Develop Reference

Convert files to base64 string to send as attachment through android application

I creating an application in which I am using mandrill app API to send emails. Emails without attachment are delivering, but when I attach image to it, it is received as damaged image at receiver side. Here it is required to convert file into base64 string to pass in json array. I used this code:
public static String encodeImagetoBase64(Bitmap img) {
Bitmap image = img;
ByteArrayOutputStream byteOStream = new ByteArrayOutputStream();
image.compress(Bitmap.CompressFormat.JPEG, 100, byteOStream);
byte[] b = byteOStream.toByteArray();
String imageEncoded = Base64.encodeToString(b, Base64.DEFAULT);
Log.e("Look", imageEncoded);
return imageEncoded;
}
So can anyone tell me the solution, why image is getting damaged.
Similarly I also want to convert files with extension ".txt,.doc,.docx,.pptx,.pdf,.xls" etc as attachment, so please suggest me any source for that. Thanx

I am using this method and it is working:
public static String getFileBinary(String uploadFilePath) {
String encodedString = "0";
if (uploadFilePath.length() < 2)
return encodedString;
try {
InputStream inputStream = new FileInputStream(uploadFilePath);//You can get an inputStream using any IO API
byte[] bytes;
byte[] buffer = new byte[8192];
int bytesRead;
ByteArrayOutputStream output = new ByteArrayOutputStream();
try {
while ((bytesRead = inputStream.read(buffer)) != -1) {
output.write(buffer, 0, bytesRead);
}
} catch (IOException e) {
e.printStackTrace();
}
bytes = output.toByteArray();
encodedString = Base64.encodeToString(bytes, Base64.DEFAULT);
} catch (IOException es) {
}
return encodedString;
}

base64 string is not uploaded in server android?

I need to send the image (from gallery) to server in the format of base64 string. I get the path of the image and converted it to base64 string. but at server the image is not showing fully. only 10% of the image is showing at server side.Please any one help me how to convert the image to base64 string.
code:
filePath = cursor.getString(columnIndex);
Bitmap bitmapOrg = BitmapFactory.decodeFile(filePath);
ByteArrayOutputStream bao = new ByteArrayOutputStream();
bitmapOrg.compress(CompressFormat.PNG, 100, bao);
byte [] ba = bao.toByteArray();
ba1 =Base64.encodeToString(ba, Base64.DEFAULT);
image size:460kb

try with this i hope it will work for you and send using httpPost method.
public static String BitmapToString(Bitmap bmp) {
ByteArrayOutputStream stream = new ByteArrayOutputStream();
bmp.compress(Bitmap.CompressFormat.PNG, 100, stream);
byte[] byteArray = stream.toByteArray();
String base64 = Base64.encodeToString(byteArray, Base64.DEFAULT);
return base64;
}
and server side.
Base64 base64=new Base64();
saveImage(base64.decode(profilePic),"yourName");
public void saveImage(byte[] bytes,String name){
String path="D:/"+name.hashCode()+".png";
try {
FileOutputStream f = new FileOutputStream(path);
f.write(bytes);
f.close();
} catch (Exception e) {
e.printStackTrace();
}
}

Converting Image to bytearray in order to upload image to server Android

I have image's sd card path. Now what are the next steps to convert image into byte array because I want to upload the image to server?
Thanks in advance.

public static byte[] toByteArray (Bitmap raw) {
byte[] byteArray = null;
try {
ByteArrayOutputStream stream = new ByteArrayOutputStream ();
raw.compress (Bitmap.CompressFormat.JPEG, 100, stream);
byteArray = stream.toByteArray ();
}
catch (Exception e) {
e.printStackTrace ();
}
return byteArray;
}

Android: Encode & Decode base64

How to encode and decode any image from base64 format.
I donno anything about base64, just now I came to know that it saves image in String format. Please explain about base64 and how to use it in android coding.
Will it reduce the size of an image?
Thanks in advance...

To encode any file:
private String encodeFileToBase64(String filePath)
{
InputStream inputStream = new FileInputStream(filePath);//You can get an inputStream using any IO API
byte[] bytes;
byte[] buffer = new byte[8192];
int bytesRead;
ByteArrayOutputStream output = new ByteArrayOutputStream();
try {
while ((bytesRead = inputStream.read(buffer)) != -1) {
output.write(buffer, 0, bytesRead);
}
} catch (IOException e) {
e.printStackTrace();
}
bytes = output.toByteArray();
return Base64.encodeToString(bytes, Base64.DEFAULT);
}
Decode:
byte[] data = Base64.decode(base64, Base64.DEFAULT);

Base64 allows you to represent binary data in ASCII format, You can use it for send/receive images to an endpoint
To encode/decode check this two methods:
public static String getBase64(Bitmap bitmap)
{
try{
ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
bitmap.compress(Bitmap.CompressFormat.JPEG, 90, byteArrayOutputStream);
byte[] byteArray = byteArrayOutputStream.toByteArray();
return Base64.encodeToString(byteArray, Base64.NO_WRAP);
}
catch(Exception e)
{
return null;
}
}
public static Bitmap getBitmap(String base64){
byte[] decodedString = Base64.decode(base64, Base64.NO_WRAP);
return BitmapFactory.decodeByteArray(decodedString, 0, decodedString.length);
}

android decode string base 64 to bitmap

Hi guys I wanted to ask you one thing, I have a chat that transfers strings and I can even attach of JPEG images before sending them to convert it into a string and then decode in BITMAP just that when I decode it crashes the app. I wanted to know if it is the right code to decode it.
NOME = (TextView) row.findViewById(R.id.comment);
NOME.setText(coment.comment);
String a = NOME.getText().toString();
if(a.length() > 1024 )
{
byte[] image = Base64.decode(a, 0);
int lung = a.length();
Bitmap bitmap = BitmapFactory.decodeByteArray(image, 0, lung);
Image = (ImageView) row.findViewById(R.id.image);
Image.setImageBitmap(bitmap);
}

The code looks fine, if I had to guess I would say you're getting the Out of Memory error, which is very common when loading images. Check out
http://developer.android.com/training/displaying-bitmaps/load-bitmap.html
for some best practices when loading images.

The method for Encoding an Image to String Base64 :
public static String encodeToString() {
String imageString = null;
try {
Bitmap bm = BitmapFactory.decodeResource(getResources(), R.drawable.ic_launcher);
ByteArrayOutputStream baos = new ByteArrayOutputStream();
bm.compress(Bitmap.CompressFormat.PNG, 100, baos); //bm is the bitmap object
byte[] b = baos.toByteArray();
imageString = Base64.encodeToString(b, Base64.DEFAULT);
} catch (Exception e) {
e.printStackTrace();
}
return imageString;
}
The method for Decoding String Base64 to Image :
public static void decodeToImage(String imageString) {
try {
byte[] imageByte = Base64.decode(imageString, Base64.DEFAULT);
Bitmap bm = BitmapFactory.decodeByteArray(imageByte, 0, imageByte.length);
image_view.setImageBitmap(bm);
} catch (Exception e) {
e.printStackTrace();
}
}