iOSiOS新建专题

CATransition—转场动画

2015-11-12  本文已影响4222人  iOS_成才录

一、简介

CATransition头文件

@interface CATransition : CAAnimation

/* The name of the transition. Current legal transition types include
 * `fade', `moveIn', `push' and `reveal'. Defaults to `fade'. */

@property(copy) NSString *type;

/* An optional subtype for the transition. E.g. used to specify the
 * transition direction for motion-based transitions, in which case
 * the legal values are `fromLeft', `fromRight', `fromTop' and
 * `fromBottom'. */

@property(copy) NSString *subtype;

/* The amount of progress through to the transition at which to begin
 * and end execution. Legal values are numbers in the range [0,1].
 * `endProgress' must be greater than or equal to `startProgress'.
 * Default values are 0 and 1 respectively. */

@property float startProgress;
@property float endProgress;

/* An optional filter object implementing the transition. When set the
 * `type' and `subtype' properties are ignored. The filter must
 * implement `inputImage', `inputTargetImage' and `inputTime' input
 * keys, and the `outputImage' output key. Optionally it may support
 * the `inputExtent' key, which will be set to a rectangle describing
 * the region in which the transition should run. Defaults to nil. */

@property(nullable, strong) id filter;

@end

转场动画过渡效果

Snip20151030_10.png

二、view类自带转场动画函数

1、单视图

+(void)transitionWithView:(UIView*)view duration:(NSTimeInterval)duration options:
(UIViewAnimationOptions)options 
animations:(void(^)(void))animations 
completion:(void(^)(BOOLfinished))completion;

2、双视图

+ (void)transitionFromView:(UIView*) fromView 
toView:(UIView*) toViewduration:(NSTimeInterval)durationoptions:(UIViewAnimationOptions) options 
completion:(void(^)(BOOLfinished))completion;

三、应用

注意:

1、图片浏览

转场动画.gif
#import "ViewController.h"

@interface ViewController ()
@property (weak, nonatomic) IBOutlet UIImageView *imageV;

@end

@implementation ViewController

// 注意: 转场动画使用注意点:转场代码必须和转场动画代码写在一起,否则无效
- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
    // 实现:图片浏览
    
    /** 转场代码 */
    static int index = 2;
    NSString *imageName = [NSString stringWithFormat:@"%d",index];
    _imageV.image = [UIImage imageNamed:imageName];
    index++;
    
    if (index == 4) {
        index = 1;
    }
    
    /** 转场动画代码 */
    // 创建转场动画对象
    CATransition *anim = [CATransition animation];
    
    // 设置转场类型
    anim.type = @"pageCurl";
    
    // 设置动画的方向
    anim.subtype = kCATransitionFromLeft;
    
    anim.duration = 3;

    [_imageV.layer addAnimation:anim forKey:nil];
}
@end

2、图标3D翻转:使用UIView自带的单视图的转场动画函数实现

转场动画 图标3D翻转.gif
#import "ViewController.h"

@interface ViewController ()

@property (weak, nonatomic)  UIImageView *iconView;

@end

@implementation ViewController

- (void)viewDidLoad{
    
    [super viewDidLoad];
    
    
    UIImageView *iconView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"1"]];
    [self.view addSubview:iconView];
    iconView.center = self.view.center;
    iconView.backgroundColor = [UIColor greenColor];
    self.iconView = iconView;
    
    // 设置为圆角图片
    self.iconView.layer.cornerRadius = self.iconView.frame.size.width * 0.5;
    self.iconView.clipsToBounds = YES;
}

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
 
    // UIView自带的转场动画
    [UIView transitionWithView:self.iconView duration:1.0 options:UIViewAnimationOptionTransitionFlipFromLeft animations:^{ /**  执行左翻转动画,*/
        // 从左边翻转 , 之前设置显示图片1,翻转后显示图2 -》图片1 左翻转到最后显示图片2

        
        self.iconView.image = [UIImage imageNamed:@"2"];
        
    } completion:^(BOOL finished) {
        
        NSLog(@"completion");
        
        /** 左翻转动画 结束后, 停 1 秒后,再执行 右翻转动画 */
        
        dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(1.0 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{ // 停 1 秒后,再执行 右翻转动画
            
            [UIView transitionWithView:self.iconView duration:1.0 options:UIViewAnimationOptionTransitionFlipFromRight animations:^{ // 然后,从右边翻转,翻转时显示图片1 -》图片2 右翻转最后显示图片1
                
                self.iconView.image = [UIImage imageNamed:@"1"];
                
            } completion:nil];
            
        });
    }];
}
@end

3、视图间转场动画:使用UIView自带双视图间的转场动画函数实现

转场动画 两个视图间 转场动画.gif
#import "ViewController.h"

@interface ViewController ()

@property (weak, nonatomic) IBOutlet UIScrollView *scrollView;

/**< imageView1  */
@property (nonatomic, strong) UIView *view1;

/**< imageView2 */
@property (nonatomic, strong) UIView *view2;

@end

@implementation ViewController

- (void)viewDidLoad{
    
    [super viewDidLoad];
    
    self.view.backgroundColor = [UIColor blackColor];
    
    // 1. scrollView 添加 view2 子控件
    UIView *view2 = [[UIView alloc] init];
    view2.backgroundColor = [UIColor greenColor];
    
    [self.scrollView addSubview:view2];
    self.view2 = view2;
    
    // 2. scrollView 添加 view1 子控件
    UIView *view1 = [[UIView alloc] init];
    view1.backgroundColor = [UIColor redColor];
   
    [self.scrollView addSubview:view1];
    self.view1 = view1;

    // 3. frame
    CGFloat scrollViewW = self.scrollView.frame.size.width;
    CGFloat scrollViewH = self.scrollView.frame.size.height;
    
    view1.frame = CGRectMake(0, 0, scrollViewW, scrollViewH);
    view2.frame = CGRectMake(0, 0, scrollViewW, scrollViewH); // CGRectMake(scrollViewW, 0, scrollViewW, scrollViewH);
    
    // 4. scrollView
    self.scrollView.contentSize = CGSizeMake(scrollViewW, scrollViewH);
    // 添加手势
    UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tapClick:)];
    [self.scrollView addGestureRecognizer:tap];
}

int i = 1;

// 监听到点击scrollView,进行翻转动画
- (void)tapClick:(UITapGestureRecognizer *)tap{
    
    if (i % 2 != 0) {
        
        [UIView transitionFromView:self.view1 toView:self.view2 duration:1.0 options:UIViewAnimationOptionTransitionFlipFromTop completion:nil];
        
    }else{
        [UIView transitionFromView:self.view2 toView:self.view1 duration:1.0 options:UIViewAnimationOptionTransitionFlipFromBottom completion:nil];
    }
    
    i++;
}
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