利用iOS开发实现翻转扑克牌动画的方法

前言

本文主要给大家介绍的关于利用iOS开发实现翻转扑克牌动画的方法，分享出来供大家参考学习，下面话不多说，来一起看看详细的介绍吧。

动画效果

实现原理

实现原理就是创建三个扑克牌pockerView , 先在扑克牌上添加一个imageview，作为牌的背面。然后实现翻转动画，在翻转的时候将imageview移除，添加另一个imageview作为正面。

核心代码：

方法一： 翻转动画，内部实现还是方法二

+ (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);

方法二 ：UIView动画

[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];

完整代码：

ViewController.m文件代码

#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 < 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];
 }
}



// 点击空白处触发
- (void)touchesBegan:(NSSet<UITouch *> *)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 < 3) {
       [self executeAnimation];
      }
 }];
}

// 延时方法
- (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文件代码

//
// 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文件代码

//
// 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

github链接地址：https://github.com/jiangbin1993/pockerRotateAnimation.git

总结

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原文链接：http://www.jianshu.com/p/29f3ed1e3b7d