Question

I’m developing Windows Phone 7 app. I have slider control on several page. However, when I go to a certain page within my app, all my slider controls in every page behave strangely.

The symptom is that user can only drag the thumb on slider for very short range.

The certain page I mentioned has no problem with code and XAML. Why does it cause ALL sliders to behave wrongly ?

Answer 1

The problem is that using toolkit Gesture will cause Slider to behave strangely. So when start manipulating on Slider, you should disable Gesture listener, then enable it when stop manipulating on Slider.

<Slider Height="84" Name="fixedSlider" ManipulationStarted="disableGestures" ManipulationCompleted="restoreGestures" />


GestureType prevGestureType;
private void disableGestures(object sender, ManipulationStartedEventArgs e) 
{
    prevGestureType = TouchPanel.EnabledGestures;
    TouchPanel.EnabledGestures = GestureType.None;
    fixedSlider.IsHitTestVisible = false;
}

private void restoreGestures(object sender, ManipulationCompletedEventArgs e) 
{
    TouchPanel.EnabledGestures = prevGestureType;
}