奥利奥-前台服务不显示前台通知

问题描述

到目前为止，我已经调整了代码以使用ContextCompat.startForegroundService(context, intentService);来启动我的服务.这样，它就可以在android< 26以及android 26(Oreo)上.

So far, I've adjsuted my code to use ContextCompat.startForegroundService(context, intentService); to start my service. This way, it works on android < 26 and on android 26 (Oreo) as well.

我仍然看到一个区别，在android oreo中我看不到我的自定义前台通知(我只看到应用程序在后台运行"通知).我还必须在那里调整任何东西吗?

I still see a difference, in android oreo I don't see my custom foreground notification (I only see the "app is running in the background" notification). Do I have to adjust anything there as well?

我的服务如下:

public class BaseOverlayService extends Service {
    @Override
    public void onCreate() {
        super.onCreate();
        moveToForeground();
    }

    private void moveToForeground() {
        Notification notification = ...;
        super.startForeground(NOTIFICATION_ID, notification);
    }
}

官方示例

此示例( https://github.com/googlesamples/android-play-location/blob/master/LocationUpdatesForegroundService/app/src/main/java/com/google/android/gms/location/sample/locationupdatesforegroundservice/LocationUpdatesService.java#L200 )显示为注释，我应该使用以下注释，但startServiceInForeground不存在...

This example (https://github.com/googlesamples/android-play-location/blob/master/LocationUpdatesForegroundService/app/src/main/java/com/google/android/gms/location/sample/locationupdatesforegroundservice/LocationUpdatesService.java#L200) shows as comment, that I should use following, but startServiceInForeground does not exist...

if (Build.VERSION.SDK_INT == Build.VERSION_CODES.O) {
    NotificationManager mNotificationManager = ((NotificationManager) getSystemService(NOTIFICATION_SERVICE));
    mNotificationManager.startServiceInForeground(new Intent(this, BaseOverlayService.class), NOTIFICATION_ID, notification);
} else {
    startForeground(NOTIFICATION_ID, notification);
}

修改

我的通知就是这样创建的，它可以在数千个具有API< 26至今:

My notification is created like this, which is working on thousands of android devices with API < 26 until now:

protected Notification foregroundNotification(int notificationId)
{
    boolean paused = MainApp.getPrefs().sidebarServicePaused();
    NotificationCompat.Builder builder = new NotificationCompat.Builder(this);
    builder.setSmallIcon(R.drawable.icon_not);
    builder.setContentIntent(notificationIntent());
    builder.setLargeIcon(BitmapFactory.decodeResource(getResources(), R.drawable.icon));
    builder.setContentTitle(getString(R.string.derived_app_name));
    builder.setContentText(getString(checkStatus() ? (paused ? R.string.service_notification_text_paused : R.string.service_notification_text_running) : R.string.service_notification_text_preparing));
    builder.setColor(Color.parseColor("#25baa2"));

    if (MainApp.getPrefs().hideNotificationIcon())
        builder.setPriority(NotificationCompat.PRIORITY_MIN);
    else
        builder.setPriority(NotificationCompat.PRIORITY_MAX);

    if (paused)
        builder.addAction(R.drawable.ic_play_arrow_black_24dp, getString(R.string.resume), resumeIntent(this));
    else
        builder.addAction(R.drawable.ic_pause_black_24dp, getString(R.string.pause), pauseIntent(this));

    return builder.build();
}

推荐答案

您可能需要为应用定义通知通道.检查日志，应该有警告.检查此以获取介绍

You may need to define Notification Channel for your app. Check the log, there should be warning.Check this for introduction

我给你举个例子，就是科廷语.首先，做一个这样的课.您需要在应用程序启动时调用一次createMainNotificationChannel().

I'll give you some example, it would be in kotin.First, make a class like this. You'll need to call createMainNotificationChannel() once at the start of your application.

class NotificationManager(private val context: Context) {

    companion object {
        private val CHANNEL_ID = "YOUR_CHANNEL_ID"
        private val CHANNEL_NAME = "Your human readable notification channel name"
        private val CHANNEL_DESCRIPTION = "description"
    }

    @RequiresApi(Build.VERSION_CODES.O)
    fun getMainNotificationId(): String {
        return CHANNEL_ID
    }

    @RequiresApi(Build.VERSION_CODES.O)
    fun createMainNotificationChannel() {
            val id = CHANNEL_ID
            val name = CHANNEL_NAME
            val description = CHANNEL_DESCRIPTION
            val importance = android.app.NotificationManager.IMPORTANCE_LOW
            val mChannel = NotificationChannel(id, name, importance)
            mChannel.description = description
            mChannel.enableLights(true)
            mChannel.lightColor = Color.RED
            mChannel.enableVibration(true)
            val mNotificationManager = context.getSystemService(Context.NOTIFICATION_SERVICE) as android.app.NotificationManager
            mNotificationManager.createNotificationChannel(mChannel)
    }
}

然后您可以像这样使用util

Then you can use util like this

fun createNotificationCompatBuilder(context: Context): NotificationCompat.Builder {
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
        return NotificationCompat.Builder(context, NotificationManager(context).mainNotificationId)
    } else {
        return NotificationCompat.Builder(context)
    }
}

这篇关于奥利奥-前台服务不显示前台通知的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！