UIImageView的简单使用

 1 - (void)viewDidLoad {
 2     [super viewDidLoad];
 3     //将图片转化为UIImage对象
 4     //png格式不需要加扩展名，其它格式图片需要
 5     UIImage* image1 = [UIImage imageNamed:@"a"];
 6     UIImage* image2 = [UIImage imageNamed:@"b"];
 7
 8     UIImageView* imageV = [[UIImageView alloc] initWithFrame:CGRectMake(100, 100, 100, 70)];
 9     [self.view addSubview:imageV];
10     //设置背景颜色
11     imageV.backgroundColor = [UIColor orangeColor];
12     //设置显示的图片
13     imageV.image = image1;
14     //改变图片填充方式
15     //UIViewContentModeScaleAspectFit，等比例缩放，图片不变形
16     //UIViewContentModeScaleAspectFill,等比例填充，填满
17     imageV.contentMode = UIViewContentModeScaleAspectFit;
18     //切除超出部分
19 //    imageV.clipsToBounds = YES;
20
21     //设置高亮图片
22     imageV.highlightedImage = image2;
23     imageV.highlighted = YES;
24
25
26     //动画数组
27     UIImageView* animateImageView = [[UIImageView alloc] initWithFrame:CGRectMake(0, 0, 320, 190)];
28     [self.view addSubview:animateImageView];
29     //创建动画数组
30     NSMutableArray* animateImages = [[NSMutableArray alloc] init];
31
32     for (int i = 1; i < 22; i++) {
33         //记得加扩展名（.jpg）
34         NSString* imageName = [NSString stringWithFormat:@"%d.jpg",i];
35         UIImage* image = [UIImage imageNamed:imageName];
36         [animateImages addObject:image];
37     }
38     //设置需要播放的动画（图片数组）
39     animateImageView.animationImages = animateImages;
40     //设置动画时间
41     animateImageView.animationDuration = 2;
42     //设置重复次数(0是一直重复)
43     animateImageView.animationRepeatCount = 0;
44
45     //开始动画
46     [animateImageView startAnimating];
47
48
49 }