在做iOS分享小程序的功能，需求是分享到微信聊天框内容,应当根据当前的商品来动态显示。
实现的过程中，发现分享出来的微信聊天框内容图片非常模糊。经过排查发现，

具体场景：点击分享,直接跳转到微信的选择聊天界面，发送的内容为标题+动态网络图片，用户点击后，打开小程序。

有问题的 图片模糊的相关代码如下：

-(void)shareClick{
    NSString* path =[NSString stringWithFormat: @"http://feiyangimage.oss-cn-shanghai.aliyuncs.com/item/1576141433704930.png",[self.title UTF8String]];
    NSURL* url = [NSURL URLWithString:[path stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]];
    NSData* data = [NSData dataWithContentsOfURL:url];
    UIImage *image = [[UIImage alloc] initWithData:data];
    
    UMSocialMessageObject *messageObject = [UMSocialMessageObject messageObject];
    UMShareMiniProgramObject *shareObject = [UMShareMiniProgramObject shareObjectWithTitle:@"韩版长款羊毛围巾 冬季格子百搭护颈披肩两用款" descr:@"" thumImage:image];
    shareObject.webpageUrl = @"兼容微信低版本网页地址";
    shareObject.userName = @"gh_1768028640ec";

    NSString *sharePath = [NSString stringWithFormat:@"pages/Goods/GoodsDes/index?id=%@&name=%@",self.goodsId,@"韩版长款羊毛围巾 冬季格子百搭护颈披肩两用款"];// 小程序路径
    shareObject.path = sharePath;
    messageObject.shareObject = shareObject;
    shareObject.miniProgramType = UShareWXMiniProgramTypeRelease; // 可选体验版和开发板
    //调用分享接口
    [[UMSocialManager defaultManager] shareToPlatform:UMSocialPlatformType_WechatSession messageObject:messageObject currentViewController:nil completion:^(id result, NSError *error) {
        [self shareResult:result error:error];
    }];
    
}

// 分享回调
-(void)shareResult:(id)result error:(NSError*)error
{
    NSLog(@"result为--%@----error为%@",result,error);
    if (!error)
    {
        [FYProgressHUDManager failedToastHudShowWithTitle:@"分享成功" AfterDelay:1.5];
    }
    else
    {
        [FYProgressHUDManager failedToastHudShowWithTitle:@"分享失败" AfterDelay:1.5];
    }
    
}

经过排查发现,问题具体原因是：

分享的出来的内容是缩略图，不是高清图，增加一行代码即可。shareObject.hdImageData = data;

解决方法如下：

-(void)shareClick{
    NSString* path =[NSString stringWithFormat: @"http://feiyangimage.oss-cn-shanghai.aliyuncs.com/item/1576141433704930.png",[self.title UTF8String]];
    NSURL* url = [NSURL URLWithString:[path stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]];
    NSData* data = [NSData dataWithContentsOfURL:url];
    UIImage *image = [[UIImage alloc] initWithData:data];
    
    UMSocialMessageObject *messageObject = [UMSocialMessageObject messageObject];
    UMShareMiniProgramObject *shareObject = [UMShareMiniProgramObject shareObjectWithTitle:@"韩版长款羊毛围巾 冬季格子百搭护颈披肩两用款" descr:@"" thumImage:image];
    shareObject.webpageUrl = @"兼容微信低版本网页地址";
    shareObject.userName = @"gh_1768028640ec";

    NSString *sharePath = [NSString stringWithFormat:@"pages/Goods/GoodsDes/index?id=%@&name=%@",self.goodsId,@"韩版长款羊毛围巾 冬季格子百搭护颈披肩两用款"];// 小程序路径
    shareObject.path = sharePath;
    messageObject.shareObject = shareObject;
    shareObject.hdImageData = data;
    shareObject.miniProgramType = UShareWXMiniProgramTypeRelease; // 可选体验版和开发板
    // 调用分享接口
    [[UMSocialManager defaultManager] shareToPlatform:UMSocialPlatformType_WechatSession messageObject:messageObject currentViewController:nil completion:^(id result, NSError *error) {
        [self shareResult:result error:error];
    }];
    
}

// 分享回调
-(void)shareResult:(id)result error:(NSError*)error
{
    NSLog(@"result为--%@----error为%@",result,error);
    if (!error)
    {
        [FYProgressHUDManager failedToastHudShowWithTitle:@"分享成功" AfterDelay:1.5];
    }
    else
    {
        [FYProgressHUDManager failedToastHudShowWithTitle:@"分享失败" AfterDelay:1.5];
    }
    
}

前后截图如下

image.png