Hi,
I'm sure someone else must have hit this issue. Say you have a background
task (or aysnc web service call) that is invoked from within an
UIViewController - you start the process and let the user carry on using the
app eg. if the app has a tab bar, the user can then select another
UIViewController.
Now, what if on that initial invoke of the background task you setup has a
delegate handler on the response to handle any progress/error messages. If
you need to display that message via an UIAlertView, how do you always
display it on top (in front of) the current active controller.
eg.
FirstViewController extract:
public ButtonClickEvent()
{
ServiceClass.DoAsyncTask(delegate(RestResponse arg1,
RestRequestAsyncHandle arg2) {
var message = new UIAlertView(Constants.AppTitle,
arg1.ResponseStatus.ToString(), null, "OK");
message.Show();
});
}
}
If the user has moved away from FirstViewController, the "message.Show();"
fires, but is not displayed (I think because it's now hidden in the
background, as the current view dims slightly). Do I need to bring the
original FirstViewController to front before calling "message.Show();" or
something?!
Any tips, much appreciated!
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