How to set transparent background for Image Button in code?

Question

I can set ImageButton background transparent in layout.xml using:

android:background=\"@android:color/transparent\"

How I can

Answer 1

If you want to use android R class

textView.setBackgroundColor(ContextCompat.getColor(getActivity(), android.R.color.transparent));

and don't forget to add support library to Gradle file

compile 'com.android.support:support-v4:23.3.0'