未呈现Nativescript IOS 13 ui-listview组件

Question

嗨，伙计们，我对IOS13上的listview组件有问题，我试着更新到最新版本，但这不起作用

我通过修补listview.ios.js修复了它，就像评论中建议的那样，直接在node_modules中进行修补：

https://github.com/NativeScript/nativescript-ui-feedback/issues/1160#issuecomment-542039004

这是很好的工作，但有什么不同的补丁吗？

例如：

我尝试创建新文件app-platform.ios.js

并将缺失的方法直接附加到列表视图，如：

const listview = require('nativescript-ui-listview');

listview.ListViewCell.prototype.systemLayoutSizeFittingSizeWithHorizontalFittingPriorityVerticalFittingPriority = function (targetSize, horizontalFittingPriority, verticalFittingPriority) {
    if (this.view && this.view.itemView && this.view.itemView.parent) {
        var owner = this.view.itemView.parent;
        owner._preparingCell = true;
        var dimensions = owner.layoutCell(this, undefined);
        owner._preparingCell = false;
        return CGSizeMake(view_1.layout.toDeviceIndependentPixels(dimensions.measuredWidth), view_1.layout.toDeviceIndependentPixels(dimensions.measuredHeight));
    }
    return targetSize;
};

但是这会增加我的应用程序，我不能调用未定义的方法:/

Answer 1

如果有人还需要这个，可以在您的main.js路径列表视图中解决这个问题。

const application = require('application');


if (application.ios) {
    const view_1 = require("tns-core-modules/ui/core/view");
    const listView = require('nativescript-ui-listview');

    listView.ExtendedListViewCell.prototype.systemLayoutSizeFittingSizeWithHorizontalFittingPriorityVerticalFittingPriority = function (targetSize, horizontalFittingPriority, verticalFittingPriority) {
        if (this.view && this.view.itemView && this.view.itemView.parent) {
            var owner = this.view.itemView.parent;
            owner._preparingCell = true;
            var dimensions = owner.layoutCell(this, undefined);
            owner._preparingCell = false;
            return CGSizeMake(
                view_1.layout.toDeviceIndependentPixels(dimensions.measuredWidth),
                view_1.layout.toDeviceIndependentPixels(dimensions.measuredHeight)
            );
        }
        return targetSize;
    };
}