更新到iOS 7後標籤不顯示

Question

我已經使用了核心圖。在更新之前（Xcode4.6到Xcode 5和ios 7），一切正在運行&正常顯示。但更新後Axislabels不顯示。以下是我的代碼

barChartView.frame = CGRectMake(0,30, 320, 440); 
    barChartView.backgroundColor = [UIColor clearColor]; 
    CGRect barChartFrame=CGRectMake(0, 40, 250, 440); 

    if ([UIScreen mainScreen].bounds.size.height > 500) 
    { 
     barChartView.frame=CGRectMake(0,50,320,460); 
     barChartFrame=CGRectMake(0, 60, 250, 460); 
    } 

    CPTXYGraph *localBarChart = [[CPTXYGraph alloc] initWithFrame:barChartFrame]; 

    localBarChart.backgroundColor = [[UIColor clearColor] CGColor]; 


    localBarChart.plotAreaFrame.masksToBorder = NO; 
    localBarChart.cornerRadius=5; 

    localBarChart.paddingLeft = 70.0; 
    localBarChart.paddingTop = 20.0; 
    localBarChart.paddingRight = 20.0; 
    localBarChart.paddingBottom = PADDING_BOTTOM; 

    self.barChart= localBarChart; 
    [localBarChart release]; 

    barChartView.hostedGraph = barChart; 


    // Add plot space for horizontal bar charts 

    CPTXYPlotSpace *plotSpace = (CPTXYPlotSpace *)barChart.defaultPlotSpace; 
    plotSpace.xRange = [CPTPlotRange plotRangeWithLocation:CPTDecimalFromFloat(0.0f) length:CPTDecimalFromFloat([self.topicArray count]+1)]; 
    plotSpace.yRange = [CPTPlotRange plotRangeWithLocation:CPTDecimalFromInteger(0.0) length:CPTDecimalFromInteger(100)]; 


    CPTMutableLineStyle *axisLineStyle = [CPTMutableLineStyle lineStyle]; 
    axisLineStyle.lineColor = [[CPTColor blackColor]colorWithAlphaComponent:0.5]; 
    axisLineStyle.lineWidth = 1.0f; 

    // 2 - Get the graph's axis set 
    CPTXYAxisSet *axisSet = (CPTXYAxisSet *) self.barChartView.hostedGraph.axisSet; 

    static CPTTextStyle *titleStyle = nil; 
    static CPTTextStyle *axisLabelTextStyle = nil; 


    //CPTXYAxisSet *axisSet = (CPTXYAxisSet *)barChart.axisSet; 
    CPTXYAxis *x = axisSet.xAxis; 

    CPTMutableTextStyle *newStyle = [x.labelTextStyle mutableCopy]; 
    newStyle.color = [CPTColor redColor]; 
    newStyle.fontName = FONT_FAMILY_NAME; 
    newStyle.fontSize = 14.0f; 
    titleStyle = newStyle; 

    CPTMutableTextStyle *labelStyle = [x.labelTextStyle mutableCopy]; 
    labelStyle.color = [CPTColor redColor]; 
    newStyle.fontName = FONT_FAMILY_NAME; 
    labelStyle.fontSize = 14.0f; 
    axisLabelTextStyle = labelStyle; 

    x.axisLineStyle = axisLineStyle; 

    x.majorTickLineStyle = nil; 
    x.minorTickLineStyle = nil; 
    x.majorIntervalLength = CPTDecimalFromString(@"4"); 
    x.orthogonalCoordinateDecimal = CPTDecimalFromString(@"0"); 
    x.titleTextStyle = titleStyle; 

    x.title = @"Topics"; 
    // x.titleLocation = CPTDecimalFromInteger(([arrBackData count]+1)/2); 
    x.titleOffset = TITLE_OFFSET; 
    x.labelTextStyle = axisLabelTextStyle; 

    // Define some custom labels for the data elements 

    x.labelRotation = M_PI/4; 
    x.labelingPolicy = CPTAxisLabelingPolicyNone; 

    NSMutableArray *customTickLocations=[[NSMutableArray alloc]init]; 
    for (int tickLocationIndex=1; tickLocationIndex<[self.topicArray count]+1;tickLocationIndex++) 
    { 

     NSString *axisLabels=[NSString stringWithFormat:@"%d",tickLocationIndex]; 
     [customTickLocations addObject:axisLabels]; 

    } 

    NSMutableArray *xAxisLabels=[[NSMutableArray alloc] init]; 
    for(int i=1;i<[self.topicArray count]+1;i++) 
    { 

     NSString *axisLabels; 

     axisLabels=[self.topicArray objectAtIndex:i-1]; 

     [xAxisLabels addObject:axisLabels]; 
    } 

    NSUInteger labelLocation = 0; 
    NSMutableArray *customLabels = [NSMutableArray arrayWithCapacity:[xAxisLabels count]]; 
    for (NSNumber *tickLocation in customTickLocations) { 
     CPTAxisLabel *newLabel = [[CPTAxisLabel alloc] initWithText: [xAxisLabels objectAtIndex:labelLocation++] textStyle:x.labelTextStyle]; 
     newLabel.tickLocation = [tickLocation decimalValue]; 

     newLabel.offset = 1.00; 
     newLabel.rotation = M_PI/2; 
     [customLabels addObject:newLabel]; 
     [newLabel release]; 
    } 

    [customTickLocations release]; 
    [xAxisLabels release]; 
    x.axisLabels = [NSSet setWithArray:customLabels]; 

    CPTXYAxis *y = axisSet.yAxis; 
    y.axisLineStyle = axisLineStyle; 
    y.majorTickLineStyle = nil; 
    y.minorTickLineStyle = nil; 
    y.labelingPolicy = CPTAxisLabelingPolicyAutomatic; 
    y.majorGridLineStyle=nil; 
    y.labelTextStyle = axisLabelTextStyle; 
    y.majorIntervalLength = CPTDecimalFromString(@"10"); 
    y.orthogonalCoordinateDecimal = CPTDecimalFromString(@"0"); 
    y.titleTextStyle = titleStyle; 
    y.title = @"No. of Question(Percentage)"; 

    y.titleOffset = 30.0f; 


    y.titleLocation = CPTDecimalFromFloat(60.0f); 

    if ([UIScreen mainScreen].bounds.size.height > 500) 
    { 
     y.titleLocation = CPTDecimalFromFloat(70.0f); 
    } 

    NSNumberFormatter *formatter = [[[NSNumberFormatter alloc] init] autorelease]; 
    [formatter setMaximumFractionDigits:0]; 
    y.labelFormatter = formatter; 




    CPTBarPlot *barPlot = [[CPTBarPlot alloc] init]; 




    CPTMutableLineStyle *barLineStyle = [[CPTMutableLineStyle alloc] init]; 
    barLineStyle.lineColor = [CPTColor blackColor]; 
    barLineStyle.lineWidth = 0.2; 

    NSString *pathToFillImage; 

    pathToFillImage = [[NSBundle mainBundle] pathForResource:@"SkipBar" ofType:@"png"]; 
    CPTImage *fillImage = [CPTImage imageForPNGFile:pathToFillImage]; 
    fillImage.tiled = NO; 

    CPTFill *areaGradientFill = [CPTFill fillWithImage:fillImage]; 
    barPlot.fill = areaGradientFill; 

    barPlot.dataSource = self; 
    barPlot.baseValue = CPTDecimalFromString(@"0.0"); 
    barPlot.barWidth= CPTDecimalFromDouble(0.3); 
    barPlot.borderColor = [[UIColor clearColor] CGColor]; 
    barPlot.cornerRadius = 0.0f; 
    barPlot.shadowColor = nil; 
    barPlot.shadowRadius = 0.0; 
    barPlot.lineStyle = barLineStyle; 
    barPlot.identifier = @"Bar Plot "; 
    barPlot.barOffset = CPTDecimalFromDouble(0.0); 
    barPlot.opacity = 0.0f; 
    [barChart addPlot:barPlot toPlotSpace:plotSpace]; 

    [barPlot release];//#new 

    CABasicAnimation *fadeInAnimation = [CABasicAnimation animationWithKeyPath:@"opacity"]; 
    fadeInAnimation.duration = 5.0f; 
    fadeInAnimation.removedOnCompletion = NO; 
    fadeInAnimation.fillMode = kCAFillModeBoth; 
    fadeInAnimation.toValue = [NSNumber numberWithFloat:1.0]; 
    [barPlot addAnimation:fadeInAnimation forKey:@"animateOpacity"]; 

    barPlot = [[CPTBarPlot alloc] init]; 
     barPlot.fill = [CPTFill fillWithColor:[CPTColor colorWithComponentRed:(0.709) green:(0.023) blue:(0.031) alpha:(1.0f)] ]; 
     barPlot.fill = [CPTFill fillWithColor:[CPTColor colorWithComponentRed:(0.756) green:(0.050) blue:(0.050) alpha:(1.0f)] ]; 

    NSString *pathToFillImage1; 

    pathToFillImage1 = [[NSBundle mainBundle] pathForResource:@"WrongBar" ofType:@"png"]; 
    CPTImage *fillImage1 = [CPTImage imageForPNGFile:pathToFillImage1]; 
    fillImage.tiled = NO; 
    CPTFill *areaGradientFill1 = [CPTFill fillWithImage:fillImage1]; 
    barPlot.fill = areaGradientFill1; 

    barPlot.baseValue = CPTDecimalFromString(@"0.0"); 
    barPlot.barWidth= CPTDecimalFromDouble(0.3); 
    barPlot.dataSource = self; 
    barPlot.lineStyle = barLineStyle; 
    barPlot.borderColor = [[UIColor clearColor] CGColor]; 
    barPlot.cornerRadius = 0.0f; 
    barPlot.identifier = @"Bar Plot 1"; 
    barPlot.opacity = 0.0f; 
    barPlot.shadowRadius = 0.0; 
    barPlot.barOffset = CPTDecimalFromDouble(0.0); 
    barPlot.shadowColor = nil; 
    [barChart addPlot:barPlot toPlotSpace:plotSpace]; 

    [barPlot release];//#new 

    fadeInAnimation = [CABasicAnimation animationWithKeyPath:@"opacity"]; 
    fadeInAnimation.duration = 5.0f; 
    fadeInAnimation.removedOnCompletion = NO; 
    fadeInAnimation.fillMode = kCAFillModeBoth; 
    fadeInAnimation.toValue = [NSNumber numberWithFloat:1.0]; 
    [barPlot addAnimation:fadeInAnimation forKey:@"animateOpacity"]; 

    // Second bar plot 
    barPlot = [[CPTBarPlot alloc] init]; 
    barPlot.fill = [CPTFill fillWithColor:[CPTColor colorWithComponentRed:(0.588) green:(0.717) blue:(0.035) alpha:(1.0f)] ]; 
     barPlot.fill = [CPTFill fillWithColor:[CPTColor colorWithComponentRed:(0.239) green:(0.588) blue:(0.031) alpha:(1.0f)] ]; 

    NSString *pathToFillImage2; 
    pathToFillImage2 = [[NSBundle mainBundle] pathForResource:@"RightBar" ofType:@"png"]; 

    CPTImage *fillImage2 = [CPTImage imageForPNGFile:pathToFillImage2]; 
    fillImage2.tiled = NO; 
    CPTFill *areaGradientFill2 = [CPTFill fillWithImage:fillImage2]; 
    barPlot.fill = areaGradientFill2; 

    barPlot.dataSource = self; 
    barPlot.baseValue = CPTDecimalFromString(@"0.0"); 
    barPlot.barWidth=CPTDecimalFromDouble(0.3); 
    barPlot.cornerRadius = 0.0f; 
    barPlot.shadowRadius = 0.0; 
    barPlot.borderColor = [[UIColor clearColor] CGColor]; 
    barPlot.shadowColor = nil;//[[UIColor clearColor] CGColor]; 
    barPlot.barOffset = CPTDecimalFromDouble(0.0); 
    barPlot.lineStyle = barLineStyle; 
    barPlot.identifier = @"Bar Plot 2"; 
    barPlot.opacity = 0.0f; 
    [barChart addPlot:barPlot toPlotSpace:plotSpace]; 
    [barLineStyle release]; 
    [barPlot release];//#new 

Answer 1

我解決了我的問題。這是因爲文件CPTTextStylePlatformSpecific.m文件中的UILineBreakModeWordWrap & UITextAlignment。

1）替換到UILineBreakModeWordWrapNSLineBreakByWordWrapping

2）替換到UITextAlignmentNSTextAlignment

即

[self drawInRect:rect 
      withFont:theFont 
     lineBreakMode:UILineBreakModeWordWrap 
      alignment:(UITextAlignment)style.textAlignment]; 

替換上述代碼

[self drawInRect:rect 
     withFont:theFont 
    lineBreakMode:NSLineBreakByWordWrapping 
     alignment:(NSTextAlignment)style.textAlignment];