IOS 圆形进度条

//
//  CCProgressView.h
//  Demo
//
//  Created by leao on 2017/8/7.
//  Copyright © 2017年 zaodao. All rights reserved.
//

#import <UIKit/UIKit.h>

typedef NS_ENUM(NSInteger, CCProgressViewStyle) {
    CCProgressViewStyleCircle,                                          // 圆形进度条
    CCProgressViewStyleBar,                                             // 条形进度条
    CCProgressViewStyleDefault = CCProgressViewStyleCircle,
};

@interface CCProgressView : UIView
@property(nonatomic, assign, setter=setProgress:) CGFloat progress;     // 0.0 ~ 1.0

@property(nonatomic, assign) CCProgressViewStyle progressViewStyle;     // 进度条style
@property(nonatomic, strong) UIColor *trackTintColor;                   // 进度条背景色
@property(nonatomic, strong) UIColor *progressTintColor;                // 进度条颜色
@property(nonatomic, strong) UIColor *progressFullTintColor;            // 进度完成时progressTint的颜色
@property(nonatomic, assign) CGFloat lineWidth;                         // 绘制progress宽度  default: 10
@property(nonatomic, assign) CGFloat trackerWidth;                         // 绘制progress宽度  default: 10

// CCProgressViewStyleCircle 有效
@property(nonatomic, strong) UIColor *fillColor;                // 中心颜色
@property(nonatomic, assign) BOOL clockwise;                    // 是否是顺时针 default: YES
@property(nonatomic, assign) CGFloat startAngle;                // 进度条开始angle, default: -M_PI/2.0
@property (nonatomic, strong) UIButton *centerBtn; // 记录进度的Label
@property (nonatomic, strong) UIColor *labelbackgroundColor; // Label的背景色 默认clearColor
@property (nonatomic, strong) UIColor *textColor; // Label的字体颜色 默认黑色
@property (nonatomic, strong) UIFont  *textFont; // Label的字体大小 默认15

- (void)setProgress:(CGFloat)progress;
- (void)setProgress:(CGFloat)progress animated:(BOOL)animated;
@end

//
//  CCProgressView.m
//  Demo
//
//  Created by leao on 2017/8/7.
//  Copyright © 2017年 zaodao. All rights reserved.
//

#import "CCProgressView.h"
#import <pop/POP.h>
#import <objc/runtime.h>
#import <ReactiveCocoa/ReactiveCocoa.h>

#define kCCProgressFillColor                [UIColor clearColor]
#define kCCProgressTintColor                RGBCOLOR(214, 88, 45)
#define kCCTrackTintColor                   RGBCOLOR(243, 212, 187)
#define PROGRESS_WIDTH                      self.frame.size.width
#define PROGRESS_HEIGHT                     self.frame.size.height

#define kAnimTimeInterval 2

@interface CCProgressView ()

@property(nonatomic, strong) CAShapeLayer *trackLayer;
@property(nonatomic, strong) CAShapeLayer *progressLayer;

@end
@implementation CCProgressView

- (instancetype)initWithFrame:(CGRect)frame
{
    self = [super initWithFrame:frame];
    if (self) {
        [self initSubviews];
    }
    return self;
}

- (instancetype)init
{
    self = [super init];
    if (self) {
        [self initSubviews];
    }
    return self;
}

#pragma mark - private
- (void)initSubviews
{
    _progressViewStyle = CCProgressViewStyleDefault;
    _progressTintColor = kCCProgressTintColor;
    _trackTintColor = kCCTrackTintColor;
    _lineWidth = 10;
    _trackerWidth = 10;
    
    _fillColor = kCCProgressFillColor;
    _clockwise = YES;
    _startAngle = - M_PI / 2.0;
    
    self.backgroundColor = [UIColor clearColor];
    
    self.trackLayer = [CAShapeLayer layer];
    self.trackLayer.lineCap = kCALineCapButt;
    self.trackLayer.lineJoin = kCALineCapButt;
    self.trackLayer.lineWidth = _lineWidth;
    self.trackLayer.fillColor = nil;
    self.trackLayer.strokeColor = _trackTintColor.CGColor;
    self.trackLayer.frame = self.bounds;
    [self.layer addSublayer:self.trackLayer];
    
    self.progressLayer = [CAShapeLayer layer];
    self.progressLayer.lineCap = kCALineCapButt;
    self.progressLayer.lineJoin = kCALineCapButt;
    self.progressLayer.lineWidth = _trackerWidth;
    self.progressLayer.fillColor = _fillColor.CGColor;
    self.progressLayer.strokeColor = _progressTintColor.CGColor;
    self.progressLayer.frame = self.bounds;
    [self.layer addSublayer:self.progressLayer];
    
    self.progressLayer.strokeEnd = 0.0;
    
    [self addSubview:self.centerBtn];
}

- (void)layoutSubviews
{
    [super layoutSubviews];
    
    [self updateLayerPath];
}

#pragma mark - private

- (UIButton *)centerBtn
{
    if(!_centerBtn)
    {
        _centerBtn = [[UIButton alloc] initWithFrame:CGRectMake(0, 0, PROGRESS_WIDTH - 14, PROGRESS_HEIGHT - 14)];
        _centerBtn.center = CGPointMake(PROGRESS_WIDTH/2, PROGRESS_HEIGHT/2);
        _centerBtn.titleLabel.textAlignment = NSTextAlignmentCenter;
        _centerBtn.layer.cornerRadius = _centerBtn.width/2;
        _centerBtn.backgroundColor = RGBCOLOR(246, 227, 204);
        _centerBtn.titleLabel.adjustsFontSizeToFitWidth = YES;
        _centerBtn.userInteractionEnabled = NO;
        _centerBtn.layer.masksToBounds = YES;
    }
    return _centerBtn;
}

- (void)updateLayerPath
{
    if (_progressViewStyle == CCProgressViewStyleCircle) {
        self.trackLayer.frame = self.bounds;
        self.progressLayer.frame = self.bounds;
        
        CGFloat radius = CGRectGetWidth(self.frame) > CGRectGetHeight(self.frame) ?
        (CGRectGetHeight(self.frame) - _lineWidth) / 2.0 : (CGRectGetWidth(self.frame) - _lineWidth) / 2.0;
        UIBezierPath *bezierPath = [UIBezierPath bezierPathWithArcCenter:self.progressLayer.position radius:radius startAngle:_startAngle endAngle:_clockwise ? _startAngle + 2 * M_PI : _startAngle - 2 * M_PI clockwise:_clockwise];
        self.trackLayer.path = bezierPath.CGPath;
        self.progressLayer.path = bezierPath.CGPath;
    } else {
        self.trackLayer.frame = CGRectMake(0, (CGRectGetHeight(self.frame) - _lineWidth) / 2.0, CGRectGetWidth(self.frame), _lineWidth);
        self.progressLayer.frame = self.trackLayer.frame;
        
        UIBezierPath *bezierPath = [UIBezierPath bezierPath];
        [bezierPath moveToPoint:CGPointMake(0, self.progressLayer.position.y)];
        [bezierPath addLineToPoint:CGPointMake(CGRectGetWidth(self.frame), self.progressLayer.position.y)];
        self.trackLayer.path = bezierPath.CGPath;
        self.progressLayer.path = bezierPath.CGPath;
    }
}

#pragma mark - setter
- (void)setTrackTintColor:(UIColor *)trackTintColor
{
    _trackTintColor = trackTintColor;
    self.trackLayer.strokeColor = trackTintColor.CGColor;
}

- (void)setProgressTintColor:(UIColor *)progressTintColor
{
    _progressTintColor = progressTintColor;
    self.progressLayer.strokeColor = progressTintColor.CGColor;
}

- (void)setProgressFullTintColor:(UIColor *)progressFullTintColor
{
    _progressFullTintColor = progressFullTintColor;
    if (self.progressLayer.strokeEnd >= 1.0) {
        self.progressLayer.strokeEnd = 1.0;
        self.progressLayer.strokeColor = _progressFullTintColor.CGColor;
    }
}

- (void)setLineWidth:(CGFloat)lineWidth
{
    _lineWidth = lineWidth;
//    self.trackLayer.lineWidth = lineWidth;
    self.progressLayer.lineWidth = lineWidth;
    if (_progressViewStyle != CCProgressViewStyleCircle) {
        [self updateLayerPath];
    }
}

- (void)setTrackerWidth:(CGFloat)trackerWidth {
    _trackerWidth = trackerWidth;
    self.trackLayer.lineWidth = _trackerWidth;
    if (_progressViewStyle != CCProgressViewStyleCircle) {
        [self updateLayerPath];
    }
}

#pragma mark - setter (CCProgressViewStyleCircle)
- (void)setFillColor:(UIColor *)fillColor
{
    _fillColor = fillColor;
    self.progressLayer.fillColor = fillColor.CGColor;
}

- (void)setClockwise:(BOOL)clockwise
{
    _clockwise = clockwise;
    [self updateLayerPath];
}

- (void)setStartAngle:(CGFloat)startAngle
{
    _startAngle = startAngle;
    [self updateLayerPath];
}

- (void)setProgress:(CGFloat)progress
{
    [self setProgress:progress animated:NO];
}

- (void)setProgress:(CGFloat)progress animated:(BOOL)animated
{
    if (animated) {  // 这里的动画可以直接使用CABasicAnimation
        POPBasicAnimation *basicAnim = [POPBasicAnimation animationWithPropertyNamed:kPOPShapeLayerStrokeEnd];
        if (basicAnim) {
            basicAnim.duration = kAnimTimeInterval;
            basicAnim.toValue = @(progress);
        } else {
            basicAnim = [POPBasicAnimation animationWithPropertyNamed:kPOPShapeLayerStrokeEnd];
            basicAnim.fromValue = @(self.progressLayer.strokeEnd);
            basicAnim.toValue = @(progress);
            basicAnim.duration = 4 * kAnimTimeInterval;
            basicAnim.removedOnCompletion = YES;
        }
        @weakify(self);
        basicAnim.completionBlock = ^(POPAnimation *anim, BOOL finished) {
            @strongify(self);
            POPPropertyAnimation *basicAnim = (POPPropertyAnimation *)anim;
            self.progressLayer.strokeEnd = [basicAnim.toValue doubleValue];
            if (self.progressLayer.strokeEnd >= 1.0 && _progressFullTintColor) {
                self.progressLayer.strokeEnd = 1.0;
                self.progressLayer.strokeColor = _progressFullTintColor.CGColor;
            }
        };
        [self.progressLayer pop_addAnimation:basicAnim forKey:kPOPShapeLayerStrokeEnd];
    } else {
        self.progressLayer.strokeEnd = progress;
        if (self.progressLayer.strokeEnd >= 1.0 && _progressFullTintColor) {
            self.progressLayer.strokeEnd = 1.0;
            self.progressLayer.strokeColor = _progressFullTintColor.CGColor;
        }
    }
}

@end