Skip to content

DOWNLOADS_FEATURE.md

Latest commit

 

History

History
163 lines (136 loc) · 5.47 KB

DOWNLOADS_FEATURE.md

File metadata and controls

163 lines (136 loc) · 5.47 KB

Downloads Feature Implementation Summary

Overview

Successfully added a comprehensive downloads management system to the PrivacyFirst app with full WebView integration.

What Was Added

1. Data Models

File: app/src/main/java/com/secure/privacyfirst/data/DownloadItem.kt

  • DownloadItem data class to represent downloaded files
  • DownloadStatus enum (PENDING, DOWNLOADING, COMPLETED, FAILED, CANCELLED)
  • Extension function toReadableSize() to format file sizes

2. Download Manager Helper

File: app/src/main/java/com/secure/privacyfirst/utils/DownloadManagerHelper.kt

  • Manages all download operations
  • Tracks download history using SharedPreferences
  • Integrates with Android's DownloadManager
  • Features:
    • Start downloads with automatic tracking
    • Update download status via BroadcastReceiver
    • Open downloaded files with appropriate apps
    • Share files via FileProvider
    • Delete individual downloads or clear all
    • Persist download history across app restarts

3. Downloads Screen UI

File: app/src/main/java/com/secure/privacyfirst/ui/screens/DownloadsScreen.kt

  • Beautiful Material Design 3 UI
  • Features:
    • List view of all downloads with status badges
    • File type icons (image, video, audio, PDF, etc.)
    • File size and timestamp display
    • Empty state when no downloads exist
    • Download statistics card
    • Action menu for each file (Open, Share, Delete)
    • Confirmation dialogs for delete operations
    • Clear all downloads option

4. Settings Integration

File: app/src/main/java/com/secure/privacyfirst/SettingsActivity.kt

  • Added "Storage" section in settings
  • New "Downloads" menu item with description
  • Navigation route to DownloadsScreen
  • Consistent UI with existing settings items

5. WebView Integration

File: app/src/main/java/com/secure/privacyfirst/ui/screens/WebViewScreen.kt

  • Updated DownloadListener to use DownloadManagerHelper
  • Automatic download tracking when files are downloaded
  • Respects security level settings (downloads disabled in HIGH security)
  • Shows proper toast notifications
  • Extracts filename from content disposition headers

6. Permissions & Configuration

File: app/src/main/AndroidManifest.xml

  • Added READ_EXTERNAL_STORAGE permission (for Android <= 12)
  • Added WRITE_EXTERNAL_STORAGE permission (for Android <= 12)
  • Added FileProvider configuration for secure file sharing

File: app/src/main/res/xml/file_paths.xml (NEW)

  • FileProvider paths for accessing downloaded files
  • Required for sharing files on Android 7.0+

Features

Download Management

  • ✅ Track all downloads from WebView
  • ✅ Show download progress and status
  • ✅ Automatic status updates when downloads complete
  • ✅ Persist download history across app sessions
  • ✅ View download details (size, date, status)

File Operations

  • ✅ Open files with appropriate apps
  • ✅ Share files via Android's share sheet
  • ✅ Delete individual downloads
  • ✅ Clear all downloads at once
  • ✅ Secure file access via FileProvider

Security Integration

  • ✅ Respects app security levels
  • ✅ Downloads disabled in HIGH security mode
  • ✅ Proper permission handling
  • ✅ Secure file URI generation

User Experience

  • ✅ Material Design 3 UI
  • ✅ File type specific icons
  • ✅ Readable file sizes
  • ✅ Relative timestamps (e.g., "2h ago")
  • ✅ Empty state message
  • ✅ Confirmation dialogs
  • ✅ Toast notifications
  • ✅ Download statistics

How to Use

For Users

  1. Open the app and navigate to Settings
  2. Tap on "Downloads" in the Storage section
  3. View all your downloaded files
  4. Tap a file to open it
  5. Use the menu (⋮) for more options:
    • Open with specific app
    • Share via other apps
    • Delete the file
  6. Use the sweep icon (🗑️) to clear all downloads

For Downloads via WebView

  • Downloads will automatically appear in the Downloads page
  • Files are saved to the device's Downloads folder
  • Download notifications show progress
  • Once complete, files can be managed from the Downloads screen

Technical Details

Storage

  • Downloads metadata stored in SharedPreferences as JSON
  • Actual files stored in Android's public Downloads directory
  • FileProvider used for secure file access

Architecture

  • StateFlow for reactive UI updates
  • Kotlin Coroutines for async operations
  • Jetpack Compose for modern UI
  • Android DownloadManager for reliable downloads

Permissions

  • Storage permissions only requested for Android 12 and below
  • Android 13+ uses scoped storage (no permissions needed)
  • FileProvider grants temporary URI permissions for sharing

Testing Checklist

  • Download a file from WebView
  • Verify file appears in Downloads page
  • Open downloaded file
  • Share downloaded file
  • Delete individual download
  • Clear all downloads
  • Check empty state
  • Test with different file types (PDF, image, etc.)
  • Test on different Android versions
  • Verify downloads respect security levels

Notes

  • Downloads are disabled when security level is set to HIGH
  • The app automatically handles download completion notifications
  • File paths are stored as URIs for compatibility
  • Download history survives app restarts
  • Deleting a download removes both the metadata and the actual file

Future Enhancements (Optional)

  • Add search/filter functionality
  • Sort downloads by name, date, or size
  • Show download progress in real-time
  • Add pause/resume functionality
  • Export download history
  • Add file preview for images/PDFs
  • Implement download queue management