ios 一个不错的图片浏览分享框架demo

demo功能：一个不错的图片浏览分享框架demo。iphone6.1 测试通过。可以浏览图片，保存，微博分享到新浪，腾讯，网易，人人等。

注：（由于各个微博的接口有时候会有调整，不一定能分享成功。只看框架，在找最新的官方分享接口将信息分享出去）

demo说明：主要代码在：PhotoViewController.m中。分享的各个接口在ShareSDK文件夹下。

框架用到了“SVProgressHUD” 第三方的控件来弹出提示层，提示 网络加载 或 提示对错。SVProgressHUD的具体说明；

和 “SDWebImage”类库来管理远程图片加载。SDWebImage的相关说明；

 
demo主要代码：   主窗口布局部分

- (void)viewDidLoad  
{  
    [super viewDidLoad];  
    self.navigationItem.title = dNaviTitle;  
    self.navigationController.navigationBar.tintColor = [UIColor blackColor];  
    self.navigationController.navigationBarHidden = YES;  
    self.navigationController.navigationBar.translucent = YES;  
    [[UIApplication sharedApplication] setStatusBarHidden:YES];  
    [[UIApplication sharedApplication] setStatusBarStyle:UIStatusBarStyleBlackTranslucent];  
    //self.navigationController.navigationBar.alpha = 0.5f;//将透明度设为50%。  
    UIBarButtonItem *spaceItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:self action:nil];  
    UIBarButtonItem *saveBarBtn = [[UIBarButtonItem alloc] initWithImage:dPicModuleImageSave style:UIBarButtonItemStylePlain target:self action:@selector(saveImage)];  
    UIBarButtonItem *spaceFlexItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFixedSpace target:self action:nil];  
    spaceFlexItem.width = 20.0;  
    //分享按钮  
    UIBarButtonItem *shareBarBtn = [[UIBarButtonItem alloc] initWithImage:dPicToolShare style:UIBarButtonItemStylePlain target:self action:@selector(shareImage)];  
      
    NSArray *barBtnArray = [NSArray arrayWithObjects:spaceItem, saveBarBtn, spaceFlexItem, shareBarBtn, nil];  
    [self setToolbarItems:barBtnArray];  
    self.navigationController.toolbar.tintColor = [UIColor blackColor];  
    self.navigationController.toolbar.translucent = YES;  
    self.navigationController.toolbarHidden = YES;  
      
    [self setWantsFullScreenLayout:YES];  
    //图片数组  
    _imageURLArray = [[NSMutableArray alloc]initWithObjects:  
                      @"http://jpp1.imghb.com/pic/pic/69/90/24/1410827669902478_a602x602.jpg",  
                      @"http://jpp1.imghb.com/pic/pic/62/21/20/1396500062212039_a602x602.jpg",  
                      @"http://jpp1.imghb.com/pic/pic/87/42/85/1405532187428506_a602x602.jpg",  
                      @"http://jpp1.imghb.com/pic/pic/99/43/0/1392392199430020_a602x602.jpg",  
                      @"http://jpp2.imghb.com/pic/pic/45/48/1/1399381845480110_a602x602.jpg",  
                      @"http://jpp2.imghb.com/pic/pic/49/50/84/1407448049508416_a602x602.jpg",  
                      @"http://jpp2.imghb.com/pic/pic/88/82/83/1402371388828392_a602x602.jpg",  
                      @"http://jpp2.imghb.com/pic/pic/94/37/71/1401133494377186_a602x602.jpg",  
                      @"http://jpp2.imghb.com/pic/pic/88/35/25/1401128288352593_a602x602.jpg", nil];  
      
    _scrollView = [[UIScrollView alloc]initWithFrame:CGRectMake(0, 0, 320, 480)];  
    [_scrollView setContentSize:CGSizeMake(320*[_imageURLArray count], 480)];  
    if ([UIScreen mainScreen].bounds.size.height >= 568)//iPhone5适配  
    {  
        _scrollView = [[UIScrollView alloc]initWithFrame:CGRectMake(0, 0, 320, 568)];  
        [_scrollView setContentSize:CGSizeMake(320*[_imageURLArray count], 568)];  
    }  
    _scrollView.pagingEnabled = YES;//设为YES时，会按页滑动  
    _scrollView.bounces = NO;//取消UIScrollView的弹性属性，这个可以按个人喜好来定  
    [_scrollView setDelegate:self];//UIScrollView的delegate函数在本类中定义  
    _scrollView.showsHorizontalScrollIndicator = YES;  
      
    _scrollView.minimumZoomScale=0.1;  
    _scrollView.maximumZoomScale=4.0;  
      
    [self.view addSubview:_scrollView];  
    [self configScrowViewWithIndex:self.itemIndex withForward:NO withOrigin:YES];  
    pageIndex = itemIndex;  
    _isBarShown = NO;  
}