react-native-file-viewer

react-native-file-viewer

Native file viewer for react-native. Preview any type of file supported by the mobile device.

iOS: it uses QuickLook Framework

Android: it uses ACTION_VIEW Intent to start the default app associated with the specified file.

Windows: Start the default app associated with the specified file.

Getting started

$ npm install react-native-file-viewer --save

or

$ yarn add react-native-file-viewer

Mostly automatic installation

$ react-native link react-native-file-viewer

Manual installation

iOS

1. In XCode, in the project navigator, right click Libraries ➜ Add Files to [your project's name]
2. Go to node_modules ➜ react-native-file-viewer and add RNFileViewer.xcodeproj
3. In XCode, in the project navigator, select your project. Add libRNFileViewer.a to your project's Build Phases ➜ Link Binary With Libraries
4. Run your project (Cmd+R)

Android

1. Open up android/app/src/main/java/[...]/MainApplication.java

• Add import com.vinzscam.reactnativefileviewer.RNFileViewerPackage; to the imports at the top of the file
• Add new RNFileViewerPackage() to the list returned by the getPackages() method

1. Append the following lines to android/settings.gradle:

   include ':react-native-file-viewer'
   project(':react-native-file-viewer').projectDir = new File(rootProject.projectDir, 	'../node_modules/react-native-file-viewer/android')
   

2. Insert the following lines inside the dependencies block in android/app/build.gradle:

     compile project(':react-native-file-viewer')
   

3. Copy android/src/main/res/xml/file_viewer_provider_paths.xml to your project res/xml/ directory

4. Add the following lines to AndroidManifest.xml between the main <application></application> tag:

   ...
   <application>
   ...
   	<provider
   		android:name="com.vinzscam.reactnativefileviewer.FileProvider"
   		android:authorities="${applicationId}.provider"
   		android:exported="false"
   		android:grantUriPermissions="true">
   		<meta-data
   			android:name="android.support.FILE_PROVIDER_PATHS"
   			android:resource="@xml/file_viewer_provider_paths"
   		/>
   	</provider>
   </application>
   ....
   

Windows

Follow the instructions in the 'Linking Libraries' documentation on the react-native-windows GitHub repo. For the first step of adding the project to the Visual Studio solution file, the path to the project should be ../node_modules/react-native-file-viewer/windows/RNFileViewer/RNFileViewer.csproj.

API

open(filepath: string, options?: Object): Promise<void>

Parameter	Type	Description
filepath	string	The absolute path where the file is stored. The file needs to have a valid extension to be successfully detected. Use react-native-fs constants to determine the absolute path correctly.
options (optional)	Object	Some options to customize the behaviour. See below.

Options

Parameter	Type	Description
displayName (optional)	string	Customize the QuickLook title (iOS only).
showOpenWithDialog (optional)	boolean	If there is more than one app that can open the file, show an Open With dialogue box (Android only).
showAppsSuggestions (optional)	boolean	If there is not an installed app that can open the file, open the Play Store with suggested apps (Android only).

Usage

Open a local file

import FileViewer from 'react-native-file-viewer';

const path = // absolute-path-to-my-local-file.
FileViewer.open(path)
.then(() => {
	// success
})
.catch(error => {
	// error
});

Prompt the user to choose an app to open the file with (if there are multiple installed apps that support the mimetype)

import FileViewer from 'react-native-file-viewer';

const path = // absolute-path-to-my-local-file.
FileViewer.open(path, { showOpenWithDialog: true })
.then(() => {
	// success
})
.catch(error => {
	// error
});

Open a file from Android assets folder

Since the library works only with absolute paths and Android assets folder doesn't have any absolute path, the file needs to be copied first. Use copyFileAssets of react-native-fs.

Example (using react-native-fs):

import FileViewer from 'react-native-file-viewer';
import RNFS from 'react-native-fs';

const file = 'file-to-open.doc'; // this is your file name

// feel free to change main path according to your requirements
const dest = `${RNFS.DocumentDirectoryPath}/${file}`;

RNFS.copyFileAssets(file, dest)
.then(() => FileViewer.open(dest))
.then(() => {
   // success
})
.catch(_err => {
   /* */
});

Download and open a file (using react-native-fs)

No function about file downloading has been implemented in this package. Use react-native-fs or any similar library for this purpose.

Example (using react-native-fs):

import RNFS from 'react-native-fs';
import FileViewer from 'react-native-file-viewer';
import { Platform } from 'react-native';

function getLocalPath (url) {
  const filename = url.split('/').pop();
  // feel free to change main path according to your requirements
  return `${RNFS.DocumentDirectoryPath}/${filename}`;
}

const url = 'https://www.adobe.com/content/dam/Adobe/en/devnet/pdf/pdfs/PDF32000_2008.pdf';
const localFile = getLocalPath(url);

const options = {
  fromUrl: url,
  toFile: localFile
};
RNFS.downloadFile(options).promise
.then(() => FileViewer.open(localFile))
.then(() => {
	// success
})
.catch(error => {
	// error
});