protected async override void OnAppearing()
{
base.OnAppearing();
TokenSource = new CancellationTokenSource();
Token = TokenSource.Token;
var UpdateTask = new Task(async() =>
{
try
{
while (!Token.IsCancellationRequested)
{
await Task.Delay(TimeSpan.FromSeconds(2));
var update = await _server.GetRequestsDetailListTech(Settings.Person.Phone, GetLastIdMessage());
if (update.Error == null)
{
//Settings.DateUniq = "";
foreach (var each in update.Messages)
{
if (!messages.Contains(each))
{
//Device.BeginInvokeOnMainThread(() => messages.Add(each));
Device.BeginInvokeOnMainThread(async() =>
{
addAppMessage(each,
messages.Count > 1 ? messages[messages.Count - 2].AuthorName : null);
var lastChild = baseForApp.Children.LastOrDefault();
if (lastChild != null)
{
// Device.BeginInvokeOnMainThread(async () =>
//await scrollFroAppMessages.ScrollToAsync(lastChild.X, lastChild.Y + 30, true)
//);
await scrollFroAppMessages.ScrollToAsync(lastChild.X, lastChild.Y + 30, false);
//await scrollFroAppMessages.ScrollToAsync(lastChild, ScrollToPosition.End,
// false);
}
});
}
request.Messages.Add(each);
}
//Device.BeginInvokeOnMainThread(() => additionalList.ScrollTo(messages[messages.Count - 1], 0, true));
}
}
}
catch (Exception e)
{
}
}, Token);
try
{
UpdateTask.Start();
}
catch
{
}
await Task.Delay(TimeSpan.FromSeconds(1));
if (Device.RuntimePlatform == "Android")
{
return;
try
{
if (!PermissionAsked)
{
var camera_perm =
await Plugin.Permissions.CrossPermissions.Current.CheckPermissionStatusAsync(Permission
.Camera);
if (camera_perm != PermissionStatus.Granted)
{
await CrossPermissions.Current.RequestPermissionsAsync(Permission.Camera,
Permission.Storage);
}
}
}
catch
{
}
finally
{
PermissionAsked = true;
}
}
}
