title: How to get rid of this "points" between my lines when I am drawing?
body: <p>is there an easy way to not draw this points in my lines?<br>
  I don't know why this points are there because i never release my finger from screen during drawing of a line.
  <img src="https://i.stack.imgur.com/m8Xpn.png" alt="enter image description here"></p>
  
  <p>I got the code from a drawing example.</p>
  
  <pre><code>// draw a line
  - (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event {
  
  mouseSwiped = YES;
  UITouch *touch = [touches anyObject];   
  CGPoint currentPoint = [touch locationInView:self.view];
  currentPoint.y -= 0; // 20 only for 'kCGLineCapRound'
  UIGraphicsBeginImageContext(self.view.frame.size);
  //Albert Renshaw - Apps4Life
  [drawImage.image drawInRect:CGRectMake(0, 0, drawImage.frame.size.width, drawImage.frame.size.height)]; //originally self.frame.size.width, self.frame.size.height)];
  CGContextSetLineCap(UIGraphicsGetCurrentContext(), kCGLineCapRound); //kCGLineCapSquare, kCGLineCapButt, kCGLineCapRound
  CGContextSetLineWidth(UIGraphicsGetCurrentContext(), brushSize); // for size
  CGContextSetRGBStrokeColor(UIGraphicsGetCurrentContext(), r, g, b, alpha); //values for R, G, B, and Alpha
  CGContextBeginPath(UIGraphicsGetCurrentContext());
  CGContextMoveToPoint(UIGraphicsGetCurrentContext(), lastPoint.x, lastPoint.y);
  CGContextAddLineToPoint(UIGraphicsGetCurrentContext(), currentPoint.x, currentPoint.y);
  CGContextStrokePath(UIGraphicsGetCurrentContext());
  drawImage.image = UIGraphicsGetImageFromCurrentImageContext();
  UIGraphicsEndImageContext();
  
  lastPoint = currentPoint;
  
  mouseMoved++;
  
  if (mouseMoved == 10) {
      mouseMoved = 0;
  }
  
      }
  
      - (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event {
  
  
  //Draw a dot
  if(!mouseSwiped) {
  
      UIGraphicsBeginImageContext(self.view.frame.size);
      [drawImage.image drawInRect:CGRectMake(0, 0, drawImage.frame.size.width, drawImage.frame.size.height)]; //originally self.frame.size.width, self.frame.size.height)];
      CGContextSetLineCap(UIGraphicsGetCurrentContext(), kCGLineCapRound); //kCGLineCapSquare, kCGLineCapButt, kCGLineCapRound
      CGContextSetLineWidth(UIGraphicsGetCurrentContext(), brushSize);
      CGContextSetRGBStrokeColor(UIGraphicsGetCurrentContext(), r, g, b, alpha);
      CGContextMoveToPoint(UIGraphicsGetCurrentContext(), lastPoint.x, lastPoint.y);
      CGContextAddLineToPoint(UIGraphicsGetCurrentContext(), lastPoint.x, lastPoint.y);
      CGContextStrokePath(UIGraphicsGetCurrentContext());
      CGContextFlush(UIGraphicsGetCurrentContext());
      drawImage.image = UIGraphicsGetImageFromCurrentImageContext();
      UIGraphicsEndImageContext();
  }
      }
  </code></pre>
  
  <p>This is the final version with unique alpha, color, brushSize for every line:</p>
  
  <pre><code>- (void) updateDrawingBoard 
  {
  UIGraphicsBeginImageContext(self.drawImage.bounds.size);
  
  for ( NSDictionary *dict in paths ) {
  
     UIBezierPath *p = (UIBezierPath*)[dict objectForKey:@"path"];
     p.lineWidth = [[dict objectForKey:@"size"]floatValue];
     [[UIColor colorWithRed:[[dict objectForKey:@"red"]floatValue] 
                       green:[[dict objectForKey:@"green"]floatValue] 
                        blue:[[dict objectForKey:@"blue"]floatValue] 
                       alpha:[[dict objectForKey:@"alpha"]floatValue]] setStroke];
    [p stroke];
  }
  [[UIColor colorWithRed:r green:g blue:b alpha:alpha] setStroke];
  [path stroke];
  
  self.drawImage.image = UIGraphicsGetImageFromCurrentImageContext();
  UIGraphicsEndImageContext();
  }
  
  - (void) touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
  CGPoint touchPoint = [[touches anyObject] locationInView:self.drawImage];
  
  path = [[UIBezierPath bezierPath] retain];
  path.lineCapStyle = kCGLineCapRound;
  path.lineJoinStyle = kCGLineJoinBevel;
  path.lineWidth = brushSize;
  [path moveToPoint:touchPoint];
  
  [self updateDrawingBoard];
  }
  
  - (void) touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event {
  CGPoint touchPoint = [[touches anyObject] locationInView:self.drawImage];
  
  [path addLineToPoint:touchPoint];
  
  NSDictionary   *dict = [NSDictionary dictionaryWithObjectsAndKeys:
                          path,@"path",
                          [NSNumber numberWithFloat:r], @"red", 
                          [NSNumber numberWithFloat:g], @"green", 
                          [NSNumber numberWithFloat:b], @"blue", 
                          [NSNumber numberWithFloat:alpha], @"alpha", 
                          [NSNumber numberWithFloat:brushSize], @"size", nil];
  [paths addObject:dict];
  [path release];
  path = nil;
  
  [self updateDrawingBoard];
  }
  
  - (void) touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event {
  CGPoint touchPoint = [[touches anyObject] locationInView:self.drawImage];
  
  [path addLineToPoint:touchPoint];
  
  [self updateDrawingBoard];
  }
  </code></pre>