How can I convert an image into a Base64 string?

Question

What is the code to transform an image (maximum of 200 KB) into a Base64 String?

I need to know how to do it with Android, because I have to add the functionali

Answer 1

Here is code for image encoding and image decoding.

In an XML file

In a Java file:

TextView textView5;
Bitmap bitmap;

textView5 = (TextView) findViewById(R.id.tv5);

bitmap = BitmapFactory.decodeResource(getResources(), R.drawable.logo);

new AsyncTask() {
    @Override
    protected String doInBackground(Void... voids) {
        ByteArrayOutputStream stream = new ByteArrayOutputStream();
        bitmap.compress(Bitmap.CompressFormat.JPEG, 70, stream);
        byte[] byteFormat = stream.toByteArray();

        // Get the Base64 string
        String imgString = Base64.encodeToString(byteFormat, Base64.NO_WRAP);

        return imgString;
    }

    @Override
    protected void onPostExecute(String s) {
       textView5.setText(s);
    }
}.execute();