public int getMax() {
        return mMax;
    }
Sets the maximum value for this DiscreteSeekBar
if the supplied argument is smaller than the Current MIN value,
the MIN value will be set to MAX-1
<p/>
<p>
Also if the current progress is out of the new range, it will be set to MIN
</p>

@param max
@see #setMin(int)
@see #setProgress(int)
app/src/main/java/com/duan/musicoco/view/discreteseekbar/DiscreteSeekBar.java