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android - 在 Kotlin 中通过发送广播启动新 Activity

问题描述

我想DashBoardActivity在成功尝试LoginActivity. 我也想在登录后广播 UserToken。但是我可以startActivity()或者如果我当时sendBroadcast().使用了以下代码LoginActivity.kt

btnLogin.setOnClickListener {
    if(loginSuccess){
         sendBroadcast(Intent("TEST"))
         startActivity(Intent(this, DashboardActivity::class.java))
         finish()
    }
}

Dashboard Activity将打开，但广播onReceive()不起作用。请帮助我正确地完成这项任务。

仪表板活动.kt

override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_dashboard)

        registerReceiver(userDataChangeReceiver,
            IntentFilter("TEST"))
    }

    private val userDataChangeReceiver = object: BroadcastReceiver() {
        override fun onReceive(context: Context?, intent: Intent?) {
            println("succeess!")
        }
    }
}

标签： androidkotlinandroid-activitybroadcastreceiver

解决方案

override fun onCreate(savedInstanceState: Bundle?) {
    super.onCreate(savedInstanceState)
    setContentView(R.layout.activity_dashboard)

  val userDataChangeReceiver = object: BroadcastReceiver() {
    override fun onReceive(context: Context?, intent: Intent?) {
        println("succeess!")
    }
 }

    registerReceiver(userDataChangeReceiver,
        IntentFilter("TEST"))
 }
}

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