Android: Invisible Seekbar Thumb Leaves "Hole" in Seekbar

Question

I want to make a seekbar thumb completely invisible. However, the following code:

seekBar.getThumb().mutate().setAlpha(0);

makes the thumb not appear, but the thumb appears to make a "hole" in its seekbar, as shown in the image below.

How can one make a thumb invisible without it leaving a gap under it?

Answer 1

The solution is very simple.

In the seekbar's XML layout, add the following:

android:splitTrack="false"

Alternatively, your can programatically call:

seekbar.setSplitTrack(false);

The end result looks like this:

Answer 2

Use this for LOLLIPOP and newer, while in older version splitTrack=false by default

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
    seekbar.setSplitTrack(false);
}