how to set width which is equal to another widget on android

Question

I need to draw a horizontal line below a text field such that the width of the line equals the text width (not the width of the full screen).

In my app I have a textview

Answer 1

It depends on your use case. If you plan to modify things in the layout dynamically and have them also sized the same as the TextView, you may want to wrap them in a parent view together. If it's a one-time thing, use RelativeLayout as suggested by the other answer here.