小编Saj*_*Zeb的帖子

在集成 Dagger 2 以在运行应用程序时实现 ImageDownloader 库的依赖注入后，我遇到了这个问题。

这就是我所做的：

在 build.gradle 中。我添加了这些行：

implementation "com.google.dagger:dagger:2.16"\nimplementation "com.google.dagger:dagger-android-support:2.16"\nannotationProcessor "com.google.dagger:dagger-compiler:2.16"\nannotationProcessor "com.google.dagger:dagger-android-processor:2.16"\n

这是我的类 API，我想在其中将依赖项与活动类分开：

public class ImageDownloaderApi {\n\n    @Inject\n    public ImageDownloaderApi(){\n    }\n\n    //some other methods here\n}\n

在我的中MainActivity我添加了这些行：

public class MainActivity extends Activity {\n\n    @Inject\n    ImageDownloaderApi imageDownloaderApi;\n\n    @Override\n    protected void onCreate(Bundle savedInstanceState) {\n        AndroidInjection.inject(this);\n        super.onCreate(savedInstanceState);\n        setContentView(R.layout.activity_main);\n    }\n}\n

然后创建了一个Application对象：

public class MyApplication extends Application {\n\n    @Override\n    public void onCreate() {\n        super.onCreate();\n    }\n}\n

Application然后通过清单注册该类，如下所示：

I am using dagger 2. And injecting my dependency in activities and fragments which is working fine.

AndroidInjection.inject(this) for activities inside onCreate.

// for the activity
override fun onCreate(savedInstanceState: Bundle?) {
    AndroidInjection.inject(this)
    super.onCreate(savedInstanceState)
}

AndroidSupportInjection.inject(this) for fragments inside onAttach.

// for fragments
override fun onAttach(context: Context?) {
    AndroidSupportInjection.inject(this)
    super.onAttach(context)
}

Now i want to inject my same dependency in a custom or util class named AsyncTaskHandler. I am not able to access that dependency.

I suppose i …