import “ViewController.h”

@interface ViewController ()
@property(nonatomic,retain)UIImageView *imageView;
@end

@implementation ViewController
- (void)dealloc
{
self.imageView = nil;
[super dealloc];
}
- (void)viewDidLoad {
[super viewDidLoad];

self.view.backgroundColor = [UIColor grayColor];

UIImage *image = [UIImage imageNamed:@"Zombie0.tiff"];

self.imageView = [[UIImageView alloc]initWithImage:image];

_imageView.frame = CGRectMake(60, 60, 160, 240);

[self.view addSubview:_imageView];

[_imageView release];

UIButton *button = [UIButton buttonWithType:UIButtonTypeSystem];

button.backgroundColor = [UIColor brownColor];

button.frame = CGRectMake(140, 360, 40, 30);

[button setTitle:@"開始" forState:UIControlStateNormal];

[self.view addSubview:button];

//新增關聯事件

[button addTarget:self action:@selector(controlAnimation:) forControlEvents:UIControlEventTouchUpInside];
 

}
- (void)controlAnimation:(UIButton *)sender{

//取出button上的title

NSString *title = [sender titleForState:UIControlStateNormal];

//判斷title是否和@"開始"相同,相同則開始動畫,並修改標題為@"停止",如果不相同,則停止動畫,並修改標題為@"開始"

if ([title isEqualToString:@"開始"]) {

    [self aninationWithImageName:@"Zombie"andImageCount:21];

    [sender setTitle:@"停止" forState:UIControlStateNormal];
} else {
    [_imageView stopAnimating];

    [sender setTitle:@"開始" forState:UIControlStateNormal];
}
 

}

• (void)aninationWithImageName:(NSString *)names andImageCount:(int )count{

  if (_imageView.isAnimating) {
  return;
  }
  NSMutableArray *imageArray = [NSMutableArray array];

  for (int i = 0; i < count; i++) {

  NSString *name = [NSString stringWithFormat:@"%@%d.tiff",names,i];
  
  UIImage *image = [UIImage imageNamed:name];
  
  [imageArray addObject:image];
  
  _imageView.animationImages = imageArray;
  
  _imageView.animationDuration = imageArray.count * 0.03;
  
  _imageView.animationRepeatCount = 0;
  
  [_imageView startAnimating];
   
  

  }
  }