Why is the text moving in SeekBar?

[chanisef]

I redesigned SeekBar because over the thumb crawl, the text changes its position with the podium, but it also changes its position vis-à-vis the shelf. How do you fix that I missed?

@SuppressLint("AppCompatCustomView")
public class SuperSeekBar extends SeekBar  {
   Paint p;
   Rect rect;
public SuperSeekBar(Context context) {
    super(context);
    p = new Paint();
}

public SuperSeekBar(Context context, AttributeSet attrs) {
    super(context, attrs);
    p = new Paint();
    setOnSeekBarChangeListener(this);
}

public SuperSeekBar(Context context, AttributeSet attrs, int defStyleAttr) {
    super(context, attrs, defStyleAttr);
    p = new Paint();
}

public SuperSeekBar(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
    super(context, attrs, defStyleAttr, defStyleRes);
    p = new Paint();
}

@Override
protected void onSizeChanged(int w, int h, int oldw, int oldh) {
    super.onSizeChanged(w, h, oldw, oldh);
    Log.i("tag","");
}

@Override
protected void onDraw(Canvas c) {
    super.onDraw(c);
    float thumb_x = ((float)this.getProgress()/(float)this.getMax() ) *(float)this.getWidth();
    float middle = (float)this.getHeight()/2.0f;
    p.setColor(Color.BLUE);
    c.drawText("TEXT", thumb_x, middle, p );
}

}

[emerson]

On another point on Stackowerflow found the answer: https://stackoverflow.com/questions/20493577/android-seekbar-thumb-position-in-pixel

 float middle = (float)this.getHeight()/2.0f;
    float thumbPos = (float)getPaddingLeft()
            + width
            * (float) getProgress()
            / (float) getMax();
    p.setColor(Color.BLUE);
    c.drawText("TEXT", thumbPos, middle, p );