Can someone tell me the code to convert image into byte array and that byte array into base64 string. i write the below code not getting proper result .
String filepath = "/sdcard/Image/ic_launcher.jpg";
File imagefile = new File(filepath);
FileInputStream fis = null;
try {
fis = new FileInputStream(imagefile);
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
Bitmap bm = BitmapFactory.decodeStream(fis);
ByteArrayOutputStream baos = new ByteArrayOutputStream();
bm.compress(Bitmap.CompressFormat.JPEG, 100 , baos);
byte[] b = baos.toByteArray();
String encodedImage = Base64.encodeToString(b, Base64.DEFAULT);
result im getting is
[-1, -40, -1, -32, 0, 16, 74, 70, 73, 70, 0, 1, 1, 1, 0, 72, 0, 72, 0, 0, -1, -20, 4, -7, 68, 117, 99, 107, 121, 0, 1, 0, 4, 0, 0, 0, 75, 0, 2, 4, -28, 0, 0, 2, 112, 0, 68, 0, 111, 0, 110, 0, 110, 0, 97, 0, 32, 0, 83, 0, 105, 0, 109, 0, 112, 0, 115, 0, 111, 0, 110, 0, 32, 0, 117, 0, 115, 0, 101, 0, 115, 0, 32, 0, 97, 0, 32, 0, 99, 0, 111, 0, 109, 0, 112, 0, 117, 0, 116, 0, 101, 0, 114, 0, 32, 0, 116, 0, 111, 0, 32, 0, 99, 0, 104, 0, 101, 0, 99, 0, 107, 0, 32, 0, 97, 0, 32, 0, 115, 0, 105, 0, 116, 0, 101, 0, 32, 0, 116, 0, 104, 0, 97, 0, 116, 0, 32, 0, 112, 0, 97, 0, 121, 0, 115, 0, 32, 0, 104, 0, 101, 0, 114, 0, 32, 0, 109, 0, 111, 0, 110, 0, 101, 0, 121, 0, 32, 0, 116, 0, 111, 0, 32, 0, 117, 0, 112, 0, 108, 0, 111, 0, 97, 0, 100, 0, 32, 0, 118, 0, 105, 0, 100, 0, 101, 0, 111, 0, 32, 0, 99, 0, 108, 0, 105, 0, 112, 0, 115, 0, 32, 0, 111, 0, 102, 0, 32, 0, 104, 0, 101, 0, 114, 0, 32, 0, 101, 0, 97, 0, 116, 0, 105, 0, 110, 0, 103, 0, 32, 0, 97, 0, 116, 0, 32, 0, 104, 0, 101, 0, 114, 0, 32, 0, 104, 0, 111, 0, 109, 0, 101, 0, 32, 0, 105, 0, 110, 0, 32, 0, 79, 0, 108, 0, 100, 0, 32, 0, 66, 0, 114, 0, 105, 0, 100, 0, 103, 0, 101, 0, 44, 0, 32, 0, 78, 0, 101, 0, 119, 0, 32, 0, 74, 0, 101, 0, 114, 0, 115, 0, 101, 0, 121, 0, 46, 0, 46, 0, 46, 0, 68, 0, 111, 0, 110, 0, 110, 0, 97, 0, 32, 0, 83, 0, 105, 0, 109, 0, 112, 0, 115, 0, 111, 0, 110, 0, 32, 0, 117, 0, 115, 0, 101, 0, 115, 0, 32, 0, 97, 0, 32, 0, 99, 0, 111, 0, 109, 0, 112, 0, 117, 0, 116, 0, 101, 0, 114, 0, 32, 0, 116, 0, 111, 0, 32, 0, 99, 0, 104, 0, 101, 0, 99, 0, 107, 0, 32, 0, 97, 0, 32, 0, 115, 0, 105, 0, 116, 0, 101, 0, 32, 0, 116, 0, 104, 0, 97, 0, 116, 0, 32, 0, 112, 0, 97, 0, 121, 0, 115, 0, 32, 0, 104, 0, 101, 0, 114, 0, 32, 0, 109, 0, 111, 0, 110, 0, 101, 0, 121, 0, 32, 0, 116, 0, 111, 0, 32, 0, 117, 0, 112, 0, 108, 0, 111, 0, 97, 0, 100, 0, 32, 0, 118, 0, 105, 0, 100, 0, 101, 0, 111, 0, 32, 0, 99, 0, 108, 0, 105, 0, 112, 0, 115, 0, 32, 0, 111, 0, 102, 0, 32, 0, 104, 0, 101, 0, 114, 0, 32, 0, 101, 0, 97, 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19, 15, 20, 29, 26, 31, 30, 29, 26, 28, 28, 32, 36, 46, 39, 32, 34, 44, 35, 28, 28, 40, 55, 41, 44, 48, 49, 52, 52, 52, 31, 39, 57, 61, 56, 50, 60, 46, 51, 52, 50, -1, -37, 0, 67, 1, 9, 9, 9, 12, 11, 12, 24, 13, 13, 24, 50, 33, 28, 33, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50, -1, -64, 0, 17, 8, 1, 32, 1, -52, 3, 1, 34, 0, 2, 17, 1, 3, 17, 1, -1, -60, 0, 28, 0, 0, 0, 7, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 2, 3, 4, 5, 6, 7, 8, -1, -60, 0, 76, 16, 0, 1, 3, 2, 4, 3, 6, 3, 5, 4, 8, 4, 5, 2, 7, 0, 1, 2, 3, 17, 0, 4, 5, 18, 33, 49, 6, 65, 81, 19, 34, 97, 113, -127, -111, 20, 50, -95, 7, 66, -79, -63, -16, 21, 35, 82, -47, 36, 51, 98, 114, -126, -94, -31, -15, 22, 83, -62, -46, 37, 99, -110, -109, -78, 8, 115, 52, 53, 68, 85, 100, -77, -30, -1, -60, 0, 26, 1, 0, 3, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 2, 3, 4, 5, 6, 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-82, -10...
and at end of this byte array im getting this 3 dots and array is not completed ,so how can i get correct byte array
base64 string is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d/phGM+X8u7ckH8Wd/8AyD+fvyf3+n7zfv6zed/pldJfu/Lu4hA6/vD/AKJ8v+skwfl4b94JPNX5
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I wrote the following code to convert an image from sdcard to a Base64 encoded string to send as a JSON object.And it works great:
String filepath = "/sdcard/temp.png";
File imagefile = new File(filepath);
FileInputStream fis = null;
try {
fis = new FileInputStream(imagefile);
} catch (FileNotFoundException e) {
e.printStackTrace();
}
Bitmap bm = BitmapFactory.decodeStream(fis);
ByteArrayOutputStream baos = new ByteArrayOutputStream();
bm.compress(Bitmap.CompressFormat.JPEG, 100 , baos);
byte[] b = baos.toByteArray();
encImage = Base64.encodeToString(b, Base64.DEFAULT);
They have wrapped most stuff need to solve your problem, one of the tests looks like this:
String filename = CSSURLEmbedderTest.class.getResource("folder.png").getPath().replace("%20", " ");
String code = "background: url(folder.png);";
StringWriter writer = new StringWriter();
embedder = new CSSURLEmbedder(new StringReader(code), true);
embedder.embedImages(writer, filename.substring(0, filename.lastIndexOf("/")+1));
String result = writer.toString();
assertEquals("background: url(" + folderDataURI + ");", result);
Try this simple solution to convert file to base64 string
String base64String = imageFileToByte(file);
public String imageFileToByte(File file){
Bitmap bm = BitmapFactory.decodeFile(file.getAbsolutePath());
ByteArrayOutputStream baos = new ByteArrayOutputStream();
bm.compress(Bitmap.CompressFormat.JPEG, 100, baos); //bm is the bitmap object
byte[] b = baos.toByteArray();
return Base64.encodeToString(b, Base64.DEFAULT);
}
here is another solution...
System.IO.Stream st = new System.IO.StreamReader (picturePath).BaseStream;
byte[] buffer = new byte[4096];
System.IO.MemoryStream m = new System.IO.MemoryStream ();
while (st.Read (buffer,0,buffer.Length) > 0) {
m.Write (buffer, 0, buffer.Length);
}
imgView.Tag = m.ToArray ();
st.Close ();
m.Close ();
hope it helps!
Source: Stackoverflow.com