iOS之自定义AlertView的传参问题

一,说明:

  最近在开发SDK的过程中,有一个需求是:点击按钮,弹框显示姓名和身份证号,同时在弹框中可以修改姓名和身份证号.  

 分析:需要自定义一个AlertView 和双向传值(需要用到Block).

自定义的样式为下图:

//  CommonAlertView.h//  LCAlertView////  Created by care on 16/11/8.//  Copyright © 2016年 luochuan. All rights reserved.//#import <UIKit/UIKit.h>typedef void(^cancelBlock)();typedef void(^sureBlock)(NSString*name,NSString*idnumber);@interface CommonAlertView : UIView@property(nonatomic, strong)cancelBlock cancel_block;@property(nonatomic, strong)sureBlock sure_block;+(instancetype)alertViewWithCancelbtnClicked:(cancelBlock) cancelBlock andSureBtnClicked:(sureBlock) sureBlock withName:(NSString *)name withidcard:(NSString *)idnumber;@end

////  CommonAlertView.m//  LCAlertView////  Created by care on 16/11/8.//  Copyright © 2016年 luochuan. All rights reserved.//#import "CommonAlertView.h"#define LCWINDOWS [UIScreen mainScreen].bounds.size@interface CommonAlertView()<UITextFieldDelegate>@property (nonatomic, strong)UIView *blackView;//背景半透明遮罩@property (strong,nonatomic)UIView * alertview;//弹框@property (nonatomic, strong)UILabel *nameLable;//姓名Lable@property (nonatomic, strong)UILabel *idcardLable;//身份证号lable@property (nonatomic, strong)UITextField *nameTextFild;//姓名输入框@property (nonatomic, strong)UITextField *idcardTextFild;//身份证号输入号@property (nonatomic, strong)UIButton *cancelButton;//取消按钮@property (nonatomic, strong)UIButton *sureButton;//确定按钮@property (nonatomic, strong)NSString *name;//原始姓名的参数@property (nonatomic, strong)NSString *idnumber;//原始身份证号的参数@property (nonatomic, strong)UILabel *line1Lable;//灰色横线@property (nonatomic, strong)UILabel *line2Lable;//灰色竖线@end@implementation CommonAlertView- (instancetype)initWithFrame:(CGRect)frame{    self=[super initWithFrame:frame];    if (self) {        _blackView = [[UIView alloc]initWithFrame:CGRectMake(0, 0, LCWINDOWS.width, LCWINDOWS.height+64)];        _blackView.backgroundColor = [UIColor blackColor];        _blackView.alpha = 0.5;        UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(blackClick)];        tap.enabled=NO;        [self.blackView addGestureRecognizer:tap];        [self addSubview:_blackView];        //创建alert        self.alertview = [[UIView alloc]initWithFrame:CGRectMake(0, 0, 288, 183)];        self.alertview.center = self.center;        self.alertview.backgroundColor = [UIColor whiteColor];        self.alertview.layer.cornerRadius=5.0f;        [self addSubview:_alertview];        [self animationAlert:self.alertview];    }    return self;}//在弹框的view上布局添加子view(如果想改变弹框里面的view样式布局,在此方法中修改)- (void)layoutSubviews{    [super layoutSubviews];        _nameLable=[[UILabel alloc]initWithFrame:CGRectMake(10, 20, 68, 30)];    _nameLable.textAlignment=NSTextAlignmentLeft;    _nameLable.textColor=[self getColor:@"666666"];    _nameLable.text=@"姓      名:";    _nameLable.adjustsFontSizeToFitWidth=YES;    [self.alertview addSubview:_nameLable];    _nameTextFild=[[UITextField alloc]initWithFrame:CGRectMake(88, 20, 180, 30)];    _nameTextFild.textAlignment=NSTextAlignmentLeft;    _nameTextFild.borderStyle=UITextBorderStyleNone;    _nameTextFild.layer.borderWidth=1.0f;    _nameTextFild.layer.borderColor=[self getColor:@"dadada"].CGColor;    _nameTextFild.textColor=[UIColor blackColor];    _nameTextFild.secureTextEntry=NO;    _nameTextFild.delegate=self;    _nameTextFild.clearButtonMode=UITextFieldViewModeWhileEditing;    if (self.name.length!=0) {        _nameTextFild.text=self.name;    }    [self.alertview addSubview:_nameTextFild];        _idcardLable=[[UILabel alloc]initWithFrame:CGRectMake(10, CGRectGetMaxY(_nameLable.frame)+33, 68, 30)];    _idcardLable.textAlignment=NSTextAlignmentLeft;    _idcardLable.textColor=[self getColor:@"666666"];    _idcardLable.text=@"身份证号:";    _idcardLable.adjustsFontSizeToFitWidth=YES;        [self.alertview addSubview:_idcardLable];    _idcardTextFild=[[UITextField alloc]initWithFrame:CGRectMake(88, CGRectGetMaxY(_nameTextFild.frame)+33, 180, 30)];    _idcardTextFild.textAlignment=NSTextAlignmentLeft;    _idcardTextFild.borderStyle=UITextBorderStyleNone;    _idcardTextFild.layer.borderWidth=1.0f;    _idcardTextFild.layer.borderColor=[self getColor:@"dadada"].CGColor;    _idcardTextFild.textColor=[UIColor blackColor];    _idcardTextFild.secureTextEntry=NO;    _idcardTextFild.delegate=self;    _idcardTextFild.clearButtonMode=UITextFieldViewModeWhileEditing;    if (self.idnumber.length!=0) {        _idcardTextFild.text=self.idnumber;    }    [self.alertview addSubview:_idcardTextFild];    _line1Lable=[[UILabel alloc]initWithFrame:CGRectMake(0, CGRectGetMaxY(_idcardLable.frame)+19, self.alertview.bounds.size.width, 1)];    _line1Lable.backgroundColor=[self getColor:@"e5e5e5"];    [self.alertview addSubview:_line1Lable];    _line2Lable=[[UILabel alloc]initWithFrame:CGRectMake(self.alertview.bounds.size.width/2-0.5, CGRectGetMaxY(_idcardLable.frame)+20, 1, 50)];    _line2Lable.backgroundColor=[self getColor:@"e5e5e5"];    [self.alertview addSubview:_line2Lable];        _cancelButton=[UIButton buttonWithType:UIButtonTypeCustom];    _cancelButton.backgroundColor=[UIColor whiteColor];    _cancelButton.frame=CGRectMake(0, CGRectGetMaxY(_idcardLable.frame)+20, self.alertview.bounds.size.width/2-0.5, 45);    [_cancelButton setTitle:@"返  回" forState:UIControlStateNormal];    [_cancelButton setTitleColor:[self getColor:@"333333"] forState:UIControlStateNormal];    [_cancelButton setBackgroundColor:[UIColor whiteColor]];    [_cancelButton addTarget:self action:@selector(cancelBtnClicked) forControlEvents:UIControlEventTouchUpInside];    [self.alertview addSubview:_cancelButton];    _sureButton=[UIButton buttonWithType:UIButtonTypeCustom];    _sureButton.backgroundColor=[UIColor whiteColor];    _sureButton.frame=CGRectMake(self.alertview.bounds.size.width/2+0.5, CGRectGetMaxY(_idcardTextFild.frame)+20, self.alertview.bounds.size.width/2, 45);    [_sureButton setTitle:@"修  改" forState:UIControlStateNormal];    [_sureButton setBackgroundColor:[UIColor whiteColor]];    [_sureButton setTitleColor:[self getColor:@"f4b249"] forState:UIControlStateNormal];    [_sureButton addTarget:self action:@selector(sureBtnClicked) forControlEvents:UIControlEventTouchUpInside];    [self.alertview addSubview:_sureButton];    }- (BOOL)textFieldShouldReturn:(UITextField *)textField{    return YES;}//背景遮罩加点击手势,不做任何的处理- (void)blackClick{    }//创建+(instancetype)alertViewWithCancelbtnClicked:(cancelBlock) cancelBlock andSureBtnClicked:(sureBlock) sureBlock withName:(NSString *)name withidcard:(NSString *)idnumber{    CommonAlertView *alertView=[[CommonAlertView alloc]initWithFrame:CGRectMake(0, 0, LCWINDOWS.width,LCWINDOWS.height)];    alertView.center=CGPointMake(LCWINDOWS.width/2, LCWINDOWS.height/2-64);//view的中点    alertView.cancel_block=cancelBlock;//取消block    alertView.sure_block=sureBlock;//确定block    alertView.name=[NSString stringWithFormat:@"%@",name];//将传入的姓名参数接收    alertView.idnumber=[NSString stringWithFormat:@"%@",idnumber];//将传入的身份证号参数接收        return alertView;    }//name字符串属性重写(注意:NSString类型的属性都要重写,不然会出现无法显示到界面的情况)- (void)setName:(NSString *)name{        _name=[NSString stringWithFormat:@"%@",name];}//idnumber字符串属性重写- (void)setIdnumber:(NSString *)idnumber{        _idnumber=[NSString stringWithFormat:@"%@",idnumber];}//取消按钮点击- (void)cancelBtnClicked{    [UIView animateWithDuration:0.3 animations:^{        self.alpha=0;    } completion:^(BOOL finished) {        [self removeFromSuperview];        self.alertview=nil;        self.cancel_block();    }];        }//确定按钮点击- (void)sureBtnClicked{    //如果输入的姓名和身份证号不符合正则表达式,则return;(这里不做验证,请根据项目需求修改)    [UIView animateWithDuration:0.3 animations:^{        self.alpha=0;    } completion:^(BOOL finished) {        [self removeFromSuperview];        self.alertview=nil;        //将新输入的姓名和身份证号值传出去.        self.sure_block(_nameTextFild.text,_idcardTextFild.text);    }];    }//弹框动画自定义(可以修改参数改变动画)- (void)animationAlert:(UIView *)view{    CAKeyframeAnimation *popAnimation=[CAKeyframeAnimation animationWithKeyPath:@"transform"];    popAnimation.duration=0.6;    popAnimation.values=@[[NSValue valueWithCATransform3D:CATransform3DMakeScale(0.01f, 0.01f, 1.0f)],[NSValue valueWithCATransform3D:CATransform3DMakeScale(1.1f, 1.1f, 1.0f)],[NSValue valueWithCATransform3D:CATransform3DMakeScale(0.9f, 0.9f, 1.0f)],[NSValue valueWithCATransform3D:CATransform3DIdentity]];    popAnimation.keyTimes=@[@0.0f,@0.5f,@0.75f];    popAnimation.timingFunctions=@[[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut],[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut],[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut]];    [view.layer addAnimation:popAnimation forKey:nil];    }//十六进制颜色转换- (UIColor *)getColor:(NSString*)hexColor{    unsigned int red,green,blue;    NSRange range;    range.length = 2;        range.location = 0;    [[NSScanner scannerWithString:[hexColor substringWithRange:range]]scanHexInt:&red];        range.location = 2;    [[NSScanner scannerWithString:[hexColor substringWithRange:range]]scanHexInt:&green];        range.location = 4;    [[NSScanner scannerWithString:[hexColor substringWithRange:range]]scanHexInt:&blue];        return [UIColor colorWithRed:(float)(red/255.0f)green:(float)(green / 255.0f) blue:(float)(blue / 255.0f)alpha:1.0f];}@end

调用,在viewController.m中导入CommonAlertView.h并调用方法,代码如下:

#import "ViewController.h"#import "CommonAlertView.h"@interface ViewController (){    NSString *oriName;    NSString *oriIdnumber;}@end@implementation ViewController- (void)viewDidLoad {    [super viewDidLoad];        oriName=@"luochuanAD";    oriIdnumber=@"110110110110";    }- (void)viewDidAppear:(BOOL)animated{    [super viewDidAppear:animated];    CommonAlertView *alertView=[CommonAlertView alertViewWithCancelbtnClicked:^{            } andSureBtnClicked:^(NSString *name, NSString *idnumber) {        NSLog(@"-------确定按钮点击后 姓名和身份证号参数----%@,%@",name,idnumber);        //保存修改后的姓名和身份证号        oriName=name;        oriIdnumber=idnumber;            } withName:oriName withidcard:oriIdnumber];    UIView *keywindow=[UIApplication sharedApplication].keyWindow;    [keywindow addSubview:alertView];}@end

代码分析;

在CommonAlertView.h中定义了弹框的返回和修改按钮的Block用来处理按钮的点击事件. 点击修改按钮需要将姓名和身份证号的值传出去,所以修改按钮的block会有2个参数(注:根据你项目的需求,修改参数的多少). 接下来,就是创建自意义View的方法,我用类方法,带有4个参数:2个是弹框的返回和修改按钮事件的block,和从ViewController中传入的要显示在弹框的姓名和身份证号参数.

在

alertview

 中就是添加控件,布局和处理按钮的点击事件.

现在看一下自定义Alert的层级:

initWithFrame:

我在CommonAlertView.m
中的initWithFrame:方法中中创建遮罩blackView和弹框alertView,同时给alertview的加上弹出的动画(注:这里的动画可自定义,方法为animationAlert:). 

在layoutSubviews的方法中添加控件到弹框alertView上并布局.

代码片段如下:

initWithFrame:

在

+(instancetype)alertViewWithCancelbtnClicked:(cancelBlock) cancelBlock andSureBtnClicked:(sureBlock) sureBlock withName:(NSString *)name withidcard:(NSString *)idnumber中定义2个NSString属性分别接收name和idnumber的值,并对定义的2个属性重写,否则会无法显示. 

在返回和修改按钮的点击事件中将block块传出去.在修改按钮的事件中要将姓名和身份证号的输入框中的值带入到sure_block中.

http://

二,结束语

这个自定义alertView很简单. 同时我的语言组织的不好,请原谅,这是我几年来第一次写博客.见笑了.

github 代码地址:https://github.com/LuochuanAD/OC-CommonAlertView