Question

我正在使用Viper MVP Code架构 -

当我编译代码时，我收到此错误 -

    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)

这是我的Gradle文件 -

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"
}

这是我的根级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'
}

编辑

LoginMvpPresenter类

package 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

由于我不知道您的依赖关系图的结构或您如何注入这些依赖关系，我只能给您一般的例子。此外，我不确定如何使用您在界面上指定的泛型。

您正在尝试提供没有实现的接口。您需要在Module中定义要返回的实现接口的对象。由于此接口是Presenter，我假设它在活动或片段中使用。

在Activity创建一个内部类，如下所示：

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

然后也作为内部接口创建一个组件。

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

现在你的活动知道如何创建依赖项以及在哪里注入它你需要做的只是注入你可以从你onCreate Activity这样做的类。

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

现在，您可以使用@Inject注释，并将您的演示者声明为Activity类的字段。

如果没有@ Provide-或@ Produces-annotated方法，则无法提供演示者Android |匕首2

1 个答案: