项目中有画水平虚线和竖直虚线的需求，便在网上参考了别人的水平虚线画法，子类化了竖直虚线的DashLineView
DashLineView.h
@interface DashLineView : UIView
- (instancetype)initWithFrame:(CGRect)frame withLineLength:(NSInteger)lineLength withLineSpacing:(NSInteger)lineSpacing withLineColor:(UIColor *)lineColor;
@end
DashLineView.m
- (instancetype)initWithFrame:(CGRect)frame withLineLength:(NSInteger)lineLength withLineSpacing:(NSInteger)lineSpacing withLineColor:(UIColor *)lineColor{
self = [super initWithFrame:frame];
if (self) {
self.backgroundColor = [UIColor whiteColor];
_lineLength = lineLength;
_lineSpacing = lineSpacing;
_lineColor = lineColor;
_height = frame.size.height;
}
return self;
}
// Only override drawRect: if you perform custom drawing.
// An empty implementation adversely affects performance during animation.
- (void)drawRect:(CGRect)rect {
// Drawing code
CGContextRef context =UIGraphicsGetCurrentContext();
CGContextBeginPath(context);
CGContextSetLineWidth(context,1);
CGContextSetStrokeColorWithColor(context, _lineColor.CGColor);
CGFloat lengths[] = {_lineLength,_lineSpacing};
CGContextSetLineDash(context, 0, lengths,2);
CGContextMoveToPoint(context, 0, 0);
CGContextAddLineToPoint(context, 0,_height);
CGContextStrokePath(context);
CGContextClosePath(context);
}
//竖向的虚线
DashLineView *verticalDashLine = [[DashLineView alloc] initWithFrame:CGRectMake(kScreen_Width/2, 75+15, 0.5, 25) withLineLength:6 withLineSpacing:3 withLineColor:[UIColor colorWithHexString:LineGrayColor]];
[self.contentView addSubview:verticalDashLine];
dashline.png
DEMO地址：https://github.com/zhangjiahuan8888/HHDashLine
更多源码请访问github：https://github.com/zhangjiahuan8888
