To do this:
1.- I make the instance to firebase
mDatabase = FirebaseDatabase.getInstance().getReference().child("Videos");
2.- Then I link the layout to the code
mNoticiasSingleTitle = (TextView)findViewById(R.id.post_titleNoti);
mNoticiasSingleImage = (ImageView) findViewById(R.id.imageView);
mNoticiasSingleVid = (YouTubePlayerView) findViewById(R.id.videoView);
3.- I work in onDataChange(DataSnapshot dataSnapshot){}
String post_title = (String)dataSnapshot.child("title").getValue();
String post_image = (String)dataSnapshot.child("image").getValue();
String post_video = (String)dataSnapshot.child("vid").getValue();
mNoticiasSingleTitle .setText(post_consejo);
Picasso.with(VideoAct.this).load(post_image).into(mNoticiasSingleImage);
//Missing code here
To load the image I use picasso and if I want to upload a video of youtube as I can do it, help please, thanks.