android - Hilt 注入(inject)不适用于 BroadcastReceiver

Question

BroadcastReceiver 内部的依赖注入(inject)使用 Hilt 不起作用。我尝试调用 BroadcastReceiver使用来自 MainActivity 的警报我得到UninitializedPropertyAccessException .根据文档，它应该像添加 @AndroidEntryPoint 一样简单对接收者的注释，但不是。
示例代码:
应用.kt:

@HiltAndroidApp
class App: Application() {
    override fun onCreate() {
        super.onCreate()
        Log.d(App::class.simpleName, "onCreate: Application")
    }
}

TestHiltInjection.kt:

class TestHiltInjection @Inject constructor() {

    operator fun invoke() {
        Log.d(TestHiltInjection::class.java.simpleName, "invoke called.")
    }
}

HiltBroadcastReceiver.kt:

@AndroidEntryPoint
class HiltBroadcastReceiver : BroadcastReceiver() {

    @Inject lateinit var testHiltInjection: TestHiltInjection

    override fun onReceive(context: Context?, intent: Intent?) {
        testHiltInjection()
    }
}

MainActivity.kt:

@AndroidEntryPoint
class MainActivity : AppCompatActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

        val manager = getSystemService(Context.ALARM_SERVICE) as AlarmManager

        val pending = PendingIntent
            .getBroadcast(this, 0, Intent(this, HiltBroadcastReceiver::class.java), 0)
        manager.setInexactRepeating(
            AlarmManager.ELAPSED_REALTIME_WAKEUP,
            15000, 15000,
            pending
        )
    }
}

输出日志猫:

kotlin.UninitializedPropertyAccessException: lateinit property testHiltInjection has not been initialized

更新
问题已经在 2.29.1 版本解决，使用 @AndroidEntryPoint

Answer 1

更新:根据issue该问题应在版本 2.29.1 中修复 Dagger 柄。因此，只需使用版本 2.29.1-alpha或以上。不要忘记更新hilt-android-gradle-plugin版本 as well .

原答案:有一个 GitHub issue和 workaround .似乎注入(inject)不起作用，因为它实际上发生在 onReceive() 内部。生成的父类的方法。问题是你不能调用 super 方法，因为它是抽象的。但是你可以创建一个简单的包装类来解决这个问题:

abstract class HiltBroadcastReceiver : BroadcastReceiver() {
  @CallSuper
  override fun onReceive(context: Context, intent: Intent) {}
}

@AndroidEntryPoint
class MyBroadcastReceiver : HiltBroadcastReceiver() {
  @Inject lateinit var testHiltInjection: TestHiltInjection

  override fun onReceive(context: Context?, intent: Intent?) {
    super.onReceive(context, intent) // <-- it's the trick

    ...
  }
}