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fix(android): ListView now honors margin on layout containers

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Nathan Walker
2025-11-04 20:29:46 -08:00
parent 248ff4bcae
commit 24652921cf
1 changed files with 22 additions and 4 deletions
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26
packages/core/ui/list-view/index.android.ts
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@@ -1,6 +1,7 @@
import { ItemEventData, ItemsSource } from '.';
import { ListViewBase, separatorColorProperty, itemTemplatesProperty } from './list-view-common';
import { View, KeyedTemplate } from '../core/view';
import { PercentLength } from '../styling/length-shared';
import { unsetValue } from '../core/properties/property-shared';
import { CoreTypes } from '../../core-types';
import { Color } from '../../color';
@@ -404,11 +405,28 @@ function ensureListViewAdapterClass() {
this.owner._prepareItem(args.view, index);
if (!args.view.parent) {
// Proxy containers should not get treated as layouts.
// Wrap them in a real layout as well.
// Ensure margins defined on the template root are honored on Android ListView.
// ListView's children don't support layout margins, so we insert an outer wrapper
// and keep the original view (with its margins) inside. This mirrors iOS spacing.
const mt = PercentLength.toDevicePixels(args.view.marginTop, 0, Number.NaN);
const mb = PercentLength.toDevicePixels(args.view.marginBottom, 0, Number.NaN);
const ml = PercentLength.toDevicePixels(args.view.marginLeft, 0, Number.NaN);
const mr = PercentLength.toDevicePixels(args.view.marginRight, 0, Number.NaN);
const hasMargins = mt > 0 || mb > 0 || ml > 0 || mr > 0;
// If the view is already a LayoutBase (typical for templates like GridLayout),
// we wrap it so its margins take effect. For non-layout roots (labels, etc.)
// we already wrap below with a StackLayout.
if (args.view instanceof LayoutBase && !(args.view instanceof ProxyViewContainer)) {
this.owner._addView(args.view);
convertView = args.view.nativeViewProtected;
if (hasMargins) {
const outer = new StackLayout();
outer.addChild(args.view);
this.owner._addView(outer);
convertView = outer.nativeViewProtected;
} else {
this.owner._addView(args.view);
convertView = args.view.nativeViewProtected;
}
} else {
const sp = new StackLayout();
sp.addChild(args.view);