I need to take a picture with the camera and at the same time show an overlay image on top of the camera view. After the picture is taken, i need to save what the user saw while taking the picture. Can anyone suggest me? Please.
public void onPictureTaken(byte[] data, Camera camera){
Bitmap cameraBitmap = BitmapFactory.decodeByteArray(data, 0, data.length);
wid = cameraBitmap.getWidth();
hgt = cameraBitmap.getHeight();
Bitmap newImage = Bitmap.createBitmap(wid , hgt , Bitmap.Config.ARGB_8888);
Canvas canvas = new Canvas(newImage);
canvas.drawBitmap(cameraBitmap, 0f, 0f, null);
Drawable drawable = getResources().getDrawable(R.drawable.d);
drawable.setBounds(20 ,20, 260, 160);
drawable.draw(canvas);
File storagePath = new File(Environment.getExternalStorageDirectory() + "/Vampire Photos/");
storagePath.mkdirs();
File myImage = new File(storagePath,Long.toString(System.currentTimeMillis()) + ".jpg");
try
{
FileOutputStream out = new FileOutputStream(myImage);
newImage.compress(Bitmap.CompressFormat.JPEG, 90, out);
out.flush();
out.close();
}
catch(FileNotFoundException e)
{
Log.d("In Saving File", e + "");
}
catch(IOException e)
{
Log.d("In Saving File", e + "");
}
camera.startPreview();
drawable = null;
newImage.recycle();
newImage = null;
cameraBitmap.recycle();
cameraBitmap = null;
} };
Related
FYI, I'm new to OpenCV. I'm creating an AWS Lambda function that will utilize OpenCV 2.4 to resize images that I have in S3. S3 generates an event that launches my Lambda function when an image is uploaded to my source bucket. The lambda function successfully resizes the images and stores the resized image to the target bucket with the same object key as the original image. I have test images that where taken with a digital camera and some from an Android phone. What I've noticed is if I have an image from the phone that was taken in portrait the image in the source bucket is oriented correctly but the resized version in the target bucket is orientated incorrectly. Images taken in portrait orientation are converted to landscape. How do I maintain the orientation when resizing images. Below is the code I'm using.
public Object handleRequest(S3Event input, Context context) {
OpenCV.loadLibrary();
for (S3EventNotificationRecord record : input.getRecords()) {
String bucketName = record.getS3().getBucket().getName();
S3ObjectEntity entity = record.getS3().getObject();
String objectKey = entity.getUrlDecodedKey();
context.getLogger().log("ObjectKey: " + objectKey);
String fileExtension = objectKey.substring(objectKey.lastIndexOf("."));
context.getLogger().log("file extension: " + fileExtension);
S3Object object = s3Client.getObject(new GetObjectRequest(bucketName, objectKey));
InputStream objectData = object.getObjectContent();
ObjectMetadata objectMetadata = object.getObjectMetadata();
// Process the objectData stream.
int nRead;
byte[] data = new byte[16 * 1024];
ByteArrayOutputStream buffer = new ByteArrayOutputStream();
try {
while ((nRead = objectData.read(data, 0, data.length)) != -1) {
buffer.write(data, 0, nRead);
}
byte[] bytes = buffer.toByteArray();
Mat srcImage = Highgui.imdecode(new MatOfByte(bytes), Highgui.CV_LOAD_IMAGE_UNCHANGED);
Mat resizedImage = new Mat();
Imgproc.resize(srcImage, resizedImage, new Size(0,0), 0.1, 0.1, Imgproc.INTER_AREA);
MatOfByte resizedMatOfByte = new MatOfByte();
Highgui.imencode(fileExtension, resizedImage, resizedMatOfByte);
byte[] bytesToWrite = resizedMatOfByte.toArray();
ObjectMetadata meta = new ObjectMetadata();
meta.setContentLength(bytesToWrite.length);
meta.setContentType(objectMetadata.getContentType());
PutObjectRequest putRequest = new PutObjectRequest(Configuration.MINIMIZED_ARTIFACT_BUCKET, objectKey, new ByteArrayInputStream(bytesToWrite), meta);
s3Client.putObject(putRequest);
objectData.close();
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
}
return null;
}
I am trying to create a pdf from listview items. This is my listview:
This is the result:
Below is my code:
ListView def = (ListView) findViewById(R.id.ist);
ListAdapter adapter = def.getAdapter();
int itemscount = adapter.getCount();
/*int itemsposition = adapter.getItem(position);*/
Toast.makeText(getApplicationContext(), itemscount + " temaxia", Toast.LENGTH_LONG).show();
int allitemsheight = 0;
List<Bitmap> bmps = new ArrayList<Bitmap>();
for (int i = 0; i < itemscount ; i++) {
View childView = adapter.getView(i, null, def);
/*View childView = def.getChildAt(1);*/
childView.measure(View.MeasureSpec.makeMeasureSpec(def.getWidth(),
View.MeasureSpec.EXACTLY),
View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED));
childView.layout(0, 0, childView.getMeasuredWidth(),
childView.getMeasuredHeight());
childView.setDrawingCacheEnabled(true);
childView.buildDrawingCache();
childView.getDrawingCache();
/*bmps.add(childView.getDrawingCache());
allitemsheight+=childView.getMeasuredHeight();*/
Bitmap bigbitmap = Bitmap.createBitmap(def.getMeasuredWidth(),
childView.getMeasuredHeight(), Bitmap.Config.ARGB_8888);
Canvas bigcanvas = new Canvas(bigbitmap);
def.draw(bigcanvas);
Paint paint = new Paint();
bigcanvas.drawBitmap(bigbitmap,0,childView.getMeasuredHeight(),paint);
bigbitmap.compress(Bitmap.CompressFormat.JPEG, 100, stream);
Image myImg = Image.getInstance(stream.toByteArray());
myImg.scalePercent(45, 60);
myImg.setAlignment(Image.ALIGN_CENTER);
// add image to document
doc.add(myImg);
doc.add( new Paragraph());
}
I just cant find why it only gets childview in first position despite it is inside a for loop. Can anyone help me? Thanks.
I changed all the consept to: Create a big image from all childviews and then cut it to multiple pages A4 size.See below....NOTICE that first doc is never opened and never closed,but after creating image document is opened and closed properly ...............
File file = new File(dir, flname + ".pdf");
FileOutputStream fOut = new FileOutputStream(file);
FileOutputStream fOut2 = new FileOutputStream(file);
pdfWriter.getInstance(doc, fOut);
// open the document
/* doc.open();*/
ByteArrayOutputStream stream = new ByteArrayOutputStream();
//////////////////////
ListView def = (ListView) findViewById(R.id.ist);
ListAdapter adapter = def.getAdapter();
int itemscount = adapter.getCount();
/*int itemsposition = adapter.getItem(position);*/
Toast.makeText(getApplicationContext(), itemscount + " temaxia", Toast.LENGTH_LONG).show();
View childView =null;
int allitemsheight = 0;
List<Bitmap> bmps = new ArrayList<Bitmap>();
for (int i = 0; i < itemscount ; i++) {
childView = adapter.getView(i,null,def);
/*childView = def.getChildAt(i);*/
childView.measure(View.MeasureSpec.makeMeasureSpec(def.getWidth(),
View.MeasureSpec.EXACTLY),
View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED));
childView.layout(0, 0, childView.getMeasuredWidth(),
childView.getMeasuredHeight());
childView.setDrawingCacheEnabled(true);
childView.buildDrawingCache();
/*childView.getDrawingCache();*/
bmps.add(childView.getDrawingCache());
allitemsheight+=childView.getMeasuredHeight();
}
Bitmap bigbitmap = Bitmap.createBitmap(def.getMeasuredWidth(),
allitemsheight , Bitmap.Config.ARGB_8888);
Paint paint = new Paint();
Canvas bigcanvas = new Canvas(bigbitmap);
for (int i = 0; i < bmps.size(); i++) {
Bitmap bmp = bmps.get(i);
bigcanvas.drawBitmap(bmp, 0, iHeight, paint);
/*bigcanvas.drawColor(Color.WHITE);
def.draw(bigcanvas);*/
iHeight+=bmp.getHeight();
bmp.recycle();
bmp=null;
}
bigbitmap.compress(Bitmap.CompressFormat.JPEG, 100, stream);
Image myImg = Image.getInstance(stream.toByteArray());
myImg.scalePercent(45, 60);
myImg.setAlignment(Image.ALIGN_CENTER);
/*if(myImg.getWidth() >= doc.getPageSize().getWidth() || myImg.getHeight() >= doc.getPageSize().getHeight()){
myImg.scaleToFit(doc.getPageSize());
doc.newPage();
}
myImg.setAbsolutePosition((doc.getPageSize().getWidth() - myImg.getScaledWidth()) / BaseField.BORDER_WIDTH_MEDIUM, (doc.getPageSize().getHeight() - myImg.getScaledHeight()) / BaseField.BORDER_WIDTH_MEDIUM);
doc.add(myImg);
doc.add( new Paragraph());*/
///////////////////////////////////////
/////////////////////////////////////////
/////////////////////////////////////
Document document = new Document();
PdfWriter pdfWriter2 = PdfWriter.getInstance(document, fOut2);
document.open();
PdfContentByte content = pdfWriter2.getDirectContent();
myImg.scaleAbsolute(PageSize.A4);
myImg.setAbsolutePosition(0, 0);
float width = PageSize.A4.getWidth();
float heightRatio = myImg.getHeight() * width / myImg.getWidth();
int nPages = (int) (heightRatio / PageSize.A4.getHeight());
float difference = heightRatio % PageSize.A4.getHeight();
while (nPages >= 0) {
document.newPage();
content.addImage(myImg, width, 0, 0, heightRatio, 0, -((--nPages * PageSize.A4.getHeight()) + difference));
}
document.close();
} catch (DocumentException de) {
Log.e("PDFCreator", "DocumentException:" + de);
} catch (IOException e) {
Log.e("PDFCreator", "ioException:" + e);
} finally {
/*doc.close();*/
}
I am trying to add cloud image to album cover if the cover is loaded from internet. I am trying to do this in Background Audio agent and I think I almost got it. The problem is that I have black image in tile. Few times when testing I got cover image with my cloud image in it but mostly I get black image (and sometimes black image with cloud in it).
Can anyone help me find the problem? Thanks
private void UpdateAppTile()
{
var apptile = ShellTile.ActiveTiles.First();
if (apptile != null && _playList != null && _playList.Any())
{
var track = _playList[currentTrackNumber];
var size = 360;
Uri coverUrl;
if (track.AlbumArt.OriginalString.StartsWith("http"))
{
BitmapImage img = null;
using (AutoResetEvent are = new AutoResetEvent(false))
{
string filename = Path.GetFileNameWithoutExtension(track.AlbumArt.OriginalString);
var urlToNewCover = String.Format("http://.../{0}/{1}", filename, size);
coverUrl = new Uri(urlToNewCover, UriKind.Absolute);
Deployment.Current.Dispatcher.BeginInvoke(() =>
{
img = new BitmapImage(coverUrl);
are.Set();
});
are.WaitOne();
var wbmp = CreateTileImageWithCloud(img);
SaveTileImage(wbmp, "/shared/shellcontent/test.jpg");
coverUrl = new Uri("isostore:/shared/shellcontent/test.jpg", UriKind.RelativeOrAbsolute);
}
}
else
{
var coverId = track.Tag.Split(',')[1];
var urlToNewCover = String.Format("http://.../{0}/{1}", coverId, size);
coverUrl = new Uri(urlToNewCover, UriKind.Absolute);
}
var appTileData = new FlipTileData
{
BackgroundImage = coverUrl,
WideBackgroundImage = coverUrl,
...
}
apptile.Update(appTileData);
}
}
public static BitmapImage LoadBitmap(string iFilename)
{
Uri imgUri = new Uri(iFilename, UriKind.Relative);
StreamResourceInfo imageResource = Application.GetResourceStream(imgUri);
BitmapImage image = new BitmapImage();
image.SetSource(imageResource.Stream);
return image;
}
private void SaveTileImage(WriteableBitmap wbmp, string filename)
{
using (var store = IsolatedStorageFile.GetUserStoreForApplication())
{
if (store.FileExists(filename))
store.DeleteFile(filename);
var stream = store.OpenFile(filename, FileMode.OpenOrCreate);
wbmp.SaveJpeg(stream, wbmp.PixelWidth, wbmp.PixelHeight, 100, 100);
stream.Close();
}
}
private WriteableBitmap CreateTileImageWithCloud(BitmapImage img)
{
Image image = null;
WriteableBitmap wbmp = null;
using (AutoResetEvent are = new AutoResetEvent(false))
{
Deployment.Current.Dispatcher.BeginInvoke(() =>
{
image = new Image { Source = img };
Canvas.SetLeft(image, 0);
Canvas.SetTop(image, 0);
var cloud = new BitmapImage(new Uri("Assets/Images/Other/Cloud_no.png", UriKind.Relative));
var cloudImg = new Image { Source = cloud };
Canvas.SetLeft(cloudImg, 125);
Canvas.SetTop(cloudImg, 10);
var canvas = new Canvas
{
Height = 176,
Width = 176
};
canvas.Children.Add(image);
canvas.Children.Add(cloudImg);
wbmp = new WriteableBitmap(176, 176);
wbmp.Render(canvas, null);
wbmp.Invalidate();
are.Set();
});
are.WaitOne();
}
return wbmp;
}
Edit
I found little pattern in which this is working and in which not. When application is running and I called this twice (in TrackReady and SkipNext) then I very often get cover image with cloud. When I am running just background agent (without running app) I get always black image. And often first UpdateAppTile call is just black image and second it's black image with cloud. That black color is default canvas background so I guess I have problems with delay when loading cover image from url. But I am not sure how in my case use ImageOpened event and if it help.
I think that you should call Measure and Arrange after adding elements to canvas and before rendering canvas (as with other UIElements):
canvas.Measure( new Size( Width, Height ) );
canvas.Arrange( new Rect( 0, 0, Width, Height ) );
I try to create a PDF report from a datatable. One of the columns contents image. How can I extract the image from datatable and insert into PDF table? I'm using iTextShap version 5.4.2.0. Here is the code:
public void Report(DataTable dt, string output)
{
Document doc = new Document(PageSize.LETTER, 50, 50, 80, 50);
PdfWriter PDFWriter = PdfWriter.GetInstance(doc, new FileStream(output, FileMode.Create));
PDFWriter.ViewerPreferences = PdfWriter.PageModeUseOutlines;
iTextSharp.text.Font hel8 = FontFactory.GetFont(BaseFont.HELVETICA, 8);
doc.Open();
PdfPTable table = new PdfPTable(dt.Columns.Count);
float[] widths = new float[] { 1.2f, 1.2f, 1.2f, 1.2f, 1f, 4f, 1f, 4f };
table.SetWidths(widths);
table.WidthPercentage = 100;
PdfPCell cell = new PdfPCell(new Phrase("NewCells"));
cell.Colspan = dt.Columns.Count;
foreach (DataColumn c in dt.Columns)
{
table.AddCell(new Phrase(c.ColumnName, hel8));
}
foreach (DataRow r in dt.Rows)
{
if (dt.Rows.Count > 0)
{
table.AddCell(new Phrase(r[0].ToString(), hel8));
table.AddCell(new Phrase(r[1].ToString(), hel8));
table.AddCell(new Phrase(r[2].ToString(), hel8));
table.AddCell(new Phrase(r[3].ToString(), hel8));
table.AddCell(new Phrase(r[4].ToString(), hel8));
table.AddCell(new Phrase(r[5].ToString(), hel8));
byte[] byt = (byte[])r[6];
MemoryStream ms = new MemoryStream(byt);
System.Drwaing.Image sdi = System.Drawing.Image.FromStream(ms);
Image img = Image.GetInstance(sdi); <-- this is the problem code
table.AddCell(img);
table.AddCell(new Phrase(r[7].ToString(), hel8));
}
}
doc.Add(table);
}
doc.Close();
}
Update: #nekno, all of your suggestions are worked.
But I still need to correct the casting at line:
byte[] byt = (byte[])r[6];
It gave me a casting exception from VS2008. So I added the conversion function (pulled it from stackoverflow):
byte[] ImageToByte(System.Drawing.Image img)
{
byte[] byteArray = new byte[0];
using (MemoryStream stream = new MemoryStream())
{
img.Save(stream, System.Drawing.Imaging.ImageFormat.Png);
stream.Close();
byteArray = stream.ToArray();
}
return byteArray;
}
And revised the code:
byte[] byt = ImageToByte((System.Drawing.Image)dt.Rows[e][6]);
Thanks.
What exactly is the problem? What happens when you use your problem code?
Try one of the other Image.GetInstance() overloads:
You can pass the byte array directly:
byte[] byt = (byte[])r[6];
Image img = Image.GetInstance(byt);
Or you can pass the Stream:
byte[] byt = (byte[])r[6];
MemoryStream ms = new MemoryStream(byt);
Image img = Image.GetInstance(ms);
Or you can give iTextSharp more info about the image format:
byte[] byt = (byte[])r[6];
MemoryStream ms = new MemoryStream(byt);
System.Drawing.Image sdi = System.Drawing.Image.FromStream(ms);
Image img = Image.GetInstance(sdi, ImageFormat.Png);
If your column can be cast to a System.Drawing.Image, then you can use it directly:
Image img = Image.GetInstance((System.Drawing.Image)r[6], System.Drawing.Imaging.ImageFormat.Png);
I have suggested steps how shows how to add image into PDF, given below code snippet show how to add logo into your PDF using iTextsharp, follow provided below steps:
I have provided link to download "itextsharp" component from given link http://sourceforge.net/projects/itextsharp/
You have to add reference into your application.
Next you have to add required namespaces "iTextsharp.text.html", "iTextsharp.text" to consume its best properties.
Now you have to add code snippet into your application given at the end, add code snippet under "button click" in code behind.
Hope it will work for you !!!
protected void btnPDF_Click(object sender, ImageClickEventArgs e)
{
DataTable dtn = new DataTable();
dtn = GetDataTable();
dtPDF = dtn.Copy();
for (int i = 0; i <= dtn.Rows.Count - 1; i++)
{
ExportToPdf(dtPDF);
}
}
public void ExportToPdf(DataTable myDataTable)
{
Document pdfDoc = new Document(PageSize.A4, 10, 10, 10, 10);
try
{
PdfWriter.GetInstance(pdfDoc, System.Web.HttpContext.Current.Response.OutputStream);
pdfDoc.Open();
Chunk c = new Chunk("" + System.Web.HttpContext.Current.Session["CompanyName"] + "", FontFactory.GetFont("Verdana", 11));
Paragraph p = new Paragraph();
p.Alignment = Element.ALIGN_CENTER;
p.Add(c);
pdfDoc.Add(p);
string clientLogo = Server.MapPath(".") + "/logo/tpglogo.jpg";
string imageFilePath = Server.MapPath(".") + "/logo/tpglogo.jpg";
iTextSharp.text.Image jpg = iTextSharp.text.Image.GetInstance(imageFilePath);
//Resize image depend upon your need
jpg.ScaleToFit(80f, 60f);
//Give space before image
jpg.SpacingBefore = 0f;
//Give some space after the image
jpg.SpacingAfter = 1f;
jpg.Alignment = Element.HEADER;
pdfDoc.Add(jpg);
Font font8 = FontFactory.GetFont("ARIAL", 7);
DataTable dt = myDataTable;
if (dt != null)
{
//Craete instance of the pdf table and set the number of column in that table
PdfPTable PdfTable = new PdfPTable(dt.Columns.Count);
PdfPCell PdfPCell = null;
for (int rows = 0; rows < dt.Rows.Count; rows++)
{
for (int column = 0; column < dt.Columns.Count; column++)
{
PdfPCell = new PdfPCell(new Phrase(new Chunk(dt.Rows[rows][column].ToString(), font8)));
PdfTable.AddCell(PdfPCell);
}
}
//PdfTable.SpacingBefore = 15f; // Give some space after the text or it may overlap the table
pdfDoc.Add(PdfTable); // add pdf table to the document
}
pdfDoc.Close();
Response.ContentType = "application/pdf";
Response.AddHeader("content-disposition", "attachment; filename= SampleExport.pdf");
System.Web.HttpContext.Current.Response.Write(pdfDoc);
Response.Flush();
Response.End();
//HttpContext.Current.ApplicationInstance.CompleteRequest();
}
catch (DocumentException de)
{
System.Web.HttpContext.Current.Response.Write(de.Message);
}
catch (IOException ioEx)
{
System.Web.HttpContext.Current.Response.Write(ioEx.Message);
}
catch (Exception ex)
{
System.Web.HttpContext.Current.Response.Write(ex.Message);
}
}
When I take a picture on the simulator (Haven't tried a device yet) the result is only less than half of the image and the rest is gray. Does anyone know why?
Thanks
listener = new FileSystemJournalListener()
{
private long _lastUSN;
public void fileJournalChanged()
{
long nextUSN = FileSystemJournal.getNextUSN();
FileSystemJournalEntry entry = FileSystemJournal.getEntry(nextUSN - 1);
nextUSN++;
switch (entry.getEvent()) {
case FileSystemJournalEntry.FILE_ADDED:
try
{
FileConnection fconn = (FileConnection)Connector.open("file://" +entry.getPath());
if(fconn.exists())
{
InputStream input = null;
input = fconn.openInputStream();
byte[] data = new byte[(int) fconn.fileSize() + 1000];
input.read(data);
rawImage = data;
pic = Bitmap.createBitmapFromBytes(data, 0, -1, 1);
if(input != null)
{
input.close();
}
Bitmap[] images = new Bitmap[1];
images[0] = pic;
//labels[1] = "Label for image 2";
// tooltips[1] = "Tooltip for image 2";
// labels[2] = "Label for image 2";
// tooltips[2] = "Tooltip for image 2";
ScrollEntry[] entries = new ScrollEntry[images.length];
entries[0] = new ScrollEntry(images[0], "", "");
PictureScrollField pictureScrollField = new PictureScrollField(175, 131);
pictureScrollField.setData(entries, 0);
pictureScrollField.setHighlightStyle(HighlightStyle.ILLUMINATE_WITH_SHRINK_LENS);
// pictureScrollField.setHighlightBorderColor(Color.BLUE);
pictureScrollField.setBackground(BackgroundFactory.createSolidTransparentBackground(Color.BLACK, 150));
insert(pictureScrollField, 1);
picTaken = true;
EventInjector.KeyEvent inject = new EventInjector.KeyEvent(EventInjector.KeyEvent.KEY_DOWN, Characters.ESCAPE, 0, 50);
inject.post();
inject.post();
}
break;
}
catch (Exception e)
{
// TODO Auto-generated catch block
Dialog.alert(e.toString());
}
//either a picture was taken or a picture was added to the BlackBerry device
case FileSystemJournalEntry.FILE_DELETED:
//a picture was removed from the BlackBerry device;
break;
}
input.read(data) only reads some amount of data, not all of it. If you want to read the whole file, use IOUtilities.streamToBytes(input); instead, like this:
byte[] data = IOUtilities.streamToBytes(input);
byte[] data = new byte[(int) fconn.fileSize() + 1000];
...
pic = Bitmap.createBitmapFromBytes(data, 0, -1, 1);
I think data now contains last wrong 1000 bytes, try changing to:
byte[] data = new byte[(int) fconn.fileSize()];
I faced the same problem. Just use:
synchronized(UiApplication.getEventLock()) {
//your code here
}