如何在 Android 的 AWS Amplify 中指定存储路径。？

Question

我能够使用 AWS Amplify Storage 类别存储文件。但是，它们都存储在我存储桶中公共文件夹的顶部。如何在公用文件夹中指定路径？

我参考了 Amplify 存储的 JavaScript 和 Android 文档。

这是我的代码。

Amplify.Storage.uploadFile(
    "filenmae.txt",
    filename.getAbsolutePath(),
    new ResultListener<StorageUploadFileResult>() {
        @Override
        public void onResult(StorageUploadFileResult result) {
            Log.i("StorageQuickStart", "Successfully uploaded: " + result.getKey());
        }

        @Override
        public void onError(Throwable error) {
            Log.e("StorageQuickstart", "Upload error.", error);
        }
    }
);

Answer 1

如果要将文件上传到特定文件夹，则只需将文件夹名称路径前缀添加到方法Amplify.Storage.uploadFile() 的第一个关键参数。

举例

假设您要将文件上传到名为“game”的文件夹中。

// Name of your folder with '/' in the end to make it like path prefix
String folderGame = "game/";

// here we just adding it before the name of your file 
String key = folderGame +"filenmae.txt";            

/*
 * Now the value in key will look like "game/filenmae.txt" and 
 * pass it in method as first parameter where you were passing 
 * the name previously.
 */
Amplify.Storage.uploadFile(
    key,
    filename.getAbsolutePath(),
    new ResultListener<StorageUploadFileResult>() {
        @Override
        public void onResult(StorageUploadFileResult result) {
            Log.i("StorageQuickStart", "Successfully uploaded: " + result.getKey());
        }

        @Override
        public void onError(Throwable error) {
            Log.e("StorageQuickstart", "Upload error.", error);
        }
    }
);

额外

对于下载、删除等其他方法，您必须执行相同的操作才能访问这些文件。只需添加前缀即可。