Kotlin广播BroadcastReceiver

aabbcc又一年

于 2020-09-25 23:34:57 发布

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CC 4.0 BY-SA版权

文章标签： broadcast android

本文链接：https://blog.youkuaiyun.com/luoyanda/article/details/108805980

本文详细介绍了如何在Android中实现自定义的BroadcastReceiver，包括继承BroadcastReceiver类、动态注册、解绑以及发送广播的过程。通过具体代码示例展示了消息接收、解析及处理的方法。

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1.继承BroadcastReceiver

    private inner class MyReceiver : BroadcastReceiver() {
        override fun onReceive(context: Context, intent: Intent) {
            if (intent.action == "ALL_DATA") {
                var value = intent.getStringExtra("VALUE")  //收到的消息。
                var mm: MessdateBean = Gson().fromJson(value,MessdateBean::class.java)
                list = mm.content
                var mo = Message.obtain()
                mo.what = 1
                handler.sendMessage(mo)
            }
        }
    }

2.动态注册

       myReceiver = MyReceiver()
        intentFilter = IntentFilter()
        intentFilter!!.addAction("ALL_DATA")
        registerReceiver(myReceiver, intentFilter)

3.注意解绑

  unregisterReceiver(myReceiver)

4，进行广播

                var intent = Intent()
                intent.action = "ALL_DATA"
                intent.putExtra("VALUE", text)
                sendBroadcast(intent)