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 | #import "YHBaseCircleView.h"@implementation YHBaseCircleView
 {
 //进度控件内容尺寸
 float _contentWidth;
 float _contentHeight;
 //形状layer
 CAShapeLayer * _shapeLayer;
 //颜色渐变layer
 CAGradientLayer * _gradLayerR;
 CAGradientLayer * _gradLayerL;
 CALayer * _gradLayer;
 //内容layer
 CAShapeLayer * _contentLayer;
 UILabel * _tipLabel;
 //专门用来更新label
 NSTimer * _timer;
 float _oldProgress;
 //进度新旧进度值
 int old;
 int new;
 }
 
 -(void)awakeFromNib{
 [self reloadView];
 }
 -(instancetype)initWithFrame:(CGRect)frame{
 self = [super initWithFrame:frame];
 if (self) {
 [self reloadView];
 }
 return self;
 }
 
 -(void)reloadView{
 self.backgroundColor = [UIColor clearColor];
 //取设置的frame的最小长或款作为内容区域
 _contentWidth = _contentHeight = CGRectGetWidth(self.frame)>CGRectGetHeight(self.frame)?CGRectGetHeight(self.frame):CGRectGetWidth(self.frame);
 //创建内容layer
 _contentLayer = [CAShapeLayer layer];
 _contentLayer.bounds = CGRectMake(0, 0, _contentWidth, _contentHeight);
 _contentLayer.position = CGPointMake(_contentWidth/2, _contentHeight/2);
 _contentLayer.backgroundColor = [UIColor clearColor].CGColor;
 //进行边界描绘 默认线宽为4px
 UIBezierPath * pathT = [UIBezierPath bezierPathWithArcCenter:_contentLayer.position radius:_contentWidth/2-2 startAngle:-M_PI_2 endAngle:M_PI_2*3 clockwise:YES];
 _contentLayer.path = pathT.CGPath;
 //默认填充颜色为白色
 _contentLayer.fillColor = [UIColor whiteColor].CGColor;
 _contentLayer.lineWidth = 4;
 _contentLayer.strokeColor = [UIColor grayColor].CGColor;
 [self.layer addSublayer:_contentLayer];
 
 _shapeLayer = [CAShapeLayer layer];
 _shapeLayer.bounds = CGRectMake(0, 0, _contentWidth, _contentHeight);
 _shapeLayer.position = CGPointMake(_contentWidth/2, _contentHeight/2);
 _shapeLayer.backgroundColor = [UIColor clearColor].CGColor;
 //    _shapeLayer.lineCap  = kCALineCapRound;
 //进行边界描绘 默认线宽为4px
 UIBezierPath * path = [UIBezierPath bezierPathWithArcCenter:_shapeLayer.position radius:_contentWidth/2-2 startAngle:-M_PI_2 endAngle:M_PI_2*3 clockwise:YES];
 _shapeLayer.path = path.CGPath;
 _shapeLayer.fillColor = [UIColor clearColor].CGColor;
 _shapeLayer.lineWidth = 4;
 _shapeLayer.strokeColor = [UIColor redColor].CGColor;
 //默认黄转橙转红的边界线 分别由两个gradLayer进行控制
 _gradLayer = [CALayer layer];
 _gradLayer.bounds = _contentLayer.bounds;
 _gradLayer.position = _contentLayer.position;
 _gradLayer.backgroundColor = [UIColor clearColor].CGColor;
 _gradLayerL = [CAGradientLayer layer];
 _gradLayerL.bounds = CGRectMake(0, 0, _contentWidth/2, _contentHeight);
 _gradLayerL.locations = @[@0.6];
 [_gradLayerL setColors:@[(id)[UIColor redColor].CGColor,(id)[UIColor orangeColor].CGColor]];
 _gradLayerL.position = CGPointMake(_gradLayerL.bounds.size.width/2, _gradLayerL.bounds.size.height/2);
 [_gradLayer addSublayer:_gradLayerL];
 _gradLayerR = [CAGradientLayer layer];
 _gradLayerR.locations = @[@0.6];
 _gradLayerR.bounds = CGRectMake(_contentWidth/2, 0, _contentWidth/2, _contentHeight);
 [_gradLayerR setColors:@[(id)[UIColor yellowColor].CGColor,(id)[UIColor orangeColor].CGColor]];
 _gradLayerR.position = CGPointMake(_gradLayerR.bounds.size.width/2+_contentWidth/2, _gradLayerR.bounds.size.height/2);
 [_gradLayer addSublayer:_gradLayerR];
 [_gradLayer setMask:_shapeLayer];
 [_contentLayer addSublayer:_gradLayer];
 
 
 //setter方法初始化
 _minLineColor = [UIColor yellowColor];
 _midLineColor = [UIColor orangeColor];
 _maxLineColor = [UIColor redColor];
 _lineTintColor = [UIColor grayColor];
 _progress = 1;
 _lineWidth = 4;
 _lineTintColor = [UIColor grayColor];
 _textColor = [UIColor orangeColor];
 _oldProgress = 1;
 //创建tiplabel
 [self creatTipLabel];
 _timer = [NSTimer scheduledTimerWithTimeInterval:1/60.0 target:self selector:@selector(updateLabel) userInfo:nil repeats:YES];
 _timer.fireDate = [NSDate distantFuture];
 
 }
 
 -(void)removeFromSuperview{
 _timer.fireDate = [NSDate distantFuture];
 [_timer invalidate];
 _timer =nil;
 [super removeFromSuperview];
 }
 -(void)updateLabel{
 if (old<new) {
 old++;
 NSMutableAttributedString * attri = [[NSMutableAttributedString alloc]initWithString:[NSString stringWithFormat:@"%d%%",old]];
 [attri addAttribute:NSFontAttributeName value:[UIFont systemFontOfSize:22] range:NSMakeRange(0, attri.length-1)];
 [attri addAttribute:NSFontAttributeName value:[UIFont systemFontOfSize:15] range:NSMakeRange(attri.length-1, 1)];
 [attri addAttribute:NSForegroundColorAttributeName value:_textColor range:NSMakeRange(0, attri.length)];
 _tipLabel.attributedText = attri;
 }else if (old>new){
 old--;
 NSMutableAttributedString * attri = [[NSMutableAttributedString alloc]initWithString:[NSString stringWithFormat:@"%d%%",old]];
 [attri addAttribute:NSFontAttributeName value:[UIFont systemFontOfSize:22] range:NSMakeRange(0, attri.length-1)];
 [attri addAttribute:NSFontAttributeName value:[UIFont systemFontOfSize:15] range:NSMakeRange(attri.length-1, 1)];
 [attri addAttribute:NSForegroundColorAttributeName value:_textColor range:NSMakeRange(0, attri.length)];
 _tipLabel.attributedText = attri;
 }else{
 _timer.fireDate = [NSDate distantFuture];
 }
 }
 -(void)setMinLineColor:(UIColor *)minLineColor{
 _minLineColor = minLineColor;
 [_gradLayerR setColors:@[(id)_minLineColor.CGColor,(id)_midLineColor.CGColor]];
 [_gradLayerL setColors:@[(id)_maxLineColor.CGColor,(id)_midLineColor.CGColor]];
 }
 -(void)setMidLineColor:(UIColor *)midLineColor{
 _midLineColor = midLineColor;
 [_gradLayerR setColors:@[(id)_minLineColor.CGColor,(id)_midLineColor.CGColor]];
 [_gradLayerL setColors:@[(id)_maxLineColor.CGColor,(id)_midLineColor.CGColor]];
 }
 -(void)setMaxLineColor:(UIColor *)maxLineColor{
 _maxLineColor = maxLineColor;
 [_gradLayerR setColors:@[(id)_minLineColor.CGColor,(id)_midLineColor.CGColor]];
 [_gradLayerL setColors:@[(id)_maxLineColor.CGColor,(id)_midLineColor.CGColor]];
 }
 -(void)setTintColor:(UIColor *)tintColor{
 _lineTintColor = tintColor;
 _contentLayer.strokeColor = tintColor.CGColor;
 }
 -(void)setProgress:(CGFloat)progress{
 _oldProgress = _progress;
 _progress=progress;
 _shapeLayer.strokeStart = 0;
 _shapeLayer.strokeEnd = progress>1?1:progress;
 NSMutableAttributedString * attri ;
 if (progress==1) {
 attri = [[NSMutableAttributedString alloc]initWithString:@"100%"];
 }else{
 attri = [[NSMutableAttributedString alloc]initWithString:[NSString stringWithFormat:@"%2d%%",(int)(progress*100)]];
 }
 [attri addAttribute:NSFontAttributeName value:[UIFont systemFontOfSize:22] range:NSMakeRange(0, attri.length-1)];
 [attri addAttribute:NSFontAttributeName value:[UIFont systemFontOfSize:15] range:NSMakeRange(attri.length-1, 1)];
 [attri addAttribute:NSForegroundColorAttributeName value:_textColor range:NSMakeRange(0, attri.length)];
 _tipLabel.attributedText = attri;
 }
 
 -(void)setProgress:(CGFloat)progress animated:(BOOL)animated{
 _oldProgress = _progress;
 _progress = progress;
 old = (int)(_oldProgress*100);
 new = (int)(_progress*100);
 CABasicAnimation * ani = [CABasicAnimation animationWithKeyPath:@"strokeEnd"];
 ani.toValue = progress>1?@1:@(progress);
 ani.duration = 0.3;
 ani.delegate=self;
 ani.fillMode=kCAFillModeForwards;
 ani.removedOnCompletion=NO;
 [_shapeLayer addAnimation:ani forKey:nil];
 _timer.fireDate = [NSDate distantPast];
 
 }
 - (void)dealloc
 {
 
 }
 -(void)animationDidStop:(CAAnimation *)anim finished:(BOOL)flag{
 if (flag) {
 [_shapeLayer removeAllAnimations];
 _shapeLayer.strokeEnd = _progress>1?1:_progress;
 }
 }
 -(void)setLineWidth:(CGFloat)lineWidth{
 if (lineWidth<0.5) {
 lineWidth=0.5;
 }
 if (lineWidth>20) {
 lineWidth = 20;
 }
 _lineWidth = lineWidth;
 UIBezierPath * path = [UIBezierPath bezierPathWithArcCenter:_shapeLayer.position radius:_contentWidth/2-lineWidth/2 startAngle:-M_PI_2 endAngle:M_PI_2*3 clockwise:YES];
 _shapeLayer.path = path.CGPath;
 _shapeLayer.fillColor = [UIColor clearColor].CGColor;
 _shapeLayer.lineWidth = lineWidth;
 _shapeLayer.strokeColor = [UIColor redColor].CGColor;
 [_gradLayer setMask:_shapeLayer];
 UIBezierPath * pathT = [UIBezierPath bezierPathWithArcCenter:_contentLayer.position radius:_contentWidth/2-lineWidth/2 startAngle:-M_PI_2 endAngle:M_PI_2*3 clockwise:YES];
 _contentLayer.path = pathT.CGPath;
 _contentLayer.lineWidth = lineWidth;
 
 }
 -(void)setTextColor:(UIColor *)textColor{
 _textColor = textColor;
 NSMutableAttributedString * attr = [[NSMutableAttributedString alloc]initWithAttributedString:_tipLabel.attributedText];
 [attr addAttribute:NSForegroundColorAttributeName value:textColor range:NSMakeRange(0, attr.length)];
 _tipLabel.attributedText = attr;
 }
 -(void)creatTipLabel{
 _tipLabel = [[UILabel alloc]initWithFrame:CGRectMake(0, 0, sqrt(2)/2*(_contentWidth-_lineWidth*2), sqrt(2)/2*(_contentWidth-_lineWidth*2))];
 _tipLabel.center = CGPointMake(self.frame.size.width/2, self.frame.size.height/2);
 _tipLabel.backgroundColor = [UIColor clearColor];
 _tipLabel.textAlignment = NSTextAlignmentCenter;
 NSMutableAttributedString * attri = [[NSMutableAttributedString alloc]initWithString:@"100%"];
 [attri addAttribute:NSFontAttributeName value:[UIFont systemFontOfSize:22] range:NSMakeRange(0, 3)];
 [attri addAttribute:NSFontAttributeName value:[UIFont systemFontOfSize:15] range:NSMakeRange(3, 1)];
 [attri addAttribute:NSForegroundColorAttributeName value:[UIColor orangeColor] range:NSMakeRange(0, 4)];
 _tipLabel.attributedText = attri;
 [self addSubview:_tipLabel];
 }
 @end
 
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