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ViewPager + Picasso + multiple images from URL String array

By : user2175031
Date : October 16 2020, 08:10 PM
will help you Please help me. I'm following the example ViewPagerActivity from sample PhotoView of Chris Banes (https://github.com/chrisbanes/PhotoView) and I want to change the drawable with Picasso URL images. So, I'm trying to put multiple images in HackyViewPager via Picasso String array of urls. , I see something wrong, that is
code :
for(int i= 0; i < numbers.length; i++){
class SamplePagerAdapter extends PagerAdapter {

    private String stringDefinitionGemstonesPhoto = ("https://geology.com/minerals/photos/calcite-marble-127.jpg, https://geology.com/minerals/photos/calcite-concrete.jpg");
    private String[] strAry = stringDefinitionGemstonesPhoto.split(",");

    public int getCount() {
        return strAry.length;

    public Object instantiateItem(@NonNull ViewGroup container, int position) {
        PhotoView photoView = new PhotoView(container.getContext());
        try {
            new DownloadImageTask(photoView)
        } catch (Exception ex) {
            Log.e("Error", ex.getMessage());

        container.addView(photoView, ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT);
        return photoView;

    public void destroyItem(@NonNull ViewGroup container, int position, @NonNull Object object) {
        container.removeView((View) object);

    public boolean isViewFromObject(@NonNull View view, @NonNull Object object) {
        return view == object;

    public class DownloadImageTask extends AsyncTask<String, Void, Bitmap> {
        private ImageView bmImage;

        DownloadImageTask(ImageView bmImage) {
            this.bmImage = bmImage;

        protected Bitmap doInBackground(String... urls) {
            String urlDisplay = urls[0];
            Bitmap myImage = null;
            try {
                InputStream in = new java.net.URL(urlDisplay).openStream();
                myImage = BitmapFactory.decodeStream(in);
            } catch (Exception e) {
                Log.e("Error", e.getMessage());
            return myImage;

        protected void onPostExecute(Bitmap result) {

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ViewPager unable to load images lazily with Picasso

By : paper100
Date : March 29 2020, 07:55 AM
should help you out Your first approach should work fine... if you implement it correctly. I would expect your code to crash with a NullPointerException.
code :
ImageView imageView = (ImageView)getView().findViewById(R.id.fragment_image);
ImageView imageView = (ImageView)myFragmentView.findViewById(R.id.fragment_image);

How to specify multiple fallback images with Picasso?

By : mndev
Date : March 29 2020, 07:55 AM
To fix the issue you can do Natively there's no API for such functionality. But with some clever coded Picasso.Target you can easily achieve such functionality.
I'll add here a quick hack-untested code that should give you a rought idea on what to look for. You'll have to test and maybe fine tune, but that should be pretty OK.
code :
private static final List<MultiFallBackTarget> TARGETS = new ArrayList<MultiFallBackTarget>();

public static class MultiFallBackTarget implements Picasso.Target {

   private WeakReference<ImageView> weakImage;
   private List<String> fallbacks;

   public MultiFallBackTarget(ImageView image){
      weakImage = new WeakReference<>(image);
      fallbacks = new ArrayList<String>();

   public void addFallback(String fallbackUrl){

   public void onBitmapLoaded(Bitmap bitmap, LoadedFrom from){


      ImageView image = weakImage.get();
      if(image == null) return;

   public void onBitmapFailed(Drawable errorDrawable){
      ImageView image = weakImage.get();
      if(image == null) {

      if(fallbacks.size() > 0){
         String nextUrl = fallbacks.remove(0);
         // here you call picasso again
      } else {
   public void onPrepareLoad(Drawable placeHolderDrawable){}

   private void removeSelf(){

Display Images From Array of String URL's in ListView in Android Studio using Picasso

By : Raja
Date : March 29 2020, 07:55 AM
like below fixes the issue I am attempting to load an a listview that contains text and an image using picasso. I'm attempting to load the images using from their respective URL's that are in a string array. The text portion is loading in the listView. However, the images are not loading so all i get is a listView with the texts in their respective rows but no images. How can I do this by using Picasso? in advance! , I've modified your Adapter.
code :
public View getView(int _position, View _convertView, ViewGroup _parent) {
View view = _convertView;
ViewHolder viewHolder;

if (view == null) {
    view= View.inflate(context, R.layout.content_orders, null);
    viewHolder = new ViewHolder(view);
} else {
    viewHolder = (ViewHolder) _convertView.getTag();
    Picasso.with(OrdersActivity.this).load(url[position].replace(" ","%20")).into(viewHolder.myImage);  //here i'm editting your url, because if your url contains and blank space you can't download image from url
    //for that i'm encoding your URL by replacing blank space with "%20"
return view;
static class ViewHolder{
 ImageView myImage;
 TextView description;
 public ViewHolder(View v){
    myImage = (ImageView) v.findViewById(R.id.imageView2);
    description = (TextView) v.findViewById(R.id.textView2);

How to load images in ViewPager in Android with Picasso

By : Joebro622
Date : March 29 2020, 07:55 AM
Hope this helps I was't sure what to name the title, anyway.. I'm currently inflating a ViewPager with a TabLayout into a a dialog like this: , Well, you're creating the layout here:
code :
ViewGroup layout = (ViewGroup) inflater.inflate(resId, collection, false);
return layout;
ViewGroup layout = (ViewGroup) inflater.inflate(resId, collection, false);

ImageView imageView = (ImageView) layout.findViewById(R.id.id_of_your_imageview);

return layout;

Picasso Download Multiple Images From URL

By : Ci noreply
Date : March 29 2020, 07:55 AM
I hope this helps . I may be being dumb, but as I believe you are using Java, may I suggest you use this tutorial.
This is some code to take all images from the website:
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