IOS Bezier Round progress bar

    Uibezierpath *apth = [Uibezierpath bezierpathwitharccenter:cgpointmake (65.F) radius:50.f startAngle:-M_PI_2 Endangle:m_pi_2 Clockwise:yes];    Apth.linewidth = 5.0f;    Apth.linecapstyle = Kcglinecapround;    Apth.linejoinstyle = Kcglinejoinround;    [[Uicolor Redcolor] setstroke];    [[Uicolor Orangecolor] setfill];    [Apth stroke];

　　

Progress bar Animation

First, uibezierpath draw segment

    uibezierpath *circlepath = [ Span class= "S1" >uibezierpath bezierpathwitharccenter: cgpointmake (5565.fradius:50.f Startangle:-< span class= "S5" >m_pi_2 endangle :m_pi_2*3 clockwise:yes];

// second, Uibezierpath and cashapelayer associations

Cashapelayercashapelayerlayer];

Progresslayer. path  cgpath ;   

Progresslayer. FillColor = [uicolor clearcolor]. Cgcolor;

Progresslayer. strokecolor  uicolorredcolorcgcolor ;

Progresslayer. linewidth = 5.0f;

Progresslayer. LineCap = kcalinecapround;

// third, animation

cabasicanimation *ani = [ cabasicanimation animationwithkeypath : nsstringfromselector ( @selector (strokeend))];

Ani. fromvalue = @0 ;

Tovalue@1 ;

Duration5 ; 

Addanimationforkeynsstringfromselector@selector (strokeend))];

Layeraddsublayer :p rogresslayer]; 

IOS Bezier Round progress bar