1、退出／挂起后分配数值

- (void)applicationWillResignActive:(UIApplication *)application {

[UIApplication sharedApplication].applicationIconBadgeNumber = 数值;

}

2、接受到推送显示红点

- (void)didReceiveMessageNotification:(NSNotification *)notification {

[UIApplication sharedApplication].applicationIconBadgeNumber =

[UIApplication sharedApplication].applicationIconBadgeNumber + 1;

}

注释：红点数值是后台发下的，前端只是显示，无法真实控制红点数值