相关疑难解决方法(0)

鉴于以下CAShapeLayer是否可以在提示处添加如下图所示的阴影？

我用a UIBezierPath来绘制条形图.

- (CAShapeLayer *)gaugeCircleLayer {

    if (_gaugeCircleLayer == nil) {

        _gaugeCircleLayer = [CAShapeLayer layer];
        _gaugeCircleLayer.lineWidth = self.gaugeWidth;
        _gaugeCircleLayer.fillColor = [UIColor clearColor].CGColor;
        _gaugeCircleLayer.strokeColor = self.gaugeTintColor.CGColor;
        _gaugeCircleLayer.strokeStart = 0.0f;
        _gaugeCircleLayer.strokeEnd = self.value;
        _gaugeCircleLayer.lineCap = kCALineCapRound;
        _gaugeCircleLayer.masksToBounds = NO;
        _gaugeCircleLayer.cornerRadius = 8.0;
        _gaugeCircleLayer.shadowRadius = 8.0;
        _gaugeCircleLayer.shadowColor = [UIColor blackColor].CGColor;
        _gaugeCircleLayer.shadowOpacity = 0.5;
        _gaugeCircleLayer.shadowOffset = CGSizeMake(0.0, 0.0);
        _gaugeCircleLayer.path = [self circlPathForCurrentGaugeStyle].CGPath;
    }

    return _gaugeCircleLayer;
}

它需要应用于此UIBezierPath:

- (UIBezierPath *)insideCirclePath {

    CGPoint arcCenter = CGPointMake(CGRectGetMidX(self.bounds), CGRectGetMidY(self.bounds));
    UIBezierPath *path = [UIBezierPath …