UIAlertView是消息提示框UI控件，对于消息提示框的中的按钮事件采用的是事件委托机制。要实现事件响应，需要实现对应协议、重写函数达到目的。
本文介绍
1、UIAlertView+Block，简化代码
2、自定义Alert+Block 简单的自定义弹框封装
正常写法
UIAlertView*alert = [[UIAlertView alloc]initWithTitle:@"提示"
message:@"这是一个警告框！"
delegate:self
cancelButtonTitle:@"确定"
otherButtonTitles:nil];
[alert show];
//根据被点击按钮的索引处理点击事件
-(void)alertView:(UIAlertView*)alertView clickedButtonAtIndex:(NSInteger)buttonIndex{
NSLog(@"点击的按钮是第%ld个",buttonIndex);
}
能不能偷懒？那就试试自定义Category
UIAlertView+Block
#import <UIKit/UIKit.h>
//点以一个点击回调Block
typedef void(^SmileAlertClickedBlock)(NSInteger buttonIndex);
@interface SmileAlert : UIView
@property (nonatomic, copy) SmileAlertClickedBlock alertViewCallBackBlock;
+ (void)creat_AlertViewWithClickBlock:(SmileAlertClickedBlock)alertViewClickBackBlock title:(NSString *)title message:(NSString *)message cancelButtonStr:(NSString *)cancelButtonStr otherButtonTitle:(NSString *)otherButtonTitle;
@end
UIAlertView+Block.m
#import "UIAlertView+Block.h"
#import <objc/runtime.h>
static NSString *UIAlertViewKey = @"UIAlertViewKey";
@implementation UIAlertView (Block)
+ (void)creat_AlertViewWithClickBlock:(UIAlertViewClickedBlock)alertViewClickBackBlock title:(NSString *)title message:(NSString *)message cancelButtonStr:(NSString *)cancelButtonStr otherButtonTitles:(NSString *)otherButtonTitles, ...NS_REQUIRES_NIL_TERMINATION{
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:title message:message delegate:nil cancelButtonTitle:cancelButtonStr otherButtonTitles: otherButtonTitles, nil];
NSString *other = nil;
va_list args;
if (otherButtonTitles) {
va_start(args, otherButtonTitles);
while ((other = va_arg(args, NSString*))) {
[alert addButtonWithTitle:other];
}
va_end(args);
}
alert.delegate = alert;
[alert show];
alert.alertViewCallBackBlock = alertViewClickBackBlock;
}
- (void)setAlertViewCallBackBlock:(UIAlertViewClickedBlock)alertViewCallBackBlock {
[self willChangeValueForKey:@"callbackBlock"];
objc_setAssociatedObject(self, &UIAlertViewKey, alertViewCallBackBlock, OBJC_ASSOCIATION_COPY);
[self didChangeValueForKey:@"callbackBlock"];
}
- (UIAlertViewClickedBlock)alertViewCallBackBlock {
return objc_getAssociatedObject(self, &UIAlertViewKey);
}
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex {
if (self.alertViewCallBackBlock) {
self.alertViewCallBackBlock(buttonIndex);
}
}
@end
调用
[UIAlertView creat_AlertViewWithClickBlock:^(NSInteger buttonIndex) {
NSLog(@"点击的按钮是第%ld个",buttonIndex);
} title:@"标题" message:@"今天天气不错！！💗" cancelButtonStr:@"呵呵" otherButtonTitles:@"嗯嗯",@"思密达", nil];
效果：
AE7282E5-1E57-4709-A38F-D108BC8B0482.png
]
二、简单的自定义弹框SmileAlert
和UIAlertView+Block思路一样，主要是通过Block回传点击索引，代码简单，直接贴上：
SmileAlert.h
#import <UIKit/UIKit.h>
//点以一个点击回调Block
typedef void(^SmileAlertClickedBlock)(NSInteger buttonIndex);
@interface SmileAlert : UIView
@property (nonatomic, copy) SmileAlertClickedBlock alertViewCallBackBlock;
+ (void)creat_AlertViewWithClickBlock:(SmileAlertClickedBlock)alertViewClickBackBlock title:(NSString *)title message:(NSString *)message cancelButtonStr:(NSString *)cancelButtonStr otherButtonTitle:(NSString *)otherButtonTitle;
@end
SmileAlert.m
//
// SmileAlert.m
// SmileHelper
//
// Created by 微笑吧阳光 on 2016/2/28.
// Copyright © 2016年 www.imee.vc. All rights reserved.
//
#import "SmileAlert.h"
#import <Accelerate/Accelerate.h>
#import "AppDelegate.h"
#import "Macros.h"
#import "SmileAlertContentView.h"
#define kAppDelegate (AppDelegate *)[[UIApplication sharedApplication] delegate]
#define KiOS7OrLater ([[[UIDevice currentDevice] systemVersion] floatValue] >= 7)
@interface SmileAlert()
@property (nonatomic, strong) UIImageView *screenShotView;
@property (nonatomic, strong) UIImageView *alertPopView;
@property (nonatomic, copy) NSString *titleStr;
@property (nonatomic, copy) NSString *messageStr;
@property (nonatomic, copy) NSString *cancelBtnStr;
@property (nonatomic, copy) NSString *sureBtnStr;
@end
@implementation SmileAlert
+ (void)creat_AlertViewWithClickBlock:(SmileAlertClickedBlock)alertViewClickBackBlock title:(NSString *)title message:(NSString *)message cancelButtonStr:(NSString *)cancelButtonStr otherButtonTitle:(NSString *)otherButtonTitle{
SmileAlert * alert = [[SmileAlert alloc]initWithTitle:title message:message cancelButtonStr:cancelButtonStr otherButtonTitle:otherButtonTitle AndClickBlock:alertViewClickBackBlock];
[alert showAlert];
}
-(instancetype)initWithTitle:(NSString*)title message:(NSString *)message cancelButtonStr:(NSString *)cancelButtonStr otherButtonTitle:(NSString *)otherButtonTitle AndClickBlock:(SmileAlertClickedBlock)alertViewClickBackBlock
{
self=[super initWithFrame:[UIScreen mainScreen].bounds];
if (self) {
self.titleStr = title;
self.messageStr = message;
self.cancelBtnStr = cancelButtonStr;
self.sureBtnStr = otherButtonTitle;
[self creatUi];
self.alertViewCallBackBlock = alertViewClickBackBlock;
}
return self;
}
-(void)creatUi{
[self addScreenShot];
[self addPopAlertView];
}
-(void)addPopAlertView{
SmileAlertContentView * contentView = [[[NSBundle mainBundle]loadNibNamed:@"SmileAlertContentView" owner:self options:nil]lastObject];
contentView.frame = CGRectMake(0, 0, self.alertPopView.frame.size.width, self.alertPopView.frame.size.height);
contentView.center = CGPointMake(self.alertPopView.frame.size.width/2, self.alertPopView.frame.size.height/2);
contentView.titleStr.text = self.titleStr;
contentView.contentStr.text = self.messageStr;
[contentView.cancelBtn setTitle:self.cancelBtnStr forState:UIControlStateNormal];
[contentView.sureBtn setTitle:self.sureBtnStr forState:UIControlStateNormal];
[contentView returnbuttonIndex:^(NSInteger buttonIndex) {
// NSLog(@"💗💗----%ld",(long)buttonIndex);
if (self.alertViewCallBackBlock != nil) {
self.alertViewCallBackBlock(buttonIndex);
}
[self hideAlert];
}];
[self.alertPopView addSubview:contentView];
[self addSubview:self.alertPopView];
}
#pragma mark - 出来吧，弹出框
- (void)showAlert{
AppDelegate*app=kAppDelegate;
[app.window addSubview:self];
self.backgroundColor = [UIColor blackColor];
CGFloat duration = 0.3;
// for (UIButton *btn in self.alertView.subviews) {
// btn.userInteractionEnabled = NO;
// }
self.alertPopView.alpha = 0;
self.alertPopView.alpha = 0;
[UIView animateWithDuration:duration delay:0 options:UIViewAnimationOptionCurveLinear animations:^{
self.screenShotView.alpha = 1;
self.alertPopView.alpha = 1.0;
} completion:^(BOOL finished) {
for (UIButton *btn in self.subviews) {
btn.userInteractionEnabled = YES;
}
}];
if (KiOS7OrLater) {
CAKeyframeAnimation *animation = [CAKeyframeAnimation animationWithKeyPath:@"transform.scale"];
animation.values = @[@(0.8), @(1.05), @(1.1), @(1)];
animation.keyTimes = @[@(0), @(0.3), @(0.5), @(1.0)];
animation.timingFunctions = @[[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionLinear], [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionLinear], [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionLinear], [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionLinear]];
animation.duration = duration;
[self.alertPopView.layer addAnimation:animation forKey:@"bouce"];
} else {
self.alertPopView.transform = CGAffineTransformMakeScale(0.8, 0.8);
[UIView animateWithDuration:duration * 0.3 delay:0 options:UIViewAnimationOptionCurveLinear animations:^{
self.alertPopView.transform = CGAffineTransformMakeScale(1.05, 1.05);
} completion:^(BOOL finished) {
[UIView animateWithDuration:duration * 0.2 delay:0 options:UIViewAnimationOptionCurveLinear animations:^{
self.alertPopView.transform = CGAffineTransformMakeScale(1.1, 1.1);
} completion:^(BOOL finished) {
[UIView animateWithDuration:duration * 0.5 delay:0 options:UIViewAnimationOptionCurveLinear animations:^{
self.alertPopView.transform = CGAffineTransformMakeScale(1, 1);
} completion:nil];
}];
}];
}
}
//消失吧，提示框
- (void)hideAlert{
CGFloat duration = 0.2;
[UIView animateWithDuration:duration delay:0 options:UIViewAnimationOptionCurveLinear animations:^{
self.screenShotView.alpha = 0;
self.alertPopView.alpha = 0;
} completion:^(BOOL finished) {
[self.screenShotView removeFromSuperview];
[self removeFromSuperview];
}];
[UIView animateWithDuration:duration delay:0 options:UIViewAnimationOptionCurveEaseIn animations:^{
self.alertPopView.transform = CGAffineTransformMakeScale(0.4, 0.4);
} completion:^(BOOL finished) {
self.alertPopView.transform = CGAffineTransformMakeScale(1, 1);
}];
}
//添加一个模糊的效果
- (void)addScreenShot{
UIWindow *screenWindow = [UIApplication sharedApplication].windows.firstObject;
UIGraphicsBeginImageContext(screenWindow.frame.size);
[screenWindow.layer renderInContext:UIGraphicsGetCurrentContext()];
UIImage *viewImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
UIImage *originalImage = nil;
if (KiOS7OrLater) {
originalImage = viewImage;
} else {
originalImage = [UIImage imageWithCGImage:CGImageCreateWithImageInRect(viewImage.CGImage, CGRectMake(0, 20, 320, 460))];
}
CGFloat blurRadius = 4;
UIColor *tintColor = [UIColor clearColor];
CGFloat saturationDeltaFactor = 1;
UIImage *maskImage = nil;
CGRect imageRect = { CGPointZero, originalImage.size };
UIImage *effectImage = originalImage;
BOOL hasBlur = blurRadius > __FLT_EPSILON__;
BOOL hasSaturationChange = fabs(saturationDeltaFactor - 1.) > __FLT_EPSILON__;
if (hasBlur || hasSaturationChange) {
UIGraphicsBeginImageContextWithOptions(originalImage.size, NO, [[UIScreen mainScreen] scale]);
CGContextRef effectInContext = UIGraphicsGetCurrentContext();
CGContextScaleCTM(effectInContext, 1.0, -1.0);
CGContextTranslateCTM(effectInContext, 0, -originalImage.size.height);
CGContextDrawImage(effectInContext, imageRect, originalImage.CGImage);
vImage_Buffer effectInBuffer;
effectInBuffer.data = CGBitmapContextGetData(effectInContext);
effectInBuffer.width = CGBitmapContextGetWidth(effectInContext);
effectInBuffer.height = CGBitmapContextGetHeight(effectInContext);
effectInBuffer.rowBytes = CGBitmapContextGetBytesPerRow(effectInContext);
UIGraphicsBeginImageContextWithOptions(originalImage.size, NO, [[UIScreen mainScreen] scale]);
CGContextRef effectOutContext = UIGraphicsGetCurrentContext();
vImage_Buffer effectOutBuffer;
effectOutBuffer.data = CGBitmapContextGetData(effectOutContext);
effectOutBuffer.width = CGBitmapContextGetWidth(effectOutContext);
effectOutBuffer.height = CGBitmapContextGetHeight(effectOutContext);
effectOutBuffer.rowBytes = CGBitmapContextGetBytesPerRow(effectOutContext);
if (hasBlur) {
CGFloat inputRadius = blurRadius * [[UIScreen mainScreen] scale];
uint32_t radius = floor(inputRadius * 3. * sqrt(2 * M_PI) / 4 + 0.5);
if (radius % 2 != 1) {
radius += 1;
}
vImageBoxConvolve_ARGB8888(&effectInBuffer, &effectOutBuffer, NULL, 0, 0, radius, radius, 0, kvImageEdgeExtend);
vImageBoxConvolve_ARGB8888(&effectOutBuffer, &effectInBuffer, NULL, 0, 0, radius, radius, 0, kvImageEdgeExtend);
vImageBoxConvolve_ARGB8888(&effectInBuffer, &effectOutBuffer, NULL, 0, 0, radius, radius, 0, kvImageEdgeExtend);
}
BOOL effectImageBuffersAreSwapped = NO;
if (hasSaturationChange) {
CGFloat s = saturationDeltaFactor;
CGFloat floatingPointSaturationMatrix[] = {
0.0722 + 0.9278 * s, 0.0722 - 0.0722 * s, 0.0722 - 0.0722 * s, 0,
0.7152 - 0.7152 * s, 0.7152 + 0.2848 * s, 0.7152 - 0.7152 * s, 0,
0.2126 - 0.2126 * s, 0.2126 - 0.2126 * s, 0.2126 + 0.7873 * s, 0,
0, 0, 0, 1,
};
const int32_t divisor = 256;
NSUInteger matrixSize = sizeof(floatingPointSaturationMatrix)/sizeof(floatingPointSaturationMatrix[0]);
int16_t saturationMatrix[matrixSize];
for (NSUInteger i = 0; i < matrixSize; ++i) {
saturationMatrix[i] = (int16_t)roundf(floatingPointSaturationMatrix[i] * divisor);
}
if (hasBlur) {
vImageMatrixMultiply_ARGB8888(&effectOutBuffer, &effectInBuffer, saturationMatrix, divisor, NULL, NULL, kvImageNoFlags);
effectImageBuffersAreSwapped = YES;
}
else {
vImageMatrixMultiply_ARGB8888(&effectInBuffer, &effectOutBuffer, saturationMatrix, divisor, NULL, NULL, kvImageNoFlags);
}
}
if (!effectImageBuffersAreSwapped)
effectImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
if (effectImageBuffersAreSwapped)
effectImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
}
UIGraphicsBeginImageContextWithOptions(originalImage.size, NO, [[UIScreen mainScreen] scale]);
CGContextRef outputContext = UIGraphicsGetCurrentContext();
CGContextScaleCTM(outputContext, 1.0, -1.0);
CGContextTranslateCTM(outputContext, 0, -originalImage.size.height);
CGContextDrawImage(outputContext, imageRect, originalImage.CGImage);
if (hasBlur) {
CGContextSaveGState(outputContext);
if (maskImage) {
CGContextClipToMask(outputContext, imageRect, maskImage.CGImage);
}
CGContextDrawImage(outputContext, imageRect, effectImage.CGImage);
CGContextRestoreGState(outputContext);
}
if (tintColor) {
CGContextSaveGState(outputContext);
CGContextSetFillColorWithColor(outputContext, tintColor.CGColor);
CGContextFillRect(outputContext, imageRect);
CGContextRestoreGState(outputContext);
}
UIImage *outputImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
self.screenShotView = [[UIImageView alloc] initWithImage:outputImage];
self.screenShotView.frame =[UIScreen mainScreen].bounds;
[self addSubview:self.screenShotView];
UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(dismiss:)];
[self.screenShotView addGestureRecognizer:tap];
}
#pragma mark - 点击事件
- (void)dismiss:(UITapGestureRecognizer *)tap {
[self hideAlert];
}
#pragma mark 懒加载初始化
- (UIImageView *)alertPopView {
if (_alertPopView == nil) {
// _alertPopView = [[UIImageView alloc]initWithImage:[UIImage imageNamed:@"share_分享背景"]];
_alertPopView = [[UIImageView alloc]initWithImage:nil];
_alertPopView.backgroundColor = [UIColor whiteColor];
_alertPopView.frame = CGRectMake(0, 0, KScreenWidth-60, KScreenHeight/4);
_alertPopView.center = CGPointMake( KScreenWidth/ 2, KScreenHeight / 2);
ViewRadius(_alertPopView, 5);
}
return _alertPopView;
}
@end
其中SmileAlertContentView为一个xib文件，代码就不贴了，需要的可下载源码看下
调用
[SmileAlert creat_AlertViewWithClickBlock:^(NSInteger buttonIndex) {
NSLog(@"SmileAlert点击 第%ld个",buttonIndex);
} title:@"SmileAlert" message:@"分层是表示将功能进行有序的分组：应用程序专用功能位于上层，跨越应用程序领域的功能位于中层，而配置环境专用功能位于低层。分层从逻辑上将子系统划分成许多集合，而层间关系的形成要遵循一定的规则。"
cancelButtonStr:@"🐘取消"
otherButtonTitle:@"💗确定"];
效果
027CDEA9-E376-43C3-A264-A00125A84363.png
⬇️⬇️⬇️特别指出的一段代码是添加模糊效果的背景 ⬇️⬇️⬇️⬇️⬇️⬇️
//添加一个模糊的效果
- (void)addScreenShot{
UIWindow *screenWindow = [UIApplication sharedApplication].windows.firstObject;
UIGraphicsBeginImageContext(screenWindow.frame.size);
[screenWindow.layer renderInContext:UIGraphicsGetCurrentContext()];
UIImage *viewImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
UIImage *originalImage = nil;
if (KiOS7OrLater) {
originalImage = viewImage;
} else {
originalImage = [UIImage imageWithCGImage:CGImageCreateWithImageInRect(viewImage.CGImage, CGRectMake(0, 20, 320, 460))];
}
CGFloat blurRadius = 4;
UIColor *tintColor = [UIColor clearColor];
CGFloat saturationDeltaFactor = 1;
UIImage *maskImage = nil;
CGRect imageRect = { CGPointZero, originalImage.size };
UIImage *effectImage = originalImage;
BOOL hasBlur = blurRadius > __FLT_EPSILON__;
BOOL hasSaturationChange = fabs(saturationDeltaFactor - 1.) > __FLT_EPSILON__;
if (hasBlur || hasSaturationChange) {
UIGraphicsBeginImageContextWithOptions(originalImage.size, NO, [[UIScreen mainScreen] scale]);
CGContextRef effectInContext = UIGraphicsGetCurrentContext();
CGContextScaleCTM(effectInContext, 1.0, -1.0);
CGContextTranslateCTM(effectInContext, 0, -originalImage.size.height);
CGContextDrawImage(effectInContext, imageRect, originalImage.CGImage);
vImage_Buffer effectInBuffer;
effectInBuffer.data = CGBitmapContextGetData(effectInContext);
effectInBuffer.width = CGBitmapContextGetWidth(effectInContext);
effectInBuffer.height = CGBitmapContextGetHeight(effectInContext);
effectInBuffer.rowBytes = CGBitmapContextGetBytesPerRow(effectInContext);
UIGraphicsBeginImageContextWithOptions(originalImage.size, NO, [[UIScreen mainScreen] scale]);
CGContextRef effectOutContext = UIGraphicsGetCurrentContext();
vImage_Buffer effectOutBuffer;
effectOutBuffer.data = CGBitmapContextGetData(effectOutContext);
effectOutBuffer.width = CGBitmapContextGetWidth(effectOutContext);
effectOutBuffer.height = CGBitmapContextGetHeight(effectOutContext);
effectOutBuffer.rowBytes = CGBitmapContextGetBytesPerRow(effectOutContext);
if (hasBlur) {
CGFloat inputRadius = blurRadius * [[UIScreen mainScreen] scale];
uint32_t radius = floor(inputRadius * 3. * sqrt(2 * M_PI) / 4 + 0.5);
if (radius % 2 != 1) {
radius += 1;
}
vImageBoxConvolve_ARGB8888(&effectInBuffer, &effectOutBuffer, NULL, 0, 0, radius, radius, 0, kvImageEdgeExtend);
vImageBoxConvolve_ARGB8888(&effectOutBuffer, &effectInBuffer, NULL, 0, 0, radius, radius, 0, kvImageEdgeExtend);
vImageBoxConvolve_ARGB8888(&effectInBuffer, &effectOutBuffer, NULL, 0, 0, radius, radius, 0, kvImageEdgeExtend);
}
BOOL effectImageBuffersAreSwapped = NO;
if (hasSaturationChange) {
CGFloat s = saturationDeltaFactor;
CGFloat floatingPointSaturationMatrix[] = {
0.0722 + 0.9278 * s, 0.0722 - 0.0722 * s, 0.0722 - 0.0722 * s, 0,
0.7152 - 0.7152 * s, 0.7152 + 0.2848 * s, 0.7152 - 0.7152 * s, 0,
0.2126 - 0.2126 * s, 0.2126 - 0.2126 * s, 0.2126 + 0.7873 * s, 0,
0, 0, 0, 1,
};
const int32_t divisor = 256;
NSUInteger matrixSize = sizeof(floatingPointSaturationMatrix)/sizeof(floatingPointSaturationMatrix[0]);
int16_t saturationMatrix[matrixSize];
for (NSUInteger i = 0; i < matrixSize; ++i) {
saturationMatrix[i] = (int16_t)roundf(floatingPointSaturationMatrix[i] * divisor);
}
if (hasBlur) {
vImageMatrixMultiply_ARGB8888(&effectOutBuffer, &effectInBuffer, saturationMatrix, divisor, NULL, NULL, kvImageNoFlags);
effectImageBuffersAreSwapped = YES;
}
else {
vImageMatrixMultiply_ARGB8888(&effectInBuffer, &effectOutBuffer, saturationMatrix, divisor, NULL, NULL, kvImageNoFlags);
}
}
if (!effectImageBuffersAreSwapped)
effectImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
if (effectImageBuffersAreSwapped)
effectImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
}
UIGraphicsBeginImageContextWithOptions(originalImage.size, NO, [[UIScreen mainScreen] scale]);
CGContextRef outputContext = UIGraphicsGetCurrentContext();
CGContextScaleCTM(outputContext, 1.0, -1.0);
CGContextTranslateCTM(outputContext, 0, -originalImage.size.height);
CGContextDrawImage(outputContext, imageRect, originalImage.CGImage);
if (hasBlur) {
CGContextSaveGState(outputContext);
if (maskImage) {
CGContextClipToMask(outputContext, imageRect, maskImage.CGImage);
}
CGContextDrawImage(outputContext, imageRect, effectImage.CGImage);
CGContextRestoreGState(outputContext);
}
if (tintColor) {
CGContextSaveGState(outputContext);
CGContextSetFillColorWithColor(outputContext, tintColor.CGColor);
CGContextFillRect(outputContext, imageRect);
CGContextRestoreGState(outputContext);
}
UIImage *outputImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
self.screenShotView = [[UIImageView alloc] initWithImage:outputImage];
self.screenShotView.frame =[UIScreen mainScreen].bounds;
[self addSubview:self.screenShotView];
UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(dismiss:)];
[self.screenShotView addGestureRecognizer:tap];
}
我是写代码的凡，如有错误，欢迎指正！🙂🙂🙂
