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效果图如下:
1、封装类
.h
#define XYQColor(r, g, b) [UIColor colorWithRed:(r)/255.0 green:(g)/255.0 blue:(b)/255.0 alpha:1.0] #define XYQRandomColor XYQColor(arc4random_uniform(256), arc4random_uniform(256), arc4random_uniform(256)) #define MARGIN 30 // 坐标轴与画布间距 #define Y_EVERY_MARGIN 20 // y轴每一个值的间隔数 #import// 线条类型 typedef NS_ENUM(NSInteger, LineType) { LineType_Straight, // 折线 LineType_Curve // 曲线 }; @interface BezierCurveView : UIView //初始化画布 +(instancetype)initWithFrame:(CGRect)frame; //画多根折线图 -(void)drawMoreLineChartViewWithX_Value_Names:(NSMutableArray *)x_names TargetValues:(NSMutableArray *)targetValues LineType:(LineType) lineType; @end
.m
#import "BezierCurveView.h" static CGRect myFrame; @interface BezierCurveView () @end
@implementation BezierCurveView //初始化画布 +(instancetype)initWithFrame:(CGRect)frame{ BezierCurveView *bezierCurveView = [[BezierCurveView alloc]init]; bezierCurveView.frame = frame; //背景视图 UIView *backView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, frame.size.width, frame.size.height)]; backView.backgroundColor = [UIColor clearColor]; [bezierCurveView addSubview:backView]; myFrame = frame; return bezierCurveView; }
/** * 画坐标轴 */ -(void)drawXYLine:(NSMutableArray *)x_names{ UIBezierPath *path = [UIBezierPath bezierPath]; //1.Y轴、X轴的直线 [path moveToPoint:CGPointMake(MARGIN, CGRectGetHeight(myFrame)-MARGIN)]; [path addLineToPoint:CGPointMake(MARGIN, MARGIN)]; [path moveToPoint:CGPointMake(MARGIN, CGRectGetHeight(myFrame)-MARGIN)]; [path addLineToPoint:CGPointMake(CGRectGetWidth(myFrame), CGRectGetHeight(myFrame)-MARGIN)]; // //2.添加箭头 // [path moveToPoint:CGPointMake(MARGIN, MARGIN)]; // [path addLineToPoint:CGPointMake(MARGIN-5, MARGIN+5)]; // [path moveToPoint:CGPointMake(MARGIN, MARGIN)]; // [path addLineToPoint:CGPointMake(MARGIN+5, MARGIN+5)]; // // [path moveToPoint:CGPointMake(CGRectGetWidth(myFrame), CGRectGetHeight(myFrame)-MARGIN)]; // [path addLineToPoint:CGPointMake(CGRectGetWidth(myFrame)-5, CGRectGetHeight(myFrame)-MARGIN-5)]; // [path moveToPoint:CGPointMake(CGRectGetWidth(myFrame), CGRectGetHeight(myFrame)-MARGIN)]; // [path addLineToPoint:CGPointMake(CGRectGetWidth(myFrame)-5, CGRectGetHeight(myFrame)-MARGIN+5)]; //3.添加索引格 //X轴 for (int i=0; i /** * 画多根折线图 */ -(void)drawMoreLineChartViewWithX_Value_Names:(NSMutableArray *)x_names TargetValues:(NSMutableArray *)targetValues LineType:(LineType) lineType{ //1.画坐标轴 [self drawXYLine:x_names]; for (int j=0; j2、调用
#define SCREEN_W [UIScreen mainScreen].bounds.size.width #define SCREEN_H [UIScreen mainScreen].bounds.size.height//1.初始化 _bezierView = [BezierCurveView initWithFrame:CGRectMake(30, 30, SCREEN_W-60, 280)]; _bezierView.center = self.view.center; [self.view addSubview:_bezierView]; // 多根折线图 [_bezierView drawMoreLineChartViewWithX_Value_Names:(NSMutableArray *)@[@"语文",@"数学",@"英语",@"物理",@"化学",@"生物",@"政治",@"历史",@"地理"] TargetValues:(NSMutableArray *)@[@[@60,@20,@50,@30,@90,@30,@100,@70, @20],@[@20,@40,@20,@50,@30,@90,@30,@100,@70],@[@10,@30,@40,@70,@50,@30,@20,@10,@80]] LineType:LineType_Straight];关于“iOS如何实现多条折线图封装”这篇文章就分享到这里了,希望以上内容可以对大家有一定的帮助,使各位可以学到更多知识,如果觉得文章不错,请把它分享出去让更多的人看到。
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