iOS自定义提示弹出框实现类似UIAlertView的效果

首先来看看实现的效果图

下面话不多说，以下是实现的示例代码

#import <UIKit/UIKit.h>typedef void（^AlertResult）（NSInteger index）;@interface XLAlertView : UIView@property （nonatomic,copy） AlertResult resultIndex;- （instancetype）initWithTitle:（NSString *）title message:（NSString *）message sureBtn:（NSString *）sureTitle cancleBtn:（NSString *）cancleTitle;- （void）showXLAlertView;@end

#import "XLAlertView.h"///alertView 宽#define AlertW 280///各个栏目之间的距离#define XLSpace 10.0@interface XLAlertView（）//弹窗@property （nonatomic,retain） UIView *alertView;//title@property （nonatomic,retain） UILabel *titleLbl;//内容@property （nonatomic,retain） UILabel *msgLbl;//确认按钮@property （nonatomic,retain） UIButton *sureBtn;//取消按钮@property （nonatomic,retain） UIButton *cancleBtn;//横线线@property （nonatomic,retain） UIView *lineView;//竖线@property （nonatomic,retain） UIView *verLineView;@end@implementation XLAlertView- （instancetype）initWithTitle:（NSString *）title message:（NSString *）message sureBtn:（NSString *）sureTitle cancleBtn:（NSString *）cancleTitle{if （self == [super init]） {self.frame = [UIScreen mainScreen].bounds;self.backgroundColor = [UIColor colorWithWhite:0.8 alpha:0.6];self.alertView = [[UIView alloc] init];self.alertView.backgroundColor = [UIColor whiteColor];self.alertView.layer.cornerRadius = 5.0;self.alertView.frame = CGRectMake（0, 0, AlertW, 100）;self.alertView.layer.position = self.center;if （title） {self.titleLbl = [self GetAdaptiveLable:CGRectMake（2*XLSpace, 2*XLSpace, AlertW-4*XLSpace, 20） AndText:title andIsTitle:YES];self.titleLbl.textAlignment = NSTextAlignmentCenter;[self.alertView addSubview:self.titleLbl];CGFloat titleW = self.titleLbl.bounds.size.width;CGFloat titleH = self.titleLbl.bounds.size.height;self.titleLbl.frame = CGRectMake（（AlertW-titleW）/2, 2*XLSpace, titleW, titleH）;}if （message） {self.msgLbl = [self GetAdaptiveLable:CGRectMake（XLSpace, CGRectGetMaxY（self.titleLbl.frame）+XLSpace, AlertW-2*XLSpace, 20） AndText:message andIsTitle:NO];self.msgLbl.textAlignment = NSTextAlignmentCenter;[self.alertView addSubview:self.msgLbl];CGFloat msgW = self.msgLbl.bounds.size.width;CGFloat msgH = self.msgLbl.bounds.size.height;self.msgLbl.frame = self.titleLbl?CGRectMake（（AlertW-msgW）/2, CGRectGetMaxY（self.titleLbl.frame）+XLSpace, msgW, msgH）:CGRectMake（（AlertW-msgW）/2, 2*XLSpace, msgW, msgH）;}self.lineView = [[UIView alloc] init];self.lineView.frame = self.msgLbl?CGRectMake（0, CGRectGetMaxY（self.msgLbl.frame）+2*XLSpace, AlertW, 1）:CGRectMake（0, CGRectGetMaxY（self.titleLbl.frame）+2*XLSpace, AlertW, 1）;self.lineView.backgroundColor = [UIColor colorWithWhite:0.8 alpha:0.6];[self.alertView addSubview:self.lineView];//两个按钮if （cancleTitle && sureTitle） {self.cancleBtn = [UIButton buttonWithType:UIButtonTypeSystem];self.cancleBtn.frame = CGRectMake（0, CGRectGetMaxY（self.lineView.frame）, （AlertW-1）/2, 40）;[self.cancleBtn setBackgroundImage:[self imageWithColor:[UIColor colorWithRed:255/255.0 green:255/255.0 blue:255/255.0 alpha:0.2]] forState:UIControlStateNormal];[self.cancleBtn setBackgroundImage:[self imageWithColor:[UIColor colorWithRed:255/255.0 green:255/255.0 blue:255/255.0 alpha:0.2]] forState:UIControlStateSelected];[self.cancleBtn setTitle:cancleTitle forState:UIControlStateNormal];//[self.cancleBtn setTitleColor:[UIColor grayColor] forState:UIControlStateNormal];self.cancleBtn.tag = 1;[self.cancleBtn addTarget:self action:@selector（buttonEvent:） forControlEvents:UIControlEventTouchUpInside];UIBezierPath *maskPath = [UIBezierPath bezierPathWithRoundedRect:self.cancleBtn.bounds byRoundingCorners:UIRectCornerBottomLeft cornerRadii:CGSizeMake（5.0, 5.0）];CAShapeLayer *maskLayer = [[CAShapeLayer alloc] init];maskLayer.frame = self.cancleBtn.bounds;maskLayer.path = maskPath.CGPath;self.cancleBtn.layer.mask = maskLayer;[self.alertView addSubview:self.cancleBtn];}if （cancleTitle && sureTitle） {self.verLineView = [[UIView alloc] init];self.verLineView.frame = CGRectMake（CGRectGetMaxX（self.cancleBtn.frame）, CGRectGetMaxY（self.lineView.frame）, 1, 40）;self.verLineView.backgroundColor = [UIColor colorWithWhite:0.8 alpha:0.6];[self.alertView addSubview:self.verLineView];}if（sureTitle && cancleTitle）{self.sureBtn = [UIButton buttonWithType:UIButtonTypeSystem];self.sureBtn.frame = CGRectMake（CGRectGetMaxX（self.verLineView.frame）, CGRectGetMaxY（self.lineView.frame）, （AlertW-1）/2+1, 40）;[self.sureBtn setBackgroundImage:[self imageWithColor:[UIColor colorWithRed:255/255.0 green:255/255.0 blue:255/255.0 alpha:0.2]] forState:UIControlStateNormal];[self.sureBtn setBackgroundImage:[self imageWithColor:[UIColor colorWithRed:255/255.0 green:255/255.0 blue:255/255.0 alpha:0.2]] forState:UIControlStateSelected];[self.sureBtn setTitle:sureTitle forState:UIControlStateNormal];//[self.sureBtn setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal];self.sureBtn.tag = 2;[self.sureBtn addTarget:self action:@selector（buttonEvent:） forControlEvents:UIControlEventTouchUpInside];UIBezierPath *maskPath = [UIBezierPath bezierPathWithRoundedRect:self.sureBtn.bounds byRoundingCorners:UIRectCornerBottomRight cornerRadii:CGSizeMake（5.0, 5.0）];CAShapeLayer *maskLayer = [[CAShapeLayer alloc] init];maskLayer.frame = self.sureBtn.bounds;maskLayer.path = maskPath.CGPath;self.sureBtn.layer.mask = maskLayer;[self.alertView addSubview:self.sureBtn];}//只有取消按钮if （cancleTitle && ！sureTitle） {self.cancleBtn = [UIButton buttonWithType:UIButtonTypeSystem];self.cancleBtn.frame = CGRectMake（0, CGRectGetMaxY（self.lineView.frame）, AlertW, 40）;[self.cancleBtn setBackgroundImage:[self imageWithColor:[UIColor colorWithRed:255/255.0 green:255/255.0 blue:255/255.0 alpha:0.2]] forState:UIControlStateNormal];[self.cancleBtn setBackgroundImage:[self imageWithColor:[UIColor colorWithRed:255/255.0 green:255/255.0 blue:255/255.0 alpha:0.2]] forState:UIControlStateSelected];[self.cancleBtn setTitle:cancleTitle forState:UIControlStateNormal];//[self.cancleBtn setTitleColor:[UIColor grayColor] forState:UIControlStateNormal];self.cancleBtn.tag = 1;[self.cancleBtn addTarget:self action:@selector（buttonEvent:） forControlEvents:UIControlEventTouchUpInside];UIBezierPath *maskPath = [UIBezierPath bezierPathWithRoundedRect:self.cancleBtn.bounds byRoundingCorners:UIRectCornerBottomLeft | UIRectCornerBottomRight cornerRadii:CGSizeMake（5.0, 5.0）];CAShapeLayer *maskLayer = [[CAShapeLayer alloc] init];maskLayer.frame = self.cancleBtn.bounds;maskLayer.path = maskPath.CGPath;self.cancleBtn.layer.mask = maskLayer;[self.alertView addSubview:self.cancleBtn];}//只有确定按钮if（sureTitle && ！cancleTitle）{self.sureBtn = [UIButton buttonWithType:UIButtonTypeSystem];self.sureBtn.frame = CGRectMake（0, CGRectGetMaxY（self.lineView.frame）, AlertW, 40）;[self.sureBtn setBackgroundImage:[self imageWithColor:[UIColor colorWithRed:255/255.0 green:255/255.0 blue:255/255.0 alpha:0.2]] forState:UIControlStateNormal];[self.sureBtn setBackgroundImage:[self imageWithColor:[UIColor colorWithRed:255/255.0 green:255/255.0 blue:255/255.0 alpha:0.2]] forState:UIControlStateSelected];[self.sureBtn setTitle:sureTitle forState:UIControlStateNormal];//[self.sureBtn setTitleColor:[UIColor grayColor] forState:UIControlStateNormal];self.sureBtn.tag = 2;[self.sureBtn addTarget:self action:@selector（buttonEvent:） forControlEvents:UIControlEventTouchUpInside];UIBezierPath *maskPath = [UIBezierPath bezierPathWithRoundedRect:self.sureBtn.bounds byRoundingCorners:UIRectCornerBottomLeft | UIRectCornerBottomRight cornerRadii:CGSizeMake（5.0, 5.0）];CAShapeLayer *maskLayer = [[CAShapeLayer alloc] init];maskLayer.frame = self.sureBtn.bounds;maskLayer.path = maskPath.CGPath;self.sureBtn.layer.mask = maskLayer;[self.alertView addSubview:self.sureBtn];}//计算高度CGFloat alertHeight = cancleTitle?CGRectGetMaxY（self.cancleBtn.frame）:CGRectGetMaxY（self.sureBtn.frame）;self.alertView.frame = CGRectMake（0, 0, AlertW, alertHeight）;self.alertView.layer.position = self.center;[self addSubview:self.alertView];}return self;}#pragma mark - 弹出 -- （void）showXLAlertView{UIWindow *rootWindow = [UIApplication sharedApplication].keyWindow;[rootWindow addSubview:self];[self creatShowAnimation];}- （void）creatShowAnimation{self.alertView.layer.position = self.center;self.alertView.transform = CGAffineTransformMakeScale（0.90, 0.90）;[UIView animateWithDuration:0.25 delay:0 usingSpringWithDamping:0.8 initialSpringVelocity:1 options:UIViewAnimationOptionCurveLinear animations:^{self.alertView.transform = CGAffineTransformMakeScale（1.0, 1.0）;} completion:^（BOOL finished） {}];}#pragma mark - 回调 -设置只有2 -- > 确定才回调- （void）buttonEvent:（UIButton *）sender{if （sender.tag == 2） {if （self.resultIndex） {self.resultIndex（sender.tag）;}}[self removeFromSuperview];}-（UILabel *）GetAdaptiveLable:（CGRect）rect AndText:（NSString *）contentStr andIsTitle:（BOOL）isTitle{UILabel *contentLbl = [[UILabel alloc] initWithFrame:rect];contentLbl.numberOfLines = 0;contentLbl.text = contentStr;contentLbl.textAlignment = NSTextAlignmentCenter;if （isTitle） {contentLbl.font = [UIFont boldSystemFontOfSize:16.0];}else{contentLbl.font = [UIFont systemFontOfSize:14.0];}NSMutableAttributedString *mAttrStr = [[NSMutableAttributedString alloc] initWithString:contentStr];NSMutableParagraphStyle *mParaStyle = [[NSMutableParagraphStyle alloc] init];mParaStyle.lineBreakMode = NSLineBreakByCharWrapping;[mParaStyle setLineSpacing:3.0];[mAttrStr addAttribute:NSParagraphStyleAttributeName value:mParaStyle range:NSMakeRange（0,[contentStr length]）];[contentLbl setAttributedText:mAttrStr];[contentLbl sizeToFit];return contentLbl;}-（UIImage *）imageWithColor:（UIColor *）color{CGRect rect = CGRectMake（0.0f, 0.0f, 1.0f, 1.0f）;UIGraphicsBeginImageContext（rect.size）;CGContextRef context = UIGraphicsGetCurrentContext（）;CGContextSetFillColorWithColor（context, [color CGColor]）;CGContextFillRect（context, rect）;UIImage *theImage = UIGraphicsGetImageFromCurrentImageContext（）;UIGraphicsEndImageContext（）;return theImage;}@end

在需要使用的地方直接调用

XLAlertView *xlAlertView = [[XLAlertView alloc] initWithTitle:@"自定义UIAlertView" message:@"不喜勿喷，大神多多指导。不胜感激" sureBtn:@"确认" cancleBtn:@"取消"];xlAlertView.resultIndex = ^（NSInteger index）{//回调---处理一系列动作};[xlAlertView showXLAlertView];

总结
以上就是这篇文章的全部内容了，希望本文的内容对各位iOS开发们能有所帮助，如果有疑问大家可以留言交流，谢谢大家对脚本之家的支持。