How To Set An Image In Android App With Sftp Input Stream?

I'm using Android Studio to build an application. In this app, I want to get an image in a specific folder from a linux host using Jsch sftp, and set this new picture to an already

Solution 1:

First declare ddd just after:

new AsyncTask<Integer, Void, Void>(){

so:

new AsyncTask<Integer, Void, Void>(){

        Drawable ddd = null;

        @Override
        protected Void doInBackground(Integer... params) {

Then in doInBackround change the line:

Drawable ddd = Drawable.createFromStream(bis,"ddd");

to:

ddd = Drawable.createFromStream(bis,"ddd");

and finally move iv1.setImageDrawable(ddd); inside of onPostExecute of your AsyncTask (you must override it like you have done for doInBackground):

@Override
protected void onPostExecute(Void unused) {
    iv1.setImageDrawable(ddd);
}

Solution 2:

Use the following method to convert imageView drawable to input stream

void getInputStreamFromImageView(ImageView imageView) {
    Bitmap bitmap = ((BitmapDrawable) imageView.getDrawable()).getBitmap();
    ByteArrayOutputStream bos = new ByteArrayOutputStream();
    bitmap.compress(Bitmap.CompressFormat.PNG, 0 /*ignored for PNG*/, bos);
    byte[] bitmapdata = bos.toByteArray();
    ByteArrayInputStream bs = new ByteArrayInputStream(bitmapdata);
}