ui基础--放大缩小动画

首先我们用pod安装2个三方库:

use_frameworks!

target ‘Love--动画‘ do
pod ‘pop‘, ‘~> 1.0.9‘
pod ‘POP+MCAnimate‘, ‘~> 2.0‘

end

实现代码:

#import "RootViewController.h"

@interface RootViewController ()
@property (nonatomic, strong) UIImageView *myImageView;
@property (nonatomic, strong) dispatch_source_t timer;

@end

@implementation RootViewController

- (void)viewWillAppear:(BOOL)animated
{

    [self setupScoreAnimation];
}

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view.
    self.view.backgroundColor = [UIColor whiteColor];
    self.title = @"臭美";

    self.myImageView = [[UIImageView alloc]initWithFrame:CGRectMake(100, 300, 100, 100)];

    UIImage *image = [UIImage imageNamed:@"10"];

    self.myImageView.layer.cornerRadius = 50;
    self.myImageView.layer.masksToBounds = YES;

    self.myImageView.image = image;

    [self.view addSubview:_myImageView];

}

- (void)setupScoreAnimation
{
    dispatch_queue_t queue = dispatch_get_main_queue();

    self.timer = dispatch_source_create(DISPATCH_SOURCE_TYPE_TIMER, 0, 0, queue);
    dispatch_time_t start = dispatch_time(DISPATCH_TIME_NOW, (int64_t)(1.0 * NSEC_PER_SEC));
    uint64_t interval = (uint64_t)(1.0 * NSEC_PER_SEC);
    dispatch_source_set_timer(self.timer, start, interval, 0);
    dispatch_source_set_event_handler(self.timer, ^{

        [self animationStar];
    });

    dispatch_resume(self.timer);
}

- (void)animationStar
{
    [NSObject pop_animate:^{

        self.myImageView.pop_spring.pop_scaleXY = CGPointMake(1.5, 1.5);
        self.myImageView.pop_springBounciness = 20;
        self.myImageView.pop_springSpeed = 20;
    } completion:^(BOOL finished) {

        self.myImageView.pop_spring.pop_scaleXY = CGPointMake(1, 1);
        self.myImageView.pop_springBounciness = 20;
        self.myImageView.pop_springSpeed = 20;
    }];
}

@end

自己可以试试哈...

记得要将timer至nil啊.

- (void)viewDidDisappear:(BOOL)animated
{
    dispatch_cancel(self.timer);
    self.timer = nil;
}

完成...