When SlideView contains ContentViews, it does not always update SelectedIndex (or visible item) after swiping on iOS

The second item is visible, but the index does not seems updated, after the second swipe again the second item is visible, but now the index is updated and the next swipe leads to the third item.

The only way to customize the SlideView indicators is to predefine the SlideView ControlTemplate.

Available in the R1 2018 release. 

Refer to the attached reproducible,

The DataTemplateSelector should be returning RedTemplate and BlueTemplate every other item. However, the SlideView is not making calls to the selector and incidentally reuses the wrong template for multiple items in a row,

Available in minor release 2018.2.821. It will also be available in the R3 2018 release.

Switching the views is executed by setting SelectedIndex property of the SlideView.

Available in minor release 2018.3.1109. It will also be available in the R1 2019 release.

SelectedIndex does not stay in sync when removing items from ObservableCollection bound as ItemsSource.  When deleting Index 2, SelectedIndex correctly moves to 1, but Slideview moves to index 0

If IsSwipingEnabled is set to true and data is  dynamically added to SlideView control when the user swipes through the items, the content is not displayed and the control becomes non-responsive.  The same approach works properly if the user uses the slide buttons to navigate between the items.

Expose a property to set the SlideView Indicator diameter/size, just like you can already do for the SlideView buttons.

Available in minor release 2018.1.0315. It will also be available in the R2 2018 release.

When the SlideView is bound to a collection containing 1000 items it takes long time (15 seconds) to visualize the control.

Available in the R2 2018 release.

Available in the 2018 R2 SP release.

SlideView item does not update after navigation between pages

Hi!

We are using your component SlideView on Main Page of our app. Unfortunately when we upgraded Xamarin Forms to 4.0 version we are facing exception - System.NotSupportedException: Unable to activate instance of type Telerik.XamarinForms.PrimitivesRenderer.Android.SlideViewRenderer from native handle 0x75 (key_handle 0x60775bd). ---> System.MissingMethodException: No constructor found for Telerik.XamarinForms.PrimitivesRenderer.Android.SlideViewRenderer::.ctor(System.IntPtr, Android.Runtime.JniHandleOwnership) ---> Java.Interop.JavaLocationException: Exception of type 'Java.Interop.JavaLocationException' was thrown.

 

Steps to reproduce:

1) Open app with SlideView and BottomNavigationBar

2) Navigate to any another tab

3) Back to main page tab

4) App is crashing with this exception.

 

It could be important information to reproduce this but it doesn't happend on every tab. We have five tabs in app (Main Page and 4 additional) and it crashes only on navigation between main page and last tab.

I guess that could happend when SlideView disposes or reloads.

Add possibility to tap the indicators to change the views. it's a common reflex touching it to change pages.

I have a SlideView with IsInfiniteScrollingEnabled property bound initially to false. As expected the swipe gesture and side button are locked to navigate from first to last slide.

but if I set the property to true and then back to false, the swipe event unexpectedly allows me to swipe from first to last slide. Also, the indicator remains in the first slide position even when the slide content is obviously the last one.

If I use the side button instead of the swipe gesture the behavior is as expected.

Expose bindable SelectedItem property that can be used to bind the item currently selected to the ViewModel. Currently SelectedIndex can be used to achieve the scenario, still, SelectedItem would be a better solution.

Currently, you can successfully add button or gesture recogniser only on UWP and iOS. On Android this approach causes the SlideView stop sliding.

In a scenario where you would like to cancel the sliding to a specific index, you should use the SlidingToIndex event and cancel it. However, this action results in freezing the control.

Available in minor release 2017.3.1214. It will also be available in the R1 2018 release.

Can be used to change the selected view, by tapping on an indicator