Change top margin programmatically

[Greum]

I'm trying to change the top margin of a textView (within a constraint view if that makes a difference). I tried the following:

MarginLayoutParams p = (MarginLayoutParams) textView38.getLayoutParams();
p.topMargin = 0;

however, the second MarginLayoutParams gives an error: Cannot resolve symbol.

Can anyone point me in the right direction?

 

[Deleted User]

How are you setting the changed layout params? Something like this, perhaps?

layoutParams.setMargins(mLeftMargin, mTopMargin, 0, 0);

 

[Greum]

Thanks. I've not tried that. I thought the code I had was supposed to set the top margin only.

Edit:

Is this not setting the parameters for the layout? I'm trying to set the margin for a single textView.

 

[Deleted User]

setLayoutParams is a method on View. And TextView is a type of View.
Some example code here

https://www.android-examples.com/set-textview-margin-programmatically-in-android/

 

[Greum]

Many thanks! That helps get it into perspective.