Android : How To Convert Byte Array To String / Vice Versa?
Oct 8, 2009
I have to convert a byte array to string in Android, but my byte array contains negative values. If I convert that string again to byte array, values I am getting are different from original byte array values. What can I do to get proper conversion?
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Oct 5, 2010
I created a xsd and I created Java objects using Castor. Then I imported this in my Android project and tried to build an XML from the object, using the marshal method. Marshaller.marshal(v, writer); I received some wired exception trouble processing "javax/xml/parsers/DocumentBuilder.class":... So my question is Can I use Castor inside Android, If yes how can I work around this. If no, what is the neat solution available to convert object to xml and xml to object in Android, similar to Castor.
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Oct 4, 2010
I have some back end web services, SOAP web services. I would like to create an android client to use these. I'm under the impression that SOAP style web services are non trivial to setup on android, and I would prefer to use REST if possible Is there any utility that can convert REST calls to SOAP and back again? Or will I need to create my own application that listens for REST calls, makes the appropriate SOAP calls, then sends the response back as REST?
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Mar 19, 2009
I want to store image in sqlite database. I tried to store it using BLOB and String, in both cases it store the image and can retrieve it but when i convert it to Bitmap using BitmapFactory.decodeByteArray(...) it return null. Below is my code please have a look and suggest me where i m making mistake.
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Aug 12, 2010
Does anyone know how to convert a bitmap to a byte array?
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May 29, 2009
I want to store pictures from the internet in my data base as byte arrays. I get the pictures as bitmaps, but can't find way to convert it to byte array.
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Feb 16, 2009
Im trying to convert a byte array which is in Base64 format to String as below. Data was not assigned properly to the String. Do I need to pass the encoding type while creating the new String?
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Sep 1, 2009
I get a String data from Cursor, but I don't know how to convert it to Array. How can I do that?
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Sep 15, 2010
Can we use j2me packages in android development? I just mean to say like for eg: sax parser is supported in both the platforms. So can we code the business logic in j2me platform and use that class in android platforms and vice-versa?
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Nov 15, 2010
I know, that I get the same result with both code snippets
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May 5, 2014
How do I export or import mobile bookmarks from a browser (i.e. Chrome, Firefox, etc) to my PC and vice versa.
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Jan 10, 2010
wheres the option or the settings screen to choose either IMAP or POP
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Dec 16, 2009
Does Android keep the connection between the server/socket when it moves from EDGE to WIFI and vice versa?
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Jan 12, 2010
I have Picture data in byte rgb_565 array, and I want convert it in a productive way into argb array. Right now I have found only one (little slow) way to do this: Bitmap mPhotoPicture = BitmapFactory.decodeByteArray(imageData, 0 , imageData.length);
where imageData is my byte[] array in rgb_565, and then: int pixels[] = new int[CameraView.PICTURE_HEIGHT*CameraView.PICTURE_WIDTH]; mPhotoPicture.getPixels(pixels, 0,PICTURE_WIDTH, 0, 0, PICTURE_WIDTH, PICTURE_HEIGHT);
The point is I believe creating a Bitmap object is exacting and not necessary in this case. Is there any other faster way to convert rgb_565 array into argb array? I need this because making image processing on rgb_565 array seems to be a little annoying. Or maybe it is not so hard?
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Jul 14, 2010
Does anyone know how you send your photos from your Droid Eris phone TO the vzwpix.com (pixplace) or vice versa? It was pretty straightforward on my old Dare, but now the options to send there aren't as apparent.
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Feb 16, 2010
I am trying to make an application that would be able to send the user's voice over the network using RTP. I am using the ported stack from hsc (JLIBRTP) and I am able to record user's voice in a saperate thread. the problem is that jlibrtp uses has a class named RTPSession that is responsible for the session and has the sendData method that takes a byte [] as argument and the AudioFormat class I am using to record user's voice is in AudioFormat.ENCODING_PCM_16BIT wich is short. I have tried using 8bit audioformat but I get an illigalargument exception in my htc magic and in my emulator. So is there any way I can convert the short [] to byte [] ? would that be acceptable in order of voice quality?, is the above error a known bug for htc magic or the platform doesn't support 8bit audio format?
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Mar 31, 2009
I just want to read <string-array> resource elements into a String array. I don't want to make a view or anything and mess with adapters - just want to transfer the elements. Is there a built in class for this? Or do I need to treat the resource file as a regular file?
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Apr 30, 2010
On Windows 7 laptop. Htc sync is installed, but so far out of about 30 tries i have only managed to connect the phone once. I'm hoping to root my phone, but am not gonna have any luck if they can't bloody see each other!
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Aug 3, 2010
Is there a way to convert JSON Array to normal Java Array for android ListView data binding?
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Jul 27, 2010
Is there a simple way to convert a JsonArray to a standard Java Array? Obviously, you can iterate and do it explicitly, but I wanted to see if there was a direct way to do so.
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May 13, 2010
I would like to get a byte array from an jpeg image located in my res/drawable file?
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Apr 27, 2009
Can please anyone let me know how to display a raw RGB 565 byte array on the screen.
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Jul 20, 2009
Is it possible to create a byte array from bitmap?How can I do so?
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Oct 12, 2010
I'm new to android developing but right now I'm working on an application that displays Random Facts. Since I don't want it to be in a random order, I would like to have them in a list. I would like to order through them one by one and show them using TextView.
Resources res = getResources();
myString = res.getStringArray(R.array.FactsArray);
That's what I have so far. If I'm right, that just establishes the array so I can be able to use it later. What I had before was rgenerator which chose a random string from the array and displayed it when I clicked a button.
CODE:................
But Like I said, I would like to just order through them one by one when a button is clicked.
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Nov 12, 2010
I have preferences where you can enable/disable what items will show up on the menu. There are 17 items. I made a string array in values/arrays.xml with titles for each of these 17 items.
I have preferences.xml which has the layout for my preferences file, and I would like to reference a single item from the string array to use as the title.
In the Android developer reference, I see how I can reference a single string with XML, but now how I can reference a string from an array resource in XML.
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Aug 1, 2010
I try to send an image over bluetooth to another device. This works mostly fine, but sometimes, I get a StreamCorruptedException: Wrong format: 0x27 on the receiving device. Anybody knows what this means? And how can I avoid that?
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Jul 23, 2010
I ask if there is a simple way because there is a google issue report saying that using decodeByteArray isn't possible. But that report originated in 2008 and I was hoping there was a solution not posted on there. The method listed on the issue report was to decode the format yourself, but I'd prefer to not have to put that in and slow down the program.
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Feb 2, 2012
I'm using the following code to encrypt a String (inText) whose output is a byte array named cipherText;
Code:
byte[] cipherText;
cipherText=cipher.doFinal(inText.getBytes());
The cipherText is printed in a textbox as follows:
Code:
encText.setText(new String(cipherText));
Everything works fine until here. However, in the decryption section, I need to get the contents of the textbox as a byte array again. For this purpose, I use the following code:
Code:
byte[] cText;
cText=encText.getText().toString().getBytes();
When I try to do the encryption it gives a 'bad size' error. I found out that the lenghts of the two byte arrays cipherText and cText aren't equal:
Code:
decText.setText(Integer.toString(cText.length));
encText.setText(Integer.toString(cipherText.length));
boolean res=Arrays.equals(cText, cipherText);
result.setText(Boolean.toString(res));
The 'result' textbox always prints 'false' meaning that the two byte arrays cipherText and cText aren't equal. However I convert cipherText to a String to print in a textbox and then read the contents of that textbox, convert to String back and then to Byte Aray again. Obviously some data is lost during these conversions.
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Jun 29, 2010
I have the localized strings file that is used in the Iphone app that I work on to port to Android. Are there any tools that go through the file taken from the xcode project and build the xml needed to use the strings in android? This tool should be easy to build but I appreciate any pointers to already working tools.
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Apr 8, 2010
Please could anyone suggest an approach for transferring a >2MB video from a ContentResolver into a Bytestream, without running out of memory?
See question: http://stackoverflow.com/questions/2599305/android-outofmemoryerror-w...
Here's the current code, which throws an OutOfMemoryError on the byteBuffer.write(buffer, 0, len) line when transferring large videos:
// get bytestream to upload videoByteArray = getBytesFromFile(cR, fileUriString);
public static byte[] getBytesFromFile(ContentResolver cR, String fileUriString) throws IOException { Uri tempuri = Uri.parse(fileUriString);
InputStream is = cR.openInputStream(tempuri);
byte[] b3 = readBytes(is); is.close(); return b3;
}
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