用 Charts 绘图表框架制作统计图

@interface LineViewController ()<ChartViewDelegate>
@property (nonatomic,strong) LineChartView *LineChartView;
@property (nonatomic, strong) LineChartData *data;
@end

@implementation LineViewController

- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view.

self.view.backgroundColor = [UIColor colorWithRed:230/255.0f green:253/255.0f blue:253/255.0f alpha:1];

//title
UILabel *title_label = [[UILabel alloc] init];
title_label.text = @"Line Chart";
title_label.font = [UIFont systemFontOfSize:45];
title_label.textColor = [UIColor brownColor];
title_label.textAlignment = NSTextAlignmentCenter;
[self.view addSubview:title_label];
[title_label mas_makeConstraints:^(MASConstraintMaker *make) {
make.size.mas_equalTo(CGSizeMake(260, 50));
make.centerX.equalTo(self.view.mas_centerX);
make.centerY.equalTo(self.view.mas_centerY).offset(-200);
}];

//updateData btn
UIButton *display_btn = [[UIButton alloc] init];
[display_btn setTitle:@"updateData" forState:UIControlStateNormal];
[display_btn setTitleColor:[UIColor blueColor] forState:UIControlStateNormal];
display_btn.titleLabel.textAlignment = NSTextAlignmentCenter;
[self.view addSubview:display_btn];
[display_btn mas_makeConstraints:^(MASConstraintMaker *make) {
make.size.mas_equalTo(CGSizeMake(200, 50));
make.centerX.equalTo(self.view.mas_centerX);
make.centerY.equalTo(self.view.mas_centerY).offset(240);
}];
[display_btn addTarget:self action:@selector(updateData) forControlEvents:UIControlEventTouchUpInside];

//添加LineChartView
self.LineChartView = [[LineChartView alloc] init];
self.LineChartView.delegate = self;//设置代理
[self.view addSubview:self.LineChartView];
[self.LineChartView mas_makeConstraints:^(MASConstraintMaker *make) {
make.size.mas_equalTo(CGSizeMake(self.view.bounds.size.width-20, 300));
make.center.mas_equalTo(self.view);
}];

//基本样式
self.LineChartView.backgroundColor =  [UIColor colorWithRed:230/255.0f green:253/255.0f blue:253/255.0f alpha:1];
self.LineChartView.noDataText = @"暂无数据";
//交互样式
self.LineChartView.scaleYEnabled = NO;//取消Y轴缩放
self.LineChartView.doubleTapToZoomEnabled = NO;//取消双击缩放
self.LineChartView.dragEnabled = YES;//启用拖拽图标
self.LineChartView.dragDecelerationEnabled = YES;//拖拽后是否有惯性效果
self.LineChartView.dragDecelerationFrictionCoef = 0.9;//拖拽后惯性效果的摩擦系数(0~1)，数值越小，惯性越不明显
//X轴样式
ChartXAxis *xAxis = self.LineChartView.xAxis;
xAxis.axisLineWidth = 1.0/[UIScreen mainScreen].scale;//设置X轴线宽
xAxis.labelPosition = XAxisLabelPositionBottom;//X轴的显示位置，默认是显示在上面的
xAxis.drawGridLinesEnabled = NO;//不绘制网格线
xAxis.spaceBetweenLabels = 4;//设置label间隔
xAxis.labelTextColor = [self colorWithHexString:@"#057748"];//label文字颜色
//Y轴样式
self.LineChartView.rightAxis.enabled = NO;//不绘制右边轴
ChartYAxis *leftAxis = self.LineChartView.leftAxis;//获取左边Y轴
leftAxis.labelCount = 5;//Y轴label数量，数值不一定，如果forceLabelsEnabled等于YES, 则强制绘制制定数量的label, 但是可能不平均
leftAxis.forceLabelsEnabled = NO;//不强制绘制指定数量的label
leftAxis.showOnlyMinMaxEnabled = NO;//是否只显示最大值和最小值
leftAxis.axisMinValue = 0;//设置Y轴的最小值
leftAxis.startAtZeroEnabled = YES;//从0开始绘制
leftAxis.axisMaxValue = 105;//设置Y轴的最大值
leftAxis.inverted = NO;//是否将Y轴进行上下翻转
leftAxis.axisLineWidth = 1.0/[UIScreen mainScreen].scale;//Y轴线宽
leftAxis.axisLineColor = [UIColor blackColor];//Y轴颜色
leftAxis.valueFormatter = [[NSNumberFormatter alloc] init];//自定义格式
leftAxis.valueFormatter.positiveSuffix = @" $";//数字后缀单位
leftAxis.labelPosition = YAxisLabelPositionOutsideChart;//label位置
leftAxis.labelTextColor = [self colorWithHexString:@"#057748"];//文字颜色
leftAxis.labelFont = [UIFont systemFontOfSize:10.0f];//文字字体
//网格线样式
leftAxis.gridLineDashLengths = @[@3.0f, @3.0f];//设置虚线样式的网格线
leftAxis.gridColor = [UIColor colorWithRed:200/255.0f green:200/255.0f blue:200/255.0f alpha:1];//网格线颜色
leftAxis.gridAntialiasEnabled = YES;//开启抗锯齿
//添加限制线
ChartLimitLine *limitLine = [[ChartLimitLine alloc] initWithLimit:80 label:@"限制线"];
limitLine.lineWidth = 2;
limitLine.lineColor = [UIColor greenColor];
limitLine.lineDashLengths = @[@5.0f, @5.0f];//虚线样式
limitLine.labelPosition = ChartLimitLabelPositionRightTop;//位置
limitLine.valueTextColor = [self colorWithHexString:@"#057748"];//label文字颜色
limitLine.valueFont = [UIFont systemFontOfSize:12];//label字体
[leftAxis addLimitLine:limitLine];//添加到Y轴上
leftAxis.drawLimitLinesBehindDataEnabled = YES;//设置限制线绘制在折线图的后面
//描述及图例样式
[self.LineChartView setDescriptionText:@"折线图"];
[self.LineChartView setDescriptionTextColor:[UIColor darkGrayColor]];
self.LineChartView.legend.form = ChartLegendFormLine;
self.LineChartView.legend.formSize = 30;
self.LineChartView.legend.textColor = [UIColor darkGrayColor];

self.data = [self setData];
self.LineChartView.data = self.data;
[self.LineChartView animateWithXAxisDuration:1.0f];

}

-(void)updateData{
self.data = [self setData];
self.LineChartView.data = self.data;
[self.LineChartView animateWithXAxisDuration:2.0f];
}
//为折线图设置数据
- (LineChartData *)setData{

int xVals_count = 12;//X轴上要显示多少条数据
double maxYVal = 100;//Y轴的最大值

//X轴上面需要显示的数据
NSMutableArray *xVals = [[NSMutableArray alloc] init];
for (int i = 0; i < xVals_count; i++) {
[xVals addObject:[NSString stringWithFormat:@"%d月", i+1]];
}

//对应Y轴上面需要显示的数据
NSMutableArray *yVals = [[NSMutableArray alloc] init];
for (int i = 0; i < xVals_count; i++) {
double mult = maxYVal + 1;
double val = (double)(arc4random_uniform(mult));
ChartDataEntry *entry = [[ChartDataEntry alloc] initWithValue:val xIndex:i];
[yVals addObject:entry];
}

LineChartDataSet *set1 = nil;
if (self.LineChartView.data.dataSetCount > 0) {
LineChartData *data = (LineChartData *)self.LineChartView.data;
set1 = (LineChartDataSet *)data.dataSets[0];
set1.yVals = yVals;
return data;
}else{
//创建LineChartDataSet对象
set1 = [[LineChartDataSet alloc] initWithYVals:yVals label:@"lineName"];
//设置折线的样式
set1.lineWidth = 1.0/[UIScreen mainScreen].scale;//折线宽度
set1.drawValuesEnabled = YES;//是否在拐点处显示数据
set1.valueColors = @[[UIColor brownColor]];//折线拐点处显示数据的颜色
[set1 setColor:[self colorWithHexString:@"#007FFF"]];//折线颜色
set1.drawSteppedEnabled = NO;//是否开启绘制阶梯样式的折线图
//折线拐点样式
set1.drawCirclesEnabled = NO;//是否绘制拐点
set1.circleRadius = 4.0f;//拐点半径
set1.circleColors = @[[UIColor redColor], [UIColor greenColor]];//拐点颜色
//拐点中间的空心样式
set1.drawCircleHoleEnabled = YES;//是否绘制中间的空心
set1.circleHoleRadius = 2.0f;//空心的半径
set1.circleHoleColor = [UIColor blackColor];//空心的颜色
//折线的颜色填充样式
//第一种填充样式:单色填充
//        set1.drawFilledEnabled = YES;//是否填充颜色
//        set1.fillColor = [UIColor redColor];//填充颜色
//        set1.fillAlpha = 0.3;//填充颜色的透明度
//第二种填充样式:渐变填充
set1.drawFilledEnabled = YES;//是否填充颜色
NSArray *gradientColors = @[(id)[ChartColorTemplates colorFromString:@"#FFFFFFFF"].CGColor,
(id)[ChartColorTemplates colorFromString:@"#FF007FFF"].CGColor];
CGGradientRef gradientRef = CGGradientCreateWithColors(nil, (CFArrayRef)gradientColors, nil);
set1.fillAlpha = 0.3f;//透明度
set1.fill = [ChartFill fillWithLinearGradient:gradientRef angle:90.0f];//赋值填充颜色对象
CGGradientRelease(gradientRef);//释放gradientRef

//点击选中拐点的交互样式
set1.highlightEnabled = YES;//选中拐点,是否开启高亮效果(显示十字线)
set1.highlightColor = [self colorWithHexString:@"#c83c23"];//点击选中拐点的十字线的颜色
set1.highlightLineWidth = 1.0/[UIScreen mainScreen].scale;//十字线宽度
set1.highlightLineDashLengths = @[@5, @5];//十字线的虚线样式

//将 LineChartDataSet 对象放入数组中
NSMutableArray *dataSets = [[NSMutableArray alloc] init];
[dataSets addObject:set1];

//添加第二个LineChartDataSet对象
//        LineChartDataSet *set2 = [set1 copy];
//        NSMutableArray *yVals2 = [[NSMutableArray alloc] init];
//        for (int i = 0; i < xVals_count; i++) {
//            double mult = maxYVal + 1;
//            double val = (double)(arc4random_uniform(mult));
//            ChartDataEntry *entry = [[ChartDataEntry alloc] initWithValue:val xIndex:i];
//            [yVals2 addObject:entry];
//        }
//        set2.yVals = yVals2;
//        [set2 setColor:[UIColor redColor]];
//        set2.drawFilledEnabled = YES;//是否填充颜色
//        set2.fillColor = [UIColor redColor];//填充颜色
//        set2.fillAlpha = 0.1;//填充颜色的透明度
//        [dataSets addObject:set2];

//创建 LineChartData 对象, 此对象就是lineChartView需要最终数据对象
LineChartData *data = [[LineChartData alloc] initWithXVals:xVals dataSets:dataSets];
[data setValueFont:[UIFont fontWithName:@"HelveticaNeue-Light" size:8.f]];//文字字体
[data setValueTextColor:[UIColor grayColor]];//文字颜色
NSNumberFormatter *formatter = [[NSNumberFormatter alloc] init];
//自定义数据显示格式
[formatter setNumberStyle:NSNumberFormatterDecimalStyle];
[formatter setPositiveFormat:@"#0.0"];
[data setValueFormatter:formatter];

return data;
}

}

#pragma mark - ChartViewDelegate

//点击选中折线拐点时回调
- (void)chartValueSelected:(ChartViewBase * _Nonnull)chartView entry:(ChartDataEntry * _Nonnull)entry dataSetIndex:(NSInteger)dataSetIndex highlight:(ChartHighlight * _Nonnull)highlight{
NSLog(@"---chartValueSelected---value: %g", entry.value);
}
//没有选中折线拐点时回调
- (void)chartValueNothingSelected:(ChartViewBase * _Nonnull)chartView{
NSLog(@"---chartValueNothingSelected---");
}
//放大折线图时回调
- (void)chartScaled:(ChartViewBase * _Nonnull)chartView scaleX:(CGFloat)scaleX scaleY:(CGFloat)scaleY{
NSLog(@"---chartScaled---scaleX:%g, scaleY:%g", scaleX, scaleY);
}
//拖拽折线图时回调
- (void)chartTranslated:(ChartViewBase * _Nonnull)chartView dX:(CGFloat)dX dY:(CGFloat)dY{
NSLog(@"---chartTranslated---dX:%g, dY:%g", dX, dY);
}

- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}

//将十六进制颜色转换为 UIColor 对象
- (UIColor *)colorWithHexString:(NSString *)color{
NSString *cString = [[color stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]] uppercaseString];
// String should be 6 or 8 characters
if ([cString length] < 6) {
return [UIColor clearColor];
}
// strip "0X" or "#" if it appears
if ([cString hasPrefix:@"0X"])
cString = [cString substringFromIndex:2];
if ([cString hasPrefix:@"#"])
cString = [cString substringFromIndex:1];
if ([cString length] != 6)
return [UIColor clearColor];
// Separate into r, g, b substrings
NSRange range;
range.location = 0;
range.length = 2;
//r
NSString *rString = [cString substringWithRange:range];
//g
range.location = 2;
NSString *gString = [cString substringWithRange:range];
//b
range.location = 4;
NSString *bString = [cString substringWithRange:range];
// Scan values
unsigned int r, g, b;
[[NSScanner scannerWithString:rString] scanHexInt:&r];
[[NSScanner scannerWithString:gString] scanHexInt:&g];
[[NSScanner scannerWithString:bString] scanHexInt:&b];
return [UIColor colorWithRed:((float) r / 255.0f) green:((float) g / 255.0f) blue:((float) b / 255.0f) alpha:1.0f];
}
@end

#define BgColor [UIColor colorWithRed:230/255.0f green:253/255.0f blue:253/255.0f alpha:1]

@interface PieViewController ()

@property (nonatomic, strong) PieChartView *pieChartView;
@property (nonatomic, strong) PieChartData *data;
@end

@implementation PieViewController

- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
self.view.backgroundColor = BgColor;

//title
UILabel *title_label = [[UILabel alloc] init];
title_label.text = @"饼状图";
title_label.font = [UIFont systemFontOfSize:45];
title_label.textColor = [UIColor brownColor];
title_label.textAlignment = NSTextAlignmentCenter;
[self.view addSubview:title_label];
[title_label mas_makeConstraints:^(MASConstraintMaker *make) {
make.size.mas_equalTo(CGSizeMake(260, 50));
make.centerX.equalTo(self.view.mas_centerX);
make.centerY.equalTo(self.view.mas_centerY).offset(-200);
}];

//updateData btn
UIButton *display_btn = [[UIButton alloc] init];
[display_btn setTitle:@"updateData" forState:UIControlStateNormal];
[display_btn setTitleColor:[UIColor blueColor] forState:UIControlStateNormal];
display_btn.titleLabel.textAlignment = NSTextAlignmentCenter;
[self.view addSubview:display_btn];
[display_btn mas_makeConstraints:^(MASConstraintMaker *make) {
make.size.mas_equalTo(CGSizeMake(200, 50));
make.centerX.equalTo(self.view.mas_centerX);
make.centerY.equalTo(self.view.mas_centerY).offset(240);
}];
[display_btn addTarget:self action:@selector(updateData) forControlEvents:UIControlEventTouchUpInside];

//创建饼状图
self.pieChartView = [[PieChartView alloc] init];
self.pieChartView.backgroundColor = BgColor;
[self.view addSubview:self.pieChartView];
[self.pieChartView mas_makeConstraints:^(MASConstraintMaker *make) {
make.size.mas_equalTo(CGSizeMake(300, 300));
make.center.mas_equalTo(self.view);
}];
//基本样式
[self.pieChartView setExtraOffsetsWithLeft:15 top:0 right:15 bottom:0];//饼状图距离边缘的间隙
self.pieChartView.usePercentValuesEnabled = YES;//是否根据所提供的数据, 将显示数据转换为百分比格式
self.pieChartView.dragDecelerationEnabled = YES;//拖拽饼状图后是否有惯性效果
self.pieChartView.drawSliceTextEnabled = YES;//是否显示区块文本
//空心饼状图样式
self.pieChartView.drawHoleEnabled = NO;//饼状图是否是空心
self.pieChartView.holeRadiusPercent = 0.5;//空心半径占比
self.pieChartView.holeColor = [UIColor clearColor];//空心颜色
self.pieChartView.transparentCircleRadiusPercent = 0.52;//半透明空心半径占比
self.pieChartView.transparentCircleColor = [UIColor colorWithRed:210/255.0 green:145/255.0 blue:165/255.0 alpha:0.3];//半透明空心的颜色
//实心饼状图样式
//    self.pieChartView.drawHoleEnabled = NO;
//饼状图中间描述
if (self.pieChartView.isDrawHoleEnabled == YES) {
self.pieChartView.drawCenterTextEnabled = YES;//是否显示中间文字
//普通文本
//        self.pieChartView.centerText = @"饼状图";//中间文字
//富文本
NSMutableAttributedString *centerText = [[NSMutableAttributedString alloc] initWithString:@"饼状图"];
[centerText setAttributes:@{NSFontAttributeName: [UIFont boldSystemFontOfSize:16],
NSForegroundColorAttributeName: [UIColor orangeColor]}
range:NSMakeRange(0, centerText.length)];
self.pieChartView.centerAttributedText = centerText;
}
//饼状图描述
self.pieChartView.descriptionText = @"我是一个饼状图描述文字";
self.pieChartView.descriptionFont = [UIFont systemFontOfSize:10];
self.pieChartView.descriptionTextColor = [UIColor grayColor];
//饼状图图例
self.pieChartView.legend.maxSizePercent = 1;//图例在饼状图中的大小占比, 这会影响图例的宽高
self.pieChartView.legend.formToTextSpace = 5;//文本间隔
self.pieChartView.legend.font = [UIFont systemFontOfSize:10];//字体大小
self.pieChartView.legend.textColor = [UIColor grayColor];//字体颜色
self.pieChartView.legend.position = ChartLegendPositionBelowChartCenter;//图例在饼状图中的位置
self.pieChartView.legend.form = ChartLegendFormSquare;//图示样式: 方形、线条、圆形
self.pieChartView.legend.formSize = 12;//图示大小

//为饼状图提供数据
self.data = [self setData];
self.pieChartView.data = self.data;
//设置动画效果
[self.pieChartView animateWithXAxisDuration:1.0f easingOption:ChartEasingOptionEaseOutExpo];
}

- (void)updateData{
//为饼状图提供数据
self.data = [self setData];
self.pieChartView.data = self.data;
//设置动画效果
[self.pieChartView animateWithXAxisDuration:1.0f easingOption:ChartEasingOptionEaseOutExpo];
}

- (PieChartData *)setData{

double mult = 100;
int count = 5;//饼状图总共有几块组成

//每个区块的数据
NSMutableArray *yVals = [[NSMutableArray alloc] init];
for (int i = 0; i < count; i++) {
double randomVal = arc4random_uniform(mult + 1);
BarChartDataEntry *entry = [[BarChartDataEntry alloc] initWithValue:randomVal xIndex:i];
[yVals addObject:entry];
}

//每个区块的名称或描述
NSMutableArray *xVals = [[NSMutableArray alloc] init];
for (int i = 0; i < count; i++) {
NSString *title = [NSString stringWithFormat:@"part%d", i+1];
[xVals addObject:title];
}

//dataSet
PieChartDataSet *dataSet = [[PieChartDataSet alloc] initWithYVals:yVals label:@""];
dataSet.drawValuesEnabled = YES;//是否绘制显示数据
NSMutableArray *colors = [[NSMutableArray alloc] init];
[colors addObjectsFromArray:ChartColorTemplates.vordiplom];
[colors addObjectsFromArray:ChartColorTemplates.joyful];
[colors addObjectsFromArray:ChartColorTemplates.colorful];
[colors addObjectsFromArray:ChartColorTemplates.liberty];
[colors addObjectsFromArray:ChartColorTemplates.pastel];
[colors addObject:[UIColor colorWithRed:51/255.f green:181/255.f blue:229/255.f alpha:1.f]];
dataSet.colors = colors;//区块颜色
dataSet.sliceSpace = 3;//相邻区块之间的间距
dataSet.selectionShift = 8;//选中区块时, 放大的半径
dataSet.xValuePosition = PieChartValuePositionInsideSlice;//名称位置
dataSet.yValuePosition = PieChartValuePositionOutsideSlice;//数据位置
//数据与区块之间的用于指示的折线样式
dataSet.valueLinePart1OffsetPercentage = 0.85;//折线中第一段起始位置相对于区块的偏移量, 数值越大, 折线距离区块越远
dataSet.valueLinePart1Length = 0.5;//折线中第一段长度占比
dataSet.valueLinePart2Length = 0.4;//折线中第二段长度最大占比
dataSet.valueLineWidth = 1;//折线的粗细
dataSet.valueLineColor = [UIColor brownColor];//折线颜色

//data
PieChartData *data = [[PieChartData alloc] initWithXVals:xVals dataSet:dataSet];
NSNumberFormatter *formatter = [[NSNumberFormatter alloc] init];
formatter.numberStyle = NSNumberFormatterPercentStyle;
formatter.maximumFractionDigits = 0;//小数位数
formatter.multiplier = @1.f;
[data setValueFormatter:formatter];//设置显示数据格式
[data setValueTextColor:[UIColor brownColor]];
[data setValueFont:[UIFont systemFontOfSize:10]];

return data;
}

@end

#define BgColor [UIColor colorWithRed:230/255.0f green:253/255.0f blue:253/255.0f alpha:1]

@interface RadarViewController ()<ChartViewDelegate>

@property (nonatomic, strong) RadarChartView *radarChartView;
@property (nonatomic, strong) RadarChartData *data;

@end

@implementation RadarViewController

- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.

self.view.backgroundColor = BgColor;

//title
UILabel *title_label = [[UILabel alloc] init];
title_label.text = @"Radar Chart";
title_label.font = [UIFont systemFontOfSize:45];
title_label.textColor = [UIColor brownColor];
title_label.textAlignment = NSTextAlignmentCenter;
[self.view addSubview:title_label];
[title_label mas_makeConstraints:^(MASConstraintMaker *make) {
make.size.mas_equalTo(CGSizeMake(260, 50));
make.centerX.equalTo(self.view.mas_centerX);
make.centerY.equalTo(self.view.mas_centerY).offset(-200);
}];

//updateData btn
UIButton *display_btn = [[UIButton alloc] init];
[display_btn setTitle:@"updateData" forState:UIControlStateNormal];
[display_btn setTitleColor:[UIColor blueColor] forState:UIControlStateNormal];
display_btn.titleLabel.textAlignment = NSTextAlignmentCenter;
[self.view addSubview:display_btn];
[display_btn mas_makeConstraints:^(MASConstraintMaker *make) {
make.size.mas_equalTo(CGSizeMake(200, 50));
make.centerX.equalTo(self.view.mas_centerX);
make.centerY.equalTo(self.view.mas_centerY).offset(240);
}];
[display_btn addTarget:self action:@selector(updateData) forControlEvents:UIControlEventTouchUpInside];

//创建雷达图对象
self.radarChartView = [[RadarChartView alloc] init];
self.radarChartView.backgroundColor = BgColor;
[self.view addSubview:self.radarChartView];
[self.radarChartView mas_makeConstraints:^(MASConstraintMaker *make) {
make.size.mas_equalTo(CGSizeMake(300, 300));
make.center.mas_equalTo(self.view);
}];
self.radarChartView.delegate = self;
self.radarChartView.descriptionText = @"";//描述
self.radarChartView.rotationEnabled = YES;//是否允许转动
self.radarChartView.highlightPerTapEnabled = YES;//是否能被选中

//雷达图线条样式
self.radarChartView.webLineWidth = 0.5;//主干线线宽
self.radarChartView.webColor = [self colorWithHexString:@"#c2ccd0"];//主干线线宽
self.radarChartView.innerWebLineWidth = 0.375;//边线宽度
self.radarChartView.innerWebColor = [self colorWithHexString:@"#c2ccd0"];//边线颜色
self.radarChartView.webAlpha = 1;//透明度

//设置 xAxi
ChartXAxis *xAxis = self.radarChartView.xAxis;
xAxis.labelFont = [UIFont systemFontOfSize:15];//字体
xAxis.labelTextColor = [self colorWithHexString:@"#057748"];//颜色

//设置 yAxis
ChartYAxis *yAxis = self.radarChartView.yAxis;
yAxis.axisMinValue = 0.0;//最小值
yAxis.axisMaxValue = 150.0;//最大值
yAxis.drawLabelsEnabled = NO;//是否显示 label
yAxis.labelCount = 6;// label 个数
yAxis.labelFont = [UIFont systemFontOfSize:9];// label 字体
yAxis.labelTextColor = [UIColor lightGrayColor];// label 颜色

//为雷达图提供数据
self.data = [self setData];
self.radarChartView.data = self.data;
[self.radarChartView renderer];

//设置动画
[self.radarChartView animateWithYAxisDuration:0.1f];
}

//刷新数据
- (void)updateData{
self.data = [self setData];
self.radarChartView.data = self.data;
[self.radarChartView animateWithYAxisDuration:0.1f];
}

//创建数据
- (RadarChartData *)setData{

double mult = 100;
int count = 12;//维度的个数

//每个维度的名称或描述
NSMutableArray *xVals = [[NSMutableArray alloc] init];
for (int i = 0; i < count; i++) {
[xVals addObject:[NSString stringWithFormat:@"%d 月", i+1]];
}

//每个维度的数据
NSMutableArray *yVals1 = [[NSMutableArray alloc] init];
for (int i = 0; i < count; i++) {
double randomVal = arc4random_uniform(mult) + mult / 2;//产生 50~150 的随机数
ChartDataEntry *entry = [[ChartDataEntry alloc] initWithValue:randomVal xIndex:i];
[yVals1 addObject:entry];
}

RadarChartDataSet *set1 = [[RadarChartDataSet alloc] initWithYVals:yVals1 label:@"set 1"];
set1.lineWidth = 0.5;//数据折线线宽
[set1 setColor:[self colorWithHexString:@"#ff8936"]];//数据折线颜色
set1.drawFilledEnabled = YES;//是否填充颜色
set1.fillColor = [self colorWithHexString:@"#ff8936"];//填充颜色
set1.fillAlpha = 0.25;//填充透明度
set1.drawValuesEnabled = NO;//是否绘制显示数据
set1.valueFont = [UIFont systemFontOfSize:9];//字体
set1.valueTextColor = [UIColor grayColor];//颜色

//    NSMutableArray *yVals2 = [[NSMutableArray alloc] init];
//    for (int i = 0; i < count; i++) {
//        double randomVal = arc4random_uniform(mult) + mult / 2;//产生 50~150 的随机数
//        ChartDataEntry *entry = [[ChartDataEntry alloc] initWithValue:randomVal xIndex:i];
//        [yVals2 addObject:entry];
//    }
//    RadarChartDataSet *set2 = [[RadarChartDataSet alloc] initWithYVals:yVals2 label:@"set 2"];
//    set2.lineWidth = 0.5;//数据折线线宽
//    set2.drawFilledEnabled = YES;//是否填充颜色
//    [set2 setColor:[self colorWithHexString:@"#ff2d51"]];
//    set2.fillColor = [self colorWithHexString:@"#ff2d51"];
//    set2.fillAlpha = 0.25;//填充透明度
//    set2.drawValuesEnabled = NO;//是否绘制显示数据
//    set2.valueFont = [UIFont systemFontOfSize:9];//字体
//    set2.valueTextColor = [UIColor grayColor];//颜色

RadarChartData *data = [[RadarChartData alloc] initWithXVals:xVals dataSets:@[set1]];

return data;
}

- (void)chartValueSelected:(ChartViewBase * _Nonnull)chartView entry:(ChartDataEntry * _Nonnull)entry dataSetIndex:(NSInteger)dataSetIndex highlight:(ChartHighlight * _Nonnull)highlight{
NSLog(@"chartValueSelected");
}
- (void)chartValueNothingSelected:(ChartViewBase * _Nonnull)chartView{
NSLog(@"chartValueNothingSelected");
}
- (void)chartScaled:(ChartViewBase * _Nonnull)chartView scaleX:(CGFloat)scaleX scaleY:(CGFloat)scaleY{
NSLog(@"chartScaled");
}
- (void)chartTranslated:(ChartViewBase * _Nonnull)chartView dX:(CGFloat)dX dY:(CGFloat)dY{
NSLog(@"chartTranslated");
}

- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}

//将十六进制颜色转换为 UIColor 对象
- (UIColor *)colorWithHexString:(NSString *)color{
NSString *cString = [[color stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]] uppercaseString];
// String should be 6 or 8 characters
if ([cString length] < 6) {
return [UIColor clearColor];
}
// strip "0X" or "#" if it appears
if ([cString hasPrefix:@"0X"])
cString = [cString substringFromIndex:2];
if ([cString hasPrefix:@"#"])
cString = [cString substringFromIndex:1];
if ([cString length] != 6)
return [UIColor clearColor];
// Separate into r, g, b substrings
NSRange range;
range.location = 0;
range.length = 2;
//r
NSString *rString = [cString substringWithRange:range];
//g
range.location = 2;
NSString *gString = [cString substringWithRange:range];
//b
range.location = 4;
NSString *bString = [cString substringWithRange:range];
// Scan values
unsigned int r, g, b;
[[NSScanner scannerWithString:rString] scanHexInt:&r];
[[NSScanner scannerWithString:gString] scanHexInt:&g];
[[NSScanner scannerWithString:bString] scanHexInt:&b];
return [UIColor colorWithRed:((float) r / 255.0f) green:((float) g / 255.0f) blue:((float) b / 255.0f) alpha:1.0f];
}

@end

@interface BarViewController ()<ChartViewDelegate>

@property (nonatomic, strong) BarChartView *barChartView;
@property (nonatomic, strong) BarChartData *data;

@end

@implementation BarViewController

- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.

self.view.backgroundColor = [UIColor colorWithRed:230/255.0f green:253/255.0f blue:253/255.0f alpha:1];

//title
UILabel *title_label = [[UILabel alloc] init];
title_label.text = @"Bar Chart";
title_label.font = [UIFont systemFontOfSize:45];
title_label.textColor = [UIColor brownColor];
title_label.textAlignment = NSTextAlignmentCenter;
[self.view addSubview:title_label];
[title_label mas_makeConstraints:^(MASConstraintMaker *make) {
make.size.mas_equalTo(CGSizeMake(200, 50));
make.centerX.equalTo(self.view.mas_centerX);
make.centerY.equalTo(self.view.mas_centerY).offset(-200);
}];

//updateData btn
UIButton *display_btn = [[UIButton alloc] init];
[display_btn setTitle:@"updateData" forState:UIControlStateNormal];
[display_btn setTitleColor:[UIColor blueColor] forState:UIControlStateNormal];
display_btn.titleLabel.textAlignment = NSTextAlignmentCenter;
[self.view addSubview:display_btn];
[display_btn mas_makeConstraints:^(MASConstraintMaker *make) {
make.size.mas_equalTo(CGSizeMake(200, 50));
make.centerX.equalTo(self.view.mas_centerX);
make.centerY.equalTo(self.view.mas_centerY).offset(240);
}];
[display_btn addTarget:self action:@selector(updateData) forControlEvents:UIControlEventTouchUpInside];

//添加barChartView
self.barChartView = [[BarChartView alloc] init];
self.barChartView.delegate = self;//设置代理
[self.view addSubview:self.barChartView];
[self.barChartView mas_makeConstraints:^(MASConstraintMaker *make) {
make.size.mas_equalTo(CGSizeMake(self.view.bounds.size.width-20, 300));
make.center.mas_equalTo(self.view);
}];

//基本样式
self.barChartView.backgroundColor = [UIColor colorWithRed:230/255.0f green:253/255.0f blue:253/255.0f alpha:1];
self.barChartView.noDataText = @"暂无数据";//没有数据时的文字提示
self.barChartView.drawValueAboveBarEnabled = YES;//数值显示在柱形的上面还是下面
self.barChartView.drawHighlightArrowEnabled = NO;//点击柱形图是否显示箭头
self.barChartView.drawBarShadowEnabled = NO;//是否绘制柱形的阴影背景

//交互设置
self.barChartView.scaleYEnabled = NO;//取消Y轴缩放
self.barChartView.doubleTapToZoomEnabled = NO;//取消双击缩放
self.barChartView.dragEnabled = YES;//启用拖拽图表
self.barChartView.dragDecelerationEnabled = YES;//拖拽后是否有惯性效果
self.barChartView.dragDecelerationFrictionCoef = 0.9;//拖拽后惯性效果的摩擦系数(0~1)，数值越小，惯性越不明显

//X轴样式
ChartXAxis *xAxis = self.barChartView.xAxis;
xAxis.axisLineWidth = 1;//设置X轴线宽
xAxis.labelPosition = XAxisLabelPositionBottom;//X轴的显示位置，默认是显示在上面的
xAxis.drawGridLinesEnabled = NO;//不绘制网格线
xAxis.spaceBetweenLabels = 4;//设置label间隔，若设置为1，则如果能全部显示，则每个柱形下面都会显示label
xAxis.labelTextColor = [UIColor brownColor];//label文字颜色

//右边Y轴样式
self.barChartView.rightAxis.enabled = NO;//不绘制右边轴

//左边Y轴样式
ChartYAxis *leftAxis = self.barChartView.leftAxis;//获取左边Y轴
leftAxis.labelCount = 5;//Y轴label数量，数值不一定，如果forceLabelsEnabled等于YES, 则强制绘制制定数量的label, 但是可能不平均
leftAxis.forceLabelsEnabled = NO;//不强制绘制制定数量的label
leftAxis.showOnlyMinMaxEnabled = NO;//是否只显示最大值和最小值
leftAxis.axisMinValue = 0;//设置Y轴的最小值
leftAxis.startAtZeroEnabled = YES;//从0开始绘制
leftAxis.axisMaxValue = 105;//设置Y轴的最大值
leftAxis.inverted = NO;//是否将Y轴进行上下翻转
leftAxis.axisLineWidth = 0.5;//Y轴线宽
leftAxis.axisLineColor = [UIColor blackColor];//Y轴颜色
leftAxis.valueFormatter = [[NSNumberFormatter alloc] init];//自定义格式
leftAxis.valueFormatter.positiveSuffix = @" $";//数字后缀单位
leftAxis.labelPosition = YAxisLabelPositionOutsideChart;//label位置
leftAxis.labelTextColor = [UIColor brownColor];//文字颜色
leftAxis.labelFont = [UIFont systemFontOfSize:10.0f];//文字字体
//网格线样式
leftAxis.gridLineDashLengths = @[@3.0f, @3.0f];//设置虚线样式的网格线
leftAxis.gridColor = [UIColor colorWithRed:200/255.0f green:200/255.0f blue:200/255.0f alpha:1];//网格线颜色
leftAxis.gridAntialiasEnabled = YES;//开启抗锯齿
//添加限制线
ChartLimitLine *limitLine = [[ChartLimitLine alloc] initWithLimit:80 label:@"限制线"];
limitLine.lineWidth = 2;
limitLine.lineColor = [UIColor greenColor];
limitLine.lineDashLengths = @[@5.0f, @5.0f];//虚线样式
limitLine.labelPosition = ChartLimitLabelPositionRightTop;//位置
[leftAxis addLimitLine:limitLine];//添加到Y轴上
leftAxis.drawLimitLinesBehindDataEnabled = YES;//设置限制线绘制在柱形图的后面

//图例说明样式
self.barChartView.legend.enabled = NO;//不显示图例说明
//    self.barChartView.legend.position = ChartLegendPositionBelowChartLeft;//位置

//右下角的description文字样式
self.barChartView.descriptionText = @"";//不显示，就设为空字符串即可
//    self.barChartView.descriptionText = @"柱形图";

self.data = [self setData];

//为柱形图提供数据
self.barChartView.data = self.data;

//设置动画效果，可以设置X轴和Y轴的动画效果
[self.barChartView animateWithYAxisDuration:1.0f];

}

//为柱形图设置数据
- (BarChartData *)setData{

int xVals_count = 12;//X轴上要显示多少条数据
double maxYVal = 100;//Y轴的最大值

//X轴上面需要显示的数据
NSMutableArray *xVals = [[NSMutableArray alloc] init];
for (int i = 0; i < xVals_count; i++) {
[xVals addObject:[NSString stringWithFormat:@"%d月", i+1]];
}

//对应Y轴上面需要显示的数据
NSMutableArray *yVals = [[NSMutableArray alloc] init];
for (int i = 0; i < xVals_count; i++) {
double mult = maxYVal + 1;
double val = (double)(arc4random_uniform(mult));
BarChartDataEntry *entry = [[BarChartDataEntry alloc] initWithValue:val xIndex:i];
[yVals addObject:entry];
}

//创建BarChartDataSet对象，其中包含有Y轴数据信息，以及可以设置柱形样式
BarChartDataSet *set1 = [[BarChartDataSet alloc] initWithYVals:yVals label:nil];
set1.barSpace = 0.2;//柱形之间的间隙占整个柱形(柱形+间隙)的比例
set1.drawValuesEnabled = YES;//是否在柱形图上面显示数值
set1.highlightEnabled = NO;//点击选中柱形图是否有高亮效果，（双击空白处取消选中）
[set1 setColors:ChartColorTemplates.material];//设置柱形图颜色
//将BarChartDataSet对象放入数组中
NSMutableArray *dataSets = [[NSMutableArray alloc] init];
[dataSets addObject:set1];

//创建BarChartData对象, 此对象就是barChartView需要最终数据对象
BarChartData *data = [[BarChartData alloc] initWithXVals:xVals dataSets:dataSets];
[data setValueFont:[UIFont fontWithName:@"HelveticaNeue-Light" size:10.f]];//文字字体
[data setValueTextColor:[UIColor orangeColor]];//文字颜色
NSNumberFormatter *formatter = [[NSNumberFormatter alloc] init];
//自定义数据显示格式
[formatter setNumberStyle:NSNumberFormatterDecimalStyle];
[formatter setPositiveFormat:@"#0.0"];
[data setValueFormatter:formatter];

return data;
}

-(void)updateData{
//数据改变时，刷新数据
self.data = [self setData];
self.barChartView.data = self.data;
[self.barChartView notifyDataSetChanged];
}

#pragma mark - ChartViewDelegate

//点击选中柱形时回调
- (void)chartValueSelected:(ChartViewBase * _Nonnull)chartView entry:(ChartDataEntry * _Nonnull)entry dataSetIndex:(NSInteger)dataSetIndex highlight:(ChartHighlight * _Nonnull)highlight{
NSLog(@"---chartValueSelected---value: %g", entry.value);
}
//没有选中柱形图时回调，当选中一个柱形图后，在空白处双击，就可以取消选择，此时会回调此方法
- (void)chartValueNothingSelected:(ChartViewBase * _Nonnull)chartView{
NSLog(@"---chartValueNothingSelected---");
}
//放大图表时回调
- (void)chartScaled:(ChartViewBase * _Nonnull)chartView scaleX:(CGFloat)scaleX scaleY:(CGFloat)scaleY{
NSLog(@"---chartScaled---scaleX:%g, scaleY:%g", scaleX, scaleY);
}
//拖拽图表时回调
- (void)chartTranslated:(ChartViewBase * _Nonnull)chartView dX:(CGFloat)dX dY:(CGFloat)dY{
NSLog(@"---chartTranslated---dX:%g, dY:%g", dX, dY);
}

@end