// ----------------------------------------------UIImageView----------------------------------------------
UIImageView *imageView = [[UIImageView alloc] init];
imageView.image = [UIImage imageNamed:@"paper_list_homewok"];
imageView.backgroundColor = [UIColor redColor];
imageView.frame = CGRectMake(100, 100, 300, 300);
// 加载图片方式
//第二种：
NSString *filePath=[[NSBundle mainBundle] pathForResource:@"1" ofType:@"jpeg"];
UIImage *images=[UIImage imageWithContentsOfFile:filePath];
//[imageView setImage:images];
//第三种：
NSData *data=[NSData dataWithContentsOfFile:filePath];
UIImage *image2=[UIImage imageWithData:data];
[imageView setImage:image2];
// 圆角
imageView.layer.masksToBounds = YES;
imageView.layer.cornerRadius = 10.0;
// 边框
imageView.layer.borderColor = [UIColor orangeColor].CGColor;
imageView.layer.borderWidth = 2;
// (4)contentMode属性：当图片小于imageView的大小处理图片显示
imageView.contentMode = UIViewContentModeCenter;
// 播放多个图片
// UIImage *image1 = [UIImage imageNamed:@"paper_list_homewok"];
// UIImage *image2 = [UIImage imageNamed:@"question_check_selected"];
// UIImage *image3 = [UIImage imageNamed:@"paper_list_homewok"];
// UIImage *image4 = [UIImage imageNamed:@"question_check_selected"];
// NSArray *imagesArray = @[image1,image2,image3,image4];
// imageView.animationImages = imagesArray;
// imageView.animationDuration = [imagesArray count];
// [imageView startAnimating];
//为图片添加单击事件：一定要先将userInteractionEnabled置为YES，这样才能响应单击事件
imageView.userInteractionEnabled = YES;
UITapGestureRecognizer *singleTap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tapImageView:)];
[imageView addGestureRecognizer:singleTap];
// 透明度
imageView.alpha = 0.5;
imageView.highlightedImage = [UIImage imageNamed:@"question_check_selected"];
// 设置图片的中心点
imageView.center = CGPointMake(0,0);