为什么 unregisterReceiver() 从不调用 onServiceDisconnected？

Question

我在 Activity:

中绑定了一个服务

override fun onStart() {
    Timber.d("onStart")
    super.onStart()
    val intent = Intent(this, MyService::class.java)
    bindService(intent, serviceConnection, Context.BIND_AUTO_CREATE)
}

目前有效。然后 bindService() 调用 onServiceConnected():

/** Defines callbacks for service binding, passed to bindService()  */
private val serviceConnection = object : ServiceConnection {

    override fun onServiceConnected(className: ComponentName,
                                    service: IBinder) {
        // We've bound to MyService, cast the IBinder and get MyService instance
        val binder = service as MyService.MyBinder
        myService = binder.service
        isBound = true
        registerReceiver(myBroadcastReceiver, filter)
    }

    override fun onServiceDisconnected(arg0: ComponentName) {
        myService!!.removeRecevier(this@MainActivity)
        isBound = false
        unregisterReceiver(myBroadcastReceiver)
    }
}

在我的 onStop() 我也有 unbindService(serviceConnection) ，但是这里永远不会触发 onServiceDisconnected() ？ 我做错了什么？

因此我得到：

Activity MainActivity has leaked IntentReceiver com.example.MyBroadcastReceiver@68091a2 that was originally registered here. Are you missing a call to unregisterReceiver()?
android.app.IntentReceiverLeaked: Activity MainActivity has leaked IntentReceiver com.example.MyBroadcastReceiver@68091a2 that was originally registered here. Are you missing a call to unregisterReceiver()?

Answer 1

您误解了 onServiceDisconnected()

的目的

Called when a connection to the Service has been lost. This typically happens when the process hosting the service has crashed or been killed. This does not remove the ServiceConnection itself -- this binding to the service will remain active, and you will receive a call to onServiceConnected(ComponentName, IBinder) when the Service is next running.

所以这实际上只会在您失去与实际服务的连接时调用。当您与服务解除绑定时，您必须手动进行清理。在与 ServiceConnection 不同的（其他）级别上更好地处理接收器 - 例如 onStart()/onStop().

为什么 unregisterReceiver() 从不调用 onServiceDisconnected？

Why unregisterReceiver() never calls onServiceDisconnected?

android

android-service

kotlin