我在 Android项目中使用 Dagger依赖注入,可以编译和构建应用程序.对象图看起来是正确的和工作的,但是当我添加匕首编译器作为依赖,以便在编译时获取错误,它报告一些奇怪的错误： @H_403_2@[ERROR] error: No binding for com.squareup.tape.TaskQueue<com.atami \ .mgodroid.io.NodeIndexTask> required by com.atami \ .mgodroid.ui.NodeIndexListFragment for com.atami.mgodroid \ .modules.OttoModule [ERROR] error: No binding for com.squareup.tape.TaskQueue<com.atami \ .mgodroid.io.NodeTask> required by com.atami \ .mgodroid.ui.NodeFragment for com.atami.mgodroid.modules.OttoModule [ERROR] error: No injectable members on com.squareup.otto.Bus. Do you want to add an injectable constructor? required by com.atami. \ mgodroid.io.NodeIndexTaskService for com.atami.mgodroid.modules.TaskQueueModule

Otto错误看起来像Eric Burke在他的Android App Anatomy演示文稿中提到的没有一个@Provides注释,但是你可以在下面看到.

我的Otto和TaskQueue模块如下：

@H_403_2@@Module( entryPoints = { MGoBlogActivity.class,NodeIndexListFragment.class,NodeFragment.class,NodeActivity.class,NodeCommentFragment.class,NodeIndexTaskService.class,NodeTaskService.class } ) public class OttoModule { @Provides @Singleton Bus provideBus() { return new AsyncBus(); } /** * Otto EventBus that posts all events on the Android main thread */ private class AsyncBus extends Bus { private final Handler mainThread = new Handler(Looper.getMainLooper()); @Override public void post(final Object event) { mainThread.post(new Runnable() { @Override public void run() { AsyncBus.super.post(event); } }); } } }

…

@H_403_2@@Module( entryPoints = { NodeIndexListFragment.class,NodeTaskService.class } ) public class TaskQueueModule { private final Context appContext; public TaskQueueModule(Context appContext) { this.appContext = appContext; } public static class IOTaskInjector<T extends Task> implements TaskInjector<T> { Context context; /** * Injects Dagger dependencies into Tasks added to TaskQueues * * @param context the application Context */ public IOTaskInjector(Context context) { this.context = context; } @Override public void injectMembers(T task) { ((MGoBlogApplication) context.getApplicationContext()) .objectGraph().inject(task); } } public static class ServiceStarter<T extends Task> implements ObjectQueue.Listener<T> { Context context; Class<? extends Service> service; /** * Starts the provided service when a Task is added to the queue * * @param context the application Context * @param service the Service to start */ public ServiceStarter(Context context,Class<? extends Service> service) { this.context = context; this.service = service; } @Override public void onAdd(ObjectQueue<T> queue,T entry) { context.startService(new Intent(context,service)); } @Override public void onRemove(ObjectQueue<T> queue) { } } @Provides @Singleton TaskQueue<NodeIndexTask> provideNodeIndexTaskQueue() { ObjectQueue<NodeIndexTask> delegate = new InMemoryObjectQueue<NodeIndexTask>(); TaskQueue<NodeIndexTask> queue = new TaskQueue<NodeIndexTask>( delegate,new IOTaskInjector<NodeIndexTask>(appContext)); queue.setListener(new ServiceStarter<NodeIndexTask>( appContext,NodeIndexTaskService.class)); return queue; } @Provides @Singleton TaskQueue<NodeTask> provideNodeTaskQueue() { ObjectQueue<NodeTask> delegate = new InMemoryObjectQueue<NodeTask>(); TaskQueue<NodeTask> queue = new TaskQueue<NodeTask>( delegate,new IOTaskInjector<NodeTask>(appContext)); queue.setListener(new ServiceStarter<NodeTask>( appContext,NodeTaskService.class)); return queue; } }

…

@H_403_2@/** * Module that includes all of the app's modules. Used by Dagger * for compile time validation of injections and modules. */ @Module( includes = { MGoBlogAPIModule.class,OttoModule.class,TaskQueueModule.class } ) public class MGoBlogAppModule { }