react-native-saf-x

A module to help simplify usage of scoped storages on android.

intended to use when targeting Android API level 30+

Minimum supported API level is 24

Installation

npm install react-native-saf-x

or

yarn add react-native-saf-x

Usage

After receiving a content uri using openDocumentTree function, you can use this as if like it's a normal path like we are used to. This is the intended behaviour, if you find any problems or if something does not behave as intended, please create an issue.

Note that each method can reject when there's an unexpected error or when the permission is revoked.

Example:

import { openDocumentTree, mkdir } from "react-native-saf-x";

// somewhere in the app .....

async function testIt() {
  const doc = await openDocumentTree(true);
  if (doc && doc.uri) {
    // user has selected a directory and uri is available
    // you can save this uri as base directory in your app and reuse it anywhere you want
    await mkdir(doc.uri + '/foo/bar'); // creates foo/bar folder and subfolder at selected directory
  }
}

For more examples look at example folder in the source.

Table of contents

• Installation
• Usage
• Type aliases
• Functions
• Caveats
• Thanks to
• Contributing
• License

Type aliases

• CreateDocumentOptions
• DocumentFileDetail
• Encoding
• FileOperationOptions
• OpenDocumentOptions

Variables

• default

Functions

• copyFile
• createDocument
• createFile
• exists
• getPersistedUriPermissions
• hasPermission
• listFiles
• mkdir
• moveFile
• openDocument
• openDocumentTree
• readFile
• releasePersistableUriPermission
• rename
• stat
• unlink
• writeFile

Type aliases

CreateDocumentOptions

Ƭ CreateDocumentOptions: FileOperationOptions & { initialName?: string }

Defined in

index.tsx:90

---

DocumentFileDetail

Ƭ DocumentFileDetail: Object

Type declaration

Name	Type
lastModified	number
mime	string
name	string
size	number
type	"directory" | "file"
uri	string

Defined in

index.tsx:70

---

Encoding

Ƭ Encoding: "utf8" | "base64" | "ascii"

Defined in

index.tsx:29

---

FileOperationOptions

Ƭ FileOperationOptions: Object

Type declaration

Name	Type	Description
append?	boolean	Append data to the file. If not set file content will be overwritten.
encoding?	Encoding	Defaults to 'utf8'
mimeType?	string	mime type of the file being saved. Defaults to '*/*'

Defined in

index.tsx:79

---

OpenDocumentOptions

Ƭ OpenDocumentOptions: Object

Type declaration

Name	Type	Description
multiple?	boolean	should the file picker allow multiple documents ?
persist?	boolean	should the permission of returned document(s) be persisted ?

Defined in

index.tsx:103

Variables

default

• default: Object

Type declaration

Name	Type
copyFile	(srcUri: string, destUri: string, options?: FileTransferOptions) => Promise<null | DocumentFileDetail>
createDocument	(data: string, options?: CreateDocumentOptions) => Promise<null | DocumentFileDetail>
createFile	(uriString: string, options?: Pick<FileOperationOptions, "mimeType">) => Promise<DocumentFileDetail>
exists	(uriString: string) => Promise<boolean>
getPersistedUriPermissions	() => Promise<string[]>
hasPermission	(uriString: string) => Promise<boolean>
listFiles	(uriString: string) => Promise<DocumentFileDetail[]>
mkdir	(uriString: string) => Promise<DocumentFileDetail>
moveFile	(srcUri: string, destUri: string, options?: FileTransferOptions) => Promise<null | DocumentFileDetail>
openDocument	(options: OpenDocumentOptions) => Promise<null | DocumentFileDetail[]>
openDocumentTree	(persist: boolean) => Promise<null | DocumentFileDetail>
readFile	(uriString: string, options?: Pick<FileOperationOptions, "encoding">) => Promise<string>
releasePersistableUriPermission	(uriString: string) => Promise<void>
rename	(uriString: string, newName: string) => Promise<DocumentFileDetail>
stat	(uriString: string) => Promise<DocumentFileDetail>
unlink	(uriString: string) => Promise<boolean>
writeFile	(uriString: string, data: string, options?: FileOperationOptions) => Promise<void>

Defined in

index.tsx:259

Functions

copyFile

▸ copyFile(srcUri, destUri, options?): Promise<null | DocumentFileDetail>

Copy file from source uri to destination uri. promise Rejects if destination already exists and replaceIfDestinationExists option is not set to true. Does not support moving directories.

Parameters

Name	Type
srcUri	string
destUri	string
options?	FileTransferOptions

Returns

Promise<null | DocumentFileDetail>

Defined in

index.tsx:234

---

createDocument

▸ createDocument(data, options?): Promise<null | DocumentFileDetail>

Open the Document Picker to save a file. Returns an object of type DocumentFileDetail or null if user did not select a file.

Parameters

Name	Type
data	string
options?	CreateDocumentOptions

Returns

Promise<null | DocumentFileDetail>

Defined in

index.tsx:124

---

createFile

▸ createFile(uriString, options?): Promise<DocumentFileDetail>

Creates an empty file at given uri. Rejects if a file or directory exist at given uri.

Parameters

Name	Type
uriString	string
options?	Pick<FileOperationOptions, "mimeType">

Returns

Promise<DocumentFileDetail>

Defined in

index.tsx:169

---

exists

▸ exists(uriString): Promise<boolean>

Check if there's a document located at the given uri.

Parameters

Name	Type
uriString	string

Returns

Promise<boolean>

Defined in

index.tsx:136

---

getPersistedUriPermissions

▸ getPersistedUriPermissions(): Promise<string[]>

Returns a list of all the persisted uri permissions.

Returns

Promise<string[]>

Defined in

index.tsx:206

---

hasPermission

▸ hasPermission(uriString): Promise<boolean>

Check if you have permission to access the uri.

Parameters

Name	Type
uriString	string

Returns

Promise<boolean>

Defined in

index.tsx:131

---

listFiles

▸ listFiles(uriString): Promise<DocumentFileDetail[]>

List all files and folders in a directory uri.

Parameters

Name	Type
uriString	string

Returns

Promise<DocumentFileDetail[]>

Defined in

index.tsx:216

---

mkdir

▸ mkdir(uriString): Promise<DocumentFileDetail>

Create a directory at given uri. Automatically creates folders in path if needed. You can use it to create nested directories easily. Rejects if it fails.

Parameters

Name	Type
uriString	string

Returns

Promise<DocumentFileDetail>

Defined in

index.tsx:192

---

moveFile

▸ moveFile(srcUri, destUri, options?): Promise<null | DocumentFileDetail>

Move file from source uri to destination uri. promise Rejects if destination already exists and replaceIfDestinationExists option is not set to true. Does not support moving directories.

Parameters

Name	Type
srcUri	string
destUri	string
options?	FileTransferOptions

Returns

Promise<null | DocumentFileDetail>

Defined in

index.tsx:249

---

openDocument

▸ openDocument(options): Promise<null | DocumentFileDetail[]>

Open the Document Picker to select a file. DocumentFileDetail is always an array.

Parameters

Name	Type
options	OpenDocumentOptions

Returns

Promise<null | DocumentFileDetail[]>

DocumentFileDetail[] or null if user did not select a file.

Defined in

index.tsx:115

---

openDocumentTree

▸ openDocumentTree(persist): Promise<null | DocumentFileDetail>

Open the Document Picker to select a folder. Read/Write Permission will be granted to the selected folder. Returns an object of type DocumentFileDetail or null if user did not select a folder.

Parameters

Name	Type
persist	boolean

Returns

Promise<null | DocumentFileDetail>

Defined in

index.tsx:99

---

readFile

▸ readFile(uriString, options?): Promise<string>

Read contents of the given uri. uri must point to a file.

Parameters

Name	Type
uriString	string
options?	Pick<FileOperationOptions, "encoding">

Returns

Promise<string>

Defined in

index.tsx:141

---

releasePersistableUriPermission

▸ releasePersistableUriPermission(uriString): Promise<void>

Remove a uri from persisted uri permissions list.

Parameters

Name	Type
uriString	string

Returns

Promise<void>

Defined in

index.tsx:211

---

rename

▸ rename(uriString, newName): Promise<DocumentFileDetail>

Renames the document at given uri. uri can be file or folder. Resolves with true if successful and false otherwise.

Parameters

Name	Type
uriString	string
newName	string

Returns

Promise<DocumentFileDetail>

Defined in

index.tsx:201

---

stat

▸ stat(uriString): Promise<DocumentFileDetail>

Get details for a file/directory at given uri.

Parameters

Name	Type
uriString	string

Returns

Promise<DocumentFileDetail>

Defined in

index.tsx:221

---

unlink

▸ unlink(uriString): Promise<boolean>

Removes the file or directory at given uri. Resolves with true if delete is successful, throws otherwise.

Parameters

Name	Type
uriString	string

Returns

Promise<boolean>

Defined in

index.tsx:182

---

writeFile

▸ writeFile(uriString, data, options?): Promise<void>

Writes the given data to the file at given uri. Tries to create the file if does not already exist before writing to it. Resolves with given uriString if successful.

Parameters

Name	Type
uriString	string
data	string
options?	FileOperationOptions

Returns

Promise<void>

Defined in

index.tsx:155

Caveats

Due to simplyifing the uri structure usage, file and directories should not have the same name at a given uri. doing so can cause unexpected results. for example in a folder named "foo", do not create "bar" file and "bar" directory making the uri being "foo/bar" for both cases.

---

Thanks to

• ammarahm-ed for his work on react-native-scoped-storage which helped me jump start this module.

Contributing

See the contributing guide to learn how to contribute to the repository and the development workflow.

License

MIT