startservice in android 8.0

[hong0219]

[ERROR]
Caused by java.lang.IllegalStateException
Not allowed to start service Intent { cmp=net.instiz.www.instiz/com.ixuea.android.downloader.DownloadService }: app is in background uid UidRecord{848d58 u0a186 SVC idle change:idle|uncached procs:1 proclist:32669, seq(0,0,0)}

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[ URL ]
https://github.com/ixuea/android-downloader/blob/f5f5690ed0a8be1d7afacb82d2d551591ce83e04/downloader/src/main/java/com/ixuea/android/downloader/DownloadService.java

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[ Code ] DownloadService.java

public static DownloadManager getDownloadManager(Context context, Config config) {
        if (!isServiceRunning(context)) {
            Intent downloadSvr = new Intent(context, DownloadService.class);
            context.startService(downloadSvr); //<---- This is Code Line 31
        }
        if (DownloadService.downloadManager == null) {
            DownloadService.downloadManager = DownloadManagerImpl.getInstance(context, config);
        }
        return downloadManager;
    }

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[Suggest & How to Solve ]
DownloadService.java - getDownloadManager() -31 Line, It needs to be divided
When running the service on Android 8.0

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
    context.startForegroundService(downloadSvr);
} else {
    context.startService(downloadSvr);
}