Question

ios开发 怎么设置一个视图的锚点

Answer 1

刚刚找到答案： UIColor *taskColor = [UIColor colorWithRed:0.98f green:0.92f blue:0.80f alpha:1.0f]; UIButton *taskBtn = [[UIButton alloc] initWithFrame:CGRectMake(40, 150, 280, 160)]; taskBtn.backgroundColor = taskColor; CALayer *bottomBorder = [CALayer layer]; float height=taskBtn.frame.size.height-1.0f; float width=taskBtn.frame.size.width; bottomBorder.frame = CGRectMake(0.0f, height, width, 1.0f); bottomBorder.backgroundColor = [UIColor redColor].CGColor; [taskBtn.layer addSublayer:bottomBorder];