[BUG] The bubble can't be seen when I set visibility=gone/invisible

[iluhcm]

Hi,

The project is so good to me and everyone. I just use it for a few days and found something that I can't handle with the DiscreteSeekBar...

Here is my xml file activity_test.xml:

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">

    <org.adw.library.widgets.discreteseekbar.DiscreteSeekBar
        android:id="@+id/discrete3"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_centerVertical="true"
        android:visibility="gone"
        app:dsb_indicatorFormatter="%04d"
        app:dsb_max="1000"
        app:dsb_min="1" />
</RelativeLayout>

TestActivity.java

public class TestActivity extends BaseActivity {

    private DiscreteSeekBar mDiscreteSeekBar;

    @Override
    protected int getLayoutResource() {
        return R.layout.activity_test;
    }

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        mDiscreteSeekBar = (DiscreteSeekBar) findViewById(R.id.discrete3);
        mDiscreteSeekBar.setVisibility(View.VISIBLE);
    }
}

The bubble can't be seen for this condition. No matter whether I set android:visibility="gone/invisible"

When I remove the code from the xml file, the bubble is back.