Method requestLayout

packages/core/ui/list-view/index.ios.ts:726–731

()

	}

	public requestLayout(): void {
		// When preparing cell or header don't call super - no need to invalidate our measure when cell/header desiredSize is changed.
		if (!this._preparingCell && !this._preparingHeader) {
			super.requestLayout();
		}
	}

	public measure(widthMeasureSpec: number, heightMeasureSpec: number): void {
		const changed: boolean = this._currentWidthMeasureSpec !== widthMeasureSpec || this._currentHeightMeasureSpec !== heightMeasureSpec;