Question

我是iOS开发的新手。我想在完成某些操作时通知用户。在Android中他们提供了小吃店来实现这一点。我看到了很多库。我不确定哪个是所有iOS设备的标准库支持。

https://www.cocoacontrols.com/search?q=notification

先谢谢

Answer 1

我不知道是否有一个是标准的，但我使用的https://github.com/Daltron/NotificationBanner效果非常好并且仍在维护。

Answer 2

您可以创建 UIViewController 的扩展名，并根据位置在其上显示标签。

enum ToastPosition {
case top
case down
}

extension UIViewController {


func show(toastWith message : String, font: UIFont = UIFont.systemFont(ofSize: 12) ,toastPosition: ToastPosition,backgroundColor: UIColor = .black,textColor: UIColor = .white, duration: TimeInterval = 3.0) {

    let yPostition = toastPosition == .top ? 24 : self.view.frame.size.height - 44 - 16//margin

    let frame = CGRect(x: self.view.frame.size.width/2 - 64, y: yPostition, width: 150, height: 44)

    let toast = UILabel(frame: frame)
    toast.backgroundColor = backgroundColor.withAlphaComponent(0.7)
    toast.textColor = textColor
    toast.textAlignment = .center;
    toast.font = font
    toast.text = message
    toast.alpha = 1.0
    toast.layer.cornerRadius = 10;
    toast.clipsToBounds  =  true
    self.view.addSubview(toast)

    UIView.animate(withDuration: duration, delay: 0.1, options: .curveEaseInOut, animations: {
        toast.alpha = 0.0
    }, completion: {(isCompleted) in
        toast.removeFromSuperview()
    })
}

}

如何在支持所有iOS设备的ios中实现Android Snack bar或WhatsApp通知功能

2 个答案: