Custom seek-bar like Circle (pie chart) using bitmap.

Image may be NSFW.
Clik here to view.

privateclassProgressViewextendsView{privateBitmap bgBitmap;privateBitmap fgBitmap;privateRectF fullRect =newRectF();privatePath clipPath =newPath();publicProgressView(Context context){super(context);
        bgBitmap =BitmapFactory.decodeResource(
                                   context.getResources(), R.drawable.bg);
        fgBitmap =BitmapFactory.decodeResource(
                                   context.getResources(), R.drawable.fg);}@Overridepublicvoid onDraw(Canvas c){
        fullRect.right = getWidth();
        fullRect.bottom = getHeight();

        c.drawBitmap(bgBitmap,null, fullRect,null);float angle =SystemClock.uptimeMillis()%3600/10.0f;

        clipPath.reset();
        clipPath.setLastPoint(getWidth()/2, getHeight()/2);
        clipPath.lineTo(getWidth()/2, getHeight());
        clipPath.arcTo(fullRect,-90, angle);
        clipPath.lineTo(getWidth()/2, getHeight()/2);
        c.clipPath(clipPath);

        c.drawBitmap(fgBitmap,null, fullRect,null);

        invalidate();}}

also we can achieved like as seek-bar on touch event of this custom view.

@Override
public boolean onTouchEvent(MotionEvent event) {

int touchX = (int) event.getX();

int touchY = (int) event.getY();

if (outerCircle == null) {
 return true; // ignore all events until the canvas is drawn
}

float x1 = bgBitmap.getWidth(), x2 = bgBitmap.getHeight(), y1 = bgBitmap
    .getWidth(), y2 = bgBitmap.getHeight();
if ((touchX <= x1 && touchX <= x2)
  && (touchY <= y1 && touchY <= y2)) {
int angle = pointToAngle(touchX, touchY);
// model.rotate(Integer.valueOf(""+Math.round((angle / 3.6))));
angle = 360 + angle - startAngle;
int angleX2 = angle * 2;
angleX2 = roundToNearest15(angleX2);
if (angleX2 > 720) {
 angleX2 = angleX2 - 720; // avoid mod because we prefer 720 over
 }
 
 setMinutes(angleX2);
model.rotate(Integer.valueOf("" + Math.round((angleX2 / 7.2))));
 return true;
} else {
 return false;
 }
}