public async Task ExecuteOpenCameraCommand()
{
if (IsBusy)
{
return;
}
IsBusy = true;
try
{
await Task.Run(async() =>
{
var status = await CrossPermissions.Current.CheckPermissionStatusAsync(Permission.Camera);
var res = App.Current.Resources;
if (status != PermissionStatus.Granted)
{
if (await CrossPermissions.Current.ShouldShowRequestPermissionRationaleAsync(Permission.Camera))
{
await App.Current.MainPage.DisplayAlert((string)res["Permission.Title.Camera"], (string)res["Permission.Message.AppNeedCamera"], (string)res["Permission.Cancel.Okay"]);
}
var results = await CrossPermissions.Current.RequestPermissionsAsync(Permission.Camera);
//Best practice to always check that the key exists
if (results.ContainsKey(Permission.Camera))
{
status = results[Permission.Camera];
}
}
//TODO: Double check?
if (status == PermissionStatus.Granted)
{
_openCVService.OpenCamera();
}
else if (status != PermissionStatus.Unknown)
{
await App.Current.MainPage.DisplayAlert((string)res["Permission.Title.Camera"], (string)res["Permission.Message.AppNotPermitted"], (string)res["Permission.Cancel.Okay"]);
}
});
}
catch (Exception)
{
var res = App.Current.Resources;
await App.Current.MainPage.DisplayAlert((string)res["Permission.Title.Camera"], (string)res["Permission.Message.AppNotPermitted"], (string)res["Permission.Cancel.Okay"]);
}
IsBusy = false;
}
