iOS点击放大图片动画

#import <UIKit/UIKit.h>

@interface ViewController : UIViewController

@property (weak,nonatomic)UITableViewCell * seletedCell;/**< 动画图片的父视图*/
@end

#import "ViewController.h"
#import "RootViewController.h"
#import "MyTranstions.h"
@interface ViewController ()<UITableViewDataSource,UITableViewDelegate>

@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    UITableView *tableView=[UITableView new];
    tableView.delegate=self;
    tableView.dataSource=self;
    tableView.frame = CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height);
    [self.view addSubview:tableView];
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
    return 50;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    UITableViewCell *cell= nil;
    cell = [tableView dequeueReusableCellWithIdentifier:@"tableViewCell"];
    if (cell==nil) {
        cell = [[UITableViewCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:@"tableViewCell"];
    }
    cell .imageView.image = [UIImage imageNamed:@"imageView"];
    cell .textLabel.text=@"嘿嘿饿";
    cell.selectionStyle = UITableViewCellSelectionStyleNone;
    return cell;
}
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
    self.seletedCell = [tableView cellForRowAtIndexPath:indexPath];
    self.seletedCell.selected =false;
    RootViewController *ctr = [RootViewController new];
    ctr.transitioningDelegate = [MyTranstions shareTransitioning];
    [self presentViewController:ctr animated:true completion:nil];

}

#import <UIKit/UIKit.h>

@interface RootViewController : UIViewController

@property (strong,nonatomic)UIImageView *imageView;/**< 动画图片最终显示*/

@end

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view.
    CGFloat width =self.view.bounds.size.width ;
    self.view.backgroundColor = [UIColor whiteColor];
    self.imageView = [UIImageView new];
    self.imageView.frame = CGRectMake((width-136)/2, 60, 136, 171);
    self.imageView.image = [UIImage imageNamed:@"imageView"];
    [self.view addSubview:self.imageView];
}
- (void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event
{
    [super touchesBegan:touches withEvent:event];
    [self dismissViewControllerAnimated:false completion:nil];
}

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

@interface MyTranstions : NSObject <UIViewControllerTransitioningDelegate,UIViewControllerAnimatedTransitioning>{
    
}

+(instancetype)shareTransitioning;


@end

#import "MyTranstions.h"
#import "ViewController.h"
#import "RootViewController.h"
static MyTranstions *_instance;


typedef NS_ENUM(NSUInteger, Status){
    Presented=0,
    Dismissed
};

@interface MyTranstions()

@property (nonatomic,assign)Status currentStatus;

@end

@implementation MyTranstions

+(instancetype)shareTransitioning
{
    if (_instance == nil) {
        static dispatch_once_t onceToken;
        dispatch_once(&onceToken, ^{
            _instance = [MyTranstions new];
        });
    }
    return _instance;
}

-(id<UIViewControllerAnimatedTransitioning>)animationControllerForPresentedController:(UIViewController *)presented presentingController:(UIViewController *)presenting sourceController:(UIViewController *)source
{
    self.currentStatus = Presented;
    return self;
}

-(id<UIViewControllerAnimatedTransitioning>)animationControllerForDismissedController:(UIViewController *)dismissed
{
    self.currentStatus = Dismissed;
    return self;
}

-(NSTimeInterval)transitionDuration:(id<UIViewControllerContextTransitioning>)transitionContext
{
    return 0.6f;
}

-(void)animateTransition:(id<UIViewControllerContextTransitioning>)transitionContext
{
    UIView *containerView = [transitionContext containerView];
    UIViewController *toVC = [transitionContext viewControllerForKey:UITransitionContextToViewControllerKey];
    UIViewController *fromVC = [transitionContext viewControllerForKey:UITransitionContextFromViewControllerKey];
    
    if (self.currentStatus == Presented) {
        ViewController * fromMenuVC = (ViewController *)fromVC;
        RootViewController *toMenuVC= (RootViewController *)toVC;
        
        UIView *snapshotView =[fromMenuVC.seletedCell.imageView snapshotViewAfterScreenUpdates:false];
        snapshotView .frame = [containerView convertRect:fromMenuVC.seletedCell.imageView.frame fromView:fromMenuVC.seletedCell];
        toMenuVC.imageView.hidden =true;
        
        toMenuVC.view.frame = [transitionContext finalFrameForViewController:toMenuVC];
        toMenuVC.view.alpha = 0 ;
        
        [containerView addSubview:toMenuVC.view];
        [containerView addSubview:snapshotView];
        
        [toMenuVC.imageView layoutIfNeeded];
        
        [UIView animateWithDuration:[self transitionDuration:transitionContext] delay:0 options:UIViewAnimationOptionCurveEaseInOut animations:^{
            snapshotView.frame = toMenuVC.imageView.frame;
            toMenuVC.view.alpha = 1;

        } completion:^(BOOL finished) {
            toMenuVC.imageView.hidden  = false ;
            toMenuVC.imageView.image = fromMenuVC.seletedCell.imageView.image;
            [snapshotView removeFromSuperview];
            [transitionContext completeTransition:![transitionContext transitionWasCancelled]];
        }];
        

    }else{

        ViewController * toMenuVC = (ViewController *)toVC;
        RootViewController *fromMenuVC= (RootViewController *)fromVC;
        
        UIView * snapshotView = [fromMenuVC.imageView snapshotViewAfterScreenUpdates:false];
        snapshotView.frame = [containerView  convertRect:fromMenuVC.imageView.frame fromView:fromVC.view];
        fromMenuVC.imageView.hidden = true;
        
        toMenuVC.view.frame = [transitionContext finalFrameForViewController:toMenuVC];
        toMenuVC.seletedCell.imageView.hidden = true ;
        
        [containerView insertSubview:toMenuVC.view belowSubview:fromMenuVC.view];
        [containerView addSubview:snapshotView];
        
        [UIView animateWithDuration:[self transitionDuration:transitionContext] delay:0 options:UIViewAnimationOptionCurveEaseInOut animations:^{
            snapshotView.frame = [containerView convertRect:toMenuVC.seletedCell.imageView.frame fromView:toMenuVC.seletedCell];
            fromMenuVC.view.alpha = 0 ;
            
        } completion:^(BOOL finished) {
            toMenuVC.seletedCell.imageView.hidden = false ;
            [snapshotView removeFromSuperview];
            fromMenuVC.imageView.hidden = false ;
            [transitionContext completeTransition:![transitionContext transitionWasCancelled]];
        }];

    }
}

@end