I have a Slider control inside a ScrollView (there are other elements, but those are the pertinent ones). When you "let go" of the slider (OnMouseLeftButtonUp - also works for taps), a network command is sent and the slider is momentarily greyed out. After the slider becomes available again, when I try to drag it, it will not work, and the "let go" event doesn't fire.
I have already tried setting e.Handled to True/False but it seems to do nothing. What would cause a Slider to stop working after it's used one time? -Or- Is there a better event I should be using to detect when the value changes on the slider after the user has let go of it?
Found the problem. You can't use a Toggle Switch (from the Silverlight SDK) with a slider because one takes exclusive control of a GestureListener.
Here's the fix I used, it worked perfectly (near the bottom):
http://social.msdn.microsoft.com/Forums/en-US/wpdevelop/thread/ba8bfef3-44a2-4e63-bded-97013e38772e/
You just have to wrap your sliders in a <Canvas> element and insert some event handlers.
Related
I have an NSToolbar with NSToolbarItem instances. One of the toolbar buttons is in one of two modes, depending on whether it currently operating (has been clicked) or not. I am handling this in code by changing the icon for the button to have a background rectangle when the command it represents is operational, but I can't help thinking there must be another way.
I've tried using the Selectable checkbox in XCode Interface Builder attribute inspector, and it sort of gives the result I want, except when it is selected I can't click any of the other toolbar items. I also can't see how to deselect it.
I'm a bit of a Cocoa noob so I expect the two state toggle thing is just waiting for me to find it, except so far I haven't been able to.
This seems like it would be a common thing to want to do, thing is how?
I'm facing several problems with the new function which is responsible for adjusting the view layout, when the keyboard shows up.
For example when a DatePicker is shown while a TextField is focused:
Is there a possibility to disable this function?
EDIT:
While removing the focus from the TextField before the DatePicker is shown works, there are still some others issues so I would prefer to use my own custom solution AndroidNodePositionAdjuster.
Another issue e.g. is an unpleasant white area (which will be covered by the keyboard), when the view is transitioned upwards to make room for the soft keyboard, so the transition appears very unsmooth:
So I have an ImageButton that has a texture for when it's not clicked and another one for when it is.
I'd like to make it so that under certain circumstances it becomes disabled also appear as if it's clicked (displaying its "clicked" texture).
So far button.setDisabled(true) has worked wonders but it doesn't make the button appear clicked. I searched through the whole Scene2d ImageButton doc and couldn't find a single method that could do that for me. Any ideas how can I achieve it?
Try using ImageButtonStyle to set the drawables for the various states of the button. It also includes a drawable for the disabled state, which you can set to be the same drawable that you used for the checked state.
http://libgdx.badlogicgames.com/nightlies/docs/api/com/badlogic/gdx/scenes/scene2d/ui/ImageButton.ImageButtonStyle.html
I saw here and in some articles that I should use GestureListener to get Tap from user then use SelectionChanged. I tried it and I like it. But I have problem with it. When my listbox moves (scrolls) and I try tap I get bad item (I get item from last tap). When I scroll and wait for stopping scroll and then tap everything is fine (I get exactly item which I tap on). Anyone else with this problem? Any solution? Thanks
As (according to your tags) you're targetting 7.1, there is no need to have to use a GestureListener to detect Tap events.
All UIElements in Silverlight 4 (which 7.1 is based on) support a built in Tap event. See http://msdn.microsoft.com/en-us/library/system.windows.uielement.tap(v=vs.95).aspx
Using a GestureListener has an unnecessary performance overhead and can cause other issues as you're discovering.
You should use a Tap event in the individual ListBoxItems or the SelectionChanged event on the ListBox not both.
If you create a new Databound Application, the code in the default project files will show an example of how to use SelectionChanged and in that instance trigger a page navigation.
In future, you may also get a better, faster answer by showing the code you are having problems with, not just describing it.
If you tap on the left hand side of the screen in Outlook then an event is triggered (in this case a checkbox appears).
I would like to know the xaml on how this is achieved. It cannot be a simple "MouseLeftButtonUp" event because if you drag your finger more than a few pixels then the event does not trigger.
In my own app I am trying to get an icon appear within a listbox that has a SelectionChanged event. The issue is that if you do not touch the small icon precisely then you are triggering the listbox event rather than the event I want to occur when pressing the image.
I think I need to wrap my image in a Canvas but then am still stuck as to what the event should be.
How do you increase the target size of the area where a user can click on your element?
What event should an image have when within a listbox (which is within a pivot) that has a SelectionChanged event? (MouseLeftButtonUp causes issues if you half drag to the next pivot and lift your finger - it triggers the MouseLeftButtonUp event)
I implemented something very similar to that behavior by making an itemtemplate where the checkbox was pushed offscreen to the left by using a negative margin.
I then created 2 visual states, one for Open and Closed. The open state set the margin to 0, bringing the checkbox back onscreen. Closed state had the negative margin.
With the fluidmove behavior, switching between states on button press was EASY. The only thing you'd have to add would be an invisible button/touch area on the left that would also trigger "opening" the checkbox column (changing state to reset the margins).
Hope that helps...
The outlook app is a native app, so it probably isn't using xaml at all.
If you're worried about the mouse events, then you should look at the gesture stuff in the silverlight toolkit, it contains tap, etc events that make a little more sense on the phone.
Increasing the target size and generally making stuff touchable: wrap it in a Button, then alter the ControlTemplate for the Button to remove the border.
If you look at the ControlTemplate for a Button, (Expression Blend, Edit Template, Edit a copy) you'll see the mechanics of the touch area. It's nothing more than padding/margin.
Thus, you can't bleed your touch region out without altering the layout and affecting other items around the control. I'd do two things:
First, I'd think about whether my whole control should be larger in the first place with good spacing around it. Is my design right?
Second, I'd cheat. I'd float a fixed sized button with no border over the area using the Translate transformation to move it around freely.
Good luck,
Luke