Circular Progress Bar Indicator

iOS don't provide pre-build 'Circular Progress View/Bar' like UIProgressBar.
Implementing a 'Circular Progress View' is simple in iOS. Here piece of code for implement 'Circular Progress View'.

1) Create a Sub-Class of UIView Class

@interface CircularProgressView : UIView
{
    CGFloat startAngle;
    CGFloat endAngle;
}
@property (nonatomic, assign) CGFloat percentage;
-(id) initWithFrame:(CGRect)frame;
@end

#import "CircularProgressView.h"

@implementation CircularProgressView

-(id) initWithFrame:(CGRect)frame{

  self = [super initWithFrame:frame];
    if (self) {
       
        startAngle = M_PI * 1.5;
        endAngle = startAngle + (M_PI*2);
    }
    return self;
}

// Only override drawRect: if you perform custom drawing.
// An empty implementation adversely affects performance during animation.
- (void)drawRect:(CGRect)rect {
    CGContextRef context = UIGraphicsGetCurrentContext();
    [[UIColor colorWithRed:(CGFloat)235/255 green:(CGFloat)237/255 blue:(CGFloat)236/255 alpha:1] setStroke];
    UIBezierPath *benzierPathBack = [UIBezierPath bezierPath];
    [benzierPathBack addArcWithCenter:CGPointMake(rect.size.width / 2, rect.size.height / 2) radius:(rect.size.width / 2 - 5) startAngle:startAngle endAngle:(endAngle - startAngle) * (100 / 100.0) + startAngle clockwise:YES];
   
    benzierPathBack.lineWidth = 10;
    [benzierPathBack stroke];
   
    CGContextSaveGState(context);
   
    UIBezierPath* bezierPath = [UIBezierPath bezierPath];
   
    // Create our arc, with the correct angles
    [bezierPath addArcWithCenter:CGPointMake(rect.size.width / 2, rect.size.height / 2) radius:(rect.size.width / 2-5) startAngle:startAngle endAngle:(endAngle - startAngle) * (_percentage / 100.0) + startAngle clockwise:YES];
   
    // Set the display for the path, and stroke it
    bezierPath.lineWidth = 10;
    [[UIColor colorWithRed:(CGFloat)1/255 green:(CGFloat)111/255 blue:(CGFloat)37/255 alpha:1] setStroke];
    [bezierPath stroke];  
}


Import CircularProgressView Class, create an object and change percentage value, you can see a 'Circular Progress View'.