首先写一个类 写放大缩小的方法
//// BigImage.h// TapImageBigAndSmall//// Created by lxy on 15-4-7.// Copyright (c) Shenzhen MSD Technology Co.,LTD. All rights reserved.//#import <Foundation/Foundation.h>#import <UIKit/UIKit.h>@interface BigImage : NSObject+(void)showImage:(UIImageView *)avatarImageView;+(void)hideImage:(UITapGestureRecognizer*)tap;@end
实现方法
//// BigImage.m// TapImageBigAndSmall//// Created by lxy on 15-4-7.// Copyright (c) Shenzhen MSD Technology Co.,LTD. All rights reserved.//#import "BigImage.h"@implementation BigImagestatic CGRect oldframe;+(void)showImage:(UIImageView *)avatarImageView{UIImage *image = avatarImageView.image;UIWindow *window = [UIApplication sharedApplication].keyWindow;UIView *backgroundView = [[UIView alloc]initWithFrame:CGRectMake( 0, 0, [UIScreen mainScreen].bounds.size.width, [UIScreen mainScreen].bounds.size.height)];oldframe = [avatarImageView convertRect:avatarImageView.bounds toView:window];backgroundView.backgroundColor = [UIColor blackColor];backgroundView.alpha = 0;UIImageView *imageView = [[UIImageView alloc]initWithFrame:oldframe];imageView.image = image;imageView.tag = 1;[backgroundView addSubview:imageView];[window addSubview:backgroundView];UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(hideImage:)];[backgroundView addGestureRecognizer: tap];[UIView animateWithDuration:0.3 animations:^{imageView.frame=CGRectMake(0,([UIScreen mainScreen].bounds.size.height-image.size.height*[UIScreen mainScreen].bounds.size.width/image.size.width)/2, [UIScreen mainScreen].bounds.size.width, image.size.height*[UIScreen mainScreen].bounds.size.width/image.size.width);backgroundView.alpha = 1;} completion:^(BOOL finished) {}];}+(void)hideImage:(UITapGestureRecognizer*)tap{UIView *backgroundView = tap.view;UIImageView *imageView = (UIImageView*)[tap.view viewWithTag:1];[UIView animateWithDuration:0.3 animations:^{imageView.frame = oldframe;backgroundView.alpha = 0;} completion:^(BOOL finished) {[backgroundView removeFromSuperview];}];}@end
在视图控制器中
//// ViewController.m// TapImageBigAndSmall//// Created by lxy on 15-4-7.// Copyright (c) Shenzhen MSD Technology Co.,LTD. All rights reserved.//#import "ViewController.h"#import "BigImage.h"@interface ViewController ()@property (nonatomic,strong)UIImageView *image;@end@implementation ViewController- (void)viewDidLoad {[super viewDidLoad];self.view.backgroundColor = [UIColor magentaColor];self.image = [[UIImageView alloc]initWithFrame:CGRectMake(100, 100, 100, 100)];_image.image = [UIImage imageNamed:@"me"];_image.userInteractionEnabled = YES;[self.view addSubview:_image];/*** 给图片添加手势 点击可放大图片 */UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(tapClick)];[self.image addGestureRecognizer:tap];/*** 一张图片围绕着一个圆转圈*///[self AnimationStart];}- (void)tapClick{[BigImage showImage:_image];}- (void)AnimationStart{UIImage *image=[UIImage imageNamed:@"me"];CALayer *flyStarLayer=[CALayer layer];flyStarLayer.bounds=CGRectMake(0, 0, 20, 20);flyStarLayer.contents=(id)image.CGImage;[self.view.layer addSublayer:flyStarLayer];CAKeyframeAnimation *keyAnimation=[CAKeyframeAnimation animationWithKeyPath:@"position"];keyAnimation.duration=5.0;keyAnimation.removedOnCompletion=NO;// NSNumber *number1=[NSNumber numberWithFloat:0.0];// NSNumber *number2=[NSNumber numberWithFloat:0.2];// NSNumber *number3=[NSNumber numberWithFloat:0.8];// keyAnimation.keyTimes=[NSArray arrayWithObjects:number1,number2,number3, nil];keyAnimation.fillMode=kCAFillModeForwards;keyAnimation.repeatCount=1;CGMutablePathRef circlePath=CGPathCreateMutable();CGPathAddArc(circlePath, nil, 100, 150, 50, 0, 4*M_PI, 0);keyAnimation.path=circlePath;CGPathRelease(circlePath);[flyStarLayer addAnimation:keyAnimation forKey:nil];}
如果觉得《点击图片进行放大 再次点击就缩小到原来的地方》对你有帮助，请点赞、收藏，并留下你的观点哦！
