Xamarin.UITest：如何判断Xamarin.Forms.ListView是否刷新？

Question

在 Xamarin.UITest 中，如何确定 Xamarin.Forms.ListView 是否正在刷新？

当我执行 app.Query(x => x.Class("ListViewRenderer")) 时，我只得到这些结果：

Query for Class("ListViewRenderer") gave 1 results.                             
[
   [0] {                                                                               
        Id => null,                                                                     
        Description => "md51558244f76c53b6aeda52c8a337f2c37.ListViewRenderer{b749570 V.E...... ........ 0,0-1080,1536}",                                                
        Rect => {                                                                           
            Width => 1080,                                                                  
            Height => 1536,                                                                 
            X => 0,                                                             
            Y => 240,
            CenterX => 540,
            CenterY => 1008
        },
        Label => null,
        Text => null,
        Class => "md51558244f76c53b6aeda52c8a337f2c37.ListViewRenderer",
        Enabled => true
    }
]

Answer 1

更多信息，我整理了这篇博客post：https://codetraveler.io/2019/10/03/xamarin-uitest-determine-if-xamarin-forms-listview-is-refreshing/

Android

要与来自 Xamarin.UITest 的 Android 上的 ListView 交互，您必须使用 Invoke method to access the methods in the native Java Android API。

在 Android 上，我们可以像这样检查从 SwipeRefreshLayout.isRefreshing() 返回的值：

(bool)(app.Query(x => x.Class("ListViewRenderer_SwipeRefreshLayoutWithFixedNestedScrolling").Invoke("isRefreshing")).FirstOrDefault();

iOS

对于iOS，我们可以检查UIRefreshControl是否可见：

app.Query(x => x.Class("UIRefreshControl")).Any()

代码示例

public bool GetIsRefreshIndicatorDisplayed(Xamarin.UITest.IApp app)
{
    if (app is AndroidApp)
        return (bool)(app.Query(x => x.Class("ListViewRenderer_SwipeRefreshLayoutWithFixedNestedScrolling")?.Invoke("isRefreshing"))?.FirstOrDefault() ?? false);

    if (app is iOSApp)
        return app.Query(x => x.Class("UIRefreshControl"))?.Any() ?? false;

    throw new NotSupportedException("Xamarin.UITest only supports Android and iOS");
}

示例应用程序

这是我成功实施此方法的示例应用程序：https://github.com/brminnick/UITestSampleApp/blob/master/Src/UITestSampleApp.UITests/Pages/ListPage.cs

Xamarin.UITest：如何判断Xamarin.Forms.ListView是否刷新？

Xamarin.UITest: How to Determine If Xamarin.Forms.ListView Is Refreshing?

xamarin.forms

xamarin.android

xamarin.ios

xamarin.uitest

代码示例

示例应用程序