Android Dagger-2如何提供方法参数的依赖项 [英] Android Dagger-2 how to provide the dependency for method parameters

问题描述

我有一个模块FragmentModule

I have a module FragmentModule

@Module
public class FragmentModule
{
    @Provides
    public static PickerDashboardFragment providesPickerDashboard(int status, String name, Object someComplexObject)
    {
        PickerDashboardFragment fragment = new PickerDashboardFragment();
        Bundle b = new Bundle();
        b.putInt("status", status);
        b.putString("name", name);
        b.putInt("object", someComplexObject);
        fragment.setArguments(bundle);
        return fragment;
    }

    @Provides
    public static PickingFragment providesPickingFragment()
    {
        PickingFragment fragment = new PickingFragment();
        return fragment;
    }
}

这是我的组件类

@Component(modules = {UtilModule.class, FragmentModule.class})
public interface ApplicationComponent
{
    void inject(PickerDashboardActivity target);
}

在我的活动中，这就是我注入 PickerDashboardActivity

In my activity this is how i'm injecting the PickerDashboardActivity

@Inject 
PickerDashboardFragment frag;

ApplicationComponent component = DaggerApplicationComponent.builder().build();
        component.inject(this);

我的问题是为以下项提供依赖项的最佳和最简便的方法 PickerDashboardFragment提供了PickerDashboard（int状态，字符串名称，对象someComplexObject），即状态，名称和someComplexObject。

My question is what's the best and easiest way to provide the dependencies for PickerDashboardFragment providesPickerDashboard(int status, String name, Object someComplexObject) i.e status, name and someComplexObject.

最佳问候

推荐答案

向模块中添加属性和提供方法，如下所示：

Add attributes and Provides methods to your module like this:

@Module
public class FragmentModule
{

    private final int status;
    private final String name;
    private final Object someComplexObject;

    public FragmentModule(int status, String name, Object someComplexObject) {
        this.status = status;
        this.name = name;
        this.someComplexObject = someComplexObject;
    }

    @Provides
    int providesStatus() {
        return status;
    }

    @Provides
    String providesName() {
        return name;
    }

    @Provides
    Object providesSomeComplexObject() {
        return someComplexObjext;
    }

    @Provides
    public static PickerDashboardFragment providesPickerDashboard(int status, String name, Object someComplexObject)
    {
        PickerDashboardFragment fragment = new PickerDashboardFragment();
        Bundle b = new Bundle();
        b.putInt("status", status);
        b.putString("name", name);
        b.putInt("object", someComplexObject);
        fragment.setArguments(bundle);
        return fragment;
    }

    @Provides
    public static PickingFragment providesPickingFragment()
    {
        PickingFragment fragment = new PickingFragment();
        return fragment;
    }
}

具有一个提供整数和字符串的模块可能会使您使用一些限定词（例如 Named ）以避免冲突

Having a module providing ints and Strings will probably make you use some qualifiers (such as Named) in order to avoid collisions

这篇关于Android Dagger-2如何提供方法参数的依赖项的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！