是否接受应用通知

+ (BOOL)userReceivePushOrNot
{
    if (((NSString *)[[NSUserDefaults standardUserDefaults] valueForKey:DeviceTokenKey]).length == 0)
    {
        [ShareMethods displayAlertView:@"请在设置中设置接受本应用通知！"];
        return NO;
    }
    return YES;
}