`<SeekBar
    android:id="@+id/seekbar"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_margin="10dp"
    android:max="100"
    android:progress="30">
</SeekBar>`

seekBarWidth = seekBar.getMeasuredWidth();
seekBarWidth = seekBar.getWidth();