Question

我有5个ImageView和5个按钮，基于我获得5个图像并将其添加到数组中。现在我想将它们发送到服务器，其他参数也像userId，accessToken。

我的服务器想要的输入结构是

{
"user_id":"26",
 "images":[{"image_id":"0","image_data":"BASE 64"}], 
 "access_token":"MQT3NaF4Njk8M3EzwEU9yUZbymM4B9NqAaSmFm8RE8l3S8JQQEpAwFEpz8lASWlUw78IwnYhSCB9R7So"
     }

我已经创建了一个DAO类，我在其中创建了一个方法结构来将数据发布为

 -(void)userProfileImagesWithUserId:(NSInteger)userId
                        Images:(NSMutableArray *)images
                   accessToken:(NSString *)AccessToken
                 urlwithString:(NSString *)url
           withSuccessCallBack:(ResponseBlock)responseBlock
{
MGMainDAO *mainDao = [MGMainDAO new];

NSDictionary *params = @{@"user_id":[NSNumber numberWithInteger:userId],
                         @"images":[images mutableCopy],
                         @"access_token":AccessToken};




[mainDao postRequest:url withParameters:params withCompletionBlock:^(id responseData,NSError *error){

    if (!error) {

        if ([responseData isKindOfClass:[NSDictionary class]]) {


            responseBlock(YES,responseData,nil);

        }

    }else{

        responseBlock(NO,nil,error);
    }

}];

}

现在在我的视图中，我将此方法称为

MG_UserMultipleImgDAO *userDao = [MG_UserMultipleImgDAO new];

  [userDao userProfileImagesWithUserId:userId Images:mainArr accessToken:accessToken urlwithString:[NSString stringWithFormat:@"%@%@",BASE_URL,userImagesPostFix] withSuccessCallBack:^(BOOL Success, NSDictionary *responseData, NSError *error)

这不起作用，它将Images Array视为零，我怎样才能实现这一点。

我将我的图像转换为NSData

for (int i = 0; i < _arrImages.count; i++) {

  NSData *base64Data = [UIImageJPEGRepresentation([_arrImages objectAtIndex:i],0.5) base64EncodedDataWithOptions:0];

    NSString* str = [[NSString alloc] initWithData:base64Data encoding:NSUTF8StringEncoding];

    NSString *base64Image = [NSString stringWithFormat:@"(%@,%@%d),", str, @"image", i+1];

    [result appendFormat:@"%@", base64Image];

    [encodedImages addObject:result];

Answer 1

您可以为这样的图片创建mainArr -

NSMutableArray *mainArr = [[NSMutableArray alloc]init];

    for (int i = 0; i < _arrImages.count; i++) {
        NSMutableDictionary *dict = [[NSMutableDictionary alloc]init];

        NSData * base64Data = [UIImageJPEGRepresentation([_arrImages objectAtIndex:i], 0.5) base64EncodedDataWithOptions:NSDataBase64Encoding64CharacterLineLength];
        NSString* str = [[NSString alloc] initWithData:base64Data encoding:NSUTF8StringEncoding];

        [dict setObject:str forKey:@"image_data"];
        [dict setObject:[@(i) stringValue] forKey:@"image_id"];

        [mainArr addObject:dict];
    }

从你的viewcontroller调用你的方法 -

[userDao userProfileImagesWithUserId:userId Images:mainArr accessToken:accessToken urlwithString:[NSString stringWithFormat:@"%@%@",BASE_URL,userImagesPostFix] withSuccessCallBack:^(BOOL Success, NSDictionary *responseData, NSError *error);

Answer 2

是的，你的词典存在问题。

这是你传递的内容

NSString *base64Image = [NSString stringWithFormat:@"(%@,%@%d),", str, @"image", i+1];

上面的代码只会创建字符串，而你的数组中需要两个参数 1.你的image_id 2. Base64字符串中的图像

您可以创建所需结构的方式是NSDictionary，您可以通过@Dipankar Das的答案创建它

但仍然在这里我避免使用NSMutableDictionry并将使用NSDictionary，

您可以在内部创建NSDictionary for循环 // Base64转换来自@Dipankar Das的答案

NSData * base64Data = [UIImageJPEGRepresentation([_arrImages objectAtIndex:i], 0.5) base64EncodedDataWithOptions:NSDataBase64Encoding64CharacterLineLength];
NSString* str = [[NSString alloc] initWithData:base64Data encoding:NSUTF8StringEncoding];

NSDictionary * myDict = @{@"image_data":str,@"image_id":[NSString stringWithFormat:@"%d",i],};

在ios中将一组多个图像发布到服务器

2 个答案: