#import <UIKit/UIKit.h> @interface CircleProgressView : UIView /**起始值(0-1)*/ @property(nonatomic,assign)CGFloat fstartValue; /**边框宽度*/ @property(nonatomic,assign)CGFloat flineWidth; /**线条颜色*/ @property(nonatomic,strong)UIColor *lineColor; /**变化的值*/ @property(nonatomic,assign)CGFloat fvalue; @end #import "CircleProgressView.h" @interface CircleProgressView () { CAShapeLayer *_shapeLayer; } @end @implementation CircleProgressView @synthesize fstartValue=_fstartValue; @synthesize flineWidth=_flineWidth; @synthesize lineColor=_lineColor; @synthesize fvalue=_fvalue; - (instancetype)initWithFrame:(CGRect)frame { self = [super initWithFrame:frame]; if (self) { /**创建带形状的图层*/ _shapeLayer=[CAShapeLayer layer]; _shapeLayer.frame = self.bounds; _shapeLayer.strokeEnd = 0.f; /*创建布赛尔曲线*/ UIBezierPath *path = [UIBezierPath bezierPathWithOvalInRect:self.bounds]; /**把图层和不塞尔曲线通过path进行关联*/ _shapeLayer.path = path.CGPath; /**设置图层的填充颜色、宽度、边框颜色*/ _shapeLayer.fillColor = [UIColor clearColor].CGColor; _shapeLayer.lineWidth = 1.0f; _shapeLayer.strokeColor = [UIColor redColor].CGColor; [self.layer addSublayer:_shapeLayer]; } return self; } /** * @brief 重写fstartValue的setter方法 * @param fstartValue 设置圆形strokeStart起始值 * @since */ - (void)setFstartValue:(CGFloat)fstartValue { _fstartValue = fstartValue; _shapeLayer.strokeStart = fstartValue; } - (CGFloat)fstartValue { return _fstartValue; } /** * @brief 重写flineWidth的setter方法 * @param flineWidth 设置圆形边框宽度 * @since */ - (void)setFlineWidth:(CGFloat)flineWidth { _flineWidth = flineWidth; _shapeLayer.lineWidth = flineWidth; } /** * @brief 重写lineColor的setter方法 * @param lineColor 设置圆形边框颜色 * @since */ - (void)setLineColor:(UIColor *)lineColor { _lineColor = lineColor; _shapeLayer.strokeColor = lineColor.CGColor; } - (UIColor *)lineColor { return _lineColor; } /** * @brief 重写fvalue的setter方法 * @param lineColor 设置圆形的strokeEnd值 * @since */ - (void)setFvalue:(CGFloat)fvalue { _fvalue = fvalue; _shapeLayer.strokeEnd = fvalue; } - (CGFloat)fvalue { return _fvalue; } @end #import "ViewController.h" #import "CircleProgressView.h" @interface ViewController () { CircleProgressView *progress; } @end @implementation ViewController - (void)viewDidLoad { [super viewDidLoad]; progress = [[CircleProgressView alloc]initWithFrame:CGRectMake(0, 0, 200, 200)]; progress.center = self.view.center; progress.lineColor = [UIColor redColor]; progress.flineWidth = 1.0f; progress.fstartValue = 0; [self.view addSubview:progress]; [NSTimer scheduledTimerWithTimeInterval:1.0f target:self selector:@selector(circleAnimation) userInfo:nil repeats:YES]; } - (void)circleAnimation { progress.fvalue = arc4random()%100/100.f; } - (void)didReceiveMemoryWarning { [super didReceiveMemoryWarning]; } @end