如何在Dagger Hilt中获得MVP？ [英] How to MVP in Dagger Hilt?

问题描述

我无法使用Model View Presenter（MVP）Hilt方法编译代码。

I can't compile the code using a Model View Presenter(MVP) Hilt approach.

我收到此错误：
/ MotionPoC / app / build /generation/source/kapt/debug/com/aria/motionpoc/di/MotionApp_HiltComponents.java:145：错误：[Dagger / MissingBinding] com.aria.motionpoc.coupon.MainActivity如果没有@Inject构造函数或@提供带注释的方法。此类型支持成员注入，但不能隐式提供。

代码本身：

MainActivity.kt

@AndroidEntryPoint
class MainActivity : AppCompatActivity(), MainContract.View {

    @Inject
    lateinit var presenter: MainContract.Presenter

MainPresenter.kt

class MainPresenter @Inject constructor(
    private val view: MainContract.View
): MainContract.Presenter {

    override fun onViewCreated() {
        view.showList()
    }
}

MainModule.kt

@InstallIn(ActivityComponent::class)
@Module
abstract class MainModule {

    @Binds
    abstract fun bindActivity(view: MainActivity): MainContract.View

    @Binds
    abstract fun bindPresenter(impl: MainPresenter): MainContract.Presenter
}

MotionApp.kt

@HiltAndroidApp
open class MotionApp : Application()

已解决！谢谢您对Manuel Vivo的帮助！
https://github.com/riodext/ AndroidDaggerHiltMVP

推荐答案

问题是，您依赖于Activity的特定实现及其依赖项（即 MainActivity ）对代码不满意。

The problem is that you're depending on a specific implementation of Activity and that dependency (i.e. MainActivity) is not satisfied in the code.

您必须在同一模块中提供它作为绑定：

You'll have to provide that as a binding in the same module:

@InstallIn(ActivityComponent::class)
@Module
object MainActivityModule {

    @Provides
    fun bindActivity(activity: Activity): MainActivity {
        return activity as MainActivity
    }
}

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