public Task PrintAsync(WebView viewToPrint, string jobName)
{
if (Build.VERSION.SdkInt >= BuildVersionCodes.Kitkat)
{
IVisualElementRenderer existingRenderer = Platform.GetRenderer(viewToPrint);
if ((existingRenderer ?? Platform.CreateRendererWithContext(viewToPrint, Settings.Context)) is IVisualElementRenderer renderer)
{
Android.Webkit.WebView droidWebView = renderer.View as Android.Webkit.WebView;
if (droidWebView == null && renderer.View is WebViewRenderer xfWebViewRenderer)
{
droidWebView = xfWebViewRenderer.Control;
}
if (droidWebView != null)
{
droidWebView.Settings.JavaScriptEnabled = true;
droidWebView.Settings.DomStorageEnabled = true;
droidWebView.SetLayerType(Android.Views.LayerType.Software, null);
// Only valid for API 19+
if (string.IsNullOrWhiteSpace(jobName))
{
jobName = Forms9Patch.ApplicationInfoService.Name;
}
var printMgr = (PrintManager)Settings.Context.GetSystemService(Context.PrintService);
printMgr.Print(jobName, droidWebView.CreatePrintDocumentAdapter(jobName), null);
}
if (existingRenderer == null)
{
renderer.Dispose();
}
}
}
return(Task.CompletedTask);
}
public Task PrintAsync(WebView viewToPrint, string jobName, FailAction failAction = FailAction.ShowAlert)
{
try
{
if (Build.VERSION.SdkInt >= BuildVersionCodes.Kitkat)
{
IVisualElementRenderer existingRenderer = Platform.GetRenderer(viewToPrint);
if ((existingRenderer ?? Platform.CreateRendererWithContext(viewToPrint, Settings.Context)) is IVisualElementRenderer renderer)
{
Android.Webkit.WebView droidWebView = renderer.View as Android.Webkit.WebView;
if (droidWebView == null && renderer.View is WebViewRenderer xfWebViewRenderer)
{
droidWebView = xfWebViewRenderer.Control;
}
if (droidWebView != null)
{
droidWebView.Settings.JavaScriptEnabled = true;
droidWebView.Settings.DomStorageEnabled = true;
droidWebView.SetLayerType(Android.Views.LayerType.Software, null);
// Only valid for API 19+
if (string.IsNullOrWhiteSpace(jobName))
{
jobName = Forms9Patch.ApplicationInfoService.Name;
}
var printMgr = (PrintManager)Settings.Context.GetSystemService(Context.PrintService);
printMgr.Print(jobName, droidWebView.CreatePrintDocumentAdapter(jobName), null);
}
if (existingRenderer == null)
{
renderer.Dispose();
}
}
}
}
catch (Exception e)
{
if (failAction == FailAction.ShowAlert)
{
Xamarin.Essentials.MainThread.BeginInvokeOnMainThread(async() =>
{
using (var toast = Forms9Patch.Alert.Create("Print Failure", e.Message))
{
await toast.WaitForPoppedAsync();
}
});
}
else if (failAction == FailAction.ThrowException)
{
throw e;
}
}
return(Task.CompletedTask);
}
async Task OnPageFinished(Android.Webkit.WebView webView, string jobName, PageSize pageSize, PageMargin margin, TaskCompletionSource <ToFileResult> taskCompletionSource)
{
if (string.IsNullOrWhiteSpace(jobName))
{
jobName = Forms9Patch.ApplicationInfoService.Name;
}
var printMgr = (PrintManager)Settings.Context.GetSystemService(Context.PrintService);
await Task.Delay(1000); // allow a bit more time for the layout to complete;
printMgr.Print(jobName, webView.CreatePrintDocumentAdapter(jobName), null);
_activityIndicatorPopup.Dispose();
_activityIndicatorPopup = null;
taskCompletionSource.SetResult(new ToFileResult(false, jobName));
webView.Dispose();
}
public override bool PrintDocumentFromWebView(object webView)
{
try {
PrintManager printManager = (PrintManager)Forms.Context.GetSystemService(Context.PrintService);
Android.Webkit.WebView platformWebView = (Android.Webkit.WebView)(webView as CustomWebView).PlatformControl;
var printAttributes = new Android.Print.PrintAttributes.Builder().Build();
printManager.Print("BodyReportJob", platformWebView.CreatePrintDocumentAdapter("BodyReportJob"), printAttributes);
return(true);
} catch (Exception) {
return(false);
}
}
public void print(string content)
{
try
{
var printManager = (Android.Print.PrintManager) this.ApplicationContext.GetSystemService(Context.PrintService);
//var browser = new WebView();
Android.Webkit.WebView s = new Android.Webkit.WebView(this.ApplicationContext);
//wv.CreatePrintDocumentAdapter()
//var htmlSource = new HtmlWebViewSource();
//htmlSource.Html = content;
// htmlSource.Html = @"<html><body>
//<h1>Xamarin.Forms</h1>
//<p>Welcome to WebView.</p>
//</body></html>";
//WebView s = new WebView(this);
s.LoadData(content, "text/html", "");
//browser.Source = htmlSource;
printManager.Print("testm", s.CreatePrintDocumentAdapter("pipi"), null);
}
catch (Exception ex)
{
}
}
