CODEWITHSUNDEEP
c#xamarinxamarin.forms
Barney Chambers
Barney Chambers

Reputation: 2783

Xamarin Forms - Check a switch has been toggled manually

I am writing a Xamarin forms application which checks whether or not a user is in a specific geo-location. When a user walks inside an area, a XAML switch is toggled from the off to on position.

farmSwitch.toggled = true;

This calls this function 

farmSwitch.Toggled += (object sender, ToggledEventArgs e) => {
            manualOnFarm = true;
            Console.WriteLine("Switch.Toggled event sent");
            changeOnFarmStatus(e);
        };

I also need functionality where a user manually clicks the switch, which need to be differentiated from when the code automatically toggles farmSwitch

The reason is that I have a boolean that should only be true when the user manually clicks farmSwitch, and should be false when the switch is toggled automatically

What are my options? Ideally there would be a farSwtich.clicked() function I could call for when a user manually clicks farmSwitch, but no such luck

Upvotes: 3

Views: 3826

Answers (2)

Bright Lee
Bright Lee

Reputation: 2326

Use @digitalsa1nt 's suggestion or, use "-=" the method before you switch it manually and use "+=" again.

Upvotes: 2

JoeTomks
JoeTomks

Reputation: 3276

I don't see how you can't just differentiate between this by using some kind of marker in the code you've written that programatically toggles the switch?

So you call this programatically but you also set a boolean marker to say this is a programatic change:

private bool HasBeenProgrammaticallyToggled = false;

public void ThisIsAProgrammaticToggle()
{
      HasBeenProgrammaticallyToggled = true;
      farmSwitch.toggled = true;
}

and in your little on toggled event just do:

farmSwitch.Toggled += (object sender, ToggledEventArgs e) => {
            if(HasBeenProgrammaticallyToggled)
            {
                 //This has been toggled programmatically, so reset our bool
                 HasBeenProgrammaticallyToggled = false;
            }
            else
            {
                 // I am assuming this is what you use to determine a manual toggle?
                 manualOnFarm = true;
            }

            Console.WriteLine("Switch.Toggled event sent");
            changeOnFarmStatus(e);
        };

Wouldn't this work?

Upvotes: 3

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