自定义标签设置 - 字体，颜色，大小没有被使用？

Question

从情节图库样张 - LabelingPolicyDemo.m，它采用的无标签的政策，并设置每个标签使用了相同的风格为轴心标题：

CPTMutableLineStyle *majorTickLineStyle = [axisLineStyle mutableCopy]; 
majorTickLineStyle.lineWidth = 3.0; 
majorTickLineStyle.lineCap = kCGLineCapRound; 

CPTMutableLineStyle *minorTickLineStyle = [axisLineStyle mutableCopy]; 
minorTickLineStyle.lineWidth = 2.0; 
minorTickLineStyle.lineCap = kCGLineCapRound; 

// Text styles 
CPTMutableTextStyle *axisTitleTextStyle = [CPTMutableTextStyle textStyle]; 
axisTitleTextStyle.fontName = @"Helvetica-Bold"; 
axisTitleTextStyle.color = [CPTColor redColor]; // differs from sample 

// Tick locations 
CPTNumberSet *majorTickLocations = [NSSet setWithObjects:@0, @30, @50, @85, @100, nil]; 

CPTMutableNumberSet *minorTickLocations = [NSMutableSet set]; 
for (NSUInteger loc = 0; loc <= 100; loc += 10) { 
    [minorTickLocations addObject:@(loc)]; 
} 

// Axes 
// CPTAxisLabelingPolicyNone 
CPTXYAxis *axisNone = [[CPTXYAxis alloc] init]; 
axisNone.plotSpace   = graph.defaultPlotSpace; 
axisNone.labelingPolicy  = CPTAxisLabelingPolicyNone; 
axisNone.orthogonalPosition = @1.0; 
axisNone.tickDirection  = CPTSignNone; 
axisNone.axisLineStyle  = axisLineStyle; 
axisNone.majorTickLength = majorTickLength; 
axisNone.majorTickLineStyle = majorTickLineStyle; 
axisNone.minorTickLength = minorTickLength; 
axisNone.minorTickLineStyle = minorTickLineStyle; 
axisNone.title    = @"CPTAxisLabelingPolicyNone"; 
axisNone.titleTextStyle  = axisTitleTextStyle; 
axisNone.titleOffset  = titleOffset; 
axisNone.majorTickLocations = majorTickLocations; 
axisNone.minorTickLocations = minorTickLocations; 

CPTMutableAxisLabelSet *newAxisLabels = [NSMutableSet set]; 
for (NSUInteger i = 0; i <= 5; i++) { 
    CPTAxisLabel *newLabel = [[CPTAxisLabel alloc] initWithText:[NSString stringWithFormat:@"Label %lu", (unsigned long)i] 
                 textStyle:axisNone.labelTextStyle]; 
    newLabel.tickLocation = @(i * 20); 
    newLabel.offset  = axisNone.labelOffset + axisNone.majorTickLength/CPTFloat(2.0); 

    [newAxisLabels addObject:newLabel]; 
} 
axisNone.axisLabels = newAxisLabels; 

但由此产生的轴标签和标题应匹配他们不 - 尺寸，颜色或字体？标签文字样式显示为常量。

请参阅Axis Labeling Policies样本。

Answer 1

问题中的代码将红色文本样式设置为titleTextStyle，并在创建轴标签时使用labelTextStyle。这些文本样式是独立的，尽管如果你想使用相同的样式。