您好,登录后才能下订单哦!
密码登录
登录注册
点击 登录注册 即表示同意《亿速云用户服务条款》
这篇文章主要介绍iOS中UIBezierPath实现饼状图的方法,文中介绍的非常详细,具有一定的参考价值,感兴趣的小伙伴们一定要看完!
首先看效果图:
代码:
#import <UIKit/UIKit.h> NS_ASSUME_NONNULL_BEGIN @interface CircleView : UIView @property (nonatomic, copy) NSArray<NSNumber *> *valueArray; @end NS_ASSUME_NONNULL_END // #define S_W self.frame.size.width #import "CircleView.h" @interface CircleView () @property (nonatomic, copy) NSArray<NSNumber *> *dataArray; @property (nonatomic, assign) CGFloat endAngleFloat; // 每个扇形起点角度 @end @implementation CircleView - (void)setValueArray:(NSArray<NSNumber *> *)valueArray { self.dataArray = valueArray; self.endAngleFloat = 0; [self creatUI]; } - (void)creatUI { for (NSInteger i = 0; i<_dataArray.count; i++) { CAShapeLayer *shapeLayer = [CAShapeLayer layer]; shapeLayer.lineWidth = 1; shapeLayer.fillColor = [UIColor colorWithRed:arc4random()%256/255.0f green:arc4random()%256/255.0f blue:arc4random()%256/255.0f alpha:1].CGColor; shapeLayer.strokeColor = shapeLayer.fillColor; CGFloat valueFloat = [_dataArray[i] floatValue]; CGFloat angleFloat = valueFloat*2*M_PI/100; UIBezierPath *bezierPath = [UIBezierPath bezierPath]; [bezierPath moveToPoint:CGPointMake(S_W/2, S_W/2)]; [bezierPath addLineToPoint:CGPointMake(S_W*(1+cos(_endAngleFloat))/2, S_W*(1+sin(_endAngleFloat))/2)]; [bezierPath addArcWithCenter:CGPointMake(S_W/2, S_W/2) radius:S_W/2 startAngle:_endAngleFloat endAngle:angleFloat+_endAngleFloat clockwise:YES]; [bezierPath closePath]; shapeLayer.path = bezierPath.CGPath; [self.layer addSublayer:shapeLayer]; [self addLabelWithFloat:valueFloat angleFloat:angleFloat]; _endAngleFloat += angleFloat; } } - (void)addLabelWithFloat:(CGFloat)valueFloat angleFloat:(CGFloat)angleFloat { UILabel *label = [[UILabel alloc] init]; label.center = CGPointMake(S_W*(2+cos(angleFloat/2 + _endAngleFloat))/4, S_W*(2+sin(angleFloat/2 + _endAngleFloat))/4); label.bounds = CGRectMake(0, 0, 50, 50); label.text = [NSString stringWithFormat:@"%.f%%",valueFloat]; label.textColor = UIColor.whiteColor; label.textAlignment = NSTextAlignmentCenter; label.font = [UIFont systemFontOfSize:14]; [self addSubview:label]; }
外部调用:
CircleView *view = [[CircleView alloc] initWithFrame:CGRectMake(20, 100, self.view.frame.size.width-40, self.view.frame.size.width-40)]; view.valueArray = @[@(10),@(20),@(30),@(40)]; [self.view addSubview:view];
以上是“iOS中UIBezierPath实现饼状图的方法”这篇文章的所有内容,感谢各位的阅读!希望分享的内容对大家有帮助,更多相关知识,欢迎关注亿速云行业资讯频道!
免责声明:本站发布的内容(图片、视频和文字)以原创、转载和分享为主,文章观点不代表本网站立场,如果涉及侵权请联系站长邮箱:is@yisu.com进行举报,并提供相关证据,一经查实,将立刻删除涉嫌侵权内容。