private void TryStartForeground(Intent intent = null)
{
try
{
string content = "DCMS正在后台运行....";
if (intent != null)
{
content = intent.GetStringExtra(EXTRA_NOTIFICATION_CONTENT);
}
//创建Notification
notificationUtil = new NotificationUtil(MainActivity.Instance,
Resource.Mipmap.ic_launcher,
"DCMS",
content,
CHANNEL_ID,
CHANNEL_NAME);
//将服务放置前台
//startForeground() 中的id 和notification 不能为0 和 null
StartForeground(NotificationUtil.NOTIFICATION_ID, notificationUtil.GetNotification());
}
catch (Exception ex)
{
Crashes.TrackError(ex);
}
}
public override StartCommandResult OnStartCommand(Intent intent, StartCommandFlags flags, int startId)
{
if (intent == null)
{
return(StartCommandResult.NotSticky);
}
string content = "DCMS正在运行打印....";
if (intent != null)
{
content = intent.GetStringExtra(EXTRA_NOTIFICATION_CONTENT);
}
//创建Notification
notificationUtil = new NotificationUtil(MainActivity.Instance,
Resource.Mipmap.ic_launcher,
"DCMS",
content,
CHANNEL_ID,
CHANNEL_NAME);
if (Build.VERSION.SdkInt >= BuildVersionCodes.O)
{
//将服务放置前台
//startForeground() 中的id 和notification 不能为0 和 null
StartForeground(NotificationUtil.NOTIFICATION_ID, notificationUtil.GetNotification());
}
return(base.OnStartCommand(intent, flags, startId));
}
public override void OnDestroy()
{
//取消通知
if (notificationUtil != null)
{
notificationUtil.CancelNotification();
notificationUtil = null;
}
base.OnDestroy();
}
/// <summary>
/// 销毁时
/// </summary>
public override void OnDestroy()
{
try
{
IsRun = false;
//取消通知
if (notificationUtil != null)
{
notificationUtil.CancelNotification();
notificationUtil = null;
}
//退出服务
StopForeground(true);
//停止播放
if (_mediaPlayer != null)
{
_mediaPlayer.Stop();
}
//停止服务
this.StopSelf();
//释放电源锁
ReleaseWakeLock();
}
catch (Exception ex)
{
Crashes.TrackError(ex);
}
finally
{
base.OnDestroy();
}
}
