1，ios 為UIView 新增鋸齒邊
主要是算好鋸齒的點在View上的位置，然後進行填充就好了，程式碼如下：

 UIBezierPath *path = [UIBezierPath bezierPath];
            path.lineWidth = borderWidth;
            NSInteger x = 0;
            NSInteger y = (borderPosition == kBorderPositionTop) ? borderWidth : CGRectGetHeight(self.frame) - borderWidth;
            [path moveToPoint:CGPointMake(x, y)];
            NSUInteger verticalDisplacement = self
 
.jaggedEdgeVerticalVertexDistance ?: DefaultJaggedEdgeVerticalVertexDistance;
            NSUInteger horizontalDisplacement = self.jaggedEdgeHorizontalVertexDistance ?: DefaultJaggedEdgeHorizontalVertexDistance;

            verticalDisplacement *= (borderPosition == kBorderPositionTop) ? +1 : -1;

            BOOL
 
 shouldMoveUp = YES;
            while (x <= CGRectGetWidth(self.frame)) {
                x += horizontalDisplacement;
                if (type == kCurveBorderTypeJagged) {
                    if (shouldMoveUp) {
                        y += verticalDisplacement;
                    }
                    else
 

                    {
                        y -= verticalDisplacement;
                    }
                    [path addLineToPoint:CGPointMake(x, y)];
                }else if (type == kCurveBorderTypeCurve){

                    NSInteger newY = y+verticalDisplacement;
                    if (shouldMoveUp)
                    {
                        newY += verticalDisplacement;
                    }
                    else
                    {
                        newY -= verticalDisplacement;
                    }
                    [path addQuadCurveToPoint:CGPointMake(x, y+verticalDisplacement) controlPoint:CGPointMake(x-horizontalDisplacement/2.0, newY)];
                }
                shouldMoveUp = !shouldMoveUp;
            }
            CGFloat offSet = 2 * borderWidth;
            x = CGRectGetWidth(self.frame) + offSet;
            y = (borderPosition == kBorderPositionTop) ? -offSet : CGRectGetHeight(self.frame) + offSet;
            [path addLineToPoint:CGPointMake(x,y)];
            x = -offSet;
            [path addLineToPoint:CGPointMake(x, y)];
            [strokeColor setStroke];
            [self drawBezierPath:path];

這裡最主要的是要判斷給那條邊新增鋸齒，每條邊點的位置計算會有所不同。
2，ios 為UIView 新增波浪線邊
這個和鋸齒邊的區別是新增點的方式不同和計算點的位置不一樣，

[path addQuadCurveToPoint:CGPointMake(x, y+verticalDisplacement) controlPoint:CGPointMake(x-horizontalDisplacement/2.0, newY)];

多說無益，直接上demodemo下載地址