IOS大圖片處理(附源碼)

IOS大圖片處理(附源碼)
大圖片處理

ViewController.m--------------------------------------------------(void)viewDidLoad {    [super viewDidLoad];    // Do any additional setup after loading the view, typically from a nib.    //大圖片滑動    UIScrollView *scrollView = [[UIScrollView alloc] init];    scrollView.frame = CGRectMake(0, 0, self.view.bounds.size.width, self.view.bounds.size.height);//設定UIScrollView的可視範圍    scrollView.backgroundColor = [UIColor grayColor];//設定UIScrollView背景顏色為灰色    [self.view addSubview:scrollView];//載入UIScrollView    UIImageView *imageView = [[UIImageView alloc] init];    imageView.image = [UIImage imageNamed:@"xingkong.jpg"];    CGFloat imgW = imageView.image.size.width;//圖片的寬度    CGFloat imgH = imageView.image.size.height;//圖片的高度    imageView.frame = CGRectMake(0, 0, imgW, imgH);    [scrollView addSubview:imageView];    //設定UIScrollView的滾動範圍（內容大小）    scrollView.contentSize = imageView.image.size;}－

Demo