[RadListView] Cannot read property 'setBackgroundColor' of undefined

[nericode]

In RadListView

Cannot read property 'setBackgroundColor' of undefined && not update position index when delete element of list.

Please take a minute to read our [NativeScript Code of Conduct](System.err: An uncaught Exception occurred on "main" thread.

An uncaught Exception occurred on "main" thread.
Calling js method onBindViewHolder failed
TypeError: Cannot read property 'setBackgroundColor' of undefined

StackTrace: push.../node_modules/nativescript-ui-listview/ui-listview.js.RadListView._toggleSelectionColor(file:///data/data/org.nativescript.appgenericsales/files/app/vendor.js:89045:29) at ListViewAdapter.onBindViewHolder(file:///data/data/org.nativescript.appgenericsales/files/app/vendor.js:87886:19) at com.tns.Runtime.callJSMethodNative(Native Method) at com.tns.Runtime.dispatchCallJSMethodNative(Runtime.java:1209) at com.tns.Runtime.callJSMethodImpl(Runtime.java:1096) at com.tns.Runtime.callJSMethod(Runtime.java:1083) at com.tns.Runtime.callJSMethod(Runtime.java:1063) at com.tns.Runtime.callJSMethod(Runtime.java:1055) at com.tns.gen.com.telerik.widget.list.ListViewAdapter_vendor_87794_32_ListViewAdapter.onBindViewHolder(ListViewAdapter_vendor_87794_32_ListViewAdapter.java:49) at com.telerik.widget.list.ListViewWrapperAdapter.onBindViewHolder(ListViewWrapperAdapter.java:266) at com.telerik.widget.list.ListViewWrapperAdapter.onBindViewHolder(ListViewWrapperAdapter.java:20) at androidx.recyclerview.widget.RecyclerView$Adapter.onBindViewHolder(RecyclerView.java:6944) at androidx.recyclerview.widget.RecyclerView$Adapter.bindViewHolder(RecyclerView.java:6986) at androidx.recyclerview.widget.RecyclerView$Recycler.tryBindViewHolderByDeadline(RecyclerView.java:5903) at androidx.recyclerview.widget.RecyclerView$Recycler.tryGetViewHolderForPositionByDeadline(RecyclerView.java:6170) at androidx.recyclerview.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:6009) at androidx.recyclerview.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:6005) at androidx.recyclerview.widget.LinearLayoutManager$LayoutState.next(LinearLayoutManager.java:2302) at androidx.recyclerview.widget.GridLayoutManager.layoutChunk(GridLayoutManager.java:563) at androidx.recyclerview.widget.LinearLayoutManager.fill(LinearLayoutManager.java:1587) at androidx.recyclerview.widget.LinearLayoutManager.onLayoutChildren(LinearLayoutManager.java:665) at androidx.recyclerview.widget.GridLayoutManager.onLayoutChildren(GridLayoutManager.java:172) at androidx.recyclerview.widget.RecyclerView.dispatchLayoutStep2(RecyclerView.java:4040) at androidx.recyclerview.widget.RecyclerView.dispatchLayout(RecyclerView.java:3757) at androidx.recyclerview.widget.RecyclerView.onLayout(RecyclerView.java:4310) at com.telerik.widget.list.RadListView.onLayout(RadListView.java:600) at android.view.View.layout(View.java:19659) at android.view.ViewGroup.layout(ViewGroup.java:6075) at android.widget.FrameLayout.layoutChildren(FrameLayout.java:323) at android.widget.FrameLayout.onLayout(FrameLayout.java:261) at android.view.View.layout(View.java:19659) at android.view.ViewGroup.layout(ViewGroup.java:6075) at org.nativescript.widgets.CommonLayoutParams.layoutChild(CommonLayoutParams.java:222) at org.nativescript.widgets.GridLayout.onLayout(GridLayout.java:354) at android.view.View.layout(View.java:19659) at android.view.ViewGroup.layout(ViewGroup.java:6075) at android.widget.FrameLayout.layoutChildren(FrameLayout.java:323) at android.widget.FrameLayout.onLayout(FrameLayout.java:261) at android.view.View.layout(View.java:19659) at android.view.ViewGroup.layout(ViewGroup.java:6075) at android.widget.FrameLayout.layoutChildren(FrameLayout.java:323) at android.widget.FrameLayout.onLayout(FrameLayout.java:261) at android.view.View.layout(View.java:19659) at android.view.ViewGroup.layout(ViewGroup.java:6075) at org.nativescript.widgets.CommonLayoutParams.layoutChild(CommonLayoutParams.java:222) at org.nativescript.widgets.GridLayout.onLayout(GridLayout.java:354) at android.view.View.layout(View.java:19659) at android.view.ViewGroup.layout(ViewGroup.java:6075) at org.nativescript.widgets.CommonLayoutParams.layoutChild(CommonLayoutParams.java:222) at org.nativescript.widgets.ContentLayout.onLayout(ContentLayout.java:73) at android.view.View.layout(View.java:19659) at android.view.ViewGroup.layout(ViewGroup.java:6075) at android.widget.FrameLayout.layoutChildren(FrameLayout.java:323) at android.widget.FrameLayout.onLayout(FrameLayout.java:261) at android.view.View.layout(View.java:19659) at android.view.ViewGroup.layout(ViewGroup.java:6075) at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1791) at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1635) at android.widget.LinearLayout.onLayout(LinearLayout.java:1544) at android.view.View.layout(View.java:19659) at android.view.ViewGroup.layout(ViewGroup.java:6075) at android.widget.FrameLayout.layoutChildren(FrameLayout.java:323) at android.widget.FrameLayout.onLayout(FrameLayout.java:261) at android.view.View.layout(View.java:19659) at android.view.ViewGroup.layout(ViewGroup.java:6075) at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1791) at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1635) at android.widget.LinearLayout.onLayout(LinearLayout.java:1544) at android.view.View.layout(View.java:19659) at android.view.ViewGroup.layout(ViewGroup.java:6075) at android.widget.FrameLayout.layoutChildren(FrameLayout.java:323) at android.widget.FrameLayout.onLayout(FrameLayout.java:261) at com.android.internal.policy.DecorView.onLayout(DecorView.java:761) at android.view.View.layout(View.java:19659) at android.view.ViewGroup.layout(ViewGroup.java:6075) at android.view.ViewRootImpl.performLayout(ViewRootImpl.java:2496) at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:2212) at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1392) at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:6752) at android.view.Choreographer$CallbackRecord.run(Choreographer.java:911) at android.view.Choreographer.doCallbacks(Choreographer.java:723) at android.view.Choreographer.doFrame(Choreographer.java:658) at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:897) at android.os.Handler.handleCallback(Handler.java:790) at android.os.Handler.dispatchMessage(Handler.java:99) at android.os.Looper.loop(Looper.java:164) at android.app.ActivityThread.main(ActivityThread.java:6494) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:438) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:807)

### Which platform(s) does your issue occur on?
Android

This issue is in an emulator with next characteristics :
* API 27
* Size on Disk: 3.9 GB
* CPU x86
* Nexus S

### Please provide the following version numbers that your issue occurs with:

{ "nativescript": { "id": "org.nativescript.appgenericsales", "tns-android": { "version": "6.1.1" }, "tns-ios": { "version": "6.1.0" } }, "dependencies": { "@angular/animations": "~8.2.0", "@angular/common": "~8.2.0", "@angular/compiler": "~8.2.0", "@angular/core": "~8.2.0", "@angular/forms": "~8.2.0", "@angular/platform-browser": "~8.2.0", "@angular/platform-browser-dynamic": "~8.2.0", "@angular/router": "~8.2.0", "json-object-mapper": "^1.6.0", "nativescript-angular": "~8.2.0", "nativescript-image": "^2.2.5", "nativescript-localstorage": "^1.1.5", "nativescript-material-cardview": "^2.5.0", "nativescript-material-ripple": "^2.5.0", "nativescript-theme-core": "^2.0.20", "nativescript-ui-listview": "^7.1.0", "nativescript-ui-sidedrawer": "^7.0.2", "reflect-metadata": "~0.1.12", "rxjs": "^6.4.0", "tns-core-modules": "~6.1.0", "zone.js": "~0.9.1" }, "devDependencies": { "@angular/compiler-cli": "~8.2.0", "@ngtools/webpack": "~8.2.0", "nativescript-dev-webpack": "~1.2.0", "node-sass": "4.12.0", "typescript": "~3.5.3" }, "gitHead": "e9af7b54b243e55ef28e4610c4ef8c83837d86c0", "readme": "NativeScript Application" }

### Project for test

[Archivo.zip](https://github.com/NativeScript/nativescript-ui-feedback/files/3741895/Archivo.zip)

### Enverionment
✔ Your ANDROID_HOME environment variable is set and points to correct directory.
✔ Your adb from the Android SDK is correctly installed.
✔ The Android SDK is installed.
✔ A compatible Android SDK for compilation is found.
✔ Javac is installed and is configured properly.
✔ The Java Development Kit (JDK) is installed and is configured properly.
✔ Xcode is installed and is configured properly.
✔ xcodeproj is installed and is configured properly.
✔ CocoaPods are installed.
✔ CocoaPods update is not required.
✔ CocoaPods are configured properly.
✔ Your current CocoaPods version is newer than 1.0.0.
✔ Python installed and configured correctly.
✔ The Python 'six' package is found.
✔ Xcode version 11.0.0 satisfies minimum required version 10.
✔ Getting NativeScript components versions information...
✔ Component nativescript has 6.1.2 version and is up to date.

[tsonevn]

HI @NeriCodec, Thank you for the provided sample project. I was able to recreate the issue for Android. I will log it as a bug and we will investigate it further. To workaround the issue, you can nest ns-item-product custom component in one of the available Layouts in products.component.html. For example:

 <ng-template tkListItemTemplate let-item="item">
                <StackLayout>
                    <ns-item-product [product]="item"></ns-item-product>
                </StackLayout>
            </ng-template>

[nericode]

@tsonevn Hello, thanks for answer, now work my app 👍

[zbranzov]

The fix is released in nativescript-ui-listview@8.0.0