+ (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 ()// 記錄翻第幾張牌@property(nonatomic,assign)NSInteger index;// 動畫時間@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"]; // 循環創建3張撲克牌 for (int i = 0; i < 3; i++) {  PockerView *pocker = [[PockerView alloc]initWithFrame:CGRectMake(100 + 80 * i, 100, 100, 150) imageName:arr[i]];  pocker.tag = 1000 + i;  [self.view addSubview:pocker]; }} // 點擊空白處觸發- (void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event{ // 執行動畫 [self executeAnimation];}// 執行動畫- (void)executeAnimation{ // 根據tag值取到撲克牌 PockerView *pocker = [self.view viewWithTag:1000+ _index]; // 方法一 [self animationWithView:pocker]; // 方法二// [self rotateWithView:pocker];}// 翻牌動畫方法一（內部實現還是方法二）- (void)animationWithView:(PockerView *)view{ // 延時方法 正在翻轉的牌翻轉一半的時候把它移到視圖最上面來 [self performSelector:@selector(delayAction:) withObject:view afterDelay:_duration / 2]; // 翻轉動畫 UIViewAnimationOptions option = UIViewAnimationOptionTransitionFlipFromLeft; [UIView transitionWithView:view      duration:_duration      options:option     animations:^ {      [view.imgview1 removeFromSuperview];      [view addSubview:view.imgview2];     }     completion:^(BOOL finished){      _index++;      if (_index < 3) {       [self executeAnimation];      } }];}// 延時方法- (void)delayAction:(UIView *)view{ [self.view bringSubviewToFront:view];}- (void)delayAction2{ _index++; if (_index < 3) {  [self executeAnimation]; }}// 方法二- (void)rotateWithView:(PockerView *)view{ [self performSelector:@selector(delayAction:) withObject:view afterDelay:_duration / 2]; [self performSelector:@selector(delayAction2) withObject:nil afterDelay:_duration]; [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];}@end

//// PockerView.h// 翻牌//// Created by 斌 on 2017/4/20.// Copyright © 2017年 斌. All rights reserved.//#import <UIKit/UIKit.h>@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) {  // 設置陰影  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