有一段时间没写博客了, "持之以恒"徽章都暗了, 实在不该。 前一段确实比较忙, ...小小地给自己的懒找个借口吧。 大二即将结束, 学习iOS也有一段时间了。今天抽点时间, 开源一个前几天刚上传的App里面的一个功能, RT, 美女图片采集器。 美女.. 相信没有人不喜欢吧, 基于此, 这个小Demo应运而生。
看到这里, 如果还有兴趣学习的话, 可以先到我的git中下载源码, 然后配合着源码看我下面的解析。相信, 会让你有所收获的。
git下载链接: BeautyPickDemo.git
@property (nonatomic,strong) ASIHTTPRequest *testRequest;
NSString* urlString = [NSString stringWithFormat:@"http://image.baidu.com/channel/listjson?pn=%d&rn=10&tag1=美女&tag2=%@", nowPage, [chooseArr objectAtIndex:nowChoose]]; urlString = [urlString stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]; NSURL *url = [NSURL URLWithString:urlString]; testRequest = [ASIHTTPRequest requestWithURL:url]; [testRequest setDelegate:self]; [testRequest startAsynchronous];
#pragma mark - 加载数据完毕 - (void)requestFinished:(ASIHTTPRequest *)request我们只需要在这里解析数据, 使用数据即可。
//当以二进制读取返回内容时用这个方法
NSData *responseData = [request responseData];
NSString *responseString = [[NSString alloc] initWithData:responseData encoding:NSUTF8StringEncoding];self.testDic = [responseString objectFromJSONString];
NSMutableDictionary *nowDic = [[NSMutableDictionary alloc]init]; [nowDic setObject:[[array objectAtIndex:i]objectForKey:@"image_url"] forKey:@"image_url"]; [nowDic setObject:[[array objectAtIndex:i]objectForKey:@"image_width"] forKey:@"image_width"]; [nowDic setObject:[[array objectAtIndex:i]objectForKey:@"image_height"] forKey:@"image_height"]; [nowDic setObject:[[array objectAtIndex:i]objectForKey:@"desc"] forKey:@"desc"]; [picArray addObject:nowDic];
- (void)setImageWithURL:(NSURL *)url placeholderImage:(UIImage *)placeholder;这是SDWebImage给我们提供的一个函数. 通过调用它, 我们可以实现异步下载和离线缓存。
UIImageView *imageView = [[UIImageView alloc]initWithFrame:CGRectMake(SPACE / 2 , SPACE / 2 , width, height)]; NSURL *url = [NSURL URLWithString:imageInfo.thumbURL]; [imageView setImageWithURL:url placeholderImage:nil]; imageView.backgroundColor = [UIColor palePurpleColor]; [self addSubview:imageView];
//长按 UILongPressGestureRecognizer *longRecognizer; longRecognizer = [[UILongPressGestureRecognizer alloc]initWithTarget:self action:@selector(handleSingleLongFrom:)]; [self addGestureRecognizer:longRecognizer];
//从当前视图中删除
[testArr removeObject:data];
//刷新数据
__weak picVC *blockSelf = self;
[blockSelf.waterView refreshView:testArr];
[blockSelf.waterView.infiniteScrollingView stopAnimating];
//从沙盒中删除
//打开沙盒
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString * namePath = [documentsDirectory stringByAppendingPathComponent:[NSString stringWithFormat:@"savedPicInfo_%d.plist",nowChoose]];
NSMutableArray *picArray = [[NSMutableArray alloc] initWithContentsOfFile:namePath];
for (int i=0; i<[picArray count]; i++)
{
if ([[[picArray objectAtIndex:i]objectForKey:@"image_url"] isEqualToString:data.thumbURL])
{
[picArray removeObjectAtIndex:i];
break;
}
}
[picArray writeToFile:namePath atomically:YES];//单击, 显示大图
-(void)showImage:(ImageInfo*)data
{
NSURL *url = [NSURL URLWithString:data.thumbURL];
[clickImage setImageWithURL:url placeholderImage:nil];
TGRImageViewController *viewController = [[TGRImageViewController alloc] initWithImage:clickImage.image setImageInfo:data];
viewController.transitioningDelegate = self;
[self presentViewController:viewController animated:YES completion:nil];
}
#pragma mark - UIViewControllerTransitioningDelegate methods
- (id<UIViewControllerAnimatedTransitioning>)animationControllerForPresentedController:(UIViewController *)presented presentingController:(UIViewController *)presenting sourceController:(UIViewController *)source
{
if ([presented isKindOfClass:TGRImageViewController.class]) {
return [[TGRImageZoomAnimationController alloc] initWithReferenceImageView:clickImage];
}
return nil;
}
- (id<UIViewControllerAnimatedTransitioning>)animationControllerForDismissedController:(UIViewController *)dismissed {
if ([dismissed isKindOfClass:TGRImageViewController.class]) {
return [[TGRImageZoomAnimationController alloc] initWithReferenceImageView:clickImage];
}
return nil;
}#pragma mark - Private methods
- (void)longPress:(UITapGestureRecognizer *)tapGestureRecognizer
{
if(tapGestureRecognizer.state == UIGestureRecognizerStateBegan)
{
[self popupActionSheet];
}
}
- (IBAction)handleSingleTap:(UITapGestureRecognizer *)tapGestureRecognizer {
[self dismissViewControllerAnimated:YES completion:nil];
}
- (IBAction)handleDoubleTap:(UITapGestureRecognizer *)tapGestureRecognizer {
if (self.scrollView.zoomScale == self.scrollView.minimumZoomScale) {
// Zoom in
CGPoint center = [tapGestureRecognizer locationInView:self.scrollView];
CGSize size = CGSizeMake(self.scrollView.bounds.size.width / self.scrollView.maximumZoomScale,
self.scrollView.bounds.size.height / self.scrollView.maximumZoomScale);
CGRect rect = CGRectMake(center.x - (size.width / 2.0), center.y - (size.height / 2.0), size.width, size.height);
[self.scrollView zoomToRect:rect animated:YES];
}
else {
// Zoom out
[self.scrollView zoomToRect:self.scrollView.bounds animated:YES];
}
} _transitionOptions= @[[NSNumber numberWithInteger:UIViewAnimationOptionTransitionFlipFromLeft],
[NSNumber numberWithInteger:UIViewAnimationOptionTransitionFlipFromRight],
[NSNumber numberWithInteger:UIViewAnimationOptionTransitionCurlUp],
[NSNumber numberWithInteger:UIViewAnimationOptionTransitionCurlDown],
[NSNumber numberWithInteger:UIViewAnimationOptionTransitionCrossDissolve],
[NSNumber numberWithInteger:UIViewAnimationOptionTransitionFlipFromTop],
[NSNumber numberWithInteger:UIViewAnimationCurveEaseIn],
[NSNumber numberWithInteger:UIViewAnimationCurveEaseOut],
[NSNumber numberWithInteger:UIViewAnimationCurveLinear],
[NSNumber numberWithInteger:UIViewAnimationOptionAllowAnimatedContent],
[NSNumber numberWithInteger:UIViewAnimationOptionOverrideInheritedCurve],
[NSNumber numberWithInteger:UIViewAnimationOptionTransitionFlipFromTop],
[NSNumber numberWithInteger:UIViewAnimationOptionTransitionFlipFromBottom]];-(void)reloadData {
if (!self.dataSource) {
//exit if data source has not been set up yet
self.photoViews = nil;
return;
}
NSInteger numberOfPhotos = [self.dataSource numberOfPhotosInPhotoStackView:self];
NSInteger topPhotoIndex = [self indexOfTopPhoto]; // Keeping track of current photo‘s top index so that it remains on top if new photos are added
if(numberOfPhotos > 0) {
NSMutableArray *photoViewsMutable = [[NSMutableArray alloc] initWithCapacity:numberOfPhotos];
UIImage *borderImage = [self.borderImage resizableImageWithCapInsets:UIEdgeInsetsMake(self.borderWidth, self.borderWidth, self.borderWidth, self.borderWidth)];
for (NSUInteger index = 0; index < numberOfPhotos; index++) {
UIImage *image = [self.dataSource photoStackView:self photoForIndex:index];
CGSize imageSize = image.size;
if([self.dataSource respondsToSelector:@selector(photoStackView:photoSizeForIndex:)]){
imageSize = [self.dataSource photoStackView:self photoSizeForIndex:index];
}
UIImageView *photoImageView = [[UIImageView alloc] initWithFrame:(CGRect){CGPointZero, imageSize}];
photoImageView.image = image;
UIView *view = [[UIView alloc] initWithFrame:photoImageView.frame];
view.layer.rasterizationScale = [[UIScreen mainScreen] scale];
view.layer.shouldRasterize = YES; // rasterize the view for faster drawing and smooth edges
if (self.showBorder) {
// Add the background image
if (borderImage) {
// If there is a border image, we need to add a background image view, and add some padding around the photo for the border
CGRect photoFrame = photoImageView.frame;
photoFrame.origin = CGPointMake(self.borderWidth, self.borderWidth);
photoImageView.frame = photoFrame;
view.frame = CGRectMake(0, 0, photoImageView.frame.size.width+(self.borderWidth*2), photoImageView.frame.size.height+(self.borderWidth*2));
UIImageView *backgroundImageView = [[UIImageView alloc] initWithFrame:view.frame];
backgroundImageView.image = borderImage;
[view addSubview:backgroundImageView];
} else {
// if there is no boarder image draw one with the CALayer
view.layer.borderWidth = self.borderWidth;
view.layer.borderColor = [[UIColor whiteColor] CGColor];
view.layer.shadowOffset = CGSizeMake(0, 0);
view.layer.shadowOpacity = 0.5;
}
}
[view addSubview:photoImageView];
view.tag = index;
view.center = CGPointMake(CGRectGetMidX(self.bounds), CGRectGetMidY(self.bounds));
[photoViewsMutable addObject:view];
}
// Photo views are added to subview in the photoView setter
self.photoViews = photoViewsMutable; photoViewsMutable = nil;
[self goToPhotoAtIndex:topPhotoIndex];
}
}
美女图片采集器 (源码+解析),布布扣,bubuko.com
原文地址：http://blog.csdn.net/hitwhylz/article/details/37825177
