// Gets called when view is pushed to the screen public override void ViewWillAppear(bool animated) { base.ViewWillAppear(animated); // declare back button var backBtn = UIButton.FromType(UIButtonType.System); backBtn.Frame = new CGRect(10, 10, 50, 10 + h); backBtn.SetTitle("Back", UIControlState.Normal); backBtn.TouchUpInside += async(sender, e) => { // Disconnect from device and switch back to previous view await BluetoothDevice.Disconnect(Peripheral, 1000); ViewController viewController = new ViewController(); PresentViewController(viewController, true, null); }; // declare red color slider UISlider redColorSlider = new UISlider { Frame = new CGRect(10, 50, View.Bounds.Width - 20, 40), MaxValue = max, MinValue = min, Continuous = true, Value = max / 2 }; // declare the green color slider UISlider greenColorSlider = new UISlider { Frame = new CGRect(10, 100, View.Bounds.Width - 20, 40), MaxValue = max, MinValue = min, Continuous = true, Value = max / 2 }; // declare the blue color slider UISlider blueColorSlider = new UISlider { Frame = new CGRect(10, 150, View.Bounds.Width - 20, 40), MaxValue = max, MinValue = min, Continuous = true, Value = max / 2 }; redColorSlider.ValueChanged += (sendaa, e) => { // When the red color slider's value changed: send the sphero the color command with the three color slider's given colors var colorCommand = new FLEDCommand((int)redColorSlider.Value, (int)greenColorSlider.Value, (int)blueColorSlider.Value, 0); this.BluetoothDevice.SendCommand(Peripheral, colorCommand); }; greenColorSlider.ValueChanged += (sendee, e) => { // When the green color slider's value changed: send the sphero the color command with the three color slider's given colors var colorCommand = new FLEDCommand((int)redColorSlider.Value, (int)greenColorSlider.Value, (int)blueColorSlider.Value, 0); this.BluetoothDevice.SendCommand(Peripheral, colorCommand); }; blueColorSlider.ValueChanged += (sendii, e) => { // When the blue color slider's value changed: send the sphero the color command with the three color slider's given colors var colorCommand = new FLEDCommand((int)redColorSlider.Value, (int)greenColorSlider.Value, (int)blueColorSlider.Value, 0); this.BluetoothDevice.SendCommand(Peripheral, colorCommand); }; // Create circle object circle = new Circle(new CGRect(10, 200, View.Bounds.Width - 20, View.Bounds.Height - 200), 5); // This is the interactive circle touchCircle = new Circle(new CGRect((circle.Frame.Width / 2) - 25, (circle.Frame.Height / 2) - 25 + 200, 50, 50), 2); touchCircle.UserInteractionEnabled = true; // Add the button to the screen. View.AddSubview(backBtn); // Add the sliders to the screen View.AddSubview(redColorSlider); View.AddSubview(greenColorSlider); View.AddSubview(blueColorSlider); // Add back circle to screen View.AddSubview(circle); // Add starting position of frontCircle to screen View.AddSubview(touchCircle); }