How to load image from aws with picasso with private access

Question

I\'m trying to load image stored on aws S3 into my android app using Picasso but I am getting a blank image with no errors in my logcat and nothing to me from general debugging

Answer 1

You can use the below set of code , which is a aynctask which will use glide to attach private images from s3 by generating presignedurl.

  public class sets3imageasync extends AsyncTask<Object, Void, String> {
    // The list of objects we find in the S3 bucket

static final String s3bucket=bucket_name;


Context scontext;
ImageView image;


@Override
protected String doInBackground(Object... objects) {
    // Queries files in the bucket from S3.
    Calendar cal = Calendar.getInstance();
    Log.d(TAG, "doInBackground: in progress");
    cal.setTime(new Date());
    cal.add(Calendar.HOUR, +1);
    Date oneHourLater = cal.getTime();
    AmazonS3Client s3 =  (AmazonS3Client) objects[0];
    scontext= (Context) objects[1];
    image=(ImageView) objects[2];
    String imagekey=(String) objects[3]; 
    GeneratePresignedUrlRequest generatePresignedUrlRequest =
            new GeneratePresignedUrlRequest(s3bucket, imagekey)
                    .withMethod(HttpMethod.GET)
                    .withExpiration(oneHourLater);
    URL url = s3.generatePresignedUrl(generatePresignedUrlRequest);

    Log.e("url was", url.toString());
    return url.toString();
}

@Override
protected void onPostExecute(String s) {
    super.onPostExecute(s);


    Log.d(TAG, "onPostExecute: completed "+s);

    Glide.with(scontext).load(s)
            .apply(new RequestOptions()
                    .centerCrop())
            .placeholder(scontext.getResources().getDrawable(R.drawable.progress_animation))
            .into((image));

}

this can be called as below

new sets3imageasync().execute(s3Client,context,Image_view);

Answer 2

Simply use this:

Picasso.with(getApplicationContext()).load(your_url).noFade().into(imageView);

Answer 3

write below code to load image in Picasso. 
variables:-  
String file_path                          -->> this is your image file path 
Imageview mViewHolder.img_post_photo      -->> this is your imageview to load image.

                        Picasso.with(context)
                                .load(file_path)
                                .placeholder(R.mipmap.ic_launcher)
                                .error(R.mipmap.ic_launcher)
                                .into(mViewHolder.img_post_photo, new Callback() {
                                    @Override
                                    public void onSuccess() {

                                    }

                                    @Override
                                    public void onError() {
                                        Picasso.with(context)
                                                .load(file_path)
                                                .placeholder(R.mipmap.ic_launcher)
                                                .error(R.mipmap.ic_launcher)
                                                .into(mViewHolder.img_post_photo);
                                    }
                                });

Set dependencies in your app build.gradle file:-
compile 'com.squareup.picasso:picasso:2.5.2'

hope this code helps you.

Answer 4

You need to generate a presigned Url from S3 client and you can pass that url to picasso. That url will be public and will have an expriy date.