NativeScript / NativeScript/plugins
iOS Listview & InputFields
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- TypeScript
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Description
Hello everyone;
I have a nativescript angular project that has a few DateTimePickerFields inside of some ListViews that behaves unreliably on iOS (android is completely fine).
Essentially, if i have a ListView with 3 separate DateTimePickerFields, and I tap&set the DTPF at position 0, a random other DTPF will get the value.
My knowledge with Nativescript & Angular is limited; so if I'm doing something wrong or if anyone has some tips/tricks i would be greatly appreciative.
(demo of app and issue)

(inputs on item of index 0 usually work; once we touched DTPF index 2, the value goes in DTF index1 and yeah...)
(simplified code)
PMSubDetailsMooringsComponent.html
<ListView
[items]="displayItems"
[itemTemplateSelector]="selectItemTemplate"
>
<ng-template
let-item="item"
let-i="index"
>
<FlexboxLayout
flexDirection="column"
>
<Label
[text]="'index:'+ i"
></Label>
<DateTimePickerFields
[(ngModel)]="item"
(touch)="yes(i)"
></DateTimePickerFields>
</FlexboxLayout>
</ng-template>
</ListView>
PMSubDetailsMooringsComponent.ts
export class PMSubDetailsMooringsComponent extends PMBaseComponent {
displayItems: Date = {[null,null,null]}
index = -1;
yes(i) {
//just using this to display what value got touched
this.index = i;
}
}
"dependencies": {
"@angular-devkit/build-angular": "14.0.0",
"@angular/animations": "14.0.0",
"@angular/common": "14.0.0",
"@angular/compiler": "14.0.0",
"@angular/core": "14.0.0",
"@angular/forms": "14.0.0",
"@angular/platform-browser": "14.0.0",
"@angular/platform-browser-dynamic": "14.0.0",
"@angular/router": "14.0.0",
"@bezlepkin/nativescript-ar": "^1.0.4",
"@jeanbenitez/logical-expression-parser": "^1.0.0",
"@nativescript-community/drawingpad": "^4.1.0",
"@nativescript-community/ui-pulltorefresh": "^2.4.8",
"@nativescript/angular": "13.0.4",
"@nativescript/appversion": "^2.0.0",
"@nativescript/background-http": "^5.0.2",
"@nativescript/core": "8.2.5",
"@nativescript/datetimepicker": "2.1.11",
"@nativescript/fingerprint-auth": "^8.0.0",
"@nativescript/firebase": "^11.1.3",
"@nativescript/imagepicker": "^1.0.6",
"@nativescript/iqkeyboardmanager": "2.0.0",
"@nativescript/picker": "4.0.1",
"@nativescript/secure-storage": "^3.0.0",
"@nativescript/theme": "~3.0.0",
"@nstudio/nativescript-barcodescanner": "^5.0.1",
"@nstudio/nativescript-cardview": "2.0.1",
"@nstudio/nativescript-checkbox": "2.0.5",
"@nstudio/nativescript-filterable-listpicker": "^3.0.0",
"@ticnat/nativescript-searchable-select": "^1.0.7",
"crypto-browserify": "^3.12.0",
"moment": "^2.29.1",
"moment-timezone": "^0.5.34",
"nativescript-carousel": "^7.0.1",
"nativescript-localstorage": "^2.0.2",
"nativescript-mediafilepicker": "^4.0.2",
"nativescript-permissions": "1.3.11",
"nativescript-plugin-filepicker": "file:libraries/nativescript-plugin-filepicker-1.0.1.tgz",
"nativescript-ui-calendar": "^7.0.2",
"nativescript-ui-core": "5.0.1",
"nativescript-ui-gauge": "8.0.0",
"nativescript-ui-listview": "10.2.2",
"nativescript-ui-sidedrawer": "^10.0.1",
"stream-browserify": "^3.0.0",
"typescript": "4.6.4",
"zone.js": "0.11.5"
},
"devDependencies": {
"@angular/cli": "14.0.0",
"@angular/compiler-cli": "14.0.0",
"@nativescript/android": "8.0.0",
"@nativescript/ios": "8.3.0",
"@nativescript/schematics": "^11.0.0",
"@nativescript/types": "~8.1.0",
"@nativescript/webpack": "5.0.6",
"@ngtools/webpack": "14.0.0",
"@types/node": "^17.0.41",
"sass": "~1.39.0"
},
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start with PMSubDetailsMooringsComponent.html and PMSubDetailsMooringsComponent.ts, focusing on the ListView, itemTemplateSelector, and DateTimePickerFields bindings. Reproduce the behavior on iOS using the supplied three-item example, then compare the touched index with the updated value. Done means the selected field consistently receives its own value, with the behavior verified on iOS and Android.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- angular, ios, typescript
- Domain
- mobile-dev
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 25/100