I have tried to read IMB barcode from an image with the below code snippet, but it always return null. I have also tried with the IMB barcode images in the blackbox testing below, but doesn't work.
https://github.com/micjahn/ZXing.Net/tree/master/Source/test/data/blackbox/imb-1
private static void Decode()
{
Bitmap bitmap = new Bitmap(#"\07.png");
try
{
MemoryStream memoryStream = new MemoryStream();
bitmap.Save(memoryStream, ImageFormat.Bmp);
byte[] byteArray = memoryStream.GetBuffer();
ZXing.LuminanceSource source = new RGBLuminanceSource(byteArray, bitmap.Width, bitmap.Height);
var binarizer = new HybridBinarizer(source);
var binBitmap = new BinaryBitmap(binarizer);
IMBReader imbReader = new IMBReader();
Result str = imbReader.decode(binBitmap);
}
catch { }
}
I have solved this problem by using the below code snippet shared through the below link.
https://github.com/micjahn/ZXing.Net/issues/59
private static void Decode2()
{
var bitmap = new Bitmap(#"\07.png"); // make sure that the file exists at the root level
try
{
var imbReader = new BarcodeReader
{
Options =
{
PossibleFormats = new List<BarcodeFormat> {BarcodeFormat.IMB}
}
};
var result = imbReader.Decode(bitmap);
if (result != null)
System.Console.WriteLine(result.Text);
else
System.Console.WriteLine("nothing found");
}
catch (System.Exception exc)
{
System.Console.WriteLine(exc.ToString());
}
}
Related
I am developing a Windows Phone app in which I have to post a photo to facebook. And that particular photo is choosen by using PhotoChooserTask or CameraChooserTask.
Normally, I can post a particular photo successfully, but I am facing problem to post the selected photo. I saw some link like
link
So please if anyone know about the issue please help me out.
Thanx in advance.
EDIT
private void PostClicked(object sender, RoutedEventArgs e)
{
//Client Parameters
var parameters = new Dictionary<string, object>();
//var parameters1 = new Dictionary<>();
parameters["client_id"] = FBApi;
parameters["redirect_uri"] = "https://www.facebook.com/connect/login_success.html";
parameters["response_type"] = "token";
parameters["display"] = "touch";
parameters["ContentType"] = "image/png";
//The scope is what give us the access to the users data, in this case
//we just want to publish on his wall
parameters["scope"] = "publish_stream";
Browser.Visibility = System.Windows.Visibility.Visible;
Browser.Navigate(client.GetLoginUrl(parameters));
}
private void BrowserNavitaged(object sender, System.Windows.Navigation.NavigationEventArgs e)
{
FacebookOAuthResult oauthResult;
//Making sure that the url actually has the access token
if (!client.TryParseOAuthCallbackUrl(e.Uri, out oauthResult))
{
return;
}
//Checking that the user successfully accepted our app, otherwise just show the error
if (oauthResult.IsSuccess)
{
//Process result
client.AccessToken = oauthResult.AccessToken;
//Hide the browser
Browser.Visibility = System.Windows.Visibility.Collapsed;
PostToWall();
}
else
{
//Process Error
MessageBox.Show(oauthResult.ErrorDescription);
Browser.Visibility = System.Windows.Visibility.Collapsed;
}
}
private void PostToWall()
{
string imageName = "ic_launcher.png";
StreamResourceInfo sri = null;
Uri jpegUri = new Uri(imageName, UriKind.Relative);
sri = Application.GetResourceStream(jpegUri);
try
{
byte[] imageData = new byte[sri.Stream.Length];
sri.Stream.Read(imageData, 0, System.Convert.ToInt32(sri.Stream.Length));
FacebookMediaObject fbUpload = new FacebookMediaObject
{
FileName = imageName,
ContentType = "image/jpg"
};
fbUpload.SetValue(imageData);
string name1 = eventname.Text;
string format = "yyyy-MM-dd";
string message1 = eventmessage.Text;
string date1 = datepicker.ValueString;
DateTime datevalue = DateTime.Parse(date1);
string d = datevalue.ToString(format);
string memoType = "Tribute";
var parameters = new Dictionary<string, object>();
var parameters1 = new Dictionary<string, object>();
parameters["message"] = name1 + "\n" + d + "\n" + memoType + "\n" + message1;
parameters["source"] = fbUpload;
webservice();
client.PostTaskAsync("me/photos", parameters);
}
catch (Exception error)
{
MessageBox.Show(error.ToString());
}
//client.PostTaskAsync("me/photos", parameters1);
}
On clicking on a button I am calling PostClicked class and it will directly go to facebook mainpage and it will ask for login information. Like this I am doing.
Please check it out
Now I can share a photo to facebook successfully by using photochoosertask or cameratask.
I am sharing my experience so that if anyone face the same issue can use it.
private void photoChooserTask_Completed(object sender, PhotoResult e)
{
BitmapImage image = new BitmapImage();
image.SetSource(e.ChosenPhoto);
SaveImageToIsolatedStorage(image, tempJPEG);
this.image.Source = image;
}
public void SaveImageToIsolatedStorage(BitmapImage image, string fileName)
{
using (var isolatedStorage = IsolatedStorageFile.GetUserStoreForApplication())
{
if (isolatedStorage.FileExists(fileName))
isolatedStorage.DeleteFile(fileName);
var fileStream = isolatedStorage.CreateFile(fileName);
if (image != null)
{
var wb = new WriteableBitmap(image);
wb.SaveJpeg(fileStream, wb.PixelWidth, wb.PixelHeight, 0, 100);
}
fileStream.Close();
}
}
With this you can able to save the selected image to IsolatedStorage.
And then at the time of posting the photo to facebook you have to select the image from IsolatedStorage.
private void PostClicked(object sender, RoutedEventArgs e)
{
//Client Parameters
var parameters = new Dictionary<string, object>();
parameters["client_id"] = FBApi;
parameters["redirect_uri"] = "https://www.facebook.com/connect/login_success.html";
parameters["response_type"] = "token";
parameters["display"] = "touch";
//The scope is what give us the access to the users data, in this case
//we just want to publish on his wall
parameters["scope"] = "publish_stream";
Browser.Visibility = System.Windows.Visibility.Visible;
Browser.Navigate(client.GetLoginUrl(parameters));
}
private void BrowserNavitaged(object sender, System.Windows.Navigation.NavigationEventArgs e)
{
FacebookOAuthResult oauthResult;
//Making sure that the url actually has the access token
if (!client.TryParseOAuthCallbackUrl(e.Uri, out oauthResult))
{
return;
}
//Checking that the user successfully accepted our app, otherwise just show the error
if (oauthResult.IsSuccess)
{
//Process result
client.AccessToken = oauthResult.AccessToken;
//Hide the browser
Browser.Visibility = System.Windows.Visibility.Collapsed;
PostToWall();
}
else
{
//Process Error
MessageBox.Show(oauthResult.ErrorDescription);
Browser.Visibility = System.Windows.Visibility.Collapsed;
}
}
private void PostToWall()
{
try
{
byte[] data;
using (IsolatedStorageFile myIsolatedStorage = IsolatedStorageFile.GetUserStoreForApplication())
{
using (IsolatedStorageFileStream fileStream = myIsolatedStorage.OpenFile(tempJPEG, FileMode.Open, FileAccess.Read))
{
data = new byte[fileStream.Length];
fileStream.Read(data, 0, data.Length);
fileStream.Close();
}
}
//MemoryStream ms = new MemoryStream(data);
//BitmapImage bi = new BitmapImage();
//// Set bitmap source to memory stream
//bi.SetSource(ms);
//this.imageTribute.Source = bi;
FacebookMediaObject fbUpload = new FacebookMediaObject
{
FileName = tempJPEG,
ContentType = "image/jpg"
};
fbUpload.SetValue(data);
string name1 = eventname.Text;
string format = "yyyy-MM-dd";
string message1 = eventmessage.Text;
string date1 = datepicker.ValueString;
DateTime datevalue = DateTime.Parse(date1);
string d = datevalue.ToString(format);
string memoType = "Notice";
var parameters = new Dictionary<string, object>();
var parameters1 = new Dictionary<string, object>();
parameters["message"] = name1;
parameters["source"] = fbUpload;
webservice();
client.PostTaskAsync("me/photos", parameters);
}
catch (Exception error)
{
MessageBox.Show(error.ToString());
}
}
Thanx to all....
you can do that by two methods :
1) by using mediasharetask in which it will show u all sharing account to which your phone is synced like facebook,gmail,linkdin,twitter,etc : it can be used like like this.
ShareMediaTask shareMediaTask = new ShareMediaTask();
shareMediaTask.FilePath = path;
shareMediaTask.Show();
2) by using facebook sdk. you can get the package from nuget manager and then u can use it to share on facebook.
I hope this might help u.
Using image handler to convert relative path to absolute.
protected byte[] ConvertHTMLToPDF(string HTMLCode)
{
if (Request.Url == null)
throw new Exception();
var doc = new Document(PageSize.A4);
doc.Open();
var interfaceProps = new Hashtable();
var ih = new ImageHander {BaseUri = Request.Url.ToString()};
interfaceProps.Add("img_provider", ih);
foreach (IElement element in HTMLWorker.ParseToList(new StringReader(HTMLCode), null, interfaceProps))
{
doc.Add(element);
}
var _xmlr = new XmlTextReader(new StringReader(HTMLCode));
HtmlParser.Parse(doc, _xmlr);
var stream = new MemoryStream();
PdfWriter.GetInstance(doc, stream);
doc.Close();
return stream.ToArray();
}
class:
public class ImageHander : IImageProvider
{
public string BaseUri;
public Image GetImage(string src, Hashtable h, ChainedProperties cprops, IDocListener doc)
{
string imgPath;
if (src.ToLower().Contains("http://") == false)
imgPath = HttpContext.Current.Request.Url.Scheme + "://" + HttpContext.Current.Request.Url.Authority + src;
else
imgPath = src;
return Image.GetInstance(imgPath);
}
}
imgPath at the end is correct. But it's not static file, it's url of action that returns image, so I need to pass cookies when requesting image. Is it possible?
Yes, it is possible, but you're gonna have to send the request yourself and not rely on the Image.GetInstance method. For example using the HttpClient you could send cookies along with the request:
var imageUrl = new Uri(imagePath);
var cookieContainer = new CookieContainer();
using (var handler = new HttpClientHandler { CookieContainer = cookieContainer })
using (var client = new HttpClient(handler))
{
cookieContainer.Add(
new Uri(imageUrl.GetLeftPart(UriPartial.Authority)),
new Cookie("CookieName", "cookie_value")
);
var response = client.GetAsync(imageUrl).Result;
response.EnsureSuccessStatusCode();
Stream imageStream = response.Content.ReadAsStreamAsync().Result;
// You've got the Stream here, read the documentation of iTextSharp
// how to create an Image instance from a Stream:
return Image.FromStream(imageStream); // ?????
// or maybe there's a method allowing you to create an Image from byte[]
byte[] imageData = new byte[imageStream.Length];
imageStream.Read(imageData, 0, imageData.Length);
return Image.FromByteArray(imageData); // ?????
}
I'm trying to implement an app of news (feedrss) by using WP7 i've tried this solution , but it does'nt work for me , here is my code :
namespace PhoneApp1
{
public partial class MainPage : PhoneApplicationPage
{
public MainPage()
{
InitializeComponent();}
private void Go_Click(object sender, RoutedEventArgs e)
{
WebClient _client = new WebClient();
_client.DownloadStringCompleted += Feed;
Location.Text = "http://www.aufaitmaroc.com/feeds/ma-vie.xml";
_client.DownloadStringAsync(new Uri((Location.Text)));
InitializeComponent();
}
private void Feed(object Sender, DownloadStringCompletedEventArgs e)
{
XElement _xml;
try
{
if (!e.Cancelled)
{
_xml = XElement.Parse(e.Result);
List<FeedItem> l = new List<FeedItem>();
foreach (XElement value in _xml.Elements("channel").Elements("item"))
{
FeedItem _item = new FeedItem();
_item.Title = value.Element("title").Value;
_item.enclosure = value.Element("enclosure").Attribute("url").Value;
_item.Description = Regex.Replace(value.Element("description").Value,
#"<(.|\n)*?>", String.Empty);
_item.Link = value.Element("link").Value;
_item.Guid = value.Element("guid").Value;
_item.Published = DateTime.Parse(value.Element("pubDate").Value);
l.Add(_item);
HttpWebRequest reqest1 = (HttpWebRequest)WebRequest.Create(_item.enclosure);
reqest1.BeginGetResponse(DownloadImageCallback, reqest1);
Thread.Sleep(1000);
WebClient client = new WebClient();
client.OpenReadCompleted += new OpenReadCompletedEventHandler(client_OpenReadCompleted);
client.OpenReadAsync(new Uri(_item.enclosure), client);
}
listBox.ItemsSource = l;
}
}
catch
{
}
}
IsolatedStorageFile MyStore = IsolatedStorageFile.GetUserStoreForApplication();
void client_OpenReadCompleted(object sender, OpenReadCompletedEventArgs e)
{
var resInfo = new StreamResourceInfo(e.Result, null);
var reader = new StreamReader(resInfo.Stream);
byte[] contents;
using (BinaryReader bReader = new BinaryReader(reader.BaseStream))
{
contents = bReader.ReadBytes((int)reader.BaseStream.Length);
}
IsolatedStorageFileStream stream = MyStore.CreateFile("10.jpg");
stream.Write(contents, 0, contents.Length);
stream.Close();
}
void DownloadImageCallback(IAsyncResult result)
{
HttpWebRequest req1 = (HttpWebRequest)result.AsyncState;
HttpWebResponse responce = (HttpWebResponse)req1.EndGetResponse(result);
Stream s = responce.GetResponseStream();
Deployment.Current.Dispatcher.BeginInvoke(() =>
{
string directory = "Imagestest";
if (!MyStore.DirectoryExists(directory))
{
MyStore.CreateDirectory(directory);
IsolatedStorageFileStream stream = MyStore.CreateFile("10.jpg");
using (IsolatedStorageFile myIsolatedStorage = IsolatedStorageFile.GetUserStoreForApplication())
{
using (var isoFileStream = myIsolatedStorage.CreateFile(directory + "//ANALYSE_10052013095620.jpg"))
{
var bitimage = new BitmapImage();
var wb = new WriteableBitmap(bitimage);
var width = wb.PixelWidth;
var height = wb.PixelHeight;
// bitimage.SetSource = isoFileStream;
image1.Source = bitimage;
System.Windows.Media.Imaging.Extensions.SaveJpeg(wb, isoFileStream, width, height, 0, 100);
}
}
}
else
{
using (IsolatedStorageFile myIsolatedStorage = IsolatedStorageFile.GetUserStoreForApplication())
{
if (myIsolatedStorage.FileExists(directory + "//ANALYSE_10052013095620.jpg"))
{
myIsolatedStorage.DeleteFile(directory + "//ANALYSE_10052013095620.jpg");
}
using (var isoFileStream = myIsolatedStorage.CreateFile(directory + "//ANALYSE_10052013095620.jpg"))
{
var bitimage = new BitmapImage();
var wb = new WriteableBitmap(bitimage);
var width = wb.PixelWidth;
var height = wb.PixelHeight;
System.Windows.Media.Imaging.Extensions.SaveJpeg(wb, isoFileStream, width, height, 0, 100);
}
}
}
});
}
private void listBox_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
FeedItem currentFeedItem = (FeedItem)listBox.SelectedItem;
PhoneApplicationService.Current.State["FeedItem"] = currentFeedItem;
}
When i run this project , nothing's happend , it does'nt create any folder ,when i stop the internet , images doesnt display anymore.
If you need image caching in your app, I can suggest JetImageLoader library for you
Features:
Caching in memory (so it will work very fast with lists, grids, etc)
Caching is IsolatedStorageFile (to prevent reloading each time)
Fully asynchronous (no lags)
Usage via XAML Binding Converter, you do not have to change your code, just declare converter for Image
But it supports only Windows Phone 8+
I am authour of that library, so if you got any questions, please write to me here or create an issue on github
If you want to save image locally and the display image from locally, then try this sample
http://code.msdn.microsoft.com/wpapps/CSWP8ImageFromIsolatedStora-8dcf8411, on WP 8 it's works fine.
I need to download jpeg image and show it in my midlet.
But when I try to run this code, image on screen is broken.
What is wrong?
public void startApp() {
HttpConnection conn = null;
InputStream is = null;
try {
conn = (HttpConnection) Connector.open("http://av.li.ru/227/2374227_8677578.jpg", Connector.READ, false);
conn.setRequestMethod( HttpConnection.GET);
int rc = conn.getResponseCode();
if (rc != HttpConnection.HTTP_OK) {
throw new Exception("ResponseCode = " + rc);
}
is = conn.openDataInputStream();
byte []b = new byte[(int) conn.getLength()];
is.read(b);
Image img = Image.createImage(b, 0, b.length);
Form f = new Form("test");
f.append(img);
Display.getDisplay(this).setCurrent(f);
} catch (Exception e) {
}
}
Thanks
i have created some files in the IO
in the "car" files, i would like to put some other reference like model, color etc...
so my question is : is it possible to have a multi-lining files in the IO
if yes how can i get them in the streamreader
// i want to storage many parameters in a file and find them again with the streamreader
protected override void OnNavigatedTo(System.Windows.Navigation.NavigationEventArgs e)
{
//reception des parametres de la listbox
base.OnNavigatedTo(e);
string parameter = this.NavigationContext.QueryString["parameter"];
this.tbTitre.Text = parameter;
try
{
//Create a new StreamReader
StreamReader editionDevisReader = null;
IsolatedStorageFile probyOrange = IsolatedStorageFile.GetUserStoreForApplication();
//Read the file from the specified location.
editionDevisReader = new StreamReader(new IsolatedStorageFileStream("devis\\"+parameter+".txt", FileMode.Open, probyOrange));
//Read the contents of the file .
string textFile = editionDevisReader.ReadLine();
//Write the contents of the file to the TextBlock on the page.
tbTitre.Text = textFile;
while (editionDevisReader != null)
{
RowDefinition rowdefinition = new RowDefinition();
TextBlock textblock = new TextBlock();
textblock.HorizontalAlignment = new System.Drawing.Size(48, 20);
}
editionDevisReader.Close();
}
catch
{
//If the file hasn't been created yet.
tbTitre.Text = "veuillez d abord creer le fichier";
}
thx a lot all
Yes, you can save anything (up to a point) in a file:
using (var store = IsolatedStorageFile.GetUserStoreForApplication())
{
using (var isfs = new IsolatedStorageFileStream("myfile.txt", FileMode.OpenOrCreate, store))
{
using (var sw = new StreamWriter(isfs))
{
sw.Write("anything really. Here it's just a string but could be a serialized object, etc.");
sw.Close();
}
}
}
You can then read the file with:
var result = string.Empty;
try
{
using (var store = IsolatedStorageFile.GetUserStoreForApplication())
{
if (!store.FileExists("myfile.txt"))
{
return result;
}
using (var isfs = new IsolatedStorageFileStream("myfile.txt", FileMode.Open, store))
{
using (var sr = new StreamReader(isfs))
{
string lineOfData;
while ((lineOfData = sr.ReadLine()) != null)
{
result += lineOfData;
}
}
}
}
}
catch (IsolatedStorageException)
{
result = string.Empty; // may have partial data/file before error
}
return result;
You can use
StreamReader.Writeline
and
StreamRead.ReadLine
to write and read blocks of text seperated by line feeds.