核心情节和显示ÿ标签

Question

我碰到的与iOS和核心情节正确显示我的Y轴标签的一些问题...

我会告诉你两种不同的情景我现在有，并希望有人可以帮助我得到正常工作其中之一......

好了，所以第一种方案： 代码：

// Configure y-axis 
CPTAxis *y = axisSet.yAxis; 
y.axisLineStyle = axisLineStyle; 
y.majorGridLineStyle = customGridStyle; 
y.labelingPolicy = CPTAxisLabelingPolicyAutomatic; 
y.labelTextStyle = axisTextStyle; 
y.majorTickLineStyle = axisLineStyle; 
y.majorTickLength = 0.0f; 
y.minorTickLength = 0.0f; 
y.tickDirection = CPTSignNegative; 
NSInteger majorIncrement = [self findStep:(maxValue - minValue)/7]; 
CGFloat yMax = [self findMaximumValue:maxValue]; 
NSMutableSet *yLabels = [NSMutableSet set]; 
NSMutableSet *yMajorLocations = [NSMutableSet set]; 

int maxLocation = 0; 

for (NSInteger j = 0; j <= yMax + majorIncrement; j += majorIncrement) { 
    CPTAxisLabel *label = [[CPTAxisLabel alloc] initWithText:[NSString stringWithFormat:@"%i", j] textStyle:y.labelTextStyle]; 
    NSDecimal location = CPTDecimalFromInteger(j); 
    label.tickLocation = location; 
    label.offset = 125; 

    if (label) { 
     [yLabels addObject:label]; 
    } 

    [yMajorLocations addObject:[NSDecimalNumber decimalNumberWithDecimal:location]]; 
    if (maxLocation < [[NSDecimalNumber decimalNumberWithDecimal:location] intValue]) { 
     maxLocation = [[NSDecimalNumber decimalNumberWithDecimal:location] intValue]; 
    } 
} 

y.gridLinesRange = [CPTPlotRange plotRangeWithLocation:CPTDecimalFromInteger(0) length:CPTDecimalFromInteger(maxLocation)]; 
y.axisLabels = yLabels; 
y.majorTickLocations = yMajorLocations; 

现在这个代码的工作在一定程度上...查看我下面的截图：

在这里，我很想改变部分是小数......我想改变小数点的位置到现在显示.0 ...

场景（我真的很喜欢的那个） 为了节省阅读下面的代码的麻烦，我可以指出这里的大变化是：

y.labelingPolicy = CPTAxisLabelingPolicyNone;

代码：

// Configure y-axis 
CPTAxis *y = axisSet.yAxis; 
y.axisLineStyle = axisLineStyle; 
y.majorGridLineStyle = customGridStyle; 
y.labelingPolicy = CPTAxisLabelingPolicyNone; 
y.labelTextStyle = axisTextStyle; 
y.majorTickLineStyle = axisLineStyle; 
y.majorTickLength = 0.0f; 
y.minorTickLength = 0.0f; 
y.tickDirection = CPTSignPositive; 
NSInteger majorIncrement = [self findStep:(maxValue - minValue)/7]; 
CGFloat yMax = [self findMaximumValue:maxValue]; 
NSMutableSet *yLabels = [NSMutableSet set]; 
NSMutableSet *yMajorLocations = [NSMutableSet set]; 

int maxLocation = 0; 

for (NSInteger j = 0; j <= yMax + majorIncrement; j += majorIncrement) { 
    CPTAxisLabel *label = [[CPTAxisLabel alloc] initWithText:[NSString stringWithFormat:@"%i", j] textStyle:y.labelTextStyle]; 
    NSDecimal location = CPTDecimalFromInteger(j); 
    label.tickLocation = location; 
    label.offset = -25; 

    if (label) { 
     [yLabels addObject:label]; 
    } 

    [yMajorLocations addObject:[NSDecimalNumber decimalNumberWithDecimal:location]]; 
    if (maxLocation < [[NSDecimalNumber decimalNumberWithDecimal:location] intValue]) { 
     maxLocation = [[NSDecimalNumber decimalNumberWithDecimal:location] intValue]; 
    } 
} 

y.gridLinesRange = [CPTPlotRange plotRangeWithLocation:CPTDecimalFromInteger(0) length:CPTDecimalFromInteger(maxLocation)]; 
y.axisLabels = yLabels; 
y.majorTickLocations = yMajorLocations; 
x.gridLinesRange = [CPTPlotRange plotRangeWithLocation:CPTDecimalFromInteger(0) length:CPTDecimalFromInteger(maxLocation)]; 

，情节出来为：

现在这里有很多Ÿ轴系失踪......

任何帮助将不胜感激！

Answer 1

使用CPTAxisLabelingPolicyNone标签政策，您可以完全控制勾号位置和标签。您需要决定要制作多少个刻度和标签，以及将它们放在哪里。

如果你想要做的是改变数字格式的轴，保持CPTAxisLabelingPolicyAutomatic标签策略（或除CPTAxisLabelingPolicyNone其他的任何一个），删除，创建刻度位置和标签的代码，并更改labelFormatter。您可以使用任何NSFormatter。创建一个NSNumberFormatter，将其配置为显示所需的数字格式，并将其设置为labelFormatter属性。