| public Start ( ) : System.Threading.Tasks.Task | ||
| return | System.Threading.Tasks.Task | |
public static async Task <SignalRClient> CreateAndStart(string url)
{
var client = new SignalRClient(url);
await client.Start();
return(client);
}
public App()
{
//show an error if the connection doesn't succeed for some reason
SignalRClient.Start().ContinueWith(task => {
if (task.IsFaulted)
{
MainPage.DisplayAlert("Error", "An error occurred when trying to connect to SignalR: " + task.Exception.InnerExceptions[0].Message, "OK");
}
});
//try to reconnect every 10 seconds, just in case
Device.StartTimer(TimeSpan.FromSeconds(10), () => {
if (!SignalRClient.IsConnectedOrConnecting)
{
SignalRClient.Start();
}
return(true);
});
var usernameStack = new UsernameStackLayout();
var sendMessage = new SendMessageStackLayout();
var listView = new ChatListViewStackLayout();
var connectionLabel = new Label {
HorizontalOptions = LayoutOptions.CenterAndExpand,
BindingContext = SignalRClient
};
connectionLabel.SetBinding(Label.TextProperty, "ConnectionState");
// The root page of your application
MainPage = new ContentPage
{
Padding = new Thickness(10, Device.OnPlatform(20, 0, 0), 10, 5),
Content = new StackLayout
{
Children =
{
new Label {
FontSize = 12.0,
HorizontalOptions = LayoutOptions.CenterAndExpand,
Text = "SignalR + Xamarin!"
},
usernameStack,
sendMessage,
listView,
connectionLabel
}
}
};
sendMessage.MessageSent += (message) => {
listView.AddText("Me: " + message);
SignalRClient.SendMessage(usernameStack.UsernameTextbox.Text, message);
};
SignalRClient.OnMessageReceived += (username, message) => {
listView.AddText(username + ": " + message);
};
}
public static async Task<SignalRClient> CreateAndStart(string url)
{
var client = new SignalRClient(url);
await client.Start();
return client;
}