Conver bytes into UIImage

Hello all,
I get image data in bytes(0xFFD8....) from Sql Server 2005.
Now i want to convert that data into UIImage.
For that i first convert that bytes into NSData then NSData into UIImage.
But i get null in UIImage.
Thank you..

BalusC wrote:
stevoo wrote:
Basicly this is what i want to do:
Convert an image into a byte[]I would rather use an InputStream.Why ? is there any sort of difference ?
>
byte[] buffer = new byte[4096];
// response.addHeader("", "");
DataInputStream in = new DataInputStream(new FileInputStream("/home/stevoo/Desktop/Net/a.jpg"));
in.readFully(buffer);
in.close();i can do it with this, but i am not sure this is the best way.Bad code. DataInputStream is not needed here. Also if that image was larger than 4096 bytes, then your code is simply ignoring the remaining bytes.Yes it is very bad. I have changed everything. This was mostly trial.
Using ejb, creating an object and persisting the picture in the database. this is working correctly i think.Huh? You thinks? Don't do that. Be sure.
Well offcourse i think. I can put input stuff into the db but i am not sure if they are correct since i cant retrieve them to see if they were entered correctly.
and My trouble is retrieving the image.
I can retrieve them using a simple query, but how will i manage to turn then into an image again and display it?
I am working with JSP and EJB.Write a servlet which takes the image ID as parameter, gets the stream from the database (by EJB, if need be) and writes it to the outputstream of the response along the correct response headers. Then call that servlet with the image ID as parameter in a HTML <img> element in JSP.
I have already began work on the servlet. If i have more problem on this one
In the future, please post Servlet related questions in the Servlet forum.i will post a new thread in the servlet section.
Thanx :)

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georgexu316 wrote:
corlettk wrote:
georgexu316 wrote:
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Message was edited by:
Djaunl

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MergeBytesExample.vi ‏28 KB

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You can loop through and use a bitwise operator instead. Here is an example without the loop.
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Basically, I need to turn a byte[] into an int, and then from an int back into a byte[].
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Any help would be great, thanks!!!

Unfortunatly that will not work. As a previousposter
indicated, you must mask off the lower 8 bits ofeach
byte after converting to int (or the equivilentmask
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Corrected would be:
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Hi All,
what's the best way to convert a byte[] into a char[]?
Any advice appreciated. Thanks in advance.

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Byte[] into StringBuffer ?

This is what I've got:
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Either create a char[] array of the same size of the byte[] array and copy the elements:
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c[i] = (char)(b[i] & 0xFF);
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String s = new String(b, "ISO8859_1");The character encoding ISO 8859-1, will make a one to one mapping between bytes and characters.

Conver bytes into UIImage

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