Swift 4.0封装Alert和ActionSheet

处理 取消按钮 + N个按钮 的点击事件

支持 alert 和 actionSheet 两种样式

封装代码

import UIKit

class BYAlertActionSheetTool { // 处理 取消按钮 + N个按钮 的点击事件
    static func showAlert(titleStr: String?, msgStr: String?, style: UIAlertController.Style = .alert, currentVC: UIViewController, cancelBtn: String = "取消", cancelHandler:((UIAlertAction) -> Void)?, otherBtns:Array<String>?, otherHandler:((Int) -> ())?) {
        //DispatchQueue.global().async{}//子线程
        DispatchQueue.main.async { // 主线程执行
            let alertController = UIAlertController(title: titleStr, message: msgStr,preferredStyle: style)
            //取消按钮
            let cancelAction = UIAlertAction(title:cancelBtn, style: .cancel, handler:{ (action) -> Void in
                cancelHandler?(action)
            })
            alertController.addAction(cancelAction)
            //其他按钮
            if otherBtns != nil {
                for (index, value) in (otherBtns?.enumerated())! {
                    let otherAction = UIAlertAction(title: value, style: .default, handler: { (action) in
                        otherHandler!(index)
                    })
                    alertController.addAction(otherAction)
                }
            }
             currentVC.present(alertController, animated: true, completion: nil)
        }
    }
}

调用代码

BYAlertActionSheetTool.showAlert(titleStr: nil, msgStr: "电话号码不能为空,是否删除该联络人？", style: .actionSheet, currentVC: self, cancelBtn: "取消", cancelHandler: { (cancelAction) in
                printLog(message: "点击了取消按钮")
                
            }, otherBtns: ["拍照","相册","录像","小视频"]) { (idx) in
                printLog(message: "点击了第\(idx)个按钮")
                
            }

极简调用（默认alert样式，“取消”）

BYAlertActionSheetTool.showAlert(titleStr: nil, msgStr: "电话号码不能为空,是否删除该联络人？", currentVC: self, cancelHandler: nil, otherBtns: nil, otherHandler: nil)

效果图

屏幕快照 2018-09-26 下午2.25.44.png 屏幕快照 2018-09-26 下午2.26.23.png 屏幕快照 2018-09-26 下午2.33.05.png