usage_stats

Query Android usage statistics from Flutter: app usage and events, configuration changes, app standby buckets, on-device storage usage, and per-app network data. The plugin wraps Android's UsageStatsManager, NetworkStatsManager, StorageStatsManager, and PackageManager behind a single UsageStats facade.

This package is Android only. iOS does not expose comparable per-app usage data to third-party apps, so the plugin declares no iOS implementation.

Screenshots

The bundled example app showcases every API:

Install

Add usage_stats to your pubspec.yaml:

dependencies:
  usage_stats: ^2.0.0

Android setup

The plugin targets API level 23 (Android 6.0) as a minimum. Most queries need the special PACKAGE_USAGE_STATS permission, which the user grants from system settings rather than through a runtime dialog.

Add the permission to your android/app/src/main/AndroidManifest.xml, inside the manifest element:

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools">

    <uses-permission
        android:name="android.permission.PACKAGE_USAGE_STATS"
        tools:ignore="ProtectedPermissions" />

    <application ...>

Granting the permission

Send the user to the system "Usage access" screen and check whether access has been granted:

import 'package:usage_stats/usage_stats.dart';

// Opens the system Usage Access settings screen (only if not yet granted).
await UsageStats.grantUsagePermission();

// Opens the same screen unconditionally, e.g. for a "Manage access" button.
await UsageStats.openUsageAccessSettings();

// Returns true once the user has enabled access for your app.
bool? granted = await UsageStats.checkUsagePermission();

Querying usage

final endDate = DateTime.now();
final startDate = endDate.subtract(const Duration(days: 1));

// Raw usage events (foreground/background transitions, screen on/off, …).
List<EventUsageInfo> events = await UsageStats.queryEvents(startDate, endDate);

// Per-app foreground usage.
List<UsageInfo> usage = await UsageStats.queryUsageStats(startDate, endDate);

// Per-app usage aggregated by package, keyed by package name.
Map<String, UsageInfo> aggregated =
    await UsageStats.queryAndAggregateUsageStats(startDate, endDate);

// Configuration (locale/orientation/…) statistics.
List<ConfigurationInfo> configs =
    await UsageStats.queryConfiguration(startDate, endDate);

// Aggregated event statistics (Android 9 / API 28+).
List<EventInfo> eventStats =
    await UsageStats.queryEventStats(startDate, endDate);

Interval granularity

queryUsageStats and queryEventStats accept an optional intervalType that maps to UsageStatsManager.INTERVAL_*. It defaults to IntervalType.best.

final monthly = await UsageStats.queryUsageStats(
  startDate,
  endDate,
  intervalType: IntervalType.monthly,
);

Network usage

// Per-app network usage for all apps.
List<NetworkInfo> network = await UsageStats.queryNetworkUsageStats(
  startDate,
  endDate,
  networkType: NetworkType.all, // or NetworkType.wifi / NetworkType.mobile
);

// Network usage for a single package.
NetworkInfo info = await UsageStats.queryNetworkUsageStatsByPackage(
  startDate,
  endDate,
  packageName: 'com.example.app',
);

Network totals are summed across the Wi-Fi and cellular transports. When a VPN is active the platform may attribute traffic to the VPN app as well as the originating app, which can make per-app totals appear higher than expected.

Storage usage

// App, data, and cache bytes for a package (Android 8 / API 26+).
StorageInfo? storage = await UsageStats.queryStorageStats('com.example.app');
print(storage?.totalBytes);

Querying your own package needs no permission; querying other packages requires PACKAGE_USAGE_STATS.

App metadata and icons

// Label, system flag, version, and install times for one package.
AppInfo? app = await UsageStats.getAppInfo('com.example.app');

// Every installed app the caller can see (set includeSystem: false to skip
// system apps).
List<AppInfo> installed =
    await UsageStats.queryInstalledApps(includeSystem: false);

// PNG launcher icon bytes.
Uint8List? icon = await UsageStats.getAppIcon('com.example.app');

On Android 11+ (API 30) package-visibility rules apply. Without a <queries> entry in your manifest, queryInstalledApps returns only visible packages. The plugin deliberately does not request QUERY_ALL_PACKAGES, since it is a Play-policy sensitive permission.

App standby

// This app's standby bucket (no permission required, Android 9 / API 28+).
int? bucket = await UsageStats.getAppStandbyBucket();

// Whether a package is currently idle (Android 6 / API 23+).
bool? idle = await UsageStats.isAppInactive('com.example.app');

// This app's own events without the usage-access prompt (Android 9 / API 28+).
List<EventUsageInfo> ownEvents =
    await UsageStats.queryEventsForSelf(startDate, endDate);

Typed accessors

For backwards compatibility the model fields are returned as strings, mirroring the raw platform values. Every model also exposes typed getters so you do not have to parse them yourself:

final info = usage.first;
info.totalTimeInForegroundMs; // int?  (milliseconds)
info.lastTimeUsedDate;        // DateTime?

events.first.eventTypeDescription; // e.g. 'ACTIVITY_RESUMED'
network.first.rxTotalBytesValue;   // int?

totalTimeInForeground is reported in milliseconds.

API levels and permissions

Method	Min API	Permission
queryUsageStats, queryEvents, queryConfiguration, queryAndAggregateUsageStats	23	PACKAGE_USAGE_STATS
queryEventStats	28	PACKAGE_USAGE_STATS
queryNetworkUsageStats, queryNetworkUsageStatsByPackage	23	PACKAGE_USAGE_STATS
queryStorageStats	26	own package: none; others: PACKAGE_USAGE_STATS
getAppStandbyBucket, queryEventsForSelf	28	none
isAppInactive	23	PACKAGE_USAGE_STATS for other packages
getAppInfo, queryInstalledApps, getAppIcon	21	none (subject to package visibility)

API-gated methods degrade gracefully on older devices, returning null or an empty list rather than throwing.

Contributing

The Dart code is linted with flutter analyze against flutter_lints. The Android Kotlin sources are checked with detekt and ktlint:

./tool/lint_kotlin.sh

License

MIT