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POCreating a BufferedImage from a byte array java
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2012-07-05T12:02:07.227
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I have a byte array and I need to convert this to a image. I've read this tutorial: <a href="http://www.mkyong.com/java/how-to-convert-byte-to-bufferedimage-in-java/" rel="nofollow">http://www.mkyong.com/java/how-to-convert-byte-to-bufferedimage-in-java/</a> This tutorial uses the <code>BufferedImage</code> and <code>ImageIO</code> which is in this import statement <pre><code>import javax.imageio.ImageIO; import java.awt.image.BufferedImage; </code></pre> But I can't find these classes anywhere. I have the JDK x64 version with the javax installed. Anybody? My whole source code: <pre><code>public class ReadImageFromFileActivity extends Activity implements OnClickListener { Context c; Button read; ImageView image; byte[] fileBytes; byte[] image1; byte[] image2; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); c = getApplicationContext(); read = (Button)findViewById(R.id.file); read.setOnClickListener(this); image = (ImageView)findViewById(R.id.image); image1 = new byte[ 500 * 500]; image2 = new byte[ 500 * 500]; } public static byte[] getBytesFromFile(Context c) throws IOException { File file = new File("/mnt/sdcard/LeftIndex.FIR"); Uri URIpath = Uri.fromFile(file); InputStream is = c.getContentResolver().openInputStream(URIpath); long length = file.length(); if (length > Integer.MAX_VALUE) { // File is too large } // Create the byte array to hold the data byte[] bytes = new byte[(int)length]; // Read in the bytes int offset = 0; int numRead = 0; while (offset < bytes.length && (numRead=is.read(bytes, offset, bytes.length-offset)) >= 0) { offset += numRead; } // Ensure all the bytes have been read in if (offset < bytes.length) { throw new IOException("Could not completely read file "+file.getName()); } // Close the input stream and return bytes is.close(); return bytes; } public void onClick(View v) { try { fileBytes = getBytesFromFile(c); convertByteArray(fileBytes); } catch (IOException e) { Log.e("++++getBytesFromFile SAYS: ", "Couldn't read file!!!"); e.printStackTrace(); } } public void convertByteArray(byte[] buffer) { System.arraycopy(buffer, 64, image1, 0, 500 * 500); System.arraycopy(buffer, 60, image2, 0, 500 * 500); Bitmap bmp = BitmapFactory.decodeByteArray(image1, 0, image1.length); ImageView image=new ImageView(this); image.setImageBitmap(bmp); } </code></pre> } Explanation of the code in the function <code>getBytesFromFile</code> I construct a new File out of a .FIR file at my SD-card. This file will be converted to a Byte array and returns the constructed byte array. This byte-array will be passed into a function called <code>convertByteArray</code> which will be splitted into two separate Byte arrays. From each of these two byte arrays I want to construct a Bitmap. But logcat only says that the bitmapFactory returns null. Anybody have any solution to this? 
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<java><android><swing>
Title
Creating a BufferedImage from a byte array java
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1. USTobias Moe Thorstensen
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1. USTobias Moe Thorstensen
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