如何为工人类实现 Dagger? [英] How to implement Dagger for worker classes?

问题描述

既然Worker类是由框架(WorkerManager)创建的，我们如何在Worker中使用@Inject字段?

Since the Worker class is created by the framework (WorkerManager), how can we use @Inject fields into the Worker?

推荐答案

你必须在要注入的模块中使用@Provides注解提供类.

You have to provide class using @Provides annotation in the module to inject.

首先创建一个包含提供类的模块的组件.

First create a component containing a module which will provide the class.

@Component(modules = {Module.class})
public interface Component1{

    void inject(SyncWorker syncWorker);
}

模块类

@Module
public class Module{

    @Provides
    public ISettingRepository getSettingRepo(){
        return new ISettingRepository();
    }

}

现在在您的代码中编写一个构造函数，用于将组件注入到您的工作类中.

Now write in your code, a constructor that is used to inject the component into your worker class.

public class SyncWorker extends  Worker {

    @Inject
    ISettingRepository settingRepository;

    public SyncWorker(){
        DaggerComponent1.builder().build().inject();
    }

    @NonNull
    @Override
    public Result doWork() {

        sync();
        return Result.SUCCESS;
    }

    private void sync() {

    }
}

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