internal Platform()
{
_renderer = new PlatformRenderer(this);
_modals = new List <Page>();
SubscribeToAlertsAndActionSheets();
}
internal Platform()
{
_renderer = new PlatformRenderer(this);
_modals = new List<Page>();
var busyCount = 0;
MessagingCenter.Subscribe(this, Page.BusySetSignalName, (Page sender, bool enabled) =>
{
if (!PageIsChildOfPlatform(sender))
return;
busyCount = Math.Max(0, enabled ? busyCount + 1 : busyCount - 1);
UIApplication.SharedApplication.NetworkActivityIndicatorVisible = busyCount > 0;
});
MessagingCenter.Subscribe(this, Page.AlertSignalName, (Page sender, AlertArguments arguments) =>
{
if (!PageIsChildOfPlatform(sender))
return;
PresentAlert(arguments);
});
MessagingCenter.Subscribe(this, Page.ActionSheetSignalName, (Page sender, ActionSheetArguments arguments) =>
{
if (!PageIsChildOfPlatform(sender))
return;
var pageRoot = sender;
while (!Application.IsApplicationOrNull(pageRoot.RealParent))
pageRoot = (Page)pageRoot.RealParent;
PresentActionSheet(arguments);
});
}
internal Platform()
{
_renderer = new PlatformRenderer(this);
_modals = new List <Page>();
var busyCount = 0;
MessagingCenter.Subscribe(this, Page.BusySetSignalName, (Page sender, bool enabled) =>
{
if (!PageIsChildOfPlatform(sender))
{
return;
}
busyCount = Math.Max(0, enabled ? busyCount + 1 : busyCount - 1);
UIApplication.SharedApplication.NetworkActivityIndicatorVisible = busyCount > 0;
});
MessagingCenter.Subscribe(this, Page.AlertSignalName, (Page sender, AlertArguments arguments) =>
{
if (!PageIsChildOfPlatform(sender))
{
return;
}
if (Forms.IsiOS8OrNewer)
{
PresentAlert(arguments);
}
else
{
UIAlertView alertView;
if (arguments.Accept != null)
{
alertView = new UIAlertView(arguments.Title, arguments.Message, null, arguments.Cancel, arguments.Accept);
}
else
{
alertView = new UIAlertView(arguments.Title, arguments.Message, null, arguments.Cancel);
}
alertView.Dismissed += (o, args) => arguments.SetResult(args.ButtonIndex != 0);
alertView.Show();
}
});
MessagingCenter.Subscribe(this, Page.ActionSheetSignalName, (Page sender, ActionSheetArguments arguments) =>
{
if (!PageIsChildOfPlatform(sender))
{
return;
}
var pageRoot = sender;
while (!Application.IsApplicationOrNull(pageRoot.RealParent))
{
pageRoot = (Page)pageRoot.RealParent;
}
var pageRenderer = GetRenderer(pageRoot);
if (Forms.IsiOS8OrNewer)
{
PresentAlert(arguments);
}
else
{
var actionSheet = new UIActionSheet(arguments.Title, null, arguments.Cancel, arguments.Destruction, arguments.Buttons.ToArray());
actionSheet.ShowInView(pageRenderer.NativeView);
actionSheet.Clicked += (o, args) =>
{
string title = null;
if (args.ButtonIndex != -1)
{
title = actionSheet.ButtonTitle(args.ButtonIndex);
}
// iOS 8 always calls WillDismiss twice, once with the real result, and again with -1.
arguments.Result.TrySetResult(title);
};
}
});
}
internal Platform()
{
_renderer = new PlatformRenderer(this);
_modals = new List <Page>();
var busyCount = 0;
MessagingCenter.Subscribe(this, Page.BusySetSignalName, (Page sender, bool enabled) =>
{
if (!PageIsChildOfPlatform(sender))
{
return;
}
busyCount = Math.Max(0, enabled ? busyCount + 1 : busyCount - 1);
UIApplication.SharedApplication.NetworkActivityIndicatorVisible = busyCount > 0;
});
MessagingCenter.Subscribe(this, Page.AlertSignalName, (Page sender, AlertArguments arguments) =>
{
if (!PageIsChildOfPlatform(sender))
{
return;
}
if (Forms.IsiOS8OrNewer)
{
var alert = UIAlertController.Create(arguments.Title, arguments.Message, UIAlertControllerStyle.Alert);
var oldFrame = alert.View.Frame;
alert.View.Frame = new RectangleF(oldFrame.X, oldFrame.Y, oldFrame.Width, oldFrame.Height - _alertPadding * 2);
alert.AddAction(UIAlertAction.Create(arguments.Cancel, UIAlertActionStyle.Cancel, a => arguments.SetResult(false)));
if (arguments.Accept != null)
{
alert.AddAction(UIAlertAction.Create(arguments.Accept, UIAlertActionStyle.Default, a => arguments.SetResult(true)));
}
var page = _modals.Any() ? _modals.Last() : Page;
var vc = GetRenderer(page).ViewController;
vc.PresentViewController(alert, true, null);
}
else
{
UIAlertView alertView;
if (arguments.Accept != null)
{
alertView = new UIAlertView(arguments.Title, arguments.Message, null, arguments.Cancel, arguments.Accept);
}
else
{
alertView = new UIAlertView(arguments.Title, arguments.Message, null, arguments.Cancel);
}
alertView.Dismissed += (o, args) => arguments.SetResult(args.ButtonIndex != 0);
alertView.Show();
}
});
MessagingCenter.Subscribe(this, Page.ActionSheetSignalName, (Page sender, ActionSheetArguments arguments) =>
{
if (!PageIsChildOfPlatform(sender))
{
return;
}
var pageRoot = sender;
while (!Application.IsApplicationOrNull(pageRoot.RealParent))
{
pageRoot = (Page)pageRoot.RealParent;
}
var pageRenderer = GetRenderer(pageRoot);
if (Forms.IsiOS8OrNewer)
{
var alert = UIAlertController.Create(arguments.Title, null, UIAlertControllerStyle.ActionSheet);
if (arguments.Cancel != null)
{
alert.AddAction(UIAlertAction.Create(arguments.Cancel, UIAlertActionStyle.Cancel, a => arguments.SetResult(arguments.Cancel)));
}
if (arguments.Destruction != null)
{
alert.AddAction(UIAlertAction.Create(arguments.Destruction, UIAlertActionStyle.Destructive, a => arguments.SetResult(arguments.Destruction)));
}
foreach (var label in arguments.Buttons)
{
if (label == null)
{
continue;
}
var blabel = label;
alert.AddAction(UIAlertAction.Create(blabel, UIAlertActionStyle.Default, a => arguments.SetResult(blabel)));
}
if (UIDevice.CurrentDevice.UserInterfaceIdiom == UIUserInterfaceIdiom.Pad)
{
UIDevice.CurrentDevice.BeginGeneratingDeviceOrientationNotifications();
var observer = NSNotificationCenter.DefaultCenter.AddObserver(UIDevice.OrientationDidChangeNotification,
n => { alert.PopoverPresentationController.SourceRect = pageRenderer.ViewController.View.Bounds; });
arguments.Result.Task.ContinueWith(t =>
{
NSNotificationCenter.DefaultCenter.RemoveObserver(observer);
UIDevice.CurrentDevice.EndGeneratingDeviceOrientationNotifications();
}, TaskScheduler.FromCurrentSynchronizationContext());
alert.PopoverPresentationController.SourceView = pageRenderer.ViewController.View;
alert.PopoverPresentationController.SourceRect = pageRenderer.ViewController.View.Bounds;
alert.PopoverPresentationController.PermittedArrowDirections = 0; // No arrow
}
pageRenderer.ViewController.PresentViewController(alert, true, null);
}
else
{
var actionSheet = new UIActionSheet(arguments.Title, null, arguments.Cancel, arguments.Destruction, arguments.Buttons.ToArray());
actionSheet.ShowInView(pageRenderer.NativeView);
actionSheet.Clicked += (o, args) =>
{
string title = null;
if (args.ButtonIndex != -1)
{
title = actionSheet.ButtonTitle(args.ButtonIndex);
}
// iOS 8 always calls WillDismiss twice, once with the real result, and again with -1.
arguments.Result.TrySetResult(title);
};
}
});
}
