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

Solution 1:

To encode any file:

private String encodeFileToBase64(String filePath)
{
    InputStreaminputStream=newFileInputStream(filePath);//You can get an inputStream using any IO APIbyte[] bytes;
    byte[] buffer = newbyte[8192];
    int bytesRead;
    ByteArrayOutputStreamoutput=newByteArrayOutputStream();
    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);

Solution 2:

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:

publicstaticStringgetBase64(Bitmap bitmap)
{
    try{
        ByteArrayOutputStream byteArrayOutputStream = newByteArrayOutputStream();  
        bitmap.compress(Bitmap.CompressFormat.JPEG, 90, byteArrayOutputStream);
        byte[] byteArray = byteArrayOutputStream.toByteArray();

        returnBase64.encodeToString(byteArray, Base64.NO_WRAP);
    }
    catch(Exception e)
    {
        returnnull;
    }
}

publicstaticBitmapgetBitmap(String base64){
    byte[] decodedString = Base64.decode(base64, Base64.NO_WRAP);
    returnBitmapFactory.decodeByteArray(decodedString, 0, decodedString.length);
}