在alarmmanager中点击通知后打开活动并广播Kotlin

Posted 2023-02-24

【中文标题】在alarmmanager中点击通知后打开活动并广播Kotlin

【英文标题】：Open activity after click in notification in alarmmanager and broadcast Kotlin

【发布时间】：2020-02-11 10:28:03

【问题描述】：

我以这种方式在我的应用程序上每 7 小时设置一次通知：

  alarmManager = getSystemService(Context.ALARM_SERVICE) as AlarmManager
        val intent = Intent(this, AlarmBroadcastReceiver::class.java)
        pendingIntent = PendingIntent.getBroadcast(this, REQUEST_CODE, intent, PendingIntent.FLAG_UPDATE_CURRENT)

        // Setting the specific time for the alarm manager to trigger the intent, in this example, the alarm is set to go off at 23:30, update the time according to your need
        val calendar = Calendar.getInstance()

        val next=  calendar.get(Calendar.HOUR_OF_DAY) + 7

        calendar.timeInMillis = System.currentTimeMillis()
        calendar.set(Calendar.HOUR_OF_DAY, next)
        calendar.set(Calendar.MINUTE, 0)
        calendar.set(Calendar.SECOND,  0)

        // Starts the alarm manager
        alarmManager.setRepeating(
                AlarmManager.RTC_WAKEUP,
                calendar.timeInMillis,
                AlarmManager.INTERVAL_DAY,
                pendingIntent
        )

使用此类 AlarmBroadcastReceiver ：

class AlarmBroadcastReceiver : BroadcastReceiver() 

    override fun onReceive(context: Context?, intent: Intent?) 

        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) 

            // Create the NotificationChannel
            val name = "Alarme"
            val descriptionText = "Detalhes do Alarme"
            val importance = NotificationManager.IMPORTANCE_DEFAULT
            val mChannel = NotificationChannel("AlarmId", name, importance)
            mChannel.description = descriptionText
            val notificationManager = context?.getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager
            notificationManager.createNotificationChannel(mChannel)
        

        // Create the notification to be shown
        val mBuilder = NotificationCompat.Builder(context!!, "AlarmId")
                .setSmallIcon(R.mipmap.ic_food)
                .setContentTitle("Synchronize Fitbit")
                .setContentText("Synchronize Fitbit data and log-in SugarFree for don't lose daily data")
                .setAutoCancel(true)
                .setPriority(NotificationCompat.PRIORITY_DEFAULT)

        // Get the Notification manager service
        val am = context.getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager

        // Generate an Id for each notification
        val id = System.currentTimeMillis() / 1000

        // Show a notification
        am.notify(id.toInt(), mBuilder.build())

通知运行良好，我进入应用程序，设置闹钟，7 小时后到达通知等等。我希望当通知到达时我可以点击它并打开应用程序（可能在我当前的家庭活动中），所以这个警报希望在 7 小时后自动设置。 我看到我必须用我的家庭意图修改pendingIntent......但我有一个

val intent = Intent(this, AlarmBroadcastReceiver::class.java)

需要调用Alarm Receiver 类。

谁能帮帮我？

【参考方案1】：

您只需在通知生成器中添加.setContentIntent。

// Create the notification to be shown
        val mBuilder = NotificationCompat.Builder(context!!, "AlarmId")
                .setSmallIcon(R.mipmap.ic_food)
                .setContentTitle("Synchronize Fitbit")
                .setContentText("Synchronize Fitbit data and log-in SugarFree for don't lose daily data")
                .setAutoCancel(true)
                .setContentIntent(PendingIntent.getActivity(
                    context, // Context from onReceive method.
                    0,
                    Intent(context, HomeActivity::class.java), // Activity you want to launch onClick.
                    0
                  )
                )
                .setPriority(NotificationCompat.PRIORITY_DEFAULT)
                .build()

您可以了解更多here 文档，其中包含有关如何处理任务的更多信息，例如一次只打开一个 Activity。

【讨论】：

我在我的 Builder 中使用了你的 setContentIntet！感谢您在这方面为我提供更多帮助！

@theantomc 如果我的回答对您有帮助，请接受它作为对您问题的回答。是的，当然，如果可以的话，我可以帮助您解决任何问题。谢谢

@theantomc 如果您觉得这有帮助，请记得点赞或标记为已回答***.com/help/someone-answers

【参考方案2】：

您需要创建和设置待处理的意图 -

// Create an Intent for the activity you want to start
val resultIntent = Intent(this, YourMainActivity::class.java)
// Create the TaskStackBuilder
val resultPendingIntent: PendingIntent? = TaskStackBuilder.create(this).run 
    // Add the intent, which inflates the back stack
    addNextIntentWithParentStack(resultIntent)
    // Get the PendingIntent containing the entire back stack
    getPendingIntent(0, PendingIntent.FLAG_UPDATE_CURRENT)
 

然后设置它 -

val builder = NotificationCompat.Builder(this, CHANNEL_ID).apply 
    setContentIntent(resultPendingIntent)
    ...

with(NotificationManagerCompat.from(this)) 
    notify(NOTIFICATION_ID, builder.build())

希望这对你有用。