hurshi / dagger-vm-injector Goto Github PK

已废弃，查看新版 - SimplifyDagger

dagger.android提供了注入的便捷方式，但是只能注入到Activity,Fragment等组件中，对于MVP或者MVVM框架来说，更加希望能注入到Presenter或者ViewModle中。extension组件扩展了dagger.android中的support组件，能注入到自定义类中。（因为本人是在MVVM中使用，此组件为MVVM设计）

1. 添加jitpack仓库

   maven { url 'https://jitpack.io'
   

2. 添加依赖

   implementation "com.github.hurshi.dagger-vm-injector:extension:last_version"
   

3. 修改application

   public class YourApplication extends Application implements HasDaggerVMInjector {
   
   	@Inject
   	DispatchingAndroidInjector<DaggerVM> daggerVMDispatchingAndroidInjector;
   
   	@Override
   	public AndroidInjector<DaggerVM> daggerVMInjector() {
      	     return daggerVMDispatchingAndroidInjector;
   	}
   }
   

4. 在component中将AndroidSupportInjectionModule或者AndroidInjectionModule 替换成AndroidDaggerVMInjectionModule

   @Singleton
   @Component(modules = {AndroidDaggerVMInjectionModule.class})
   public interface AppComponent {
        void inject(App app);
   }
   
   

5. 如果你用到@ActivityKey /@FragmentKey，都替换成@DaggerVMKey

6. 注入方式：(被注入的类需要implements DaggerVM)

   class Test implements DaggerVM{
   	public Test(Application application){
       	AndroidDaggerVMInjection.inject(application, this);
   	}
   }
   

上述编写module,subcomponent代码稍显复杂，这里提供自动生成这些代码的功能，实现ViewModel和module直接绑定

• 存在问题：因为生成的代码是需要dagger去解析的，但是注解不能指定解析顺序（必须先解析我的注解，再解析dagger的注解才行），导致如果本注解比dagger的注解后执行的话，就不能生成对应的dagger代码。
• 解决方案 把生成的代码打成jar包，提供给dagger解析。

1. 添加依赖

   implementation "com.github.hurshi.dagger-vm-injector:extension:last_version"
   

2. 在module的build.gradle中添加

   task daggerModuleSourceJar(type: Jar) {
   		from fileTree(dir: "${project.projectDir.absolutePath}/build/intermediates/classes/debug", include: '**/_GPDaggerVMInjectModule.class')
   		from fileTree(dir: "${project.projectDir.absolutePath}/build/intermediates/classes/debug", include: '**/*_GpSubcomponent.class')
   		from fileTree(dir: "${project.projectDir.absolutePath}/build/intermediates/classes/debug", include: '**/*_GpSubcomponent$Builder.class')
   }
   task toCopyJars(type: Copy) {
   		from 'build/libs'
       		into 'libs_compileonly'
   		rename { String fileName ->
     			fileName.replace(".jar", "DaggerInjections.jar")
   		}
   }
   dependencies {
   		compileOnly fileTree(dir: 'libs_compileonly', include: ['*.jar'])
   		implementation "com.github.hurshi.dagger-vm-injector:annotation:last_version"
   		//kapt "com.github.hurshi.dagger-vm-injector:compiler:last_version"
   		annotationProcessor "com.github.hurshi.dagger-vm-injector:compiler:last_version"
   }
   
   

3. 项目根目录添加shells文件夹,在shells中添加脚本inject.sh

   ../gradlew clean -p ../
   ../gradlew assembleDebug -p ../
   ../gradlew daggerModuleSourceJar -p ../
   ../gradlew toCopyJars -p ../
   ../gradlew clean -p ../
   ../gradlew assembleDebug -p ../
   

1. 给viewmodel绑定module

   @BindVMModule(module = MainModule.class, scope = ActivityScope.class)
   class Test implements DaggerVM{
   	public MainViewModel(Application application){
      		AndroidDaggerVMInjection.inject(application, this);
   	}
   }
   

2. cd shells -> sh inject.sh

3. 确保component中@Component -> modules 中有 _GPDaggerVMInjectModule.class

   @Singleton
   @Component(modules = {AndroidDaggerVMInjectionModule.class,_GPDaggerVMInjectModule.class})
   public interface AppComponent {
        void inject(App app);
   }
   

4.ReBuild后就好了