iOS-雷达图（RadarChart）

前言：最近喜欢上封装一些东西，一来提升自己的封装能力，二来为以后的复用提供便利

功能如下：

• 可设置不超过20个元素的雷达图
• 文字可点击
• 分割值可显示

来看下效果图

Snip20181226_5.png

1.如何使用

直接看代码，使用起来非常简单。

    NSMutableArray *items = [NSMutableArray array];
    NSArray *values = @[@8,@5,@7,@3,@6];
    NSArray *descs = @[@"苹果",@"香蕉",@"花生",@"橙子",@"车厘子"];
    for (int i = 0; i < values.count; i++) {
        
        GBRadarChartDataItem *item = [GBRadarChartDataItem dataItemWithValue:[values[i] floatValue] description:descs[i]];
        [items addObject:item];
    }

    GBRadarChart *radarChart = [[GBRadarChart alloc] initWithFrame:CGRectMake(0, 100, CGRectGetWidth(self.view.bounds), 400) items:items valueDivider:2];
    radarChart.isShowGraduation = YES;
    [radarChart strokeChart];
    [self.view addSubview:radarChart];

2.看下源代码，了解一下实现过程

首先是.h中的属性和方法

@interface GBRadarChart : UIView

/**
 初始化图表

 @param frame frame
 @param items 模型数组
 @param unitValue 均分值
 @return 对象
 */
- (id)initWithFrame:(CGRect)frame items:(NSArray <GBRadarChartDataItem *> *)items valueDivider:(CGFloat)unitValue;

/** 绘制图表 */
- (void)strokeChart;

/**
 更新图表
 
 @param chartData 模型数组
 */
- (void)updateChartWithChartData:(NSArray *)chartData;

/** Array of `RadarChartDataItem` objects, one for each corner. */
@property (nonatomic) NSArray <GBRadarChartDataItem *> *chartData;
/** The unit of this chart ,default is 1 */
@property (nonatomic) CGFloat valueDivider;
/** The maximum for the range of values to display on the chart */
@property (nonatomic) CGFloat maxValue;
/** Default is gray. */
@property (nonatomic) UIColor *webColor;
/** Default is green , with an alpha of 0.7 */
@property (nonatomic) UIColor *plotFillColor;
/** Default is green*/
@property (nonatomic) UIColor *plotStrokeColor;
/** Default is black */
@property (nonatomic) UIColor *fontColor;
/** Default is orange */
@property (nonatomic) UIColor *graduationColor;
/** Default is 12 */
@property (nonatomic) CGFloat fontSize;
/** Tap the label will display detail value ,default is YES. */
@property (nonatomic, assign) BOOL isLabelTouchable;
/** is show graduation on the chart ,default is NO. */
@property (nonatomic, assign) BOOL isShowGraduation;
/** is display animated, default is YES */
@property (nonatomic, assign) BOOL displayAnimated;

@end

.m中代码就不粘贴，最后直接上demo吧
传送门：RadarChartDemo
大家有什么不理解的或者好的意见，评论回复吧~~~