How to make the icon background of an Android app transparent?

Question

A PNG image is to be used as the icon foreground, and the background should be completely transparent.

Using Android Studio > New Image Asset > Configure

Answer 1

Get a view of the imageButton

View v = findViewById(R.id.myImageBtn);

get the icon from the app for example Chrome

pkgnam="com.android.chrome";
Intent intent1 = ctx.getPackageManager().getLaunchIntentForPackage(pgknam);
Drawable myIcon = getPackageManager().getActivityIcon(intent1);

set the background icon the same as the foreground icon

v.setForeground(myIcon);
v.setBackground(myIcon);