UIScrollView的一些简单常用的方法。
#import "ViewController.h"
@interface ViewController ()<UIScrollViewDelegate> {
UIScrollView *_scrollView;
UIImageView *_imageView;
}
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
_scrollView = [[UIScrollView alloc] initWithFrame:self.view.bounds];
[self.view addSubview:_scrollView];
//设置图片
UIImage *image = [UIImage imageNamed:@"img2"];
_imageView = [[UIImageView alloc] initWithImage:image];
[_scrollView addSubview:_imageView];
//设置照片的大小
_scrollView.contentSize = image.size;
//缩放范围 2倍~0.5倍
_scrollView.maximumZoomScale = 2.0;
_scrollView.minimumZoomScale = 0.5;
}
- (UIView *)viewForZoomingInScrollView:(UIScrollView *)scrollView {
//你要缩放的范围
return _imageView;
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
@end
