Dfyjkt

How can I set an image to an imageView directly from Firebase, given I already have the url to the user's uploaded image?

You can use image loading library like Glide or Picasso,

1st add the dependency in build.gradle (Moduke:App) under dependencies,

dependencies 
....
implementation 'com.github.bumptech.glide:glide:4.8.0'
annotationProcessor 'com.github.bumptech.glide:compiler:4.8.0'

Then at the activity where your image view is load the image from url:

Glide.with(this).load(IMAGE_URL).into(imageView);

IMAGE_URL is the firebase storage url for the image, and imageView is where you displaying the image.

Follow https://bumptech.github.io/glide/ for more info

if you have image URL available at client side. Implement
GLIDE and pass the URL and ImageView to Glide. It will take care of showing the image to client.

ImageView imageView = findViewById(R.id.imageView_ID);

RequestOptions requestOption = new RequestOptions()
 .placeholder(R.drawable.placeholder)
 .error(R.drawable.ic_error_1)
 .diskCacheStrategy(DiskCacheStrategy.ALL)
 .priority(Priority.HIGH)
 .dontAnimate()
 .dontTransform()

new Glide
 .with(mcontext)
 .load("https://placeholder.com/img/products/imageurl.png")
 .apply(requestOption)
 .thumbnail(0.1f)
 .into(imageView)

add dependency
implementation 'com.github.bumptech.glide:glide:4.8.0'
annotationProcessor 'com.github.bumptech.glide:compiler:4.8.0'

 private CircleImageView uDisplayImage;
 currentFirebaseUser = FirebaseAuth.getInstance().getCurrentUser();
 FirebaseDatabase firebaseDatabase = FirebaseDatabase.getInstance();

 String uId = currentFirebaseUser.getUid();
 myRef = firebaseDatabase.getReference("user").child(uId);
 myRef.addValueEventListener(new ValueEventListener() 
 @Override
 public void onDataChange(@NonNull DataSnapshot dataSnapshot) 



 image = dataSnapshot.child("image").getValue().toString();


 if (!image.equals("default")) 

 Picasso.get().load(image).placeholder(R.drawable.idofcircularview).into(uDisplayImage);
 



 

 @Override
 public void onCancelled(@NonNull DatabaseError databaseError) 
 Toast.makeText(SattingsActivity.this, "Sorry Data is not found", Toast.LENGTH_SHORT).show();

 
 );
 implementation 'de.hdodenhof:circleimageview:2.2.0'
 implementation 'com.squareup.picasso:picasso:2.71828'