Method refresh

packages/core/ui/list-view/index.ios.ts:670–690

()

	}

	public refresh() {
		// clear bindingContext when it is not observable because otherwise bindings to items won't reevaluate
		this._map.forEach((view, nativeView, map) => {
			if (!(view.bindingContext instanceof Observable)) {
				view.bindingContext = null;
			}
		});
		this._headerMap.forEach((view, nativeView, map) => {
			if (!(view.bindingContext instanceof Observable)) {
				view.bindingContext = null;
			}
		});

		if (this.isLoaded) {
			this.nativeViewProtected.reloadData();
			this.requestLayout();
			this._isDataDirty = false;
		} else {
			this._isDataDirty = true;
		}
	}

	public isItemAtIndexVisible(itemIndex: number): boolean {
		const indexes: NSIndexPath[] = Array.from(this.nativeViewProtected.indexPathsForVisibleRows);