Android WorkManager-CoroutineWorker后台运行发送Notification通知到前台通知栏，kotlin（2）

喜欢ヅ旅行 2023-09-24 22:17 154阅读 0赞

## Android WorkManager-CoroutineWorker后台运行发送Notification通知到前台通知栏，kotlin（2） ##

package com.example.myapplication
    
    import android.R
    import android.app.Notification
    import android.app.NotificationChannel
    import android.app.NotificationManager
    import android.content.Context
    import android.graphics.Color
    import android.os.Bundle
    import android.util.Log
    import androidx.appcompat.app.AppCompatActivity
    import androidx.core.app.NotificationCompat
    import androidx.core.app.NotificationCompat.PRIORITY_MIN
    import androidx.work.*
    
    
    val TAG = "zhangphil"
    
    fun notification(context: Context, s: String): Notification {
        var channelId = createNotificationChannel(context, "com.fly", "Foreground_Service") ?: ""
        return NotificationCompat.Builder(context, channelId)
            .setOngoing(true)
            .setSmallIcon(R.drawable.ic_notification_overlay)
            .setContentTitle("我的标题")
            .setContentText(s)
            .setPriority(PRIORITY_MIN)
            .setCategory(Notification.CATEGORY_SERVICE)
            .build()
    }
    
    
    private fun createNotificationChannel(
        context: Context,
        channelId: String,
        channelName: String
    ): String? {
        val channel = NotificationChannel(channelId, channelName, NotificationManager.IMPORTANCE_NONE)
        channel.lightColor = Color.BLUE
        channel.lockscreenVisibility = Notification.VISIBILITY_PRIVATE
        val service = context.getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager
        service?.createNotificationChannel(channel)
    
        return channelId
    }
    
    
    class ForegroundWorker(private val context: Context, parameters: WorkerParameters) :
        CoroutineWorker(context, parameters) {
    
        override suspend fun getForegroundInfo(): ForegroundInfo {
            return ForegroundInfo(1, notification(context, "zhangphil"))
        }
    
        override suspend fun doWork(): Result {
            setForegroundAsync(getForegroundInfo())
    
            repeat(1000) {
                Thread.sleep(1000)
                Log.d(TAG, "do work " + it)
            }
    
            return Result.success()
        }
    }
    
    
    class MainActivity : AppCompatActivity() {
        override fun onCreate(savedInstanceState: Bundle?) {
            super.onCreate(savedInstanceState)
    
            val request = OneTimeWorkRequestBuilder<ForegroundWorker>()
                .setExpedited(OutOfQuotaPolicy.DROP_WORK_REQUEST)
                .build()
    
            WorkManager.getInstance(applicationContext)
                .enqueue(request)
        }
    
        override fun onStart() {
            super.onStart()
            println("前台")
        }
    
        override fun onStop() {
            super.onStop()
            println("后台")
        }
    }

配置权限：

<uses-permission android:name="android.permission.POST_NOTIFICATIONS"/>

记得在手机的应用列表设置运行这个app允许通知。

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[favicon32.ico]: https://g.csdnimg.cn/static/logo/favicon32.ico
[android_WorkManager_kotlin_1_zhangphil_-CSDN_Android_WorkManagerWorkManager_App_JobSchedule _JobSchedule _WorkManager_Android_WorkManager_workmanager _zhangphil_-CSDN_favicon32.ico_https_blog.csdn.net_zhangphil_article_details_129379527]: https://blog.csdn.net/zhangphil/article/details/129379527