Xamarin Android没有这样的方法WebView.CreatePrintDocumentAdapter

using Android.App;
using Android.OS;
using Android.Webkit;
using Android.Print;
using Android.Support.V4.Print;
using Android.Support.V7.App;

namespace XamarinAndroidPrintExample
{
    [Activity(Label = "PrintExample", MainLauncher = true)]
    public class MainActivity : AppCompatActivity
    {
        private WebView webView;

        protected override void OnCreate(Bundle savedInstanceState)
        {
            base.OnCreate(savedInstanceState);
            SetContentView(Resource.Layout.activity_main);

            webView = FindViewById<WebView>(Resource.Id.webView);
            webView.Settings.JavaScriptEnabled = true;
            webView.LoadUrl("https://www.example.com");

            // 打印按钮点击事件
            var printButton = FindViewById<Button>(Resource.Id.printButton);
            printButton.Click += PrintButton_Click;
        }

        private void PrintButton_Click(object sender, EventArgs e)
        {
            // 创建打印文档适配器
            var printAdapter = webView.CreatePrintDocumentAdapterCompat("Print Example");

            // 打印选项
            var printOptions = new PrintAttributes.Builder()
                .SetMediaSize(PrintAttributes.MediaSize.IsoA4)
                .SetColorMode(PrintColorMode.Color)
                .Build();

            // 打印回调
            var printCallback = new PrintDocumentAdapter.PrintJobCompletionCallback
            {
                OnCompleted = (printJob) =>
                {
                    if (printJob.IsCompleted)
                    {
                        // 打印完成
                        Toast.MakeText(this, "打印完成", ToastLength.Short).Show();
                    }
                    else if (printJob.IsFailed)
                    {
                        // 打印失败
                        Toast.MakeText(this, "打印失败", ToastLength.Short).Show();
                    }
                }
            };

            // 创建打印任务
            var printManager = PrintManager.FromContext(this);
            printManager.Print("Print Example", printAdapter, printOptions)
                .OnComplete(printCallback);
        }
    }
}