iOS可旋转的饼图

效果图：

代码下载：http://pan.baidu.com/s/1o6BGz0m   http://download.csdn.net/detail/qqmcy/7090865

饼图的第三方类在例子中是有的，使用起来也很简单，下面是使用的代码。

ViewController.h

#import <UIKit/UIKit.h>#import "PieChartView.h"@interface ViewController : UIViewController<PieChartDelegate>@property (nonatomic,strong) NSMutableArray *m_valueArray;  //第一组数据的容器@property (nonatomic,strong) NSMutableArray *m_colorArray; //第一组颜色的容器@property (nonatomic,strong) NSMutableArray *m_valueArray2;//第二组数据的容器@property (nonatomic,strong) NSMutableArray *m_colorArray2;//第二组颜色的容器@property (nonatomic,strong) PieChartView *m_pieChartView; //饼图类@property (nonatomic,strong) UIView *m_pieContainer;      //饼图的容器@property (nonatomic)BOOL inOut;   //点击中心的控制开关@property (nonatomic,strong) UILabel *m_selLabel;  //显示数据的标签@end

ViewController.m

////  ViewController.m//  可旋转的饼图////  Created by 杜甲 on 14-3-24.//  Copyright (c) 2014年 杜甲. All rights reserved.//#import "ViewController.h"#define PIE_HEIGHT 280@interface ViewController ()@end@implementation ViewController- (void)viewDidLoad{        self.inOut = YES;    [super viewDidLoad];// Do any additional setup after loading the view, typically from a nib.    self.m_valueArray = [[NSMutableArray alloc] initWithObjects:                       [NSNumber numberWithInt:12],                       [NSNumber numberWithInt:3],                       [NSNumber numberWithInt:2],                       [NSNumber numberWithInt:3],                       [NSNumber numberWithInt:3],                       [NSNumber numberWithInt:4],                       nil];    self.m_valueArray2 = [[NSMutableArray alloc] initWithObjects:                        [NSNumber numberWithInt:3],                        [NSNumber numberWithInt:2],                        [NSNumber numberWithInt:2],                        nil];            self.m_colorArray = [NSMutableArray arrayWithObjects:                       [UIColor colorWithHue:((0/8)%20)/20.0+0.08 saturation:(0%8+3)/10.0 brightness:91/100.0 alpha:1],                       [UIColor colorWithHue:((1/8)%20)/20.0+0.03 saturation:(1%8+3)/10.0 brightness:91/100.0 alpha:1],                       [UIColor colorWithHue:((2/8)%20)/20.0+0.12 saturation:(2%8+3)/10.0 brightness:91/100.0 alpha:1],                       [UIColor colorWithHue:((3/8)%20)/20.0+0.32 saturation:(3%8+3)/10.0 brightness:91/100.0 alpha:1],                       [UIColor colorWithHue:((4/8)%20)/20.0+0.01 saturation:(4%8+3)/10.0 brightness:91/100.0 alpha:1],                       [UIColor colorWithHue:((5/8)%20)/20.0+0.05 saturation:(5%8+3)/10.0 brightness:91/100.0 alpha:1],                       nil];    self.m_colorArray2 = [[NSMutableArray alloc] initWithObjects:                        [UIColor purpleColor],                        [UIColor orangeColor],                        [UIColor magentaColor],                        nil];            //add shadow img    CGRect pieFrame = CGRectMake((self.view.frame.size.width - PIE_HEIGHT) / 2, 0, PIE_HEIGHT, PIE_HEIGHT);        UIImage *shadowImg = [UIImage imageNamed:@"shadow.png"];    UIImageView *shadowImgView = [[UIImageView alloc]initWithImage:shadowImg];    shadowImgView.frame = CGRectMake(0, pieFrame.origin.y + PIE_HEIGHT*0.92, shadowImg.size.width/2, shadowImg.size.height/2);    [self.view addSubview:shadowImgView];            self.m_pieContainer = [[UIView alloc]initWithFrame:pieFrame];    self.m_pieChartView = [[PieChartView alloc]initWithFrame:self.m_pieContainer.bounds withValue:self.m_valueArray withColor:self.m_colorArray];    self.m_pieChartView.delegate = self;    [self.m_pieContainer addSubview:self.m_pieChartView];    [self.m_pieChartView setAmountText:@"-2456.0"];    [self.view addSubview:self.m_pieContainer];                //add selected view    UIImageView *selView = [[UIImageView alloc]init];    selView.image = [UIImage imageNamed:@"select.png"];    selView.frame = CGRectMake((self.view.frame.size.width - selView.image.size.width/2)/2, self.m_pieContainer.frame.origin.y + self.m_pieContainer.frame.size.height, selView.image.size.width/2, selView.image.size.height/2);    [self.view addSubview:selView];        self.m_selLabel = [[UILabel alloc]initWithFrame:CGRectMake(0, 24, selView.image.size.width/2, 21)];    self.m_selLabel.backgroundColor = [UIColor clearColor];    self.m_selLabel.textAlignment = NSTextAlignmentCenter;    self.m_selLabel.font = [UIFont systemFontOfSize:17];    self.m_selLabel.textColor = [UIColor whiteColor];    [selView addSubview:self.m_selLabel];    [self.m_pieChartView setTitleText:@"支出总计"];    self.title = @"对账单";        }- (void)selectedFinish:(PieChartView *)pieChartView index:(NSInteger)index percent:(float)per{     self.m_selLabel.text = [NSString stringWithFormat:@"%2.2f%@",per*100,@"%"];}- (void)onCenterClick:(PieChartView *)pieChartView{    self.inOut = !self.inOut;    self.m_pieChartView.delegate = nil;    [self.m_pieChartView removeFromSuperview];    self.m_pieChartView = [[PieChartView alloc]initWithFrame:self.m_pieContainer.bounds withValue:self.inOut?self.m_valueArray:self.m_valueArray2 withColor:self.inOut?self.m_colorArray:self.m_colorArray2];    self.m_pieChartView.delegate = self;    [self.m_pieContainer addSubview:self.m_pieChartView];    [self.m_pieChartView reloadChart];        if (self.inOut) {        [self.m_pieChartView setTitleText:@"支出总计"];        [self.m_pieChartView setAmountText:@"-2456.0"];            }else{        [self.m_pieChartView setTitleText:@"收入总计"];        [self.m_pieChartView setAmountText:@"+567.23"];    }}- (void)viewDidAppear:(BOOL)animated{    [self.m_pieChartView reloadChart];}- (void)didReceiveMemoryWarning{    [super didReceiveMemoryWarning];    // Dispose of any resources that can be recreated.}@end