我是 Dagger 新手,我已经像这样定义了我的应用程序组件
@Singleton
@Component(modules = {ApplicationModule.class})
public interface ApplicationComponent {
void inject(BaseActivity activity);
Context context();
}
这是我的应用程序模块
@Module
public class ApplicationModule {
public TipoApplication application;
public ApplicationModule(TipoApplication application) {
this.application = application;
}
@Singleton
@Provides
public Context provideContext(){return application.getApplicationContext();}
@Singleton
@Provides
public SharedPreferences provideSharedPreferences(Context context){
return PreferenceManager.getDefaultSharedPreferences(context);
}
@Singleton
@Provides
public Gson provideGson(){
return new Gson();
}
@Singleton
@Provides
public SharedPrefsManager provideSharedPrefsManager(SharedPreferences sharedPreferences, Gson gson){
return new SharedPrefsManager(sharedPreferences, gson);
}
}
我创建了一个依赖组件 LocationProviderComponent
@LocationScope
@Component(dependencies = {ApplicationComponent.class},modules = {LocationProviderModule.class})
public interface LocationProviderComponent {
void inject(LocationRepository locationRepository);
}
最后是我的 LocationProviderModule
@Module
public class LocationProviderModule {
@Singleton
@Provides
FusedLocationProviderClient provideFusedLocationProviderClient(Context context) {
return LocationServices.getFusedLocationProviderClient(context);
}
@Singleton
@Provides
LocationRequest provideLocationRequest() {
return new LocationRequest()
.setInterval(5000)
.setFastestInterval(60000)
.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
}
@Singleton
@Provides
LocationSettingsRequest provideLocationSettingRequest(LocationRequest mLocationRequest) {
return new LocationSettingsRequest.Builder().addLocationRequest(mLocationRequest).build();
}
}
我在构建时遇到 2 个错误。
第一个找不到符号类 DaggerApplicationComponent
第二
LocationProviderComponent scoped with LocationScope may not reference bindings with different scopes:
@Singleton @Provides FusedLocationProviderClient LocationProviderModule.provideFusedLocationProviderClient(android.content.Context)
@Singleton @Provides LocationRequest .module.LocationProviderModule.provideLocationRequest()
请告诉我我做错了什么。
最佳答案
任何模块的@Provides
方法只能与它们所属的组件具有相同的范围。阅读更多 here .
在你的情况下LocationProviderModule
是 LocationProviderComponent
的一部分范围为 @LocationScope
而该模块中的提供方法使用 @Singleton
范围。这正是 Dagger 所提示的:
LocationProviderComponent scoped with LocationScope may not reference bindings with different scopes
它还指出了问题所在:
@Singleton @Provides FusedLocationProviderClient LocationProviderModule.provideFusedLocationProviderClient(android.content.Context)
@Singleton @Provides LocationRequest.module.LocationProviderModule.provideLocationRequest()
而不是使用 @Singleton
, 你只需要使用 @LocationScope
在 LocationProviderModule
.
关于android - CustomScope 可能不会引用具有不同范围的绑定(bind),我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/53791779/