这个是调用图像缩放代码片段，通过[self zoomImageButtonPressed : image];调用缩放图片函数就可以了。
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *cellIdentifier = @"imageValueCell";
ImageCell *imageCell = [tableView dequeueReusableCellWithIdentifier:cellIdentifier];
if (!imageCell) {
imageCell = [[ImageCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:cellIdentifier capacity:2 type:ImageCellTypeUneditable];
}
__weak typeof(self)weakSelf = self;
imageCell.addImageAction = ^(ImageControl *control ,NSInteger count) {
weakSelf.selectedControl = control;
weakSelf.imageCount ++;
[weakSelf addImage];
};
imageCell.showImageAction = ^(UIImage *image)
{
[self zoomImageButtonPressed : image];
};
imageCell.deleteImageAction = ^(ImageControl *control ,UIImage *image) {
//do something maybe
self.imageCount --;
NSMutableArray *imageArray = [self.images mutableCopy];
for (UIImage *subImage in imageArray) {
if (subImage == image) {
[self.images removeObject:subImage];
}
}
};
cell = imageCell;
return
具体的缩放图片页面调用逻辑很简单就没有必要再抽象了。
- (void)zoomImageButtonPressed : (UIImage *)image
{
if (!image)
{
return;
}
else
{
NSString *aString = @”CExpandPicViewController”;
CExpandPicViewController *expandPicViewController = [[CExpandPicViewController alloc] initWithNibName:aString bundle:nil];
expandPicViewController.image = image;
[self presentViewController:expandPicViewController animated:NO completion:nil];
}
CExpandPicViewController.h文件的代码：
#import <UIKit/UIKit.h>
@interface CExpandPicViewController : UIViewController<UIScrollViewDelegate>{
}
@property (nonatomic, strong) IBOutlet UIImageView *imageViewBackground;
@property (nonatomic, strong) IBOutlet UIImageView *imageViewExpandPic;
@property (nonatomic, strong) IBOutlet UIImage *image;
@end
CExpandPicViewController.m文件的代码：
#import "CExpandPicViewController.h"
@interface CExpandPicViewController () <UIScrollViewDelegate>
@property (nonatomic, assign) float imageWith;
@property (nonatomic, assign) float imageHeight;
@property(retain,nonatomic)UIScrollView *scrollerView;
@property(retain,nonatomic)UIImageView *imageView;
@property(retain,nonatomic)UIImageView *imageViewBG;
@end
@implementation CExpandPicViewController
- (void)viewDidLoad {
[super viewDidLoad];
[[UIApplication sharedApplication] setStatusBarStyle:UIStatusBarStyleBlackTranslucent animated:NO];
// Do any additional setup after loading the view from its nib.
if(_image == nil)
{
return;
}
float iWidth = _image.size.width;
float iHeight = _image.size.height;
float rate = 2.0;
if((iHeight > WINDOW_HEIGHT) || (iWidth > WINDOW_WIDTH))
{
rate = 2.0;
}
else if(WINDOW_WIDTH*1000/iWidth >= (WINDOW_HEIGHT)*1000/iHeight)
{
rate = WINDOW_HEIGHT/iHeight;
if(rate < 2.0)
{
rate = 2.0;
}
}
else if(WINDOW_WIDTH*1000/iWidth < (WINDOW_HEIGHT)*1000/iHeight)
{
rate = WINDOW_WIDTH/iWidth;
if(rate < 2.0)
{
rate = 2.0;
}
}
_imageViewBackground.backgroundColor = [UIColor colorWithHex:0x000000 alpha:1.0];
_imageViewBG = [[UIImageView alloc]initWithFrame:CGRectMake(0, 0, WINDOW_WIDTH, WINDOW_HEIGHT)];
_imageViewBG.backgroundColor = [UIColor colorWithHex:0x000000 alpha:1.0];
//_imageViewBG.image = _image;
_imageViewBG.userInteractionEnabled = YES;
_imageViewBG.hidden = NO;
_scrollerView=[[UIScrollView alloc]initWithFrame:CGRectMake(0, 0, WINDOW_WIDTH, WINDOW_HEIGHT)];
_scrollerView.delegate=self;
_scrollerView.minimumZoomScale=0.5f;
_scrollerView.maximumZoomScale= rate;
if((iHeight > WINDOW_HEIGHT) || (iWidth > WINDOW_WIDTH))
{
if(iWidth * 1000/WINDOW_WIDTH >= iHeight*1000/(WINDOW_HEIGHT))
{
iHeight = iHeight*WINDOW_WIDTH/iWidth;
iWidth = WINDOW_WIDTH;
}
else
{
iWidth = iWidth * (WINDOW_HEIGHT)/iHeight;
iHeight = WINDOW_HEIGHT;
}
}
_imageView = [[UIImageView alloc]initWithFrame:CGRectMake((WINDOW_WIDTH - iWidth)/2, (WINDOW_HEIGHT - iHeight)/2, iWidth, iHeight)];
_imageView.userInteractionEnabled = YES;
[_imageView setImage:_image];
[_scrollerView addSubview:_imageViewBG];
[_scrollerView addSubview:_imageView];
[self.view addSubview:_scrollerView];
UITapGestureRecognizer *singleTap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(onClickBackGround)];
[_imageViewBG addGestureRecognizer:singleTap];
_imageViewBackground.hidden = NO;
_imageViewBackground.userInteractionEnabled = YES;
UITapGestureRecognizer *bGSingleTap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(onClickBackGround)];
[_imageView addGestureRecognizer:bGSingleTap];
UITapGestureRecognizer *backGroundSingleTap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(onClickBackGround)];
[_imageViewBackground addGestureRecognizer:backGroundSingleTap];
}
- (UIStatusBarStyle)preferredStatusBarStyle
{
return UIStatusBarStyleLightContent;
}
- (BOOL)prefersStatusBarHidden
{
return NO;
}
- (UIView*)viewForZoomingInScrollView:(UIScrollView *)scrollView
{
for (id view in [_scrollerView subviews]) {
if ([view isKindOfClass:[UIImageView class]]) {
{
if(_imageView == ((UIImageView *)view))
{
return view;
}
}
}
}
return nil;
}
- (void)scrollViewDidScroll:(UIScrollView *)scrollView;
{
if((_imageView.frame.size.width <= WINDOW_WIDTH) && (_imageView.frame.size.height <= WINDOW_HEIGHT))
{
CGPoint centerPoint = self.view.center;
_imageView.center = centerPoint;
}
}
- (void)onClickBackGround
{
[self dismissViewControllerAnimated:NO completion:nil];
}
-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
-(void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event
{
}
@end
