一个简单漂亮的iOS图表库:PNChart

PNChart是一个简单漂亮的动画图表库，Piner 和 CoinsMan 的
iOS 客户端中使用了这个框架。你也可以查看 Swift 版本（开源链接：https://github.com/kevinzhow/PNChart-Swift）。

要求

PNChart 适用于 iOS 7.0 或更高版本，与 ARC 项目兼容。如果需要支持 iOS 6 ，请使用 0.8.1 版本之前的 PNChart 。注意 0.8.2 版本仅支持 iOS 8.0+ ，0.8.3 及更新版本支持 iOS 7.0+ 。
PNChart 依赖于下列框架，这些框架已经嵌入了 Xcode 开发工具：

Foundation.framework
UIKit.framework
CoreGraphics.framework
QuartzCore.framework

你需要 LLVM 3.0 或更高版本来建立 PNChart 。

安装

通过 CocoaPods 安装（推荐）：

1、在你的 Podfile 文件中添加

pod
'PNChart'

。
2、运行

pod
install

进行安装。
3、按需导入头文件

#import
"PNChart.h"

。

手动安装：

拷贝

PNChart

文件夹到你的工程中。

使用

Objective-C

123456789101112131415161718192021222324252627

#import "PNChart.h" //For Line ChartPNLineChart * lineChart = [[PNLineChart alloc] initWithFrame:CGRectMake(0, 135.0, SCREEN_WIDTH, 200.0)];[lineChart setXLabels:@[@"SEP 1",@"SEP 2",@"SEP 3",@"SEP 4",@"SEP 5"]]; // Line Chart No.1NSArray * data01Array = @[@60.1, @160.1, @126.4, @262.2, @186.2];PNLineChartData *data01 = [PNLineChartData new];data01.color = PNFreshGreen;data01.itemCount = lineChart.xLabels.count;data01.getData = ^(NSUInteger index) { CGFloat yValue = [data01Array[index] floatValue]; return [PNLineChartDataItem dataItemWithY:yValue];};// Line Chart No.2NSArray * data02Array = @[@20.1, @180.1, @26.4, @202.2, @126.2];PNLineChartData *data02 = [PNLineChartData new];data02.color = PNTwitterColor;data02.itemCount = lineChart.xLabels.count;data02.getData = ^(NSUInteger index) { CGFloat yValue = [data02Array[index] floatValue]; return [PNLineChartDataItem dataItemWithY:yValue];}; lineChart.chartData = @[data01, data02];[lineChart strokeChart];

Objective-C

1 2 3 4 5 6 7

#import "PNChart.h" //For BarC hart PNBarChart * barChart = [[PNBarChart alloc] initWithFrame:CGRectMake(0, 135.0, SCREEN_WIDTH, 200.0)]; [barChart setXLabels:@[@"SEP 1",@"SEP 2",@"SEP 3",@"SEP 4",@"SEP 5"]]; [barChart setYValues:@[@1, @10, @2, @6, @3]]; [barChart strokeChart];

Objective-C

12345678

#import "PNChart.h" //For Circle Chart PNCircleChart * circleChart = [[PNCircleChart alloc] initWithFrame:CGRectMake(0, 80.0, SCREEN_WIDTH, 100.0) total:[NSNumber numberWithInt:100] current:[NSNumber numberWithInt:60] clockwise:NO shadow:NO];circleChart.backgroundColor = [UIColor clearColor];[circleChart setStrokeColor:PNGreen];[circleChart strokeChart];

Objective-C

1 2 3 4 5 6 7 8 9 10 11

# import "PNChart.h" //For Pie Chart NSArray *items = @[[PNPieChartDataItem dataItemWithValue:10 color:PNRed], [PNPieChartDataItem dataItemWithValue:20 color:PNBlue description:@"WWDC"], [PNPieChartDataItem dataItemWithValue:40 color:PNGreen description:@"GOOL I/O"], ]; PNPieChart *pieChart = [[PNPieChart alloc] initWithFrame:CGRectMake(40.0, 155.0, 240.0, 240.0) items:items]; pieChart.descriptionTextColor = [UIColor whiteColor]; pieChart.descriptionTextFont = [UIFont fontWithName:@"Avenir-Medium" size:14.0]; [pieChart strokeChart];

Objective-C

12345678910111213141516171819202122232425262728293031

# import "PNChart.h"//For Scatter Chart PNScatterChart *scatterChart = [[PNScatterChart alloc] initWithFrame:CGRectMake(SCREEN_WIDTH /6.0 - 30, 135, 280, 200)];[scatterChart setAxisXWithMinimumValue:20 andMaxValue:100 toTicks:6];[scatterChart setAxisYWithMinimumValue:30 andMaxValue:50 toTicks:5]; NSArray * data01Array = [self randomSetOfObjects];PNScatterChartData *data01 = [PNScatterChartData new];data01.strokeColor = PNGreen;data01.fillColor = PNFreshGreen;data01.size = 2;data01.itemCount = [[data01Array objectAtIndex:0] count];data01.inflexionPointStyle = PNScatterChartPointStyleCircle;__block NSMutableArray *XAr1 = [NSMutableArray arrayWithArray:[data01Array objectAtIndex:0]];__block NSMutableArray *YAr1 = [NSMutableArray arrayWithArray:[data01Array objectAtIndex:1]];data01.getData = ^(NSUInteger index) { CGFloat xValue = [[XAr1 objectAtIndex:index] floatValue]; CGFloat yValue = [[YAr1 objectAtIndex:index] floatValue]; return [PNScatterChartDataItem dataItemWithX:xValue AndWithY:yValue];}; [scatterChart setup];self.scatterChart.chartData = @[data01];/***this is for drawing line to compareCGPoint start = CGPointMake(20, 35);CGPoint end = CGPointMake(80, 45);[scatterChart drawLineFromPoint:start ToPoint:end WithLineWith:2 AndWithColor:PNBlack];***/scatterChart.delegate = self;

图例

PNChart 允许在折线图和饼状图中添加图例，图例可以竖向堆叠布置或者横向并列布置。



Objective-C

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27

#import "PNChart.h" //For Line Chart //Add Line Titles for the Legend data01.dataTitle = @"Alpha"; data02.dataTitle = @"Beta Beta Beta Beta"; //Build the legend self.lineChart.legendStyle = PNLegendItemStyleSerial; self.lineChart.legendFontSize = 12.0; UIView *legend = [self.lineChart getLegendWithMaxWidth:320]; //Move legend to the desired position and add to view [legend setFrame:CGRectMake(100, 400, legend.frame.size.width, legend.frame.size.height)]; [self.view addSubview:legend]; //For Pie Chart //Build the legend self.pieChart.legendStyle = PNLegendItemStyleStacked; self.pieChart.legendFontSize = 12.0; UIView *legend = [self.pieChart getLegendWithMaxWidth:200]; //Move legend to the desired position and add to view [legend setFrame:CGRectMake(130, 350, legend.frame.size.width, legend.frame.size.height)]; [self.view addSubview:legend];

更新数据

实时更新数据也非常简单。

Objective-C

12345678910111213141516171819202122232425262728293031323334353637

if ([self.title isEqualToString:@"Line Chart"]) { // Line Chart #1 NSArray * data01Array = @[@(arc4random() % 300), @(arc4random() % 300), @(arc4random() % 300), @(arc4random() % 300), @(arc4random() % 300), @(arc4random() % 300), @(arc4random() % 300)]; PNLineChartData *data01 = [PNLineChartData new]; data01.color = PNFreshGreen; data01.itemCount = data01Array.count; data01.inflexionPointStyle = PNLineChartPointStyleTriangle; data01.getData = ^(NSUInteger index) { CGFloat yValue = [data01Array[index] floatValue]; return [PNLineChartDataItem dataItemWithY:yValue]; }; // Line Chart #2 NSArray * data02Array = @[@(arc4random() % 300), @(arc4random() % 300), @(arc4random() % 300), @(arc4random() % 300), @(arc4random() % 300), @(arc4random() % 300), @(arc4random() % 300)]; PNLineChartData *data02 = [PNLineChartData new]; data02.color = PNTwitterColor; data02.itemCount = data02Array.count; data02.inflexionPointStyle = PNLineChartPointStyleSquare; data02.getData = ^(NSUInteger index) { CGFloat yValue = [data02Array[index] floatValue]; return [PNLineChartDataItem dataItemWithY:yValue]; }; [self.lineChart setXLabels:@[@"DEC 1",@"DEC 2",@"DEC 3",@"DEC 4",@"DEC 5",@"DEC 6",@"DEC 7"]]; [self.lineChart updateChartData:@[data01, data02]]; }else if ([self.title isEqualToString:@"Bar Chart"]){ [self.barChart setXLabels:@[@"Jan 1",@"Jan 2",@"Jan 3",@"Jan 4",@"Jan 5",@"Jan 6",@"Jan 7"]]; [self.barChart updateChartData:@[@(arc4random() % 30),@(arc4random() % 30),@(arc4random() % 30),@(arc4random() % 30),@(arc4random() % 30),@(arc4random() % 30),@(arc4random() % 30)]];}else if ([self.title isEqualToString:@"Circle Chart"]){ [self.circleChart updateChartByCurrent:@(arc4random() % 100)];}

代理回调

Objective-C

1 2 3 4 5

#import "PNChart.h" //For LineChart lineChart.delegate = self;

动画

默认绘制图表时使用动画，可以通过设置

displayAnimation
= NO

来禁止动画。

Objective-C

12345

#import "PNChart.h" //For LineChart lineChart.displayAnimation = NO;

Objective-C

1 2 3 4 5 6 7 8 9

//For DelegateMethod -(void)userClickedOnLineKeyPoint:(CGPoint)point lineIndex:(NSInteger)lineIndex pointIndex:(NSInteger)pointIndex{ NSLog(@"Click Key on line %f, %f line index is %d and point index is %d",point.x, point.y,(int)lineIndex, (int)pointIndex); } -(void)userClickedOnLinePoint:(CGPoint)point lineIndex:(NSInteger)lineIndex{ NSLog(@"Click on line %f, %f, line index is %d",point.x, point.y, (int)lineIndex); }

开源协议

PNChart 在 MIT开源协议 下可以使用，也就是说，只要在项目副本中包含了版权声明和许可声明，用户就可以使用
PNChart 做任何想做的事情，而 PNChart 也无需承担任何责任。可以通过查看 LICENSE 文件来获取更多相关信息。

开源地址：https://github.com/kevinzhow/PNChart