iOS AFN上传图片(压缩图片)详细

利用AFN封装上传多张图片方法,并压缩图片体积

+ (void)CommentPicWithDic:(NSDictionary *)dic//上传图片时可能有的附加条件如userid;
                 withImages:(NSDictionary *)imageDic//存图片的字典
                    success:(void (^)(NSDictionary *))success
                      faile:(void (^)(NSError *))faile
{
    NSString *urlStr = @"上传到的地址";
    AFHTTPRequestOperationManager *Manager = [AFHTTPRequestOperationManager manager];
    Manager.responseSerializer.acceptableContentTypes = [NSSet setWithObject:@"text/html"];
    [afManager POST:urlStr parameters:dic constructingBodyWithBlock:^(id<AFMultipartFormData> formData){
        for (id key in imageDic) {
            UIImage *image = [imageDic objectForKey:key];
//FileData:图片压缩后的data类型
//name: 后台规定的key
//fileName:自己给文件起名
//mimeType :图片类型
            [formData appendPartWithFileData:UIImagePNGRepresentation(image) name:[NSString stringWithFormat:@"%@",key] fileName:[NSString stringWithFormat:@"%@.png",key] mimeType:@"image/png"];
        }
    }success:^(AFHTTPRequestOperation *operation, id responseObject){
       
        success(responseObject);
    }failure:^(AFHTTPRequestOperation *operation, NSError *error){
       
        faile(error);
    }];
}

if (imgsAry.count != 0){//存图片的数组
            for (int j = 0; j < imgsAry.count; j++) {
                 UIImage * img = imgsAry[j];
                NSData *imgData = UIImagePNGRepresentation(img);//亚索体积
                if (imgData.length > 1024000) {//图片不大于1M
                    CGSize imgSize = CGSizeMake(img.size.width / 2, img.size.height / 2);
                    img = [self OriginImage:img scaleToSize:imgSize];//亚索图片尺寸
                }
                 [imgDic setObject:img forKey:[NSString stringWithFormat:@"aaa%d",j + 1]];//后台让你传的图片对应的key
            }
//方法使用
[APIManager CommentPicWithDic:imgInfoDic withImages:imgDic success:^(NSDictionary *info) {
                NSLog(@"%@",info);
            } faile:^(NSError *error) {
                NSLog(@"0000%@",error);
            }];

//图片处理，图片压缩
- (UIImage*)OriginImage:(UIImage *)image scaleToSize:(CGSize)size {
    UIGraphicsBeginImageContext(size);  //你所需要的图片尺寸
    [image drawInRect:CGRectMake(0, 0, size.width, size.height)];
    UIImage* scaledImage = UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext();
    return scaledImage;   //返回已变图片
}

对您有用的话,可否关注下本人?以此激励我和您的共同提高,谢谢了.

12.5
对于太大的图片还是有缺陷,求大神给建议

3.2
自问自答.想起来了更新下备忘

//传图片
- (void)PostImgWithDic:(NSDictionary *)dic
               withImg:(NSDictionary *)imgDic
                   url:(NSString *)url
          successBlock:(SuccessBlock)successBlock
          failureBlock:(FailureBlock)failureBlock
{
//    AFHTTPSessionManager *manager = [self baseHtppRequest];
    AFHTTPSessionManager *postAvatarManager = [AFHTTPSessionManager manager];
    postAvatarManager.responseSerializer= [AFHTTPResponseSerializer serializer];
    [postAvatarManager POST:url parameters:dic constructingBodyWithBlock:^(id<AFMultipartFormData>  _Nonnull formData) {
        if (imgDic.allKeys.count == 0) {
            NSLog(@"没有图片上传");
        }else
        {
            for (id key in imgDic) {
                UIImage *image = [imgDic objectForKey:key];
                
                NSData *data = [[NSData alloc] init];
                data = UIImageJPEGRepresentation(image, 1.0);
                CGFloat count = 100;
                DLog(@"图片大小%ld",data.length);
                while (data.length > 1024000) {
                    count--;
                    data =  UIImageJPEGRepresentation(image, count / 100);
                    DLog(@"变化图片大小%ld,%f",data.length,count / 100);
                }

                
                [formData appendPartWithFileData: data name:[NSString stringWithFormat:@"%@",key] fileName:[NSString stringWithFormat:@"%@.jpeg",key] mimeType:@"image/jpeg"];//Type:@"image/jpeg"fileName:[NSString stringWithFormat:@"%@.png"
            }
        }
        
    } progress:^(NSProgress * _Nonnull uploadProgress) {
        nil;
    } success:^(NSURLSessionDataTask * _Nonnull task, id  _Nullable responseObject) {
//        NSLog(@"上传图片成功了AFN ");
        DLog(@"上传图片成功了AFN ");
        successBlock(responseObject);
    } failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {
        NSString *errorStr = [error.userInfo objectForKey:@"NSLocalizedDescription"];
//        NSLog(@"上传图片失败了了AFN ");
        DLog(@"上传图片失败了了AFN ");
        failureBlock(errorStr);
    }];
}