UIButton实现控制动画的开始和停止

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:@"开始" forState:UIControlStateNormal];[self.view addSubview:button];//添加关联事件[button addTarget:self action:@selector(controlAnimation:) forControlEvents:UIControlEventTouchUpInside];

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

//取出button上的titleNSString *title = [sender titleForState:UIControlStateNormal];//判断title是否和@"开始"相同,相同则开始动画,并修改标题为@"停止",如果不相同,则停止动画,并修改标题为@"开始"if ([title isEqualToString:@"开始"]) {    [self aninationWithImageName:@"Zombie"andImageCount:21];    [sender setTitle:@"停止" forState:UIControlStateNormal];} else {    [_imageView stopAnimating];    [sender setTitle:@"开始" 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];

  }
  }