我的同事根据repository开发了一个应用程序,我应该进行一些更改
我的情况经过一些更改并删除了 Google Room 库,我遇到了这个问题:
错误:找不到符号类DaggerApplicationComponent
几次重建后仍无法生成项目
dagger2Version = '2.20'
implementation "com.google.dagger:dagger:$rootProject.dagger2Version"
annotationProcessor "com.google.dagger:dagger-compiler:$rootProject.dagger2Version"
implementation "com.google.dagger:dagger-android:$rootProject.dagger2Version"
implementation "com.google.dagger:dagger-android-support:$rootProject.dagger2Version"
annotationProcessor "com.google.dagger:dagger-android-processor:$rootProject.dagger2Version"
Application Class
import javax.inject.Inject;
import dagger.android.DispatchingAndroidInjector;
import dagger.android.HasActivityInjector;
import uk.co.chrisjenx.calligraphy.CalligraphyConfig;
public class MvvmApp extends Application implements HasActivityInjector {
@Inject
DispatchingAndroidInjector<Activity> activityDispatchingAndroidInjector;
@Inject
CalligraphyConfig mCalligraphyConfig;
@Override
public DispatchingAndroidInjector<Activity> activityInjector() {
return activityDispatchingAndroidInjector;
}
@Override
public void onCreate() {
super.onCreate();
DaggerAppComponent.builder()
.application(this)
.build()
.inject(this);
BluetoothCollector.getInstance(this);
AppLogger.init();
AndroidNetworking.initialize(getApplicationContext());
CalligraphyConfig.initDefault(mCalligraphyConfig);
}
@Override
public void onTerminate() {
BluetoothCollector.getInstance(this).disconnect();
super.onTerminate();
}
}
AppComponent interface
import javax.inject.Singleton;
import dagger.BindsInstance;
import dagger.Component;
import dagger.android.AndroidInjectionModule;
@Singleton
@Component(modules = {AndroidSupportInjectionModule.class, AppModule.class, ActivityBuilder.class})
public interface AppComponent {
void inject(MvvmApp app);
@Component.Builder
interface Builder {
@BindsInstance
Builder application(Application application);
AppComponent build();
}
}
ActivityBuilder Class
导入dagger.Module;
导入dagger.android.ContributesAndroidInjector;
@Module
public abstract class ActivityBuilder {
@ContributesAndroidInjector(modules = {
FeedActivityModule.class,
BlogFragmentProvider.class,
OpenSourceFragmentProvider.class})
abstract FeedActivity bindFeedActivity();
@ContributesAndroidInjector(modules = LoginActivityModule.class)
abstract LoginActivity bindLoginActivity();
// ...
@ContributesAndroidInjector(modules = SettingsActivityModule.class)
abstract SettingsActivity bindPageSixActivity();
@ContributesAndroidInjector(modules = ChoosingModeActivityModule.class)
abstract ChoosingModeActivity bindChoosingModeActivity();
}
错误日志:
错误:如果没有@Provides注释的方法,则无法提供[Dagger / MissingBinding] com.packagename.data.DataManager。
在com.packagename.data.DataManager中注入
com.packagename.ui.feed.FeedActivityModule.provideFeedViewModel(dataManager,…)
在com.packagename.ui.feed.FeedViewModel注入
com.packagename.ui.feed.FeedActivity.mFeedViewModel
在以下位置注入com.packagename.ui.feed.FeedActivity
dagger.android.AndroidInjector.inject(T)[com.packagename.di.component.AppComponent吗? com.packagename.di.builder.ActivityBuilder_BindFeedActivity.FeedActivitySubcomponent]
FeedActivityModule
import dagger.Module;
import dagger.Provides;
@Module
public class FeedActivityModule {
@Provides
FeedPagerAdapter provideFeedPagerAdapter(FeedActivity activity) {
return new FeedPagerAdapter(activity.getSupportFragmentManager());
}
@Provides
FeedViewModel provideFeedViewModel(DataManager dataManager, SchedulerProvider schedulerProvider) {
return new FeedViewModel(dataManager, schedulerProvider);
}
}
FeedViewModel
public class FeedViewModel extends BaseViewModel/*<FeedNavigator>*/ {
public FeedViewModel(DataManager dataManager, SchedulerProvider schedulerProvider) {
super(dataManager, schedulerProvider);
}
}
答案 0 :(得分:1)
问题是您已经注入了DataManager类,因此您需要通过构造函数注入来注入DataManager,或者必须在AppComponent中为其提供@Provides批注,并且应在使用AndroidSupportInjectionModule.class代替AndroidInjectionModule.class时您的活动正在扩展AppCompatActivity,然后使用AndroidSupportInjection。
@Component(modules = {AndroidSupportInjectionModule.class, AppModule.class, ActivityBuilder.class})
public interface AppComponent {
void inject(AppApplication networkApplication);
@Component.Builder
interface Builder {
@BindsInstance
Builder application(AppApplication application);
AppComponent build();
}
}