IOS开发之翻转扑克牌动画如何实现

+ (void)transitionWithView:(UIView *)view duration:(NSTimeInterval)duration options:(UIViewAnimationOptions)options animations:(void (^ __nullable)(void))animations completion:(void (^ __nullable)(BOOL finished))completion NS_AVAILABLE_IOS(4_0);

[UIView beginAnimations:@"aa" context:nil];
 [UIView setAnimationDuration:_duration];
 [UIView setAnimationCurve:UIViewAnimationCurveLinear];
 [view.imgview1 removeFromSuperview];
 [view addSubview:view.imgview2];
 [UIView setAnimationTransition:UIViewAnimationTransitionFlipFromLeft forView:view cache:NO];
 [UIView commitAnimations];

#import "ViewController.h"
#import "PockerView.h"
@interface ViewController ()
// 记录翻第几张牌
@property(nonatomic,assign)NSInteger index;
// 动画时间
@property(nonatomic,assign)CGFloat duration;
@end

@implementation ViewController

 

- (void)viewDidLoad {
 [super viewDidLoad];

 self.view.backgroundColor = [UIColor blackColor];
 _duration = 0.5;
 _index = 0;
 NSArray *arr = @[@"2.jpg",@"3.jpg",@"4.jpg"];
 // 循环创建3张扑克牌
 for (int i = 0; i  *)touches withEvent:(UIEvent *)event{
 // 执行动画
 [self executeAnimation];
}


// 执行动画
- (void)executeAnimation{
 // 根据tag值取到扑克牌
 PockerView *pocker = [self.view viewWithTag:1000+ _index];
 // 方法一
 [self animationWithView:pocker];
 // 方法二
// [self rotateWithView:pocker];
}

// 翻牌动画方法一（内部实现还是方法二）
- (void)animationWithView:(PockerView *)view{
 // 延时方法 正在翻转的牌翻转一半的时候把它移到视图最上面来
 [self performSelector:@selector(delayAction:) withObject:view afterDelay:_duration / 2];

 // 翻转动画
 UIViewAnimationOptions option = UIViewAnimationOptionTransitionFlipFromLeft;
 [UIView transitionWithView:view      duration:_duration
      options:option
     animations:^ {
      [view.imgview1 removeFromSuperview];
      [view addSubview:view.imgview2];
     }
     completion:^(BOOL finished){
      _index++;
      if (_index 

//
// PockerView.h
// 翻牌
//
// Created by 斌 on 2017/4/20.
// Copyright © 2017年 斌. All rights reserved.
//

#import 

@interface PockerView : UIView

@property(nonatomic,strong)UIImageView *imgview1;
@property(nonatomic,strong)UIImageView *imgview2;

- (instancetype)initWithFrame:(CGRect)frame imageName:(NSString *)imageName;

@end

//
// PockerView.m
// 翻牌
//
// Created by 斌 on 2017/4/20.
// Copyright © 2017年 斌. All rights reserved.
//

#import "PockerView.h"

@implementation PockerView

- (instancetype)initWithFrame:(CGRect)frame imageName:(NSString *)imageName{
 self = [super initWithFrame:frame];
 if (self) {

  // 设置阴影
  self.layer.shadowColor = [UIColor blackColor].CGColor;
  self.layer.shadowOffset = CGSizeMake(-10, 0);
  self.layer.shadowOpacity = 0.3;

  // 牌的背面
  self.imgview1 = [[UIImageView alloc] initWithFrame:CGRectMake(0, 0, frame.size.width, frame.size.height)];
  _imgview1.backgroundColor = [UIColor redColor];
  _imgview1.image = [UIImage imageNamed:@"1.jpeg"];
  [self addSubview:_imgview1];
  self.imgview1.layer.cornerRadius = 10;
  self.imgview1.clipsToBounds = YES;
  self.imgview1.layer.borderWidth = 5;
  self.imgview1.layer.borderColor = [[UIColor whiteColor] CGColor];

  // 牌的正面
  self.imgview2 = [[UIImageView alloc] initWithFrame:CGRectMake(0, 0, frame.size.width, frame.size.height)];
  _imgview2.backgroundColor = [UIColor redColor];
  _imgview2.image = [UIImage imageNamed:imageName];
  self.imgview2.layer.cornerRadius = 10;
  self.imgview2.clipsToBounds = YES;
  self.imgview2.layer.borderWidth = 5;
  self.imgview2.layer.borderColor = [[UIColor whiteColor] CGColor];
 }
 return self;
}
@end