想在两个控件之间画虚线,有如下代码,不知为何不能画出来;
- (void)drawRect:(CGRect)rect { CGContextRef context = UIGraphicsGetCurrentContext(); CGContextBeginPath(context); CGContextSetLineWidth(context, 5.0); CGContextSetStrokeColorWithColor(context, [UIColor redColor].CGColor); CGFloat lengths[] = {10,10}; CGContextSetLineDash(context, 0, lengths, 5); CGContextMoveToPoint(context, 10.0, 20.0); CGContextAddLineToPoint(context, 310.0,20.0); // CGContextMoveToPoint(context, _strategyImageView1.frame.origin.x + 101, _strategyImageView1.frame.origin.y + 25); // CGContextAddLineToPoint(context, _strategyImageView2.frame.origin.x, _strategyImageView2.frame.origin.y + 25); CGContextStrokePath(context); CGContextClosePath(context); }
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There is nothing wrong with the code itself, you can draw a dotted line
Will it be covered by other controls? Open the hierarchy page and take a look