Android Kotlin广播接收器注册异常？定时器服务广播无法接收

问题详情 #

我用Kotlin开发一款带秒表功能的Android应用，其中TimerService类的定时任务可每秒正确执行（日志正常输出），代码如下：

private inner class MyTask(private var time: Double) : TimerTask() {
    override fun run(){
        Log.d("SERVICE", time.toString())
        val intent = Intent(TIMER_UPADATED)
        time++
        intent.putExtra(TIME_EXTRA, time)
        sendBroadcast(intent)
    }
}

但对应的广播接收器无法接收任何消息（无日志输出），初始注册代码如下：

registerReceiver(
            timeReceiver, IntentFilter(TimerService.TIMER_UPADATED)
        )

private val timeReceiver: BroadcastReceiver = object : BroadcastReceiver() {
        override fun onReceive(context: Context, intent: Intent) {
            time = intent.getDoubleExtra(TimerService.TIME_EXTRA, 0.0)
            Log.d("RECEIVER", time.toString())
        }
    }

我判断问题出在接收器注册环节。教程中的上述写法本应生效，但该registerReceiver方法现已被弃用。我尝试了官方推荐的新版本写法，仍然无法接收广播：

registerReceiver(
        requireContext(), updateTime, IntentFilter(TimerService.TIMER_UPADATED),
        ContextCompat.RECEIVER_NOT_EXPORTED
    )

项目SDK配置 #

项目build.gradle中的SDK配置如下：

android {
    namespace = "com.myapp.myapp"
    compileSdk = 34

    defaultConfig {
        applicationId = "com.myapp.myapp"
        minSdk = 33
        targetSdk = 34
}

内容的提问来源于stack exchange，提问作者Elis Hazelton