Print a web view in MAUI

Question

I have a web view where the user has an option to preview and print it on click of a button , In xamarin.forms we used Print Manager and Print Document Adapter to achieve this but the same does not seem to be working in MAUI , I checked the docs and there were no mention of the same !

Answer 1

Hello,

In MAUI, you can migrate this Forms method to MAUI by following the steps below.

Step 1. Create a MainAcceleration instance for system service.

public class MainActivity : MauiAppCompatActivity {
    public static MainActivity Instance { get; private set; }
    protected override void OnCreate(Bundle bundle)
    {
        base.OnCreate(bundle);
        Instance = this;
    }
}

Step 2. Create a static class under the Platforms\Android file to implement this method.

public static class PrintHelper
{
    public static void Print(WebView webView)
    {
        var droidViewToPrint = webView.Handler.PlatformView as Android.Webkit.WebView;
        if (droidViewToPrint != null )
        {
            var version = Android.OS.Build.VERSION.SdkInt;

            if(version >= Android.OS.BuildVersionCodes.Kitkat)
            {
                var printMgr = MainActivity.Instance.GetSystemService(Context.PrintService) as PrintManager;

                PrintDocumentAdapter printDocumentAdapter;
                string jobName = "Print";

                if(version>=Android.OS.BuildVersionCodes.Lollipop)
                {
                    printDocumentAdapter = droidViewToPrint.CreatePrintDocumentAdapter(jobName);

                }
                else
                {
                    printDocumentAdapter = droidViewToPrint.CreatePrintDocumentAdapter();
                }
                printMgr.Print("Print", printDocumentAdapter, null);
            }
        }
    }
}

Best Regards,

Alec Liu.

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