具有多个依赖项的Dagger2组件 [英] Dagger2 component with more than one dependencies

问题描述

这是我目前所拥有的并且有效：

This is what I currently have and it works:

@FragmentScope
@Component(dependencies = {FacebookComponent.class}, 
           modules = {FragmentFacebookLoginModule.class})
public interface FragmentFacebookLoginComponent {

    void inject(FragmentFacebookLogin fragment);
}

现在我想添加另一个依赖项。我把它更改为：

Now I want to add another dependency. I changed it to this:

@Component(dependencies = {FacebookComponent.class, AnotherComponent.class}, 
           modules = {FragmentFacebookLoginModule.class})

但现在我收到此错误消息：

But now I get this error message:

FragmentFacebookLoginComponent依赖于多个作用域的
组件

FragmentFacebookLoginComponent depends on more than one scoped component

我该如何解决这个问题？我如何拥有多个依赖项？

How can I solve this? How can I have more than one dependencies?

如果我从一个组件中删除范围，我会收到以下错误消息：

If I remove the scope from one component I get this error message:

AnotherComponent（unscoped）不能依赖于作用域组件

AnotherComponent (unscoped) cannot depend on scoped components

推荐答案

<我在这里找到了答案： https://stackoverflow.com/a/29619594/1016472

最后，我创建了一个具有正确范围的AppComponent，让FacebookComponent和AnotherComponent扩展这个AppComponent。

At the end I created a AppComponent with the right scope and let FacebookComponent and AnotherComponent extends this AppComponent.

FacebookComponent和AnotherComponent没有拥有它自己的范围（我将其删除）。

FacebookComponent and AnotherComponent does not have it's own scope (I removed it).

现在看起来像这样：

@AppScope
@Component
public interface AppComponent {

}


@Component(modules = {FacebookModule.class})
public interface FacebookComponent extends AppComponent {

}


@Component(modules = {AnotherModule.class})
public interface AnotherComponent extends AppComponent {

}


@FragmentScope
@Component(dependencies = {FacebookComponent.class, AnotherComponent.class}, 
           modules = {FragmentFacebookLoginModule.class})
public interface FragmentFacebookLoginComponent {

    void inject(FragmentFacebookLogin fragment);
}

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