iOS自定义UIAlertView

控件的源代码出自GitHub，地址：https://github.com/wimagguc/ios-custom-alertview
在此基础上，添加了一个TitleView，可以设置标题，标题颜色，标题背景颜色

.h

////  IAlertView.h//  qinglian////  Created by yaoliangjun on 16/12/5.//  Copyright © 2016年 yaoliangjun. All rights reserved.//  自定义AlertView弹出框#import <UIKit/UIKit.h>@class IAlertView;typedef void (^OnButtonClickHandle)(IAlertView *alertView, NSInteger buttonIndex);@interface IAlertView : UIView@property (nonatomic, copy) NSString *title;                 // 标题颜色@property (nonatomic, strong) UIColor *titleColor;           // 标题文字@property (nonatomic, strong) UIColor *titleBackgroundColor; // 标题背景颜色@property (nonatomic, strong) UIView *dialogView;            // 外层dialog视图@property (nonatomic, strong) UIView *containerView;         // 自定义的布局（子视图）@property (nonatomic, strong) NSArray *buttonTitles;         // 按钮标题数组@property (nonatomic, copy) OnButtonClickHandle onButtonClickHandle; // 按钮点击事件// 初始化- (instancetype)init;- (instancetype)initWithTitle:(NSString *)title titleColor:(UIColor *)titleColor titleBackgroundColor:(UIColor *)titleBackgroundColor;- (void)addContentView: (UIView *)contentView; // 设置自定义的布局- (void)setOnButtonClickHandle:(OnButtonClickHandle)onButtonClickHandle; // 设置按钮点击事件- (void)deviceOrientationDidChange: (NSNotification *)notification;      // 设备旋转，横向/竖向改变- (void)show;    // 显示- (void)dismiss; // 关闭@end

.m

////  IAlertView.m//  qinglian////  Created by yaoliangjun on 16/12/5.//  Copyright © 2016年 yaoliangjun. All rights reserved.//#import "IAlertView.h"#import <QuartzCore/QuartzCore.h>const static CGFloat kAlertViewDefaultTitleHeight        = 50;  // 标题View高度const static CGFloat kAlertViewDefaultButtonHeight       = 50;  // 按钮高度const static CGFloat kAlertViewDefaultButtonSpacerHeight = 0.5; // 分隔线宽度const static CGFloat kAlertViewCornerRadius              = 7;   // 圆角半径CGFloat buttonHeight = 0;CGFloat buttonSpacerHeight = 0;@interface IAlertView ()@property (nonatomic, strong) UILabel *titleView; // 标题View@end@implementation IAlertView- (instancetype)initWithTitle:(NSString *)title titleColor:(UIColor *)titleColor titleBackgroundColor:(UIColor *)titleBackgroundColor{    _title = title;    _titleColor = titleColor;    _titleBackgroundColor = titleBackgroundColor;    return [self init];}- (instancetype)init{    self = [super init];    if (self) {        self.frame = CGRectMake(0, 0, [UIScreen mainScreen].bounds.size.width, [UIScreen mainScreen].bounds.size.height);        // 默认只有一个取消按钮        _buttonTitles = @[@"取消"];        // 必须调用此方法监听设备旋转才有效        [[UIDevice currentDevice] beginGeneratingDeviceOrientationNotifications];        // 监听设备旋转        [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(deviceOrientationDidChange:) name:UIDeviceOrientationDidChangeNotification object:nil];        // 监听键盘出现        [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWillShow:) name:UIKeyboardWillShowNotification object:nil];        // 监听键盘消失        [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWillHide:) name:UIKeyboardWillHideNotification object:nil];    }    return self;}// 设置子布局- (void)addContentView: (UIView *)contentView{    _containerView = contentView;}// 创建并显示提示AlertView- (void)show{    // 创建提示视图    _dialogView = [self createContainerView];    // layer光栅化，提高性能    _dialogView.layer.shouldRasterize = YES;    _dialogView.layer.rasterizationScale = [[UIScreen mainScreen] scale];    self.layer.shouldRasterize = YES;    self.layer.rasterizationScale = [[UIScreen mainScreen] scale];    self.backgroundColor = [UIColor colorWithRed:0 green:0 blue:0 alpha:0];    [self addSubview:_dialogView];    // iOS7, 旋转方向调整    if (floor(NSFoundationVersionNumber) <= NSFoundationVersionNumber_iOS_7_1) {        UIInterfaceOrientation interfaceOrientation = [[UIApplication sharedApplication] statusBarOrientation];        switch (interfaceOrientation) {            case UIInterfaceOrientationLandscapeLeft:                self.transform = CGAffineTransformMakeRotation(M_PI * 270.0 / 180.0);                break;            case UIInterfaceOrientationLandscapeRight:                self.transform = CGAffineTransformMakeRotation(M_PI * 90.0 / 180.0);                break;            case UIInterfaceOrientationPortraitUpsideDown:                self.transform = CGAffineTransformMakeRotation(M_PI * 180.0 / 180.0);                break;            default:                break;        }        [self setFrame:CGRectMake(0, 0, self.frame.size.width, self.frame.size.height)];    } else {        // iOS8, 仅把提示视图居中即可        CGSize screenSize = [self countScreenSize];        CGSize dialogSize = [self countDialogSize];        CGSize keyboardSize = CGSizeMake(0, 0);        _dialogView.frame = CGRectMake((screenSize.width - dialogSize.width) / 2, (screenSize.height - keyboardSize.height - dialogSize.height) / 2, dialogSize.width, dialogSize.height);    }    [[[[UIApplication sharedApplication] windows] firstObject] addSubview:self];    _dialogView.layer.opacity = 0.5f;//    _dialogView.layer.transform = CATransform3DMakeScale(1.3f, 1.3f, 1.0); // 由大变小的动画    [UIView animateWithDuration:0.1f delay:0.0 options:UIViewAnimationOptionCurveEaseOut                     animations:^{                         self.backgroundColor = [UIColor colorWithRed:0 green:0 blue:0 alpha:0.3f];                         _dialogView.layer.opacity = 1.0f;//                         _dialogView.layer.transform = CATransform3DMakeScale(1, 1, 1);                     }                     completion:nil     ];}// 创建提示视图- (UIView *)createContainerView{    if (!_containerView) {        _containerView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 300, 150)];    }    // 如果有标题则containerView的y坐标往下移    if (_title.length) {        CGRect containerViewFrame = _containerView.frame;        containerViewFrame.origin.y += kAlertViewDefaultTitleHeight;        containerViewFrame.size.height += kAlertViewDefaultTitleHeight;        _containerView.frame = containerViewFrame;    }    CGSize screenSize = [self countScreenSize];    CGSize dialogSize = [self countDialogSize];    [self setFrame:CGRectMake(0, 0, screenSize.width, screenSize.height)];    // 提示视图    UIView *dialogContainer = [[UIView alloc] initWithFrame:CGRectMake((screenSize.width - dialogSize.width) / 2, (screenSize.height - dialogSize.height) / 2, dialogSize.width, dialogSize.height)];    CAGradientLayer *gradient = [CAGradientLayer layer];    gradient.frame = dialogContainer.bounds;    gradient.colors = [NSArray arrayWithObjects:                       (id)[[UIColor colorWithRed:255.0/255.0 green:255.0/255.0 blue:255.0/255.0 alpha:1.0f] CGColor],                       (id)[[UIColor colorWithRed:255.0/255.0 green:255.0/255.0 blue:255.0/255.0 alpha:1.0f] CGColor],                       (id)[[UIColor colorWithRed:255.0/255.0 green:255.0/255.0 blue:255.0/255.0 alpha:1.0f] CGColor],                       nil];    CGFloat cornerRadius = kAlertViewCornerRadius;    gradient.cornerRadius = cornerRadius;    [dialogContainer.layer insertSublayer:gradient atIndex:0];    dialogContainer.layer.cornerRadius = cornerRadius;    dialogContainer.layer.shadowRadius = cornerRadius + 5;    dialogContainer.layer.shadowOpacity = 0.1f;    dialogContainer.layer.shadowOffset = CGSizeMake(0 - (cornerRadius + 5) / 2, 0 - (cornerRadius + 5) / 2);    dialogContainer.layer.shadowColor = [UIColor blackColor].CGColor;    dialogContainer.layer.shadowPath = [UIBezierPath bezierPathWithRoundedRect:dialogContainer.bounds cornerRadius:dialogContainer.layer.cornerRadius].CGPath;    // 分隔线    UIView *lineView = [[UIView alloc] initWithFrame:CGRectMake(0, dialogContainer.bounds.size.height - buttonHeight - buttonSpacerHeight, dialogContainer.bounds.size.width, buttonSpacerHeight)];    lineView.backgroundColor = [UIColor colorWithRed:198.0/255.0 green:198.0/255.0 blue:198.0/255.0 alpha:1.0f];    [dialogContainer addSubview:lineView];    // 添加标题View    if (_title.length) {        _titleView = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, dialogContainer.bounds.size.width, kAlertViewDefaultTitleHeight)];        _titleView.backgroundColor = _titleBackgroundColor;        _titleView.text = _title;        _titleView.textColor = _titleColor ? : [UIColor blackColor];        _titleView.textAlignment = NSTextAlignmentCenter;        [dialogContainer addSubview:_titleView];    }    // 添加子布局    [dialogContainer addSubview:_containerView];    // 添加按钮    [self addButtonsToView:dialogContainer];    return dialogContainer;}// 添加按钮- (void)addButtonsToView: (UIView *)container{    if (!_buttonTitles) {        return;    }    NSInteger buttonCount = [_buttonTitles count];    CGFloat buttonWidth = container.bounds.size.width / buttonCount;    for (int i = 0; i < buttonCount; i++) {        UIButton *closeButton = [UIButton buttonWithType:UIButtonTypeCustom];        [closeButton setFrame:CGRectMake(i * buttonWidth, container.bounds.size.height - buttonHeight, buttonWidth, buttonHeight)];        [closeButton addTarget:self action:@selector(buttonClickHandle:) forControlEvents:UIControlEventTouchUpInside];        [closeButton setTag:i];        [closeButton setTitle:[_buttonTitles objectAtIndex:i] forState:UIControlStateNormal];        // 设置按钮颜色        [closeButton setTitleColor:[UIColor colorWithRed:0.0f green:0.5f blue:1.0f alpha:1.0f] forState:UIControlStateNormal];        [closeButton setTitleColor:[UIColor colorWithRed:0.2f green:0.2f blue:0.2f alpha:0.5f] forState:UIControlStateHighlighted];        [closeButton.titleLabel setFont:[UIFont boldSystemFontOfSize:14.0f]];        [closeButton.layer setCornerRadius:kAlertViewCornerRadius];        [container addSubview:closeButton];        if (i > 0)        {            // 按钮分隔线            UIView *lineView = [[UIView alloc] initWithFrame:CGRectMake(i * buttonWidth, container.bounds.size.height - buttonHeight, kAlertViewDefaultButtonSpacerHeight, buttonHeight)];            lineView.backgroundColor = [UIColor colorWithRed:198.0/255.0 green:198.0/255.0 blue:198.0/255.0 alpha:1.0f];            [container addSubview:lineView];        }    }}// 按钮点击- (void)buttonClickHandle:(id)sender{    if (_onButtonClickHandle) {        _onButtonClickHandle(self, [sender tag]);    }}- (void)setOnClickListerner:(OnButtonClickHandle)onButtonClickHandle{    _onButtonClickHandle = onButtonClickHandle;}// 关闭AlertView并移除- (void)dismiss{    CATransform3D currentTransform = _dialogView.layer.transform;    if (floor(NSFoundationVersionNumber) <= NSFoundationVersionNumber_iOS_7_1) {        CGFloat startRotation = [[_dialogView valueForKeyPath:@"layer.transform.rotation.z"] floatValue];        CATransform3D rotation = CATransform3DMakeRotation(-startRotation + M_PI * 270.0 / 180.0, 0.0f, 0.0f, 0.0f);        _dialogView.layer.transform = CATransform3DConcat(rotation, CATransform3DMakeScale(1, 1, 1));    }    _dialogView.layer.opacity = 1.0f;    [UIView animateWithDuration:0.2f delay:0.0 options:UIViewAnimationOptionTransitionNone                     animations:^{                         self.backgroundColor = [UIColor colorWithRed:0.0f green:0.0f blue:0.0f alpha:0.0f];                         _dialogView.layer.transform = CATransform3DConcat(currentTransform, CATransform3DMakeScale(0.6f, 0.6f, 1.0));                         _dialogView.layer.opacity = 0.0f;                     }                     completion:^(BOOL finished) {                         for (UIView *v in [self subviews]) {                             [v removeFromSuperview];                         }                         [self removeFromSuperview];                     }     ];}// 得到提示视图的size- (CGSize)countDialogSize{    CGFloat dialogWidth = _containerView.frame.size.width;    CGFloat dialogHeight = _containerView.frame.size.height + buttonHeight + buttonSpacerHeight;    return CGSizeMake(dialogWidth, dialogHeight);}// 得到屏幕的size- (CGSize)countScreenSize{    if (_buttonTitles && [_buttonTitles count] > 0) {        buttonHeight       = kAlertViewDefaultButtonHeight;        buttonSpacerHeight = kAlertViewDefaultButtonSpacerHeight;    } else {        buttonHeight = 0;        buttonSpacerHeight = 0;    }    CGFloat screenWidth = [UIScreen mainScreen].bounds.size.width;    CGFloat screenHeight = [UIScreen mainScreen].bounds.size.height;    // iOS7, 屏幕的宽高不会随着方向自动调整    if (floor(NSFoundationVersionNumber) <= NSFoundationVersionNumber_iOS_7_1) {        UIInterfaceOrientation interfaceOrientation = [[UIApplication sharedApplication] statusBarOrientation];        if (UIInterfaceOrientationIsLandscape(interfaceOrientation)) {            CGFloat tmp = screenWidth;            screenWidth = screenHeight;            screenHeight = tmp;        }    }    return CGSizeMake(screenWidth, screenHeight);}// 设备旋转- (void)deviceOrientationDidChange: (NSNotification *)notification{    if (floor(NSFoundationVersionNumber) <= NSFoundationVersionNumber_iOS_7_1) {        [self changeOrientationForIOS7];    } else {        [self changeOrientationForIOS8:notification];    }}// 设备旋转（iOS7）- (void)changeOrientationForIOS7 {    UIInterfaceOrientation interfaceOrientation = [[UIApplication sharedApplication] statusBarOrientation];    CGFloat startRotation = [[self valueForKeyPath:@"layer.transform.rotation.z"] floatValue];    CGAffineTransform rotation;    switch (interfaceOrientation) {        case UIInterfaceOrientationLandscapeLeft:            rotation = CGAffineTransformMakeRotation(-startRotation + M_PI * 270.0 / 180.0);            break;        case UIInterfaceOrientationLandscapeRight:            rotation = CGAffineTransformMakeRotation(-startRotation + M_PI * 90.0 / 180.0);            break;        case UIInterfaceOrientationPortraitUpsideDown:            rotation = CGAffineTransformMakeRotation(-startRotation + M_PI * 180.0 / 180.0);            break;        default:            rotation = CGAffineTransformMakeRotation(-startRotation + 0.0);            break;    }    [UIView animateWithDuration:0.2f delay:0.0 options:UIViewAnimationOptionTransitionNone                     animations:^{                         _dialogView.transform = rotation;                     }                     completion:nil     ];}// 设备旋转（iOS8）- (void)changeOrientationForIOS8: (NSNotification *)notification {    CGFloat screenWidth = [UIScreen mainScreen].bounds.size.width;    CGFloat screenHeight = [UIScreen mainScreen].bounds.size.height;    [UIView animateWithDuration:0.2f delay:0.0 options:UIViewAnimationOptionTransitionNone                     animations:^{                         CGSize dialogSize = [self countDialogSize];                         CGSize keyboardSize = [[[notification userInfo] objectForKey:UIKeyboardFrameBeginUserInfoKey] CGRectValue].size;                         self.frame = CGRectMake(0, 0, screenWidth, screenHeight);                         _dialogView.frame = CGRectMake((screenWidth - dialogSize.width) / 2, (screenHeight - keyboardSize.height - dialogSize.height) / 2, dialogSize.width, dialogSize.height);                     }                     completion:nil     ];}// 键盘出现- (void)keyboardWillShow: (NSNotification *)notification{    CGSize screenSize = [self countScreenSize];    CGSize dialogSize = [self countDialogSize];    CGSize keyboardSize = [[[notification userInfo] objectForKey:UIKeyboardFrameBeginUserInfoKey] CGRectValue].size;    UIInterfaceOrientation interfaceOrientation = [[UIApplication sharedApplication] statusBarOrientation];    if (UIInterfaceOrientationIsLandscape(interfaceOrientation) && NSFoundationVersionNumber <= NSFoundationVersionNumber_iOS_7_1) {        CGFloat tmp = keyboardSize.height;        keyboardSize.height = keyboardSize.width;        keyboardSize.width = tmp;    }    [UIView animateWithDuration:0.1f delay:0.0 options:UIViewAnimationOptionTransitionNone                     animations:^{                         _dialogView.frame = CGRectMake((screenSize.width - dialogSize.width) / 2, (screenSize.height - keyboardSize.height - dialogSize.height) / 2, dialogSize.width, dialogSize.height);                     }                     completion:nil     ];}// 键盘消失- (void)keyboardWillHide: (NSNotification *)notification{    CGSize screenSize = [self countScreenSize];    CGSize dialogSize = [self countDialogSize];    [UIView animateWithDuration:0.1f delay:0.0 options:UIViewAnimationOptionTransitionNone                     animations:^{                         _dialogView.frame = CGRectMake((screenSize.width - dialogSize.width) / 2, (screenSize.height - dialogSize.height) / 2, dialogSize.width, dialogSize.height);                     }                     completion:nil     ];}- (void)dealloc{    [[UIDevice currentDevice] endGeneratingDeviceOrientationNotifications];    [[NSNotificationCenter defaultCenter] removeObserver:self name:UIDeviceOrientationDidChangeNotification object:nil];    [[NSNotificationCenter defaultCenter] removeObserver:self name:UIKeyboardWillHideNotification object:nil];    [[NSNotificationCenter defaultCenter] removeObserver:self name:UIKeyboardWillShowNotification object:nil];}@end

用法如下：

- (void)codeSignClickHandle{//    IAlertView *alertView = [[IAlertView alloc] init]; // 无标题    IAlertView *alertView = [[IAlertView alloc] initWithTitle:@"编码签到" titleColor:kWhiteColor titleBackgroundColor:kNavBarColor];    // 添加子布局    [alertView addContentView:[self addSubView]];    // 添加按钮    [alertView setButtonTitles:@[ @"取消", @"确定" ]];    // 添加按钮点击事件    [alertView setOnButtonClickHandle:^(IAlertView *alertView, NSInteger buttonIndex) {        if (buttonIndex == 0) {            ILog(@"点击取消");        } else if (buttonIndex == 1) {            NSString *inputText = _inputView.text;            if (!inputText.length) {                [SVProgressHUD showErrorWithStatus:@"请输入编码"];                return;            }            ILog(@"点击确定 inputView.text = %@", inputText);        }        // 关闭        [alertView dismiss];    }];    // 显示    [alertView show];}

效果图如下：