共用方式為


Preventing the Pivot or Panorama controls from scrolling

The Panorama and Pivot are great, defining assets of the Windows Phone 7 user experience. Their main role is to display a wealth of information panning horizontally, and eventually enable item selection. Even though these controls are not designed to handle complex user input, you may stumble upon some scenarios where it might be necessary.

If you encounter such a scenario you will undoubtedly notice that the Panorama/Pivot will always take precedence when it comes to handling the panning manipulations. For example, placing a cursor within a TextBox will cause the hosting Panorama/Pivot to pan horizontally as the finger moves left or right to place the cursor. For the exact same reason Sliders and ToggleSwitches tend do not behave as expected.

image

I have implemented the BlocksPan.IsEnabled attached property to address this scenario. Setting it to true on a control makes any manipulation on the control block the panning of the hosting Panorama/Pivot. The usage is straightforward:

<controls:Panorama Title="MY APPLICATION" x:Name="panorama">

  <controls:PanoramaItem Header="First item">

    <TextBox pcExt:BlocksPan.IsEnabled="True" Text="This textbox blocks the panning"/>

Technically, the idea is to make the parent Panorama/Pivot invisible to hit test when a manipulation is started on a child control where this attached property is set. You can find the source code and an example attached to this post.

Note: Allowing complex user input within a Panorama or a Pivot is not a recommended UX practice on Windows Phone, furthermore expecting horizontal manipulations on controls hosted in a Panorama/Pivot results in an “ergonomic ambiguity”. This extension is only intended to target the few scenarios where creating another dedicated level of navigation does not make sense.

WP7BlocksPan.zip

Comments

  • Anonymous
    November 22, 2010
    Really great ! Thanks a lot. I've test with Bingmap control and it is really a pleasure now.

  • Anonymous
    November 24, 2010
    Great thanks. It seems not working when using the GestureListener of the phone control toolkit. If I use : <Canvas Grid.Row="2" Width="400" Height="300" Background="Yellow" local:BlocksPan.IsEnabled="True">   <toolkit:GestureService.GestureListener>      <toolkit:GestureListener Flick="GestureListener_Flick" />   </toolkit:GestureService.GestureListener> </Canvas> it never raise the GestureListener_Flick event. How can I correct this ?

  • Anonymous
    November 25, 2010
    Interesting - we had a discussion on the recommended best practices for this: stackoverflow.com/.../4275001.

  • Anonymous
    December 23, 2010
    Very Cool! Thanks.

  • Anonymous
    January 03, 2011
    This works great when the user is dragging their finger across the screen from left to right, but not the reverse.  Any suggestions to solve this?

  • Anonymous
    January 18, 2011
    I had a similar problem where it was difficult to enter text into a textbox on a pivot control. I only had a few pages, so I ended up removing the other pivot pages when the textbox received focus and adding them back when it lost focus. Example: private void txtResult_GotFocus(object sender, RoutedEventArgs e) {            //Disable ability to move to another page or use application bar            pvtRoot.Items.Remove(pvtSendTo);            pvtRoot.Items.Remove(pvtSettings);            pvtRoot.Items.Remove(pvtHistory);            ApplicationBar.IsVisible = false; } private void txtResult_LostFocus(object sender, RoutedEventArgs e) {            //Re-Enable ability to move to another page or use application bar            ApplicationBar.IsVisible = true;            if (!pvtRoot.Items.Contains(pvtSendTo)) {                pvtRoot.Items.Add(pvtSendTo);            }            if (!pvtRoot.Items.Contains(pvtSettings))            {                pvtRoot.Items.Add(pvtSettings);            }            if (!pvtRoot.Items.Contains(pvtHistory))            {                pvtRoot.Items.Add(pvtHistory);            } }

  • Anonymous
    April 18, 2011
    hmm, your example works great, when trying to implement this on my BING map control in an panorama i get the following error: "The attachable property 'IsEnabled' was not found in type 'BlocksPan'" Any clues?

  • Anonymous
    April 18, 2011
    no problem, after a rebuild it works :-) thanks man...

  • Anonymous
    November 12, 2011
    Hi this works great, and thanks for the solution.  The only problem is that this works for left and right gestures, but not for up and down.  When dragging up or down, the page scrolls.  One example is using a color picker in a pivot.  The user will naturally try to drag a point in the color picker, and the page will scroll if they drag up or down.

  • Anonymous
    March 22, 2012
    Hi, how to set the property isEnable in background(.cs File)?

  • Anonymous
    April 08, 2012
    Thank you, great work!

  • Anonymous
    December 06, 2012
    Worked on WP7, does not work on WP8.

  • Anonymous
    February 09, 2013
    Genious!

  • Anonymous
    February 25, 2013
    @alex: did you find a solution that works for WP8 ???

  • Anonymous
    September 29, 2013
    Don't work, because static FrameworkeElement property (if (property == null),  it's static - never null) - throw ArgumentExeption

  • Anonymous
    October 10, 2013
    I was able to use a ToggleSwitch into a Panorama Item just by following this advice. stackoverflow.com/.../preventing-swiping-between-pivot-elements