device_preview take app screenshots offline to external storage
a small utility code to save device_preview screenshots 📱 on device storage easily and offline, to easily copy or move them to upload to App Store (google play store application screenshots).
Screenshots taken can be edited or uploaded as is to play store
- ❗
supports android for now
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void main() {
WidgetsFlutterBinding.ensureInitialized();
runApp(
DevicePreview(
enabled: !kReleaseMode,
onScreenshot: (screenshot) async {
// invoked to save screenshot to user device storage
final bytes = screenshot.bytes;
final savedScreenshot = await savePreviewScreenshot(bytes: bytes, directory: 'DevicePreviewScreenshots');
return savedScreenshot;
},
builder: (context) => MyApp(),
),
);
}Future<String> savePreviewScreenshot({Uint8List bytes, String directory: 'DevicePreviewScreenshots'}) async {
final bool _permissionStorage = await hasConfirmedStoragePermission();
if (_permissionStorage) {
final extDirectory = await ExtStorage.getExternalStorageDirectory();
final dirName = await Directory('$extDirectory/$directory').create(recursive: true);
final fname = 'screenshot-${DateTime.now().toIso8601String()}.png';
final fileP = '${dirName.path}/$fname';
final File file = File(fileP);
final _result = await file.writeAsBytes(bytes, mode: FileMode.writeOnly);
return _result.path;
}
else {
await askStoragePermission();
return '';
}
}- device_preview preview your app on different devices, test responsiveness
- permission_handler request permission to storage
- ext_storage get access to device external | internal accessible storage
ANDROID ONLY
This project is a starting point for a Flutter application.
A few resources to get you started if this is your first Flutter project:
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