Android 8.0 启动后台service 出错 IllegalStateException: Not allowed to start service Intent
错误原因：
Android 8.0 不再允许后台service直接通过startService方式去启动。
解决办法：
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
context.startForegroundService(new Intent(context, ServedService.class));
} else {
context.startService(new Intent(context, ServedService.class));
}
And in service class, please add the code below for notification:
@Override
public void onCreate() {
super.onCreate();
startForeground(1,new Notification());
}
