Swift-custom Alert, swift-alert

Swift-custom Alert, swift-alert

Preface

1. Because various prompt boxes are frequently used in my project, but apple does not meet product requirements, I have customized an Alert for practice.

2. You are welcome to correct the old bird.

Okay, with code.

1. Use a Custom button in Alert

1 let SW = UIScreen.mainScreen().bounds.size.width2 3 let SH = UIScreen.mainScreen().bounds.size.height

 

 1 class ZLButton: UIButton { 2     typealias ChooseBlock = ZLButton -> Void 3     var chooseBlock : ChooseBlock! 4  5     func chooseClassify(block block:ChooseBlock) { 6         chooseBlock=block 7         self.addTarget(self, action: #selector(self.choose(button:)), forControlEvents: UIControlEvents.TouchUpInside) 8     } 9 10     func choose(button button:ZLButton) {11         self.chooseBlock(button)12     }13 }

2. Custom Alert

1 import UIKit 2 3 class ZLAlert: UIView {4 5 var tap: UITapGestureRecognizer! 6 var view1: UIView! 7 var view2: UIView! 8 var backGroundView: UIView! 9 10 typealias FirstChoose = ZLButton-> Void 11 var firstChoose: FirstChoose! 12 13 typealias SecondChoose = ZLButton-> Void 14 var secondChoose: SecondChoose! 15 16 override init (frame: CGRect) {17 super. init (frame: frame) 18 self. frame = frame 19 let window = UIApplication. sharedApplication (). keyWindow 20 window ?. AddSubview (self) 21 backGroundView = UIView (frame: frame) 22 backGroundView. backgroundColor = UIColor. grayColor () 23 backGroundView. alpha = 0.5 24} 25 // show Alert 26 func showCenterAlert (message: String, value1: String, block1: FirstChoose, value2: String, block2: SecondChoose) in the center) {27 firstChoose = block1 28 secondChoose = block2 29 30 tap = UITapGestureRecognizer (target: self, action: # select Or (hideCenterAlert) 31 self. addGestureRecognizer (tap) 32 self. addSubview (backGroundView) 33 34 view1 = UIView () 35 view1.center = backGroundView. center 36 view1.bounds = CGRectMake (0, 0, SW-40/375.0 * SW, 150/375. 0 * SW) 37 view1.backgroundColor = UIColor. whiteColor () 38 view1.layer. masksToBounds = true 39 view1.layer. cornerRadius = 10/375. 0 * SW 40 self. addSubview (view1) 41 42 let messageLab = UILabel (frame: CG RectMake (0, 0, SW-40/375.0 * SW, 100/375. 0 * SW) 43 messageLab. text = message 44 messageLab. textAlignment = NSTextAlignment. center 45 messageLab. font = UIFont. systemFontOfSize (17/375. 0 * SW) 46 messageLab. layer. borderWidth = 0.5 47 messageLab. layer. borderColor = RGB (230, g: 230, B: 230, a: 1 ). CGColor 48 view1.addSubview (messageLab) 49 50 let firstBtn = ZLButton (type: UIButtonType. system) 51 firstBtn. setTitle (val Ue1, forState: UIControlState. normal) 52 firstBtn. setTitleColor (UIColor. blackColor (), forState: UIControlState. normal) 53 firstBtn. frame = CGRectMake (0, 100/375. 0 x SW, SW/2-20/375. 0 * SW, 50/375. 0 * SW) 54 firstBtn. titleLabel ?. Font = UIFont. systemFontOfSize (15/375. 0 * SW) 55 firstBtn. chooseClassify {(button) in 56 self. firstChoose (button) 57} 58 view1.addSubview (firstBtn) 59 60 let secondBtn = ZLButton (type: UIButtonType. system) 61 secondBtn. setTitle (value2, forState: UIControlState. normal) 62 secondBtn. backgroundColor = UIColor. redColor () 63 secondBtn. setTitleColor (UIColor. whiteColor (), forState: UIControlState. normal) 64 s EcondBtn. titleLabel ?. Font = UIFont. systemFontOfSize (15/375. 0 * SW) 65 secondBtn. frame = CGRectMake (SW/2-20/375. 0 * SW, 100/375. 0 x SW, SW/2-20/375. 0 * SW, 50/375. 0 * SW) 66 secondBtn. chooseClassify {(button) in 67 self. secondChoose (button) 68} 69 view1.addSubview (secondBtn) 70} 71 // hide the Alert 72 func hideCenterAlert () {73 self. backGroundView. alpha = 0 74 self. removeFromSuperview () 75} 76 // The Alert 77 func showZLAlert (me Ssage message: String, first: String, block1: FirstChoose, second: String, block2: SecondChoose) {78 79 firstChoose = block1 80 secondChoose = block2 81 82 tap = require (target: self, action: # selector (hideAlert (tap :)) 83 self. addGestureRecognizer (tap) 84 self. addSubview (backGroundView) 85 86 view1 = UIView (frame: CGRectMake (10/375. 0 * SW, SH, SW-20/375.0 * SW, 90/375. 0 * SW) 87 view1.back GroundColor = UIColor. whiteColor () 88 view1.layer. masksToBounds = true 89 view1.layer. cornerRadius = 10/375. 0 * SW 90 self. addSubview (view1) 9192 view2 = UIView (frame: CGRectMake (10/375. 0 * SW, SH + 100/375. 0 * SW, SW-20/375.0 * SW, 40/375. 0 * SW) 93 view2.backgroundColor = UIColor. whiteColor () 94 view2.layer. masksToBounds = true 95 view2.layer. cornerRadius = 10/375. 0 * SW 96 self. addSubview (view2) 97 98 let messageLab = UILabel (frame: CGRectMake (0, 0, SW-20/375.0 * SW, 50/375. 0 * SW) 99 messageLab. text = message100 messageLab. font = UIFont. systemFontOfSize (17/375. 0 * SW) 101 messageLab. textColor = UIColor. lightGrayColor () 102 messageLab. textAlignment = NSTextAlignment. center103 messageLab. layer. borderColor = RGB (230, g: 230, B: 230, a: 1 ). CGColor104 messageLab. layer. borderWidth = 0.5105 view1.addSubview (messageLab) 106 107 let fi RstBtn = ZLButton (type: UIButtonType. 108 firstBtn. setTitle (first, forState: UIControlState. normal) 109 firstBtn. setTitleColor (UIColor. redColor (), forState: UIControlState. normal) 110 firstBtn. frame = CGRectMake (0, 50/375. 0 * SW, SW-20/375.0 * SW, 40/375. 0 x SW) 111 firstBtn. titleLabel ?. Font = UIFont. systemFontOfSize (15/375. 0 x SW) 112 firstBtn. chooseClassify {(button) in113 self. firstChoose (button) 114} 115 view1.addSubview (firstBtn) 116 117 let secondBtn = ZLButton (type: UIButtonType. system) 118 secondBtn. setTitle (second, forState: UIControlState. normal) 119 secondBtn. setTitleColor (UIColor. greenColor (), forState: UIControlState. normal) 120 secondBtn. titleLabel ?. Font = UIFont. systemFontOfSize (15/375. 0 x SW) 121 secondBtn. frame = view2.bounds122 secondBtn. chooseClassify {(button) in123 self. secondChoose (button) 124} 125 view2.addSubview (secondBtn) 126 127 UIView. animateWithDuration (0.3, animations: {128 self. view1.frame = CGRectMake (10/375. 0 * SW, SH-170/375.0 * SW, SW-20/375.0 * SW, 90/375. 0 * SW) 129 self. view2.frame = CGRectMake (10/375. 0 * SW, SH-70/375.0 * SW, SW-20/375.0 * SW, 40/375. 0 * SW) 130}) {(finished: Bool) in131 UIView. animateWithDuration (0.1, animations: {132 self. view1.frame = CGRectMake (10/375. 0 * SW, SH-150/375.0 * SW, SW-20/375.0 * SW, 90/375. 0 * SW) 133 self. view2.frame = CGRectMake (10/375. 0 * SW, SH-50/375.0 * SW, SW-20/375.0 * SW, 40/375. 0 * SW) 134}) 135} 136} 137 func hideAlert (tap: UITapGestureRecognizer) {138 hideView () 139} 140 // hide the following Alert142 func hideView () {143 UIView. animateWithDuration (0.3, animations: {144 self. view1.frame = CGRectMake (10/375. 0 * SW, SH, SW-20/375.0 * SW, 90/375. 0 * SW) 145 self. view2.frame = CGRectMake (10/375. 0 * SW, SH + 100/375. 0 * SW, SW-20/375.0 * SW, 40/375. 0 * SW) 146}) {(finished: Bool) in147 self. backGroundView. alpha = 0148 self. removeFromSuperview () 149} 150} 151 152 required init? (Coder aDecoder: NSCoder) {153 fatalError ("init (coder :) has not been implemented") 154} 155}