Using Button To Change TextView Size

Question

I'm new to this but I have some understanding. Currently I have an app that consists of lots of TextViews with a specific size , however i want to be able to implement a Button able change the TextView size of a TextView or all TextViews. Can I have some help please with this with examples of codes (I prefer java) Thank You!

Answer 1

On click of button you can change layout params of the textview you want to resize as following:

TextView tv=<find>
LayoutParams lp = (LayoutParams) tv.getLayoutParams();
lp2.height = 100;
tv.setLayoutParams(lp);
tv.requestLayout();