), produceFeatureCategoryEvent(java.util.ArrayList<XXPack.models.SimpleCategory>), produceErrorEvent(XXPack.models.ErrorCommunication), produceProductEvent(java.util.ArrayList<XXPack.models.Product>), produceErrorEvent(XXPack.models.ErrorCommunication), changeUserDetailsEvent(java.lang.String), produceErrorEvent(XXPack.models.ErrorCommunication), produceUserEvent(XXPack.models.User), produceErrorEvent(XXPack.models.ErrorCommunication)]
17:26:05.325 [Daemon Thread 13] WARN  o.a.p.ModelValidator:69 - Element ProduceHandler unvalidated by 
17:26:05.325 [Daemon Thread 13] WARN  o.a.p.ModelValidator:69 - Element ProduceHandler unvalidated by 
17:26:05.325 [Daemon Thread 13] WARN  o.a.p.ModelValidator:69 - Element ProduceHandler unvalidated by 
17:26:05.325 [Daemon Thread 13] WARN  o.a.p.ModelValidator:69 - Element ProduceHandler unvalidated by 
17:26:05.326 [Daemon Thread 13] WARN  o.a.p.ModelValidator:69 - Element ProduceHandler unvalidated by 
17:26:05.326 [Daemon Thread 13] WARN  o.a.p.ModelValidator:69 - Element ProduceHandler unvalidated by 
17:26:05.326 [Daemon Thread 13] ERROR o.a.h.AnnotationHelper:126 - @com.squareup.otto.Produce can only be used on a method with zero parameter, instead of 1
17:26:05.327 [Daemon Thread 13] WARN  o.a.p.ModelValidator:69 - Element ProduceHandler unvalidated by 
17:26:05.327 [Daemon Thread 13] ERROR o.a.h.AnnotationHelper:126 - @com.squareup.otto.Produce can only be used on a method with zero parameter, instead of 1
17:26:05.327 [Daemon Thread 13] WARN  o.a.p.ModelValidator:69 - Element ProduceHandler unvalidated by 
17:26:05.327 [Daemon Thread 13] WARN  o.a.p.ModelValidator:69 - Element ProduceHandler unvalidated by 
17:26:05.328 [Daemon Thread 13] WARN  o.a.p.ModelValidator:69 - Element ProduceHandler unvalidated by 
17:26:05.328 [Daemon Thread 13] DEBUG o.a.p.ModelValidator:62 - Validating with SubscribeHandler: [onNonceEvent(XXPack.event.NonceEvent), onErrorEvent(XXPack.event.ErrorEvent), onFeaturesAndCategory(XXPack.event.FeatureCategoryEvent), onNonceEvent(XXPack.event.NonceEvent), onErrorEvent(XXPack.event.ErrorEvent), onUserEvent(XXPack.event.UserEvent), onChangeUserDetailsEvent(XXPack.event.ChangeUserDetailsEvent)]
17:26:05.328 [Daemon Thread 13] WARN  o.a.p.ModelValidator:69 - Element SubscribeHandler unvalidated by 
17:26:05.328 [Daemon Thread 13] WARN  o.a.p.ModelValidator:69 - Element SubscribeHandler unvalidated by 
17:26:05.328 [Daemon Thread 13] WARN  o.a.p.ModelValidator:69 - Element SubscribeHandler unvalidated by 
17:26:05.328 [Daemon Thread 13] WARN  o.a.p.ModelValidator:69 - Element SubscribeHandler unvalidated by 
17:26:05.328 [Daemon Thread 13] WARN  o.a.p.ModelValidator:69 - Element SubscribeHandler unvalidated by 
17:26:05.328 [Daemon Thread 13] WARN  o.a.p.ModelValidator:69 - Element SubscribeHandler unvalidated by 
17:26:05.328 [Daemon Thread 13] DEBUG o.a.p.ModelValidator:62 - Validating with AfterInjectHandler: [initAfterInjectCart(), initAfterInjectAddAddress(), initAfterInjectAddressBook(), initAfterInjectChangePass(), initAfterInjectAddressBook(), initAfterInjectPersonalData()]
17:26:05.328 [Daemon Thread 13] DEBUG o.a.p.ModelValidator:62 - Validating with AfterViewsHandler: [initAfterViewsCart(), initUserAccountAct(), initAddAddressFragment(), initAddressFragment(), initChangePassFragment(), initMyOrdersFragment(), initMyVoucherFragment(), initNewsLetterFragment(), initPaymentFragment(), initViewsAfterViews(), initUserAccountFragment()]
17:26:05.333 [Daemon Thread 13] INFO  o.a.p.ModelProcessor:69 - Processing root elements
17:26:05.338 [Daemon Thread 13] DEBUG o.a.p.ModelProcessor:160 - Processing root elements EActivityHandler: [XXPack.UserAccountActivity, XXPack.CartActivity]
17:26:05.353 [Daemon Thread 13] DEBUG o.a.p.ModelProcessor:160 - Processing root elements EFragmentHandler: [XXPack.fragments.AddressBookFragment, XXPack.fragments.AddAddressFragment, XXPack.fragments.NewsLetterFragment, XXPack.fragments.MyOrdersFragment, XXPack.fragments.UserAccountFragment, XXPack.fragments.PaymentMethodFragment, XXPack.fragments.PersonalDataFragment, XXPack.fragments.ChangePasswordFragment, XXPack.fragments.MyVouchersFragment]
17:26:05.358 [Daemon Thread 13] DEBUG o.a.p.ModelProcessor:160 - Processing root elements EBeanHandler: [XXPack.bus.BusProviderAA, XXPack.communicator.UserAccountCommunicator]
17:26:05.358 [Daemon Thread 13] DEBUG o.a.p.ModelProcessor:160 - Processing root elements EViewGroupHandler: [XXPack.layouts.CartItem, XXPack.layouts.UserAccountListFooter, XXPack.layouts.OrdersItem, XXPack.layouts.AddressBookItem, XXPack.layouts.UserAccountListHeader]
17:26:05.363 [Daemon Thread 13] INFO  o.a.p.ModelProcessor:77 - Processing enclosed elements
17:26:05.368 [Daemon Thread 13] INFO  o.a.AndroidAnnotationProcessor:250 - Number of files generated by AndroidAnnotations: 18
17:26:05.368 [Daemon Thread 13] INFO  o.a.g.ApiCodeGenerator:52 - Writting following API classes in project: []
17:26:05.373 [Daemon Thread 13] DEBUG o.a.g.SourceCodewriter:55 - Generating class: XXPack.bus.BusProviderAA_
17:26:05.388 [Daemon Thread 13] DEBUG o.a.g.SourceCodewriter:55 - Generating class: XXPack.layouts.AddressBookItem_
17:26:05.456 [Daemon Thread 13] DEBUG o.a.g.SourceCodewriter:55 - Generating class: XXPack.layouts.CartItem_
17:26:05.468 [Daemon Thread 13] DEBUG o.a.g.SourceCodewriter:55 - Generating class: XXPack.layouts.OrdersItem_
17:26:05.480 [Daemon Thread 13] DEBUG o.a.g.SourceCodewriter:55 - Generating class: XXPack.layouts.UserAccountListFooter_
17:26:05.491 [Daemon Thread 13] DEBUG o.a.g.SourceCodewriter:55 - Generating class: XXPack.layouts.UserAccountListHeader_
17:26:05.500 [Daemon Thread 13] DEBUG o.a.g.SourceCodewriter:55 - Generating class: XXPack.CartActivity_
17:26:05.514 [Daemon Thread 13] DEBUG o.a.g.SourceCodewriter:55 - Generating class: XXPack.UserAccountActivity_
17:26:05.529 [Daemon Thread 13] DEBUG o.a.g.SourceCodewriter:55 - Generating class: XXPack.fragments.AddAddressFragment_
17:26:05.546 [Daemon Thread 13] DEBUG o.a.g.SourceCodewriter:55 - Generating class: XXPack.fragments.AddressBookFragment_
17:26:05.559 [Daemon Thread 13] DEBUG o.a.g.SourceCodewriter:55 - Generating class: XXPack.fragments.ChangePasswordFragment_
17:26:05.587 [Daemon Thread 13] DEBUG o.a.g.SourceCodewriter:55 - Generating class: XXPack.fragments.MyOrdersFragment_
17:26:05.600 [Daemon Thread 13] DEBUG o.a.g.SourceCodewriter:55 - Generating class: XXPack.fragments.MyVouchersFragment_
17:26:05.613 [Daemon Thread 13] DEBUG o.a.g.SourceCodewriter:55 - Generating class: XXPack.fragments.NewsLetterFragment_
17:26:05.624 [Daemon Thread 13] DEBUG o.a.g.SourceCodewriter:55 - Generating class: XXPack.fragments.PaymentMethodFragment_
17:26:05.634 [Daemon Thread 13] DEBUG o.a.g.SourceCodewriter:55 - Generating class: XXPack.fragments.PersonalDataFragment_
17:26:05.649 [Daemon Thread 13] DEBUG o.a.g.SourceCodewriter:55 - Generating class: XXPack.fragments.UserAccountFragment_
17:26:05.664 [Daemon Thread 13] DEBUG o.a.g.SourceCodewriter:55 - Generating class: XXPack.communicator.UserAccountCommunicator_
17:26:05.670 [Daemon Thread 13] INFO  o.a.p.TimeStats:81 - Time measurements: [Whole Processing = 426 ms], [Generate Sources = 302 ms], [Process Annotations = 40 ms], [Extract Annotations = 27 ms], [Validate Annotations = 25 ms], [Find R Classes = 18 ms], [Extract Manifest = 6 ms], 
17:26:05.671 [Daemon Thread 13] INFO  o.a.AndroidAnnotationProcessor:122 - Finish processing

1 个答案:

答案 0 :(得分：3)

AndroidAnnotations 3.1有一个错误：它没有处理Produce和Subscribe注释。在AA 3.2中我解决了这个问题。

您可以问为什么AA必须处理这些注释？不幸的是Otto无法从父类中读取注释。但是使用AA，您始终使用生成的子类。这意味着当Otto处理生成的子类时，它没有找到任何Otto注释，这就是为什么你的事件处理程序方法没有被调用。为了解决此问题，我们添加了两个注释处理程序，它们处理Subscribe和Produce。这些处理程序仅覆盖生成的类中的方法，并将Otto注释复制到这些方法。这样Otto就可以读取生成的类中的注释。

例如：

@EActivity(R.layout.activity_my)
class MyActivity extends Activity{

  @Produce
  public Event produce() {
    return ...; // create the event
  }

}

class MyActivity_ extends MyActivity {

  ...

  @Produce
  @Override
  public Event produce() {
    return super.produce();
  }
}

@Produce注释不能有任何参数，因为Otto在调用方法（Otto doc）时无法弄清楚要传递给它的内容。

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