I am trying to capture the screen in IOS, Other than WkWebview all other view component I am able to capture by below code.WkWebview is giving a blank page as captured data. If I am using UIWebview the same code working Is there anything specific to do to take screen shot WkWebView.
Code for screen capture.
public static UIImage SnapshotView(this UIView view)
{
UIGraphics.BeginImageContextWithOptions(view.Bounds.Size, false, UIScreen.MainScreen.Scale);
view.DrawViewHierarchy(view.Bounds, true);
var image = UIGraphics.GetImageFromCurrentImageContext();
UIGraphics.EndImageContext();
return image;
}
WkWebView Configuration:
WKWebView _wkWebView = new WKWebView(ReaderView.Frame, new WKWebViewConfiguration());
_wkWebView.LoadFileUrl(tempUrl, tempUrl);
_wkWebView.ContentMode = UIViewContentMode.ScaleToFill;
_wkWebView.BackgroundColor = UIColor.Clear;
_wkWebView.Opaque = false;
_wkWebView.ScrollView.BackgroundColor = UIColor.Clear;
//_wkWebView.DrawViewHierarchy(_wkWebView.Bounds, true);
ReaderView.AddSubview(_wkWebView);
var imag = _wkWebView.SnapshotView();
I fixed the issue by replacing the WKWebView with PdfView.I am using this view for loading PDFs.
The latest code is below
pdfView = new PdfView();
pdfView.TranslatesAutoresizingMaskIntoConstraints = false;
ReaderView.AddSubview(pdfView);
pdfView.LeadingAnchor.ConstraintEqualTo(View.SafeAreaLayoutGuide.LeadingAnchor).Active = true;
pdfView.TrailingAnchor.ConstraintEqualTo(View.SafeAreaLayoutGuide.TrailingAnchor).Active = true;
pdfView.TopAnchor.ConstraintEqualTo(View.SafeAreaLayoutGuide.TopAnchor).Active = true;
pdfView.BottomAnchor.ConstraintEqualTo(View.SafeAreaLayoutGuide.BottomAnchor).Active = true;
// var path = Bundle.main.url(forResource: "test", withExtension: "pdf") else { return }
PdfDocument document;
// PdfDocument
using (urlString = new NSString(FilePath))
using (var tempUrl = NSUrl.CreateFileUrl(new string[] { urlString }))
document = new PdfDocument(tempUrl);
//if var document = PdfDocument(url: path) {
pdfView.Document = document;
Related
In my UWP app I'm using two images to test the HintOverLay property with a background image. But the tile does not show the image or or the overlay of the image. I'm using the Maps.xml example of official Notifications Visualizer. Their example works fine on my system. But the following code does not:
Question: What I may be missing and how can we make it work. I've verified that the untitled3.png and untitled4.png exist in the Assets/Apps/ folder. I'm using VS2019 - ver16.6.2 on Windows10 Pro -ver1903?
UPDATE:
Screenshot of Images junk1.png and junk2.png [size: 100x100 pixels]
Screenshot of Solution Explorer:
Code:
.....
.....
TileContent content = new TileContent()
{
Visual = new TileVisual()
{
TileMedium = new TileBinding()
{
Content = new TileBindingContentAdaptive()
{
BackgroundImage = new TileBackgroundImage()
{
Source = "Assets/Apps/junk1.png"
},
PeekImage = new TilePeekImage()
{
Source = "Assets/Apps/junk2.jpg",
HintOverlay = 20
}
}
},
TileWide = new TileBinding()
{
Content = new TileBindingContentAdaptive()
{
BackgroundImage = new TileBackgroundImage()
{
Source = "Assets/Apps/junk1.png"
},
PeekImage = new TilePeekImage()
{
Source = "Assets/Apps/junk2.png",
HintOverlay = 20
}
}
}
}
};
// Create the tile notification
TileNotification notification = new TileNotification(content.GetXml());
TileUpdateManager.CreateTileUpdaterForApplication().EnableNotificationQueue(true);
// Send the notification to the primary tile
TileUpdateManager.CreateTileUpdaterForApplication().Update(notification);
I created a service used in my xamarin.forms project to generate a gif from four downloaded frame. The android side is working good, but I got a problem in iOs side, where gif is created but it's too fast, regardless of the set delay value. This is my class:
public class GifService : IGifService
{
public string CreateGif(string frame1Path, string frame2Path, string frame3Path, string frame4Path,string webId,string path="")
{
List<UIImage> listOfFrame = new List<UIImage>();
UIImage image1 = new UIImage(frame1Path);
listOfFrame.Add(image1);
UIImage image2 = new UIImage(frame2Path);
listOfFrame.Add(image2);
UIImage image3 = new UIImage(frame3Path);
listOfFrame.Add(image3);
UIImage image4 = new UIImage(frame4Path);
listOfFrame.Add(image4);
NSMutableDictionary fileProperties = new NSMutableDictionary();
fileProperties.Add(CGImageProperties.GIFLoopCount, new NSNumber(0));
NSMutableDictionary frameProperties = new NSMutableDictionary();
frameProperties.Add(CGImageProperties.GIFDelayTime, new NSNumber(5f));
NSUrl documentsDirectoryUrl = NSFileManager.DefaultManager.GetUrl(NSSearchPathDirectory.DocumentDirectory, NSSearchPathDomain.User,null, true,out _);
NSUrl fileUrl = documentsDirectoryUrl.Append(webId + ".gif",false);
var destination = CGImageDestination.Create(fileUrl, MobileCoreServices.UTType.GIF, 4);
destination.SetProperties(fileProperties);
foreach(var frame in listOfFrame)
{
var cgImage = frame.CGImage;
if(cgImage!= null)
{
destination.AddImage(cgImage, frameProperties);
}
}
if (!destination.Close())
{
Console.WriteLine("Failed to finalize the image destination");
}
return fileUrl.Path;
}
}
I think that the problem is CGImageProperties.GIFDelayTime that is ignored, but i don't know why. How can I resolve this problem?
After some tries, I found finally a solution to generate a gif with a desired delay. I don't know why, but in the way i showed in my question, the options are ignored.
Here a working solution:
public class GifService : IGifService
{
public string CreateGif(string frame1Path, string frame2Path, string frame3Path, string frame4Path,string webId,string path="")
{
List<UIImage> listOfFrame = new List<UIImage>();
UIImage image1 = new UIImage(frame1Path);
listOfFrame.Add(image1);
UIImage image2 = new UIImage(frame2Path);
listOfFrame.Add(image2);
UIImage image3 = new UIImage(frame3Path);
listOfFrame.Add(image3);
UIImage image4 = new UIImage(frame4Path);
listOfFrame.Add(image4);
NSMutableDictionary fileProperties = new NSMutableDictionary
{
{ CGImageProperties.GIFLoopCount, new NSNumber(1) }
};
NSUrl documentsDirectoryUrl = NSFileManager.DefaultManager.GetUrl(NSSearchPathDirectory.DocumentDirectory, NSSearchPathDomain.User,null, true,out _);
NSUrl fileUrl = documentsDirectoryUrl.Append(webId + ".gif",false);
var destination = CGImageDestination.Create(fileUrl, MobileCoreServices.UTType.GIF, 4);
destination.SetProperties(fileProperties);
foreach (var frame in listOfFrame)
{
//difference is here, i create a var option and i set the
//GifDictionary
var options = new CGImageDestinationOptions();
options.GifDictionary = new NSMutableDictionary();
options.GifDictionary[CGImageProperties.GIFDelayTime] = new NSNumber(1f);
var cgImage = frame.CGImage;
if(cgImage!= null)
{
destination.AddImage(cgImage, options);
}
}
if (!destination.Close())
{
Console.WriteLine("Failed to finalize the image destination");
}
return fileUrl.Path;
}
}
I have an app that plays a youtube video when a proper link is given. Problem is, the app uses what is probably a native player that overrides the youtube one. Here is my current code:
if (newsVideo != "" && isConnected == true)
{
myWebView = FindViewById<WebView>(Resource.Id.NewsVideo);
int intDisplayHeight;
var screenwidth = metrics.WidthPixels;
intDisplayHeight = screenwidth / 2;
string convertednewsVideo = newsVideo.Replace("=\"\\", "=\\");
List<string> newsVideoLink = VideoParseHTML.ReturnVideoUrl(convertednewsVideo);
foreach (string item in newsVideoLink)
{
string strUrl = item.Substring(1, item.Length - 2);
string html = #"<html><body><iframe src=""strUrl"" width=""100%"" height=""videoHeight"" frameborder=""0"" ></iframe></body></html>";
var settings = myWebView.Settings;
settings.JavaScriptEnabled = true;
settings.UseWideViewPort = true;
settings.LoadWithOverviewMode = true;
settings.JavaScriptCanOpenWindowsAutomatically = true;
settings.DomStorageEnabled = true;
settings.SetRenderPriority(WebSettings.RenderPriority.High);
settings.BuiltInZoomControls = false;
settings.AllowFileAccess = true;
settings.SetPluginState(WebSettings.PluginState.On);
myWebView.SetWebChromeClient(new WebChromeClient());
string strYouTubeURL = html.Replace("videoHeight", intDisplayHeight.ToString()).Replace("strUrl", strUrl);
myWebView.LoadData(strYouTubeURL, "text/html", "UTF-8");
}
}
This is what the player looks like:
What I want is either force the application to use the youtube player or if that isn't possible, to at least remove the fullscreen button from the native player, as I don't want this functionality.
Thank you
i am trying to show the barcode in asp.net page. already download the zen barcode render with sample code. i tried the sample it is working fine with me. once i try in my code barcode label is showing empty. i checked with sample code and mine i did not find any difference , only data transfer is the different. this is what i tried.
<barcode:BarcodeLabel ID="BarcodeLabel1" runat="server" BarcodeEncoding="Code39NC" LabelVerticalAlign="Bottom" Text="12345"></barcode:BarcodeLabel>
if (!IsPostBack)
{
List<string> symbologyDataSource = new List<string>(
Enum.GetNames(typeof(BarcodeSymbology)));
symbologyDataSource.Remove("Unknown");
barcodeSymbology.DataSource = symbologyDataSource;
barcodeSymbology.DataBind();
}
this is the function
BarcodeSymbology symbology = BarcodeSymbology.Unknown;
if (barcodeSymbology.SelectedIndex != 0)
{
symbology = (BarcodeSymbology)1;
}
symbology = (BarcodeSymbology)1;
string text = hidID.Value.ToString();
string scaleText = "1";
int scale;
if (!int.TryParse(scaleText, out scale))
{
if (symbology == BarcodeSymbology.CodeQr)
{
scale = 3;
}
else
{
scale = 1;
}
}
else if (scale < 1)
{
scale = 1;
}
if (!string.IsNullOrEmpty(text) && symbology != BarcodeSymbology.Unknown)
{
barcodeRender.BarcodeEncoding = symbology;
barcodeRender.Scale = 1;
barcodeRender.Text = text;
}
symbology is set as Code39NC from the dropdown. scale is 1 and text is coming from other form the value is passing as well. still the bacodelable is showing only value not the barcode picture.
Here are two code samples using ZXing to create a (QR) barcode as both an image and as a base64 encoded string. Both of these options can be used with an <img /> tag to embed the barcode in the page.
This is not an ASP.NET control. It is a library that creates barcodes from text.
// First Text to QR Code as an image
public byte[] ToQRAsGif(string content)
{
var barcodeWriter = new BarcodeWriter
{
Format = BarcodeFormat.QR_CODE,
Options = new EncodingOptions
{
Height = this._h,
Width = this._w,
Margin = 2
}
};
using (var bitmap = barcodeWriter.Write(content))
using (var stream = new MemoryStream())
{
bitmap.Save(stream, ImageFormat.Gif);
stream.Position = 0;
return stream.GetBuffer();
}
}
// From Text to QR Code as base64 string
public string ToQRAsBase64String(string content)
{
var barcodeWriter = new BarcodeWriter
{
Format = BarcodeFormat.QR_CODE,
Options = new EncodingOptions
{
Height = _h,
Width = _w,
Margin = 2
}
};
using (var bitmap = barcodeWriter.Write(content))
using (var stream = new MemoryStream())
{
bitmap.Save(stream, ImageFormat.Gif);
return String.Format("data:image/gif;base64,{0}", Convert.ToBase64String(stream.ToArray()));
}
}
Hope this helps! Happy coding.
UPDATE: Here is the link to their product page on codeplex: https://zxingnet.codeplex.com/
My Requirement: Apply fillers via c# coding(Not Design) ie, filterer salaries greater than 7000.
I have a class library and a web form in my project.
I am creating the report on class library and display report by using web form.
When I run my application it shows always the unfiltered data.
What i do to get Filtered data in Viewer.
Code:
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
Telerik.Reporting.Filter f1 = new Telerik.Reporting.Filter();
f1.Expression = "= Fields.Salary";
f1.Operator = Telerik.Reporting.FilterOperator.GreaterOrEqual;
f1.Value = "=7000";
EmpReport objEmpReport = new EmpReport(); objEmpReport.Filters.Add(f1);
TypeReportSource rptSource = new TypeReportSource(); rptSource.TypeName = typeof(EmpReport).AssemblyQualifiedName; this.ReportViewer1.ReportSource = rptSource;
}
}
working code:
// ...
using Telerik.Reporting;
using Telerik.Reporting.Processing;
// ...
void ExportToPDF(string reportToExport)
{
// all my reports are in trdx format - detect file type and use unpackage below for trdp files.
string currPath = HttpRuntime.AppDomainAppPath; // get the full path so deserialise works
reportToExport = currPath + #"Reports\" + reportToExport; // add folder and report name to path
UriReportSource uriReportSource = new UriReportSource { Uri = reportToExport }; // compressed to 1 line for brevity
Telerik.Reporting.Report myReport = DeserializeReport(uriReportSource); // extract report from xml format (trdx)
// Filters are client side (use params for server side) Here we work with the report object.
// set meaningful field name and values for your code, maybe even pass in as params to this function...
myReport.Filters.Add("UserId", FilterOperator.Equal , "1231");
var instanceReportSource = new Telerik.Reporting.InstanceReportSource(); // report source
instanceReportSource.ReportDocument = myReport; // Assigning Report object to the InstanceReportSource
// kinda optional, lots of examples just used null instead for deviceInfo
System.Collections.Hashtable deviceInfo = new System.Collections.Hashtable(); // set any deviceInfo settings if necessary
ReportProcessor reportProcessor = new ReportProcessor(); // will do work
RenderingResult result = reportProcessor.RenderReport("PDF", instanceReportSource, deviceInfo); // GO!
if (!result.HasErrors)
{
this.Response.Clear();
this.Response.ContentType = result.MimeType;
this.Response.Cache.SetCacheability(HttpCacheability.Private);
this.Response.Expires = -1;
this.Response.Buffer = true;
this.Response.BinaryWrite(result.DocumentBytes);
this.Response.End();
}
else
{
Exception[] ex = result.Errors;
throw new Exception(ex[0].Message);
}
}
Telerik.Reporting.Report DeserializeReport(UriReportSource uriReportSource)
{
var settings = new System.Xml.XmlReaderSettings();
settings.IgnoreWhitespace = true;
using (var xmlReader = System.Xml.XmlReader.Create(uriReportSource.Uri, settings))
{
var xmlSerializer = new Telerik.Reporting.XmlSerialization.ReportXmlSerializer();
var report = (Telerik.Reporting.Report)xmlSerializer.Deserialize(xmlReader);
return report;
}
}
Telerik.Reporting.Report UnpackageReport(UriReportSource uriReportSource)
{
var reportPackager = new ReportPackager();
using (var sourceStream = System.IO.File.OpenRead(uriReportSource.Uri))
{
var report = (Telerik.Reporting.Report)reportPackager.UnpackageDocument(sourceStream);
return report;
}
}