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