How to download images with specific size from firebase storage

Question

I am using firebase storage in my android app to store images uploaded by users. all images uploaded are square in shape. I discovered that downloading this

Answer 1

Try downloading your image using the following commands:-

StorageReference islandRef = storageRef.child("yourImage.jpg");
    // defines the specific size of your image
    final long ONE_MEGABYTE = 1024 * 1024;
    islandRef.getBytes(ONE_MEGABYTE).addOnSuccessListener(new OnSuccessListener<byte[]>() {
        @Override
        public void onSuccess(byte[] bytes) {
            // Data for "yourImage.jpg" is returns, use this as needed
        }
    }).addOnFailureListener(new OnFailureListener() {
        @Override
        public void onFailure(@NonNull Exception exception) {
            // Handle any errors
        }
    });

Answer 2

I was finally able to download images from firebase storage using MyUrlLoader class

You see, firebase storage urls look like this

firebasestorage.googleapis.com/XXXX.appspot.com/Folder%2Image.png?&alt=media&token=XXX

As you can see above, the link already have this special question mark character ? which stands for the start of querying string so when i use CustomImageSize class, another ? was being added so the link was ending up with two ? which made downloading to fail

firebasestorage.googleapis.com/XXXX.appspot.com/Folder%2Image.png?&alt=media&token=XXX?w=200&h=200

Solution was to remove the ? in my CustomImageSize class. so it ended up like this

    public class CustomImageSize implements MyDataModel {

  private String uri;

  public CustomImageSize(String uri){
    this.uri = uri;
  }

  @Override
  public String buildUrl(int width, int height) {

    return uri + "w=" + width + "&h=" + height;
  }
}

Although it downloaded, am not sure whether entire image was being downloaded or just the custom size one. This is because, i tried to access the image in my browser after correcting the error that was making viewing to fail, but still i was receiving an entire image. not a resized image (w=200&h=200)