無法使用@Provisioning或@Produces註釋的方法提供演示者| Android |匕首2

Question

我與蝰蛇MVP代碼架構的工作 -

當我編譯我得到這個錯誤 -

Error:(32, 10) error: com.tv.goin.activities.login.LoginMvpPresenter<com.tv.goin.activities.logi n.LoginMvpView,com.tv.goin.activities.login.LoginMvpInteractor> 
cannot be provided without an @Provides- or @Produces-annotated method. 
    com.tv.goin.activities.login.LoginMvpPresenter<com.tv.goin.activities.login.LoginMvpView,com.tv.goin.activities.login.LoginMvpInteractor> is injected at 
    com.tv.goin.activities.login.LoginActivity.mPresenter 
    com.tv.goin.activities.login.LoginActivity is injected at 
    com.tv.goin.di.component.ActivityComponent.inject(activity) 

這裏是我的搖籃文件中的代碼 -

apply plugin: 'com.android.application' 
//apply plugin: 'com.neenbedankt.android-apt' 


android { 
    compileSdkVersion rootProject.ext.compileSdkVersion 
    buildToolsVersion rootProject.ext.buildToolsVersion 
    defaultConfig { 
     applicationId "com.tv.goin" 
     minSdkVersion rootProject.ext.minSdkVersion 
     targetSdkVersion rootProject.ext.targetSdkVersion 
     versionCode 1 
     versionName "1.0" 
     testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner" 
     vectorDrawables.useSupportLibrary = true 

    } 
    buildTypes { 
     debug { 
      buildConfigField("String", "BASE_URL", "\"http://www.mocky.io/v2\"") 
      buildConfigField("String", "API_KEY", "\"ABCXYZ123TEST\"") 
     } 
     release { 
      minifyEnabled true 
      proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro' 
      buildConfigField("String", "BASE_URL", "\"http://www.mocky.io/v2\"") 
      buildConfigField("String", "API_KEY", "\"ABCXYZ123TEST\"") 
     } 
    } 
} 


dependencies { 
    compile fileTree(dir: 'libs', include: ['*.jar']) 

    // android support libraries 
    compile "com.android.support:appcompat-v7:$rootProject.supportLibraryVersion" 
    compile "com.android.support:recyclerview-v7:$rootProject.supportLibraryVersion" 
    compile "com.android.support:cardview-v7:$rootProject.supportLibraryVersion" 
    compile "com.android.support:design:$rootProject.supportLibraryVersion" 
    compile "com.android.support:support-vector-drawable:$rootProject.supportLibraryVersion" 
    compile "com.android.support:animated-vector-drawable:$rootProject.supportLibraryVersion" 

    // font 
    compile "uk.co.chrisjenx:calligraphy:$rootProject.calligraphyVersion" 

    // network 
    compile "com.amitshekhar.android:rx2-android-networking:$rootProject.rx2FastAndroidNetworking" 

    // image 
    compile "com.github.bumptech.glide:glide:$rootProject.glideVersion" 

    // parser 
    compile "com.google.code.gson:gson:$rootProject.gsonVersion" 

    // database 
    compile "org.greenrobot:greendao:$rootProject.greenDaoVersion" 

    // debug database 
    debugCompile "com.amitshekhar.android:debug-db:$rootProject.debugDBVersion" 

    // dependency injection 
    compile "com.google.dagger:dagger:$rootProject.dagger2Version" 
    annotationProcessor "com.google.dagger:dagger-compiler:$rootProject.dagger2Version" 
    provided 'javax.annotation:jsr250-api:1.0' 
    compile 'javax.inject:javax.inject:1' 

    // reactive 
    compile "io.reactivex.rxjava2:rxjava:$rootProject.rxjava2Version" 
    compile "io.reactivex.rxjava2:rxandroid:$rootProject.rxandroidVersion" 

    // code generator for view 
    compile "com.jakewharton:butterknife:$rootProject.butterKnifeVersion" 
    annotationProcessor "com.jakewharton:butterknife-compiler:$rootProject.butterKnifeVersion" 

    // swipe view 
    compile "com.mindorks:placeholderview:$rootProject.placeholderviewVersion" 

    // logger 
    compile "com.jakewharton.timber:timber:$rootProject.timberVersion" 

    // dependencies for local unit tests 
    testCompile "junit:junit:$rootProject.ext.junitVersion" 
    testCompile "org.mockito:mockito-core:$rootProject.mockitoVersion" 
    testAnnotationProcessor "com.google.dagger:dagger-compiler:$rootProject.dagger2Version" 

    // UI Testing 
    androidTestCompile "com.android.support.test.espresso:espresso-core:$rootProject.espressoVersion" 
    androidTestCompile "com.android.support.test.espresso:espresso-intents:$rootProject.espressoVersion" 
    androidTestCompile "org.mockito:mockito-core:$rootProject.mockitoVersion" 
    androidTestAnnotationProcessor "com.google.dagger:dagger-compiler:$rootProject.dagger2Version" 
} 

configurations.all { 
    resolutionStrategy.force "com.android.support:support-annotations:$supportLibraryVersion" 
} 

這裏我的根級Gradle -

// Top-level build file where you can add configuration options common to all sub-projects/modules. 

buildscript { 
    repositories { 
     jcenter() 
    } 
    dependencies { 
     classpath 'com.android.tools.build:gradle:2.3.0' 
//  classpath 'com.neenbedankt.gradle.plugins:android-apt:1.8' 

     // NOTE: Do not place your application dependencies here; they belong 
     // in the individual module build.gradle files 
    } 
} 

allprojects { 
    repositories { 
     jcenter() 
    } 
} 

task clean(type: Delete) { 
    delete rootProject.buildDir 
} 

// Define versions in a single place 
ext { 
    // Sdk and tools 
    minSdkVersion = 16 
    targetSdkVersion = 25 
    compileSdkVersion = 25 
    buildToolsVersion = '25.0.2' 

    // App dependencies 
    supportLibraryVersion = '25.3.1' 
    gsonVersion = '2.8.0' 
    calligraphyVersion = '2.2.0' 
    glideVersion = '3.7.0' 

    rx2FastAndroidNetworking = '1.0.0' 

    dagger2Version = '2.8' 
    rxjava2Version = '2.0.6' 
    rxandroidVersion = '2.0.1' 
    butterKnifeVersion = '8.6.0' 
    greenDaoVersion = '3.2.0' 
    placeholderviewVersion = '0.6.1' 
    debugDBVersion = '1.0.0' 
    timberVersion = '4.5.1' 

    //Test dependencies 
    junitVersion = '4.12' 
    espressoVersion = '2.2.2' 
    mockitoVersion = '2.7.1' 
} 

EDIT

• LoginMvpPresenter類

  包com.tv.goin.activities.login;

  import com.tv.goin.BaseClasses.MvpPresenter; 
  import com.tv.goin.di.PerActivity; 
  
  /** 
  * Created by Shoeb on 26/7/17. 
  */ 
  @PerActivity 
  public interface LoginMvpPresenter<V extends LoginMvpView, 
       I extends LoginMvpInteractor> extends MvpPresenter<V,I> { 
  
  } 
  

Answer 1

由於我不知道你的依賴關係圖的結構，或者你是如何注入這些依賴關係，我只能給你普通的例子。另外，我不確定自己的頭腦如何與您在界面上指定的仿製藥一起工作。

您試圖提供一個沒有實現的接口。您需要定義您要返回的實現您的接口的對象Module。由於這個接口是Presenter，我假設它正在Activity或Fragment中使用。

在你Activity創建一個內部類如下所示：

@dagger.Module 
class Module { 
    @Provides 
    public LoginMvpPresenter<Class> providesPresenter() { 
     return new LoginMvpPresenterImpl(); 
    } 
} 

然後也作爲內部接口創建一個組件。

@dagger.Component { 
    dependencies = AppComponent.class, 
    modules = { 
     Module.class 
    } 
} 
interface Component { 
    void inject(MyActivity activity); 
} 

現在你的活動知道如何創建的依賴，並在那裏注入這一切，你需要做的是注入類，你可以從你的onCreateActivity像這樣做。

DaggerMyActivity_Component.builder() 
    .appComponent(getAppComponent()) 
    .build() 
    .inject(this); 

現在你可以使用@Inject註釋和聲明你的主持人爲您Activity類的字段。