黑色方形邊框出現在覈心圖餅圖

Question

CPTXYGraph *graph = [[CPTXYGraph alloc]initWithFrame:self.hostingView.frame]; 
graph.borderColor = [CPTColor whiteColor].cgColor; 
graph.paddingTop = 0.0f; 
graph.paddingRight = 0.0f; 
graph.paddingLeft = 0.0f; 
graph.paddingBottom = 0.0f; 
self.hostingView.hostedGraph = graph; 
graph.axisSet = nil; 


//Apply for theme to graph 
self.graphTheme = [CPTTheme themeNamed:kCPTPlainWhiteTheme]; 
[graph applyTheme:self.graphTheme]; 
[graph release]; 

CPTPieChart *pieChart = [[CPTPieChart alloc]init]; 
pieChart.identifier = @"OverView"; 
pieChart.dataSource = self; 
pieChart.sliceDirection = CPTPieDirectionClockwise; 
pieChart.pieRadius = ((self.hostingView.frame.size.height/2) - 5); 
pieChart.startAngle = M_PI; 
CPTGraph *tempGraph = self.hostingView.hostedGraph; 
    [tempGraph addPlot:pieChart]; 
[pieChart release]; 

對於此代碼我得到黑色的彩色邊框，我認爲這是由於圖axisSet，但我不怎麼刪除。

Answer 1

如果你在談論的是整個圖形周圍會出現邊界框，我會說使用此代碼的聲明[graph applyTheme:self.graphTheme];後：

graph.plotAreaFrame.borderLineStyle = nil; 

這從圖中區域完全消除邊界。