You also need to update the variables upx and upy in your ACTION_MOVE case block:
case MotionEvent.ACTION_MOVE: * **upx = event.getX();* * upy = event.getY();* double temp = Math.pow((upx - downx), 2) + Math.pow((upy - downy), 2); float radius = (float) Math.sqrt(temp) / 2; canvas.drawCircle(downx, downy, radius, paint); Log.d(TAG, "DRAG"); break; On Friday, February 15, 2013 7:25:26 AM UTC-6, Numair Qadir wrote: > > Greetings, > I'm trying to draw a circle using onTouch event. What it should do is get > the coordinates where screen is touched(ACTION_DOWN), and where touch is > lift up(ACTION_UP). For drawing circles we have > canvas.drawCircle(x,y,radius,paint); ..... Now radius should be equal to > the area where user has lift the touch up(ACTION_UP)... It is not drawing > like that.. Here is my code .. > > *case MotionEvent.ACTION_DOWN:* > * downx = event.getX();* > * downy = event.getY();* > * Log.d(TAG, "DOWN");* > * break;* > * case MotionEvent.ACTION_UP:* > * upx = event.getX();* > * upy = event.getY();* > * choosenImageView.invalidate(); > * > * mode = NONE;* > * Log.d(TAG, "mode=NONE");* > * break;* > * > * > * case MotionEvent.ACTION_MOVE:* > * double temp = Math.pow((upx - downx), 2)* > * + Math.pow((upy - downy), 2);* > * float radius = (float) Math.sqrt(temp) / 2;* > * canvas.drawCircle(downx, downy, radius, paint);* > * Log.d(TAG, "DRAG");* > * break;* > > Can any one help me??? Thanks in advance > -- -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en --- You received this message because you are subscribed to the Google Groups "Android Developers" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/groups/opt_out.
