It’s a Java source code that can be easy integrated into your Android project. How to Integrate 1. Copy all files from app/src/main/res/drawable/ folder and all next files into your project: /app/src/main/java/com/filechooser/app/FileChooser.java /app/src/main/res/values/file_chooser_strings.xml /app/src/main/res/layout/file_chooser.xml /app/src/main/res/layout/file_chooser_item.xml /app/src/main/res/xml/file_provider.xml 2. Add permission into AndroidManifest.xml: <uses-permission android:name=”android.permission.READ_EXTERNAL_STORAGE” /> 3. Add chooser activity into AndroidManifest.xml: <activity android:name=”.FileChooser” …/> 4. Add…