Created
January 26, 2019 11:15
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//Dagger2_basic_guide_line_part2 | |
/** | |
* author: jixiaoyong | |
* email: jixiaoyong1995@gmail.com | |
* website: https://jixiaoyong.github.io | |
* date: 2019/1/26 | |
* description: 介绍了Dagger 2 中的 @Inject 、 @Component | |
@Module 和 @Provides 的使用 | |
当 @Component 在搜索Service的构造方法时,会先从 @Module 中搜索; | |
如果搜索不到再到 @Inject 修饰的类中查找。 | |
这一点可以从 | |
fun main() { | |
val client = Client() | |
} | |
打印出 “Provides”而非 “default” 得到验证 | |
*/ | |
class Service @Inject constructor(){ | |
var string: String = "default" | |
} | |
class Client{ | |
@Inject | |
lateinit var service: Service | |
init { | |
DaggerClientComponent.create().inject(this) | |
// DaggerClientComponent.builder().build().inject(this) | |
println(service.string) | |
} | |
} | |
@Component(modules = [ClientModule::class]) | |
interface ClientComponent{ | |
fun inject(client: Client) | |
} | |
@Module | |
class ClientModule{ | |
@Provides | |
fun getService() :Service{ | |
val service = Service() | |
service.string = "Provides" | |
return service | |
} | |
} |
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