图片分享

这里主要是将图片保存到相册，微信好友、朋友圈，qq好友（qq空间分享纯图片没有解决，只能设置分享链接）

1. 图片保存到相册

UIImageWriteToSavedPhotosAlbum(_shareImage.image,self,@selector(imageSavedToPhotosAlbum: didFinishSavingWithError: contextInfo:),nil);

#pragma mark - 保存图片后的回调
- (void)imageSavedToPhotosAlbum:(UIImage*)image didFinishSavingWithError:  (NSError*)error contextInfo:(id)contextInfo

{
    if(!error) {
        
    }else {
        NSString *message = [error description];
    }
    
}

2. 微信、qq
   在分享之前需要集成微信、qq，这里使用cocoapods

pod "WechatOpenSDK"
pod "TencentOpenApiSDK"

在AppDelegate中注册

    //微信
    [WXApi registerApp:@"wxf1a8bb00646468d5" enableMTA:YES];
    
    //qq
    TencentOAuth *tencentOAuth = [[TencentOAuth alloc] initWithAppId:@"1106968509" andDelegate:self];

• 分享到微信好友

WXMediaMessage *message = [WXMediaMessage message];
        // 设置消息缩略图的方法
        //[message setThumbImage:[UIImage imageNamed:@"launch_logo"]];
        // 多媒体消息中包含的图片数据对象
        WXImageObject *imageObject = [WXImageObject object];
        
        UIImage *image = _shareImage.image;
        
        // 图片真实数据内容
        
        NSData *data = UIImagePNGRepresentation(image);
        imageObject.imageData = data;
        // 多媒体数据对象，可以为WXImageObject，WXMusicObject，WXVideoObject，WXWebpageObject等。
        message.mediaObject = imageObject;
        
        SendMessageToWXReq *req = [[SendMessageToWXReq alloc] init];
        req.bText = NO;
        req.message = message;
        req.scene = WXSceneSession;
        
        [WXApi sendReq:req];

• 分享到微信朋友圈

WXMediaMessage *message = [WXMediaMessage message];
        // 设置消息缩略图的方法
        //[message setThumbImage:[UIImage imageNamed:@"launch_logo"]];
        // 多媒体消息中包含的图片数据对象
        WXImageObject *imageObject = [WXImageObject object];
        
        UIImage *image = _shareImage.image;
        
        // 图片真实数据内容
        
        NSData *data = UIImagePNGRepresentation(image);
        imageObject.imageData = data;
        // 多媒体数据对象，可以为WXImageObject，WXMusicObject，WXVideoObject，WXWebpageObject等。
        message.mediaObject = imageObject;
        
        SendMessageToWXReq *req = [[SendMessageToWXReq alloc] init];
        req.bText = NO;
        req.message = message;
        req.scene = WXSceneTimeline;
        
        [WXApi sendReq:req];

• 分享到qq好友

UIImage *image = _shareImage.image;
        
        // 图片真实数据内容
        
        NSData *data = UIImageJPEGRepresentation(image,0.5);
        
        QQApiImageObject *imgObj = [QQApiImageObject objectWithData:data
                                                   previewImageData:data
                                                              title:@"乐伴课"
                                                        description:@"乐伴课分享"];
        SendMessageToQQReq *req = [SendMessageToQQReq reqWithContent:imgObj];
        //将内容分享到qq
        [QQApiInterface sendReq:req];

• 分享到qq空间
  不能分享纯图片到qq空间，折中方法分享链接到qq空间

UIImage *image = _shareImage.image;

        // 图片真实数据内容

        NSData *data = UIImageJPEGRepresentation(image,0.5);

        QQApiNewsObject *newsObj = [QQApiNewsObject objectWithURL:[NSURL URLWithString:@"https://lebanke.cn/Admin/happyClass/phoneappdownload.html"] title:@"乐伴课" description:@"乐伴课分享" previewImageData:data];
        SendMessageToQQReq *req = [SendMessageToQQReq reqWithContent:newsObj];
        //将内容分享到qq空间
        [QQApiInterface SendReqToQZone:req];