如何修正Coreplot餅圖問題64位版本VS 32位版本

相關視圖控制器爲H文件如何修正Coreplot餅圖問題64位版本VS 32位版本

#import <UIKit/UIKit.h> 
#import "StudentModel.h" 
#import "CorePlot-CocoaTouch.h" 


@interface AttendenceViewController : UIViewController  <UITabBarDelegate,UITableViewDataSource,CPTLegendDelegate,CPTPieChartDataSource,CPTPieChartDelegate> 

@property (strong,nonatomic) StudentModel *studentA; 
@property (strong,nonatomic) NSDictionary *studentAttendanceDetails; 
@property (weak, nonatomic) IBOutlet UIView *graphContainer;

用於相關視圖控制器

#import "AttendenceViewController.h" 

@interface AttendenceViewController() 
@property (nonatomic,strong) CPTGraphHostingView *hostView; 
@property (nonatomic,strong) CPTTheme *selectedTheme; 

-(void)initPlot; 
-(void)configureHost; 
-(void)configureGraph; 
-(void)configureChart; 
-(void)configureLegend; 
@end 

@implementation AttendenceViewController 

- (void)viewDidLoad { 
[super viewDidLoad]; 
// Do any additional setup after loading the view. 
// float attendanceTotal = [self.studentA.percentageAttendance floatValue]; 
// float authorisedAbsences = [self.studentA.authorisedAbsences floatValue]; 
// float unathorisedAbsences = [self.studentA.unautherisedAbsences floatValue]; 

self.studentAttendanceDetails = [NSDictionary dictionaryWithObjectsAndKeys:self.studentA.percentageAttendance,@"totalAttendance",self.studentA.authorisedAbsences,@"authorisedAbsences",self.studentA.unautherisedAbsences,@"unauthorisedAbsences", nil]; 
NSLog(@"%@",self.studentAttendanceDetails); 
} 

-(void)viewDidAppear:(BOOL)animated 
{ 
[super viewDidAppear:animated]; 
[self initPlot]; 

} 

#pragma mark Core Plot Initialisation Methods 
-(void)initPlot 
{ 
[self configureHost]; 
[self configureGraph]; 
[self configureChart]; 
[self configureLegend]; 

} 

-(void)configureHost; 
{ 
CGRect parentRect = self.graphContainer.bounds; 
self.hostView = [(CPTGraphHostingView*)[CPTGraphHostingView alloc]initWithFrame:parentRect]; 
self.hostView.allowPinchScaling=NO; 
[self.graphContainer addSubview:self.hostView]; 
} 
-(void)configureGraph; 
{ 
//create and initialise the graph 
CPTGraph *graph = [[CPTXYGraph alloc]initWithFrame:self.hostView.bounds]; 
self.hostView.hostedGraph=graph; 
graph.paddingLeft=0.0f; 
graph.paddingTop=0.0f; 
graph.paddingRight=0.0f; 
graph.paddingBottom=0.0f; 
graph.axisSet=nil; 
//set up the text styles 
CPTMutableTextStyle *textStyle = [CPTMutableTextStyle textStyle]; 
textStyle.color= [CPTColor grayColor]; 
textStyle.fontName [email protected]"Helvetica-Bold"; 
textStyle.fontSize=16.0f; 
//configure the title 
NSString *title = @"Student Attendance"; 
graph.title=title; 
graph.titleTextStyle=textStyle; 
graph.titlePlotAreaFrameAnchor= CPTRectAnchorTop; 
graph.titleDisplacement= CGPointMake(0.0f, -12.0f); 
self.selectedTheme = [CPTTheme themeNamed:kCPTPlainWhiteTheme]; 
[graph applyTheme:self.selectedTheme]; 

} 
-(void)configureChart; 
{ 
//get reference to graph 
CPTGraph *graph = self.hostView.hostedGraph; 
//create chart 
CPTPieChart *pieChart = [[CPTPieChart alloc]init]; 
pieChart.delegate=self; 
pieChart.dataSource=self; 
pieChart.pieRadius=(self.hostView.bounds.size.height*0.9)/3; 
pieChart.identifier= graph.title; 
pieChart.startAngle = M_PI_4; 
pieChart.sliceDirection=CPTPieDirectionClockwise; 
//gradient 
CPTGradient *overlayGradient = [[CPTGradient alloc]init]; 
overlayGradient.gradientType=CPTGradientTypeRadial; 
overlayGradient=[overlayGradient addColorStop:[[CPTColor blackColor]colorWithAlphaComponent:0.0] atPosition:0.9]; 
overlayGradient=[overlayGradient addColorStop:[[CPTColor blackColor]colorWithAlphaComponent:0.4] atPosition:1.0]; 
pieChart.overlayFill = [CPTFill fillWithGradient:overlayGradient]; 
[graph addPlot:pieChart]; 
} 
-(void)configureLegend; 
{ 

} 


#pragma mark Core Plot Datasource Methods 

-(NSUInteger)numberOfRecordsForPlot:(CPTPlot *)plot 
{ 
return [self.studentAttendanceDetails count]; 
} 

-(NSNumber*)numberForPlot:(CPTPlot *)plot field:(NSUInteger)fieldEnum recordIndex:(NSUInteger)idx 
{ 
if (CPTPieChartFieldSliceWidth == fieldEnum) 
{ 
    NSArray *values = [self.studentAttendanceDetails allValues]; 
    return [values objectAtIndex:idx]; 

} 
return [NSDecimalNumber zero]; 
} 

-(CPTLayer*)dataLabelForPlot:(CPTPlot *)plot recordIndex:(NSUInteger)idx 
{ 
static CPTMutableTextStyle *labelText = nil; 
if (!labelText) { 
    labelText= [[CPTMutableTextStyle alloc] init]; 
    labelText.color = [CPTColor grayColor]; 
} 

NSString *labelValue = nil; 

switch (idx) { 

    case 0:{ 
     NSString *unauthorised= [self.studentAttendanceDetails objectForKey:@"unauthorisedAbsences"]; 
     NSLog(@"%@",unauthorised); 
     if ([unauthorised isEqualToString:@"0.00"]) { 
      labelText=nil; 
     } 
     labelValue = [NSString stringWithFormat:@"%@",[self.studentAttendanceDetails objectForKey:@"unauthorisedAbsences"]]; 
    } 
     break; 

    case 1: 
     labelValue = [NSString stringWithFormat:@"%@",[self.studentAttendanceDetails objectForKey:@"totalAttendance"]]; 
        break; 
     case 2: 
     labelValue = [NSString stringWithFormat:@"%@",[self.studentAttendanceDetails objectForKey:@"authorisedAbsences"]]; 

     break; 
      } 
return [[CPTTextLayer alloc] initWithText:labelValue style:labelText]; 


} 

-(NSString*)legendTitleForPieChart:(CPTPieChart *)pieChart recordIndex:(NSUInteger)idx 
{ 
return @"Student Attendance"; 
} 

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

圖像的M檔結果當模擬器被設置爲iPhone 5和運行（即32位）