实现效果如图

WX20170725-161326@2x.png

封装工具MyPopTool.h

#import <Foundation/Foundation.h>
#import <UIKit/UIKit.h>

@interface MyPopTool : NSObject
+ (instancetype)sharedInstance;

- (void)popView:(UIView *)view animated:(BOOL)animated;

- (void)closeAnimated:(BOOL)animated;
@end

MyPopTool.m

#import "MyPopTool.h"

@interface MyPopTool ()
@property (nonatomic, strong) UIView *currentView;
@end

@implementation MyPopTool
+ (instancetype)sharedInstance {
    static MyPopTool *_popTool = nil;
    static dispatch_once_t onceToken;
    dispatch_once(&onceToken, ^{
        _popTool = [[MyPopTool alloc] init];
    });
    return _popTool;
}

- (void)popView:(UIView *)view animated:(BOOL)animated {
    _currentView = view;
    CGFloat halfScreenWidth = [[UIScreen mainScreen] bounds].size.width * 0.5;
    CGFloat halfScreenHeight = [[UIScreen mainScreen] bounds].size.height * 0.5;
    // 屏幕中心
    CGPoint screenCenter = CGPointMake(halfScreenWidth, halfScreenHeight);
    view.center = screenCenter;
    UIWindow *keyWindow = [UIApplication sharedApplication].keyWindow;
    [keyWindow addSubview:view];
    
    if (animated) {
        // 将view宽高缩至无限小（点）
        view.transform = CGAffineTransformScale(CGAffineTransformIdentity, CGFLOAT_MIN, CGFLOAT_MIN);
        [UIView animateWithDuration:0.3 animations:^{
            // 以动画的形式将view慢慢放大至原始大小的1.2倍
            view.transform = CGAffineTransformScale(CGAffineTransformIdentity, 1.2, 1.2);
        } completion:^(BOOL finished) {
            [UIView animateWithDuration:0.2 animations:^{
                // 以动画的形式将view恢复至原始大小
                view.transform = CGAffineTransformIdentity;
            }];
        }];
    }
}

- (void)closeAnimated:(BOOL)animated {
    if (animated) {
        [UIView animateWithDuration:0.2 animations:^{
            _currentView.transform = CGAffineTransformScale(CGAffineTransformIdentity, 1.2, 1.2);
        } completion:^(BOOL finished) {
            [UIView animateWithDuration:0.3 animations:^{
                _currentView.transform = CGAffineTransformScale(CGAffineTransformIdentity, 0.001, 0.001);
            } completion:^(BOOL finished) {
                [_currentView removeFromSuperview];
            }];
        }];
    } else {
        [_currentView removeFromSuperview];
    }
}

具体用法如下:

• 懒加载,要弹出视图的样式

- (UIView *)popOutView{
    if (!_popOutView) {
        _popOutView = [[UIView alloc] initWithFrame:self.view.bounds];
        _popOutView.backgroundColor = [UIColor colorWithWhite:0.000 alpha:0.400];
        _popOutView.alpha = 0.9f;
        
        UIView *bgView = [[UIView alloc] initWithFrame:CGRectMake(SCREEN_WIDTH_NO_STATUS * 0.5 - 75, SCREEN_HEIGHT_NO_STATUS * 0.5 - 100, 150, 200)];
        bgView.layer.masksToBounds = YES;
        bgView.layer.cornerRadius = 5.0 ;
        bgView.backgroundColor = [UIColor whiteColor];
        [_popOutView addSubview:bgView];
        
        UIImageView *img = [[UIImageView alloc] initWithFrame:CGRectMake(0 , 0, 150, 150)];
        img.image = [UIImage imageNamed:@"ubit_sucess"];
        [bgView addSubview:img];
        
        UILabel *prompt = [[UILabel alloc] initWithFrame:CGRectMake(0, 150, 150, 50)];
        prompt.numberOfLines = 0;
        prompt.textColor = [UIColor orangeColor];
        prompt.textAlignment = NSTextAlignmentCenter;
        self.promptLabel = prompt;
        [bgView addSubview:prompt];
    }
    return _popOutView;
}

• 打开视图

[[MyPopTool sharedInstance] popView:self.popOutView animated:YES];

• 关闭视图

[[MyPopTool sharedInstance] closeAnimated:NO];