.NET MAUI exposes device features through APIs shared by every platform: location, camera, files, connectivity, device information. Before using them, though, you need permissions.

Requesting a permission

public async Task<Location?> CurrentLocationAsync()
{
    var status = await Permissions.CheckStatusAsync<Permissions.LocationWhenInUse>();
    if (status != PermissionStatus.Granted)
        status = await Permissions.RequestAsync<Permissions.LocationWhenInUse>();

    if (status != PermissionStatus.Granted)
        return null; // the user refused: the app must keep working

    return await Geolocation.Default.GetLocationAsync(
        new GeolocationRequest(GeolocationAccuracy.Medium, TimeSpan.FromSeconds(10)));
}

On Android and iOS, permissions must also be declared in the platform files (AndroidManifest.xml and Info.plist), with a clear explanation of why: the stores check it.

Picking a photo

var photo = await MediaPicker.Default.PickPhotoAsync();
if (photo is not null)
{
    await using var stream = await photo.OpenReadAsync();
    await _upload.SendAsync(stream, photo.FileName);
}

Connectivity

if (Connectivity.Current.NetworkAccess != NetworkAccess.Internet)
{
    await Shell.Current.DisplayAlert("Offline", "Data will be sent as soon as you are back online.", "OK");
}

Good practices

• Ask for permissions only when needed, in a context where the user understands why.
• Always handle refusal: the app must not get stuck.
• For features not covered by the shared APIs, use platform-specific code in the Platforms folders or partial classes.