介绍：MJPhotoBrowser这个第三方库是MJ老师封装的一套用来浏览图片的浏览器，可是是本地图片、网络图片、gif图片等，其也依赖了SDWebImage、SVProgressHUD、YLGIFImage这些三方库，因为高度封装，所以集成起来比较简单，貌似已经停止更新并卸下了。下面看一些几个重要的类：
MJPhotoBrowser框架：http://files.cnblogs.com/files/XYQ-208910/MJPhotoBrowser.zip
图片模型类MJPhoto
MJPhoto.h
#import <UIKit/UIKit.h> #import <Foundation/Foundation.h> #import <QuartzCore/QuartzCore.h> #import <YLGIFImage/YLImageView.h> #import <YLGIFImage/YLGIFImage.h> #import <SDWebImage/UIImageView+WebCache.h> #import <SVProgressHUD/SVProgressHUD.h>@interface MJPhoto : NSObject@property (nonatomic, strong) NSURL *url; //图片链接 @property (nonatomic, strong) UIImage *image; // 完整的图片 @property (nonatomic, strong) UIImageView *srcImageView; // 来源view @property (nonatomic, strong, readonly) UIImage *placeholder; //占位图片 @property (nonatomic, strong, readonly) UIImage *capture; //截图// 是否已经保存到相册 @property (nonatomic, assign) BOOL save; @property (nonatomic, assign) int index; // 索引@end
MJPhoto.m
#import "MJPhoto.h"@implementation MJPhoto#pragma mark - 截图 - (UIImage *)capture:(UIView *)view {UIGraphicsBeginImageContextWithOptions(view.bounds.size, YES, 0.0);[view.layer renderInContext:UIGraphicsGetCurrentContext()];UIImage *img = UIGraphicsGetImageFromCurrentImageContext();UIGraphicsEndImageContext();return img; }- (void)setSrcImageView:(UIImageView *)srcImageView {_srcImageView = srcImageView;_placeholder = srcImageView.image;if (srcImageView.clipsToBounds) {_capture = [self capture:srcImageView];} }@end
预览器类MJPhotoBrowser
MJPhotoBrowser.h
#import "MJPhoto.h"@protocol MJPhotoBrowserDelegate;@interface MJPhotoBrowser : NSObject <UIScrollViewDelegate> // 所有的图片对象 @property (nonatomic, strong) NSArray *photos; // 当前展示的图片索引 @property (nonatomic, assign) NSUInteger currentPhotoIndex; // 保存按钮 @property (nonatomic, assign) NSUInteger showSaveBtn;// 显示图片 - (void)show;@end
集成过来使用的方法：
1.本地图片
-(void)addImage:(UIImage *)image {[self.photos addObject:image];UIImageView *imageView = [[UIImageView alloc]initWithImage:image];imageView.contentMode = UIViewContentModeScaleToFill;imageView.userInteractionEnabled = YES;[imageView addGestureRecognizer:[[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(photoTap:)]];[self addSubview:imageView]; }//点击预览图片 - (void)photoTap:(UITapGestureRecognizer *)recognizer {//1.创建图片浏览器NSMutableArray *kjphotos = [NSMutableArray array];MJPhotoBrowser *brower = [[MJPhotoBrowser alloc] init];//2.告诉图片浏览器显示所有的图片for (int i = 0 ; i < self.photos.count; i++) {//传递数据给浏览器MJPhoto *photo = [[MJPhoto alloc] init];photo.image = self.photos[i];photo.srcImageView = self.subviews[i]; //设置来源哪一个UIImageView [kjphotos addObject:photo];}brower.photos = kjphotos;//3.设置默认显示的图片索引brower.currentPhotoIndex = recognizer.view.tag;//4.显示浏览器 [brower show]; }
2.网络图片
//监听图片的点击 - (void)tapPhoto:(UITapGestureRecognizer *)recognizer { //1.创建图片浏览器 MJPhotoBrowser *brower = [[MJPhotoBrowser alloc] init]; //2.告诉图片浏览器显示所有的图片 NSMutableArray *photos = [NSMutableArray array]; for (int i = 0 ; i < self.photos.count; i++) { Photo *pic = self.photos[i]; //传递数据给浏览器 MJPhoto *photo = [[MJPhoto alloc] init]; photo.url = [NSURL URLWithString:pic.bmiddle_pic]; photo.srcImageView = self.subviews[i]; //设置来源哪一个UIImageView [photos addObject:photo]; } brower.photos = photos; //3.设置默认显示的图片索引 brower.currentPhotoIndex = recognizer.view.tag; //4.显示浏览器 [brower show]; }