核心情節和顯示ÿ標籤

Question

我碰到的與iOS和核心情節正確顯示我的Y軸標籤的一些問題...

我會告訴你兩種不同的情景我現在有，並希望有人可以幫助我得到正常工作其中之一......

好了，所以第一種方案： 代碼：

// 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; 

現在這個代碼的工作在一定程度上...查看我下面的截圖：

在這裏，我很想改變部分是小數......我想改變小數點的位置到現在顯示.0 ...

場景（我真的很喜歡的那個） 爲了節省閱讀下面的代碼的麻煩，我可以指出這裏的大變化是：

y.labelingPolicy = CPTAxisLabelingPolicyNone;

代碼：

// 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)]; 

，情節出來爲：

現在這裏有很多Ÿ軸系失蹤......

任何幫助將不勝感激！

Answer 1

使用CPTAxisLabelingPolicyNone標籤政策，您可以完全控制勾號位置和標籤。您需要決定要製作多少個刻度和標籤，以及將它們放在哪裏。

如果你想要做的是改變數字格式的軸，保持CPTAxisLabelingPolicyAutomatic標籤策略（或除CPTAxisLabelingPolicyNone其他的任何一個），刪除，創建刻度位置和標籤的代碼，並更改labelFormatter。您可以使用任何NSFormatter。創建一個NSNumberFormatter，將其配置爲顯示所需的數字格式，並將其設置爲labelFormatter屬性。