How do you change the size of an ImageView?
If you're working with an existing view it can be a lot of work creating a new set of LayoutParams from scratch. Instead - you can grab the view's existing LayoutParams, edit these, and then apply them to the view to update its LayoutParams using setLayoutParams()
ImageView imageView = findViewById(R.id.dl_image);LayoutParams params = (LayoutParams) imageView.getLayoutParams();params.width = 120;// existing height is ok as is, no need to edit itimageView.setLayoutParams(params);Make sure you import the correct type of LayoutParams. For this case, as you commented, you can just use the LayoutParams of a ViewGroup. If you were setting parameters specific to a certain type of view (e.g. alignments in RelativeLayouts) you would have to import the LayoutParams of that type of view.
you can do it all like
ImageView imageView = findViewById(R.id.dl_image);imageView.getLayoutParams().width = 120;