ios - 如何在 ios 中显示收件箱中的邮件数量

Question

我正在制作一个收件箱模块，我想在标签上显示消息计数。数据来自服务器。所以如果我们有 30 条消息，标签将显示 30 条消息。怎么办？推送通知的概念会用在这里还是别的什么地方？

Answer 1

通过编程方式或使用 IBOutlet 创建一个 UILablel 并在您要应用的位置设置 frame，最后设置为

#import <QuartzCore/QuartzCore.h>


UILabel *label=[[UILabel alloc]initWithFrame:CGRectMake(50, 50, 30, 30)]; //change the frame size as you need
label.layer.borderColor = [UIColor whiteColor].CGColor;
label.layer.borderWidth = 2.0;
label.layer.cornerRadius = label.bounds.size.height / 2;
label.TextAlignment=NSTextAlignmentCenter;
label.layer.masksToBounds = YES;
label.text=[NSString stringWithFormat:@"%d",yourarrayname.count];  // here add your message array name
label.textColor=[UIColor whiteColor];
label.backgroundColor=[UIColor redColor];
[self.view addSubview:label];

swift

let label: UILabel = UILabel(frame: CGRectMake(50, 50, 30, 30))//change the frame size as you need
label.layer.borderColor = UIColor.whiteColor().CGColor
label.layer.borderWidth = 2.0
label.layer.cornerRadius = label.bounds.size.height / 2
label.TextAlignment = .Center
label.layer.masksToBounds = true
label.text = "\(yourarrayname.count)" // here add your message array name
label.textColor = UIColor.whiteColor()
label.backgroundColor = UIColor.redColor()
self.view!.addSubview(label)

输出是