How to draw a pie chart based on the marks percentage in ios? -

i working on 1 of school application. in which, based on percentage achieved student respective piechart should drawn animation.

for example, if student got 50%, pie chart needs filled 50% animation.

can please me on this. used below code,

// set shape of circle int radius = 60; cashapelayer *circle = [cashapelayer layer]; // make circular shape circle.path = [uibezierpath bezierpathwithroundedrect:cgrectmake(0, 0, 2.0*radius, 2.0*radius)                                          cornerradius:radius].cgpath; // center shape in self.view circle.position = cgpointmake(cgrectgetmidx(self.view.frame)-radius,                               cgrectgetmidy(self.view.frame)-radius);  // configure apperence of circle circle.fillcolor = [uicolor clearcolor].cgcolor; circle.strokecolor = [uicolor redcolor].cgcolor; circle.linewidth = 10;  // add parent layer [self.view.layer addsublayer:circle];  // configure animation cabasicanimation *drawanimation = [cabasicanimation animationwithkeypath:@"strokeend"]; drawanimation.duration            = 10.0; // "animate on 10 seconds or so.." drawanimation.repeatcount         = 1.0;  // animate once..  // animate no part of stroke being drawn entire stroke being drawn drawanimation.fromvalue = [nsnumber numberwithfloat:0.0f]; drawanimation.tovalue   = [nsnumber numberwithfloat:0.75f];  // experiment timing appearence way want drawanimation.timingfunction = [camediatimingfunction functionwithname:kcamediatimingfunctioneasein];  // add animation circle [circle addanimation:drawanimation forkey:@"drawcircleanimation"]; 

i stop animation @ 50%.

please use circle.strokeend = 0.5f;

it automatically stops @ 50%, if give 1.0f goes 100%