动态获取图片的大小

UIImageView* iamgeView = [[UIImageView alloc]init];

[self.view addSubview:iamgeView];

UIImage* image = [UIImage imageNamed:@"[email protected]"];

iamgeView.image =image;

iamgeView.frame =CGRectMake(100, 100, image.size.width, image.size.height);

NSLog(@"%f--%f",image.size.width,image.size.height);