Kotlin的广播接收器 [英] Broadcast Receiver in kotlin

问题描述

如何在Kotlin的Android中使用注册和创建广播接收器.任何建议.... 在Java中，可以通过将其声明为广播接收器来创建它.但是在Kotlin中，没有广播接收器功能...好吧，如果那里有，那么我将找不到它或如何使用它.

How to use register and create a Broadcast Receiver in Android in Kotlin. Any advice.... In Java, you can create it by declaring it as a Broadcast Receiver.But in Kotlin there is no Broadcast Receiver function...well if it is there then I am not able to find it or how to use it.

推荐答案

您可以通过以下方式完成

you can do it in the following way

在活动类中创建广播接收器对象

Create a broadcast receiver object in your activity class

 val broadCastReceiver = object : BroadcastReceiver() {
        override fun onReceive(contxt: Context?, intent: Intent?) {

            when (intent?.action) {
                BROADCAST_DEFAULT_ALBUM_CHANGED -> handleAlbumChanged()

                BROADCAST_CHANGE_TYPE_CHANGED -> handleChangeTypeChanged()
            }
           }
          }

在活动的onCreate()函数中注册广播接收器

Register broadcast receiver in onCreate() function of your activity

 LocalBroadcastManager.getInstance(this)
                    .registerReceiver(broadCastReceiver, IntentFilter(BROADCAST_DEFAULT_ALBUM_CHANGED))

在您的活动的ondestroy功能中取消注册

unregister it in ondestroy function of your activity

LocalBroadcastManager.getInstance(this)
                .unregisterReceiver(broadCastReceiver)

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