demo1 动态显示view或弹框 动态隐藏view或弹框

实现界面如上所示：

有一个弹框，弹框上边有一个关闭按钮，点击按钮，可以关闭弹框。点击弹框的周围区域也可以关闭按钮。 点击上边的隐藏弹框也可以关闭按钮。

在实现功能的基础上，以动画的形式展示跟隐藏。

思路：在之前的开发中，我的思路比较局限。想着用一个view来做中间的那一块，那么问题来了，左上角的关闭按钮，就加在view的左上角。效果猛一看是可以实现，但是这个关闭按钮的点击事件，却不怎么好使，因为按钮有一部分超出了view的界限，于是，点击起来就不太好使。

遇见问题，解决问题。于是我就转换了一种思路。当然这思路还是在别人的指点下完成的。

思路如下：

1.首先确实需要一个弹框的view1 view1的大小是整个界面的大小。设置这个view的背景为半透明，透明度可以是0.5 或者是任意0-1之间的数值，具体看你想要的效果。

2.然后需要一个放内容的view2 这个view2里边包含了 上边的img 还有两行文字，都是放在这个view2里边的。

3.最后将关闭按钮 加在view1的上边。这样就大功告成了。 随便点击关闭按钮，丝毫没有任何印象。

核心代码实现：
acercodeview的代码

//

//  ACErCodeView.m

//  demo1二维码点击动态出现

//

//  Created by Alice_ss on 2018/1/3.

//  Copyright © 2018年 AC. All rights reserved.

//

#import "ACErCodeView.h"

#define SCREENW [UIScreen mainScreen].bounds.size.width

#define SCREENH [UIScreen mainScreen].bounds.size.height

@implementation ACErCodeView{

    UIImageView *codeIMG;

    UILabel *nickNameLabel;

    UILabel *sexLabel;

    UIButton *closeBtn;

}

-(instancetype)initWithFrame:(CGRect)frame{

    if (self = [super initWithFrame:frame]) {

        [self createUI];

    }

    return  self;

}

- (void)createUI{

    //1.创建一个view背景设置呈透明的因为这样的话才能将关闭按钮悬浮在上边。

    UIImageView *bgView = [[UIImageView alloc]initWithFrame:CGRectMake(0, 64, SCREENW,SCREENH)];

    UITapGestureRecognizer *tap  = [[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(tapClose)];

    bgView.userInteractionEnabled = YES;

    [bgView addGestureRecognizer:tap];

    [self addSubview:bgView];

    //2.放内容的大view

    UIView *contentView = [[UIView alloc]initWithFrame:CGRectMake(0, 0, SCREENW-120,SCREENH-200)];

    contentView.backgroundColor = [UIColor whiteColor];

    [self addSubview:contentView];

    //3.二维码图片

    codeIMG = [[UIImageView alloc]initWithFrame:CGRectMake((CGRectGetWidth(contentView.frame)-100)/2, CGRectGetMinY(contentView.frame), 100, 100)];

    codeIMG.backgroundColor = [UIColor redColor];

    [contentView addSubview:codeIMG];

    //4.昵称

    nickNameLabel = [[UILabel alloc]initWithFrame:CGRectMake(0, CGRectGetMaxY(codeIMG.frame)+10, CGRectGetWidth(contentView.frame), 44)];

//    nickNameLabel.backgroundColor = [UIColor blueColor];

    nickNameLabel.text = @"我是你们喜欢的Alice";

    nickNameLabel.textAlignment = NSTextAlignmentCenter;

    [contentView addSubview:nickNameLabel];

    //5.sex

    sexLabel = [[UILabel alloc]initWithFrame:CGRectMake(0, CGRectGetMaxY(nickNameLabel.frame)+10, CGRectGetWidth(contentView.frame), 44)];

//    sexLabel.backgroundColor = [UIColor redColor];

    sexLabel.text= @"我的性别是一个漂亮的小美女哦";

    sexLabel.textAlignment  = NSTextAlignmentCenter;

    [contentView addSubview:sexLabel];

    //给contentview设置高度

    contentView.frame = CGRectMake(SCREENW/2-(SCREENW-120)/2, (SCREENH-(CGRectGetMaxY(sexLabel.frame)+10))/2, SCREENW-120, CGRectGetMaxY(sexLabel.frame)+10);

    //6.关闭按钮

    closeBtn = [[UIButton alloc]initWithFrame:CGRectMake(CGRectGetMinX(contentView.frame)-10, CGRectGetMinY(contentView.frame)-10, 30, 30)

                ];

    [closeBtn setBackgroundImage:[UIImage imageNamed:@"icon_shouye_GuanBi.png"] forState:0];

    [closeBtn addTarget:self action:@selector(closeBtnClicked:) forControlEvents:UIControlEventTouchUpInside];

    [self addSubview:closeBtn];

}

//关闭页面

- (void)closeBtnClicked:(UIButton*)sender{

    [UIView animateWithDuration:0.3 animations:^{

        self.transform = CGAffineTransformScale(CGAffineTransformIdentity, 0.3, 0.3);

    } completion:^(BOOL finished) {

        [UIView animateWithDuration:0.2 animations:^{

            self.transform = CGAffineTransformScale(CGAffineTransformIdentity, 0, 0);

        }];

        self.hidden = YES;

        self.blockCloseClicked(self.hidden);

    }];

}

//点击背景隐藏界面

- (void)tapClose{

    [UIView animateWithDuration:0.3 animations:^{

        self.transform = CGAffineTransformScale(CGAffineTransformIdentity, 0.3, 0.3);

    } completion:^(BOOL finished) {

        [UIView animateWithDuration:0.2 animations:^{

            self.transform = CGAffineTransformScale(CGAffineTransformIdentity, 0, 0);

        }];

        self.hidden = YES;

        self.blockCloseClicked(self.hidden);

    }];

}

@end

//viewcontroller的书写

//

//  Created by Alice_ss on 2018/1/3.

//  Copyright © 2018年 AC. All rights reserved.

//

#import "ViewController.h"

#import "ACErCodeView.h"

#define SCREENW [UIScreen mainScreen].bounds.size.width

#define SCREENH [UIScreen mainScreen].bounds.size.height

@interface ViewController ()

@property (weak, nonatomic) IBOutlet UIBarButtonItem *navRBarItem;

@property(nonatomic,strong)ACErCodeView *erCodeIMG;

@end

@implementation ViewController

- (IBAction)naviRBarClicked:(UIBarButtonItem *)sender {

    NSLog(@"RIGHT BAR ITEM CLICKED");

    if(_erCodeIMG.hidden){

        _erCodeIMG.hidden = NO;

        sender.title = @"点击隐藏";

        _erCodeIMG.transform = CGAffineTransformScale(CGAffineTransformIdentity, CGFLOAT_MIN, CGFLOAT_MIN);

        [UIView animateWithDuration:0.3 animations:^{

            self.erCodeIMG.transform = CGAffineTransformScale(CGAffineTransformIdentity, 1.0, 1.0);

        } completion:^(BOOL finished) {

            [UIView animateWithDuration:0.2 animations:^{

                _erCodeIMG.transform = CGAffineTransformIdentity;

            }];

        }];

    }else{

        sender.title = @"点击显示";

        [UIView animateWithDuration:0.3 animations:^{

            self.erCodeIMG.transform = CGAffineTransformScale(CGAffineTransformIdentity, 0.3, 0.3);

        } completion:^(BOOL finished) {

            [UIView animateWithDuration:0.2 animations:^{

                _erCodeIMG.transform = CGAffineTransformScale(CGAffineTransformIdentity, 0, 0);

            }];

            _erCodeIMG.hidden = YES;

        }];

    }

}

- (void)viewDidLoad {

    [super viewDidLoad];

    self.view.backgroundColor = [UIColor yellowColor];

    // Do any additional setup after loading the view, typically from a nib.

    _erCodeIMG = [[ACErCodeView alloc]initWithFrame:CGRectMake(0, 0,SCREENW , SCREENH)];

    _erCodeIMG.backgroundColor = [UIColor colorWithRed:0 green:0 blue:0 alpha:0.5];

    _erCodeIMG.hidden = YES;

    __weak typeof(self) weakSelf = self;

    _erCodeIMG.blockCloseClicked = ^(BOOL ishidden) {

        if (ishidden) {

            self.navRBarItem.title = @"点击显示";

        }else{

            self.navRBarItem.title = @"点击隐藏";

        }

    };

    [self.view addSubview:_erCodeIMG];

}

- (void)didReceiveMemoryWarning {

    [super didReceiveMemoryWarning];

    // Dispose of any resources that can be recreated.

}

@end

以上就是全部代码。

希望新的一年，自己工作越来越踏实。同时也要学会拒绝，学会给与。

如有任何问题。请联系我的邮箱 673658917@qq.com .