public override async Task <bool> PrintImageFromByteArrayAsync(byte[] content, PrintJobConfiguration printJobConfiguration)
{
// based on https://github.com/bushbert/XamarinPCLPrinting/blob/master/PCLPrintExample/PCLPrintExample/PCLPrintExample.Android/Print.cs
bool result = false;
try
{
if (PrintImageFromByteArrayAsyncSupported)
{
//using (
Stream inputStream = new MemoryStream(content); //)
{
PrintServiceAndroidHelper.PrintImageFromStream(inputStream, printJobConfiguration);
result = true;
}
}
}
#pragma warning disable CA1031 // Do not catch general exception types
catch (System.Exception ex)
{
await PrintStatusReporting.ReportExceptionAsync(ex);
}
#pragma warning restore CA1031 // Do not catch general exception types
return(result);
}
public override async Task <bool> PrintWebViewAsync(
Page parentPage,
WebView webView,
IWebViewAdditionalFunctions webViewAdditionFunctions,
PrintJobConfiguration printJobConfiguration)
{
bool result = false;
try
{
if (PrintWebViewAsyncSupported &&
(webViewAdditionFunctions?.NativeControl is Android.Webkit.WebView nativeWebView))
{
PrintServiceAndroidHelper.PrintFromWebView(nativeWebView, printJobConfiguration);
result = true;
}
}
catch (Java.Lang.Exception jlex)
{
await PrintStatusReporting.ReportExceptionSilentlyAsync(jlex);
}
#pragma warning disable CA1031 // Do not catch general exception types
catch (System.Exception ex)
{
await PrintStatusReporting.ReportExceptionAsync(ex);
}
#pragma warning restore CA1031 // Do not catch general exception types
return(result);
}
public override void OnPageFinished(Android.Webkit.WebView webView, string url)
{
// TODO - investigate whether even using OnPageFinished is enough to always avoid getting a blank page output
PrintServiceAndroidHelper.PrintFromWebView(webView, _printJobConfiguration);
_printJobConfiguration = null;
_webView.Dispose();
_webView = null;
Dispose(); // is this legitimate?
}
public override async Task <bool> PrintImageFromStreamAsync(Stream inputStream, PrintJobConfiguration printJobConfiguration)
{
bool result = false;
try
{
if (PrintImageFromStreamAsyncSupported)
{
PrintServiceAndroidHelper.PrintImageFromStream(inputStream, printJobConfiguration);
result = true;
}
}
#pragma warning disable CA1031 // Do not catch general exception types
catch (System.Exception ex)
{
await PrintStatusReporting.ReportExceptionAsync(ex);
}
#pragma warning restore CA1031 // Do not catch general exception types
return(result);
}
public void Run()
{
_webView = new Android.Webkit.WebView(PrintServiceAndroidHelper.ActivityInstance);
_webView.LoadUrl(_url);
PrintServiceAndroidHelper.PrintFromWebView(_webView, _printJobConfiguration);
}
