A React Native module that allows you to use native UI to select a file from the device library Based on react-native-image-picker

1. npm install react-native-fille-picker@latest --save
2. In the XCode's "Project navigator", right click on your project's Libraries folder ➜ Add Files to <...>
3. Go to node_modules ➜ react-native-file-picker ➜ ios ➜ select RNFilePicker.xcodeproj
4. Add RNFilePicker.a to Build Phases -> Link Binary With Libraries
5. Compile and have fun

1. npm install react-native-file-picker@latest --save

// file: android/settings.gradle
...

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

// file: android/app/build.gradle
...

dependencies {
    ...
    compile project(':react-native-file-picker')
}

<!-- file: android/src/main/AndroidManifest.xml -->
<manifest xmlns:android="https://schemas.android.com/apk/res/android"
    package="com.myApp">

    <uses-permission android:name="android.permission.INTERNET" />

    <!-- add following permissions -->
    <uses-permission android:name="android.permission.CAMERA" />
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
    <uses-feature android:name="android.hardware.camera" android:required="true"/>
    <uses-feature android:name="android.hardware.camera.autofocus" />
    <!-- -->
    ...

// file: MainActivity.java
...

import com.filepicker.FilePickerPackage; // import package

public class MainActivity extends ReactActivity {

   /**
   * A list of packages used by the app. If the app uses additional views
   * or modules besides the default ones, add more packages here.
   */
    @Override
    protected List<ReactPackage> getPackages() {
        return Arrays.<ReactPackage>asList(
            new MainReactPackage(),
            new FilePickerPackage() // Add package
        );
    }
...
}

1. In your React Native javascript code, bring in the native module:

var FilePickerManager = require('NativeModules').FilePickerManager;

2. Use it like so:

When you want to display the picker:

FilePickerManager.showFilePicker((response) => {
  console.log('Response = ', response);

  if (response.didCancel) {
    console.log('User cancelled file picker');
  }
  else if (response.error) {
    console.log('FilePickerManager Error: ', response.error);
  }
  else {
    this.setState({
      file: response
    });
  }
});