async_wallpaper 3.2.0

Set wallpapers on Android asynchronously. Also supports video live wallpapers.

async_wallpaper

Flutter wallpaper plugin with support for:

• static wallpaper from URL, file path, content URI, or bytes
• home, lock, or both targets
• live wallpaper from video or OpenGL shader
• capability check and truthful operation results
• download to Photos (iOS and Android)

Demo

Example Demo	Example App Screenshot

Version 3.2.0 highlights

• New structured API: applyWallpaper, setVideoWallpaper, openLiveWallpaperPreview, setOpenGlLiveWallpaper.
• New WallpaperSource (url, filePath, contentUri, bytes) with defensive copy for bytes.
• New getCapabilities() and WallpaperOperationResult with per-target results.
• Video needs prepare then preview. OpenGL needs GLSL ES 1.00 shader (1-60 FPS).
• 3.1 API stays available for source compatibility. goToHome stays but does nothing.

Version 3.1.0 highlights

• Flutter baseline: 3.41.4
• Android wallpaper rotation APIs: start, stop, status, and rotate now.
• Mixed rotation playlist support for URL and file sources with local caching.
• Rotation order modes: sequential and shuffle.
• Rotation triggers for interval, charging connected, and time-of-day windows.
• Minimum rotation interval of 15 minutes.
• Active hours configuration for time-of-day trigger.
• Basic iOS support with download-only capability (save wallpaper to Photos).
• Cross-platform downloadWallpaper(...) API (iOS + Android).

Version 3.0.0 highlights

• Flutter baseline: 3.41.4
• Android tooling: AGP 8.11.1, Gradle 8.14, Kotlin plugin 2.2.20, Java 17
• Android minSdk raised to 24
• Android host code migrated from Java to Kotlin
• Breaking API redesign to typed enums, request objects, and result objects

Requirements

• Flutter >=3.41.4
• Dart >=3.9.0 <4.0.0
• Android minSdk 24
• iOS 13.0+ (download support only)

Installation

dependencies:
  async_wallpaper: ^3.2.0

Usage

import 'package:async_wallpaper/async_wallpaper.dart';

Apply static wallpaper

final WallpaperOperationResult result = await AsyncWallpaper.applyWallpaper(
  const StaticWallpaperRequest(
    source: WallpaperSource.url('https://example.com/wallpaper.jpg'),
    target: WallpaperTarget.both,
    scaleMode: WallpaperScaleMode.centerCrop,
    strategy: WallpaperApplyStrategy.direct,
  ),
);
if (result.status == WallpaperOperationStatus.applied) {
  // For `both`, make sure that you read `result.home` and `result.lock` separately.
}

Sources: WallpaperSource.url, filePath, contentUri, bytes. No picker dependency is necessary. See example/README.md for editable samples.

Check capabilities first

final WallpaperCapabilities c = await AsyncWallpaper.getCapabilities();
if (c.supportsStaticWallpaper && c.canSetWallpaper) {
  // Show the action.
}

requiresForeground means one flow needs system UI. direct static apply can still run in background.

Video live wallpaper

final req = VideoWallpaperRequest(
  source: WallpaperSource.filePath('/storage/emulated/0/Download/loop.mp4'),
  target: WallpaperTarget.home,
);
final prepared = await AsyncWallpaper.setVideoWallpaper(req);
if (prepared.status == WallpaperOperationStatus.awaitingUserConfirmation) {
  await AsyncWallpaper.openLiveWallpaperPreview(req);
}

previewOpened means the system UI opened. It does not mean the user accepted.

OpenGL live wallpaper (Android only)

Check supportsOpenGlLiveWallpaper first. Use GLSL ES 1.00, void main(), 1-60 FPS.

Download wallpaper (iOS + Android)

await AsyncWallpaper.downloadWallpaper(const DownloadWallpaperRequest(url: 'https://example.com/wallpaper.jpg'));

Legacy 3.1 API

setWallpaper, setLiveWallpaper, openWallpaperChooser, and Material You helpers stay available. New code must use the structured API.

Wallpaper rotation (Android only)

final result = await AsyncWallpaper.startWallpaperRotation(
  const WallpaperRotationRequest(
    sources: <WallpaperRotationSource>[
      WallpaperRotationSource(sourceType: WallpaperSourceType.url, source: 'https://example.com/wallpaper1.jpg'),
      WallpaperRotationSource(sourceType: WallpaperSourceType.file, source: '/storage/emulated/0/Download/wallpaper2.jpg'),
    ],
    target: WallpaperTarget.both,
    intervalMinutes: 60,
    order: WallpaperRotationOrder.shuffle,
    triggers: <WallpaperRotationTrigger>{
      WallpaperRotationTrigger.interval,
      WallpaperRotationTrigger.charging,
      WallpaperRotationTrigger.timeOfDay,
    },
    activeHoursStart: 6,
    activeHoursEnd: 23,
  ),
);
await AsyncWallpaper.getWallpaperRotationStatus();
await AsyncWallpaper.rotateWallpaperNow();
await AsyncWallpaper.stopWallpaperRotation();

Minimum interval is 15 minutes. URL entries are cached locally before rotation starts.

Platform behavior

• Android: apply, video, OpenGL, chooser, rotation, and download — when getCapabilities() allows.
• iOS: download only. Other calls return unsupported.
• Web/desktop: return unsupported.
• The package shows no toast. Your app shows its own UI from the result.

Background work

Use WallpaperApplyStrategy.direct for WorkManager. Do not use systemCropper, systemPicker, or preview from a worker. They need foreground and return foregroundRequired.

iOS permission

Add to Info.plist for download:

<key>NSPhotoLibraryAddUsageDescription</key>
<string>Allows saving downloaded wallpapers to your Photos library.</string>

Migration

• From 2.x: HOME_SCREEN etc. → WallpaperTarget. Boolean setters → typed requests. Toasts removed.
• From 3.1: WallpaperRequest(sourceType+source) → StaticWallpaperRequest(source: WallpaperSource...). Boolean success → WallpaperOperationResult. goToHome does nothing.

Details: doc/android-compatibility.md, doc/issues-3.2.0.md.

Bugs and Feature Requests

• Report bugs via: Bug report template
• Request features via: Feature request template
• Include device model, Android version, and steps to reproduce.

Contributing

Contributions are welcome. Read CONTRIBUTING.md before you open a PR.

License

MIT