摘要: - (void)drawRect:(CGRect)rect { [super drawRect:rect]; //步骤一:得到当前绘制画布上下文,用于后续将内容绘制在画布上 CGContextRef context = UIGraphicsGetCurrentContext(); ... 阅读全文
posted @ 2015-07-12 21:33 zhanggui 阅读(282) 评论(0) 推荐(0) 编辑