ios激情详解之动画缩放

来源：互联网发布：苏州人工智能研究院编辑：程序博客网时间：2024/04/30 01:35

#import "RootViewController.h"@interface RootViewController ()@property (nonatomic, retain)UIImageView *imageView;// 保存改变之前的位置,为了变换之后返回去@property (nonatomic ,assign)CGPoint center;// 保存初始化的frame@property(nonatomic, assign)CGRect frame;// 声明形变属性@property (nonatomic, assign)CGAffineTransform transform;@end@implementation RootViewController- (void)viewDidLoad {    [super viewDidLoad];    // Do any additional setup after loading the view.    [self addSubViews];    }

- (void)addSubViews{    self.imageView = [[UIImageView alloc] initWithFrame:(CGRectMake(80, 100, 200, 200))];    self.imageView.backgroundColor = [UIColor redColor];    self.imageView.image = [UIImage imageNamed:@"1.jpg"];        [self.view addSubview:self.imageView];    [self.imageView release];        // 保存中心点 为了    _center = self.imageView.center;    self.imageView.alpha = 1;   // 记录一下形变的属性    _transform = self.imageView.transform;        UIButton *button1 = [UIButton buttonWithType:(UIButtonTypeCustom)];    button1.frame = CGRectMake(200, 400, 40, 50);    button1.backgroundColor = [UIColor blueColor];    [button1 setTitle:@"点" forState:(UIControlStateNormal)];    [button1 addTarget:self action:@selector(actionBlockButton:) forControlEvents:(UIControlEventTouchUpInside)];    [self.view addSubview:button1];}// 点击方法- (void)actionBlockButton:(UIButton *)button{//  缩放    [UIView animateWithDuration:1 animations:^{        // 设置反转        [UIView setAnimationRepeatAutoreverses:YES];                // 缩放        // 参数2,3,缩放比例        self.imageView.transform = CGAffineTransformScale(self.imageView.transform, 2,2);            } completion:^(BOOL finished) {        //        self.imageView.transform = CGAffineTransformScale(self.imageView.transform, 1, 1);                // 复原        self.imageView.transform = _transform;         }];}

#pragma mark-- 自己设置的代理方法- (void)WillStart{    NSLog(@"动画开始");}- (void)DidStop{    NSLog(@"动画结束");    // 复原动画变化之前的位置    self.imageView.center = _center;    self.imageView.alpha = 1;     _frame = self.imageView.frame;}- (void)didReceiveMemoryWarning {    [super didReceiveMemoryWarning];}@end

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