首页 > 解决方案 > Android OneTime IntentService 在应用程序被杀死时死亡

问题描述

即使应用程序关闭,我也需要在 10 秒后运行任务。我创建了 IntentService:

class SomeService: IntentService() {

    override fun onHandleIntent(intent: Intent?) {
        Thread.sleep(10_000)
        somefunction()
    }
}

应用程序死亡后,意图服务死亡。我无法使用 BroadcastReceiver 重新启动它,因为它是一次性服务,必须在 10 秒后执行此操作

标签: androidkotlinintentservice

解决方案


引用 Android 开发者指南

IntentService 受 Android 8.0(API 级别 26)施加的所有后台执行限制的约束

您可以在此处阅读有关限制的更多信息https://developer.android.com/about/versions/oreo/background

您可以尝试的一些解决方案是

1)有前台服务(给服务附加通知)

在 Java 中,我的做法是创建了两个实用程序方法

public static void startNotificationAlongWithForegroundService(Service service,String CHANNEL_ID_FOREGROUND,String CHANNEL_NAME_FOREGROUND, String title, String body, Integer notification_id) {
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {

        NotificationCompat.Builder builder = new NotificationCompat.Builder(service, CHANNEL_ID_FOREGROUND)
                .setContentTitle(title)
                .setContentText(body)
                .setOngoing(true)
                .setSmallIcon(R.drawable.ic_launcher)
                .setProgress(100, 0, true);

        NotificationManager mNotificationManager =  (NotificationManager) service.getSystemService(Context.NOTIFICATION_SERVICE);
        NotificationChannel channel =  mNotificationManager.getNotificationChannel(CHANNEL_ID_FOREGROUND);

        if(channel==null) {
            channel = new NotificationChannel(CHANNEL_ID_FOREGROUND,CHANNEL_NAME_FOREGROUND, NotificationManager.IMPORTANCE_NONE);
            channel.setShowBadge(false);

            if (mNotificationManager != null) {
                    mNotificationManager.createNotificationChannel(channel);
            }

        }
        service.startForeground(notification_id, builder.build());
    }
}

public static void destroyForegroundService(Service context) {
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
        context.stopForeground(true);
    }
}

并为您服务

@Override
protected void onHandleIntent(Intent intent) {

    Utils.startNotificationAlongWithForegroundService(this,"channel_id","channelname","title","body",123);
    //your work
    Utils.destroyForegroundService(this);
}

2)使用JobService/Workmanager

如果您对使用 Job services/WorkManager 不满意,我将很快用示例更新答案。


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