wifi message received event update text in xamarin forms

Question

I have an event which come from wifi message in xamarin and i want it operate a function to update the text in lable or entry to dispalay the text the problem that i recive text and can not display it

Answer 1

Hello,​

i want it operate a function to update the text in lable or entry to dispalay the text the problem that i recive text

You can use Xamarin.Forms MessagingCenter to achieve it. For example, you receive the message from the background service or other native platform(such as Android BroadCastReceiver). You can send Message by

   MessagingCenter.Send<App, string>(App.Current as App, "OneMessage", "this is recieved wifi information");  

If you have a Label in the MainPage.xaml called myLabel, when you receive the Message, you can update it like following background code.

   public MainPage()  
           {  
               InitializeComponent();  
               MessagingCenter.Subscribe<App, string>(App.Current, "OneMessage", (snd, arg) =>  
               {  
                   Device.BeginInvokeOnMainThread(() => {  
                         
                       //Update the Label‘s text, if received the Message  
                       myLabel.Text = arg;  
                   });  
               });  
           }  

Best Regards,

Leon Lu

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