UIImageView有关的帧动画

纯代码：设置imageView帧动画

@interface ViewController ()

{

    UIImageView *_imgView;

    NSMutableArray<UIImage *> *_imageArr;

}

@end

@implementation ViewController

- (void)viewDidLoad {

    [super viewDidLoad];

    

    _imgView = [[UIImageView alloc] initWithFrame:CGRectMake(50, 300, 300, 200)];

    _imgView.image = [UIImage imageNamed:@"1.jpg"];

    [self.view addSubview:_imgView];

    

    // 1.1 实例化可变数组用来 加载所有的图片

    _imageArr = [NSMutableArray array];

    for (int i = 0; i<20; i++) {

        // 获取图片的名称

        NSString *imageName = [NSString stringWithFormat:@"%d", i+1];

        // 创建UIImage对象

        UIImage *image = [UIImage imageNamed:imageName];

        // 加入数组

        [_imageArr addObject:image];

    }

    

    // 开始按钮

    UIButton *imgViewButtonStart = [UIButton buttonWithType:UIButtonTypeRoundedRect];

    [imgViewButtonStart setFrame:CGRectMake(20, 200, 200, 50)];

    [imgViewButtonStart setTitle:@"开始动画" forState:UIControlStateNormal];

    [imgViewButtonStart setTitleColor:[UIColor blueColor] forState:UIControlStateNormal];

    [imgViewButtonStart addTarget:self action:@selector(stratAction) forControlEvents:UIControlEventTouchUpInside];

    [self.view addSubview:imgViewButtonStart];

    // 暂停按钮

    UIButton *imgViewButtonStop = [UIButton buttonWithType:UIButtonTypeRoundedRect];

    [imgViewButtonStop setFrame:CGRectMake(200, 200, 200, 50)];

    [imgViewButtonStop setTitle:@"停止动画" forState:UIControlStateNormal];

    [imgViewButtonStop setTitleColor:[UIColor blueColor] forState:UIControlStateNormal];

    [imgViewButtonStop addTarget:self action:@selector(stopAction) forControlEvents:UIControlEventTouchUpInside];

    [self.view addSubview:imgViewButtonStop];

    

    

}

#pragma mark - 开始动画

- (void)stratAction {

    // 设置动画图片

    _imgView.animationImages = _imageArr;

    // 设置动画的播放次数

    _imgView.animationRepeatCount = 0;

    // 设置播放时长

    // 1秒30帧, 一张图片的时间 = 1/30 = 0.03333 20 * 0.0333

    _imgView.animationDuration = 1.0;

    // 开始动画

    [_imgView startAnimating];

    

}

#pragma mark - 结束动画

- (void)stopAction {

    [_imgView stopAnimating];

}

@end