Github地址 https://github.com/zhangxiaomeng1/XMLineChartView
采用繼承的方法李请，寫了個基類厉熟，导盅，重寫- (void)drawRect:(CGRect)rect 方法揍瑟，setNeedsDisplay 調(diào)用drawRect方法；
-
(void)drawline:(CGContextRef)context
startPoint:(CGPoint)startPoint stopPoint:(CGPoint)stopPoint color:(UIColor *)color lineWidth:(CGFloat)lineWitdth; (void)drawLabelPrice:(CGContextRef)context;
//高亮狀態(tài)滑動
-
(void)drawHighlighted:(CGContextRef)context
point:(CGPoint)point idex:(NSInteger)idex value:(id)value color:(UIColor *)color lineWidth:(CGFloat)lineWidth; -
(void)drawLabel:(CGContextRef)context
attributesText:(NSAttributedString *)attributesText
rect:(CGRect)rect;
//畫柱狀圖
-
(void)drawRect:(CGContextRef)context
rect:(CGRect)rect color:(UIColor*)color; -
(void)drawGridBackground:(CGContextRef)context
rect:(CGRect)rect;
