将图像上传到Firebase [英] Uploading images to Firebase

问题描述

我想像这样上传图片到Firebase：

I'm trying to upload images to Firebase like this:

Firebase *ref = [[Firebase alloc] initWithUrl:@"https://<app-name>.firebaseio.com/posts"];
Firebase *newPost = [ref childByAutoId];

NSDictionary *newPostData = @{
                              @"image" : [self encodeToBase64String:image]
                              };
[newPost updateChildValues:newPostData];

我使用此代码对图像进行编码：

I'm using this code to encode the image:

- (NSString *)encodeToBase64String:(UIImage *)image {
return [UIImagePNGRepresentation(image) base64EncodedStringWithOptions:NSDataBase64Encoding64CharacterLineLength];
}

但这不工作，因为字符串超出最大大小：

But this does not work as the string exceeds the maximum size:

由于未捕获异常而终止应用程序InvalidFirebaseData，reason：'（updateChildValues :)字符串超过最大大小10485760 utf8字节：

我该如何解决这个问题？

What can I do to resolve this problem? I haven't found anything online in regards to iOS development and images when using Firebase.

推荐答案

如果图片太大，你应该存储一个较小的图像。让我引用自己：如何通过Android将文件保存到Firebase主机文件夹中的映像位置？

If the image is too big, you should store a smaller image. Let me quote myself: How do you save a file to a Firebase Hosting folder location for images through android?

Firebase数据库允许您存储JSON数据。虽然二进制数据不是JSON支持的类型，但可以对base64中的二进制数据进行编码，从而将图像存储在（大）字符串中。 [但是]虽然这是可能的，但它不建议任何东西，但小图像或作为一个好奇心，看看它可以做。

The Firebase Database allows you to store JSON data. While binary data is not a type that is supported in JSON, it is possible to encode the binary data in say base64 and thus store the image in a (large) string. [But] while this is possible, it is not recommended for anything but small images or as a curiosity to see that it can be done.

您最好的选择通常是将图像存储在第三方图像存储服务上。

Your best option is typically to store the images on a 3rd party image storage service.

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