Xamarin.Forms如何在Android和iOS上添加应用评 级？

Question

哪个是在Xamarin.Forms应用程序上添加应用程序评级的最佳/最简单选项，默认星形表直接连接到Play商店或App Store？

Answer 1

在Android上，您必须打开PlayStore才能对应用进行评级，在iOS上您可以在应用内进行，但仅限iOS 10以上。

您必须实现本机方法并通过依赖服务使用它。

接口

public interface IAppRating
{
    void RateApp();
}

Android的

public class AppRatiing : IAppRating
{
    public void RateApp()
    {
        var activity = Android.App.Application.Context;
        var url = $"market://details?id={(activity as Context)?.PackageName}";

        try
        {
            activity.PackageManager.GetPackageInfo("com.android.vending", PackageInfoFlags.Activities);
            Intent intent = new Intent(Intent.ActionView, Uri.Parse(url));

            activity.StartActivity(intent);
        }
        catch (PackageManager.NameNotFoundException ex)
        {
            // this won't happen. But catching just in case the user has downloaded the app without having Google Play installed.

            Console.WriteLine(ex.Message);
        }
        catch (ActivityNotFoundException)
        {
            // if Google Play fails to load, open the App link on the browser 

            var playStoreUrl = "https://play.google.com/store/apps/details?id=com.yourapplicationpackagename"; //Add here the url of your application on the store

            var browserIntent = new Intent(Intent.ActionView, Uri.Parse(playStoreUrl));
            browserIntent.AddFlags(ActivityFlags.NewTask | ActivityFlags.ResetTaskIfNeeded);

            activity.StartActivity(browserIntent);
        }
    }
}

iOS版

public class AppRating : IAppRating
{
    public void RateApp()
    {
        if (UIDevice.CurrentDevice.CheckSystemVersion(10, 3))
            SKStoreReviewController.RequestReview();
        else
        {
            var storeUrl = "itms-apps://itunes.apple.com/app/YourAppId";
            var url = storeUrl + "?action=write-review";

            try
            {
                UIApplication.SharedApplication.OpenUrl(new NSUrl(url));
            }
            catch(Exception ex)
            {
                // Here you could show an alert to the user telling that App Store was unable to launch

                Console.WriteLine(ex.Message);
            }
        }
    }
}