- func insertSubview(view: UIView,atIndex index: Int)
- func addSubview(view: UIView)
- func insertSubview(view: UIView,belowSubview siblingSubview: UIView)
- func insertSubview(view: UIView,aboveSubview siblingSubview: UIView)
首先 addSubview 最常见就是普通的添加
我们看下效果
- let view1=UIView(frame: CGRectMake(10,50,200,200))
- let view2=UIView(frame: CGRectMake(170,210,200))
- view1.backgroundColor=UIColor.redColor()
- view2.backgroundColor=UIColor.greenColor()
- self.view.addSubview(view1)
- self.view.addSubview(view2)
解析来我们获取一下 self.view的子视图,然后就知道刚才添加的两个视图的index
- var arr:[AnyObject]
- arr = self.view.subviews;
- println("arr=%d",arr.count)
结果为4,那么view1 index为2,view2的index为3
下来我们看下这个方法
insertSubview(view: UIView,atIndex index: Int)
将view添加上来
- let blueView=UIView(frame: CGRectMake(90,130,200))
- blueView.backgroundColor=UIColor.blueColor()
- self.view.insertSubview(blueView,atIndex: 3)
效果如下
我们可以看到 blueView添加到了view1和view2之间了
下来我们两个方法一起比较来看
- func insertSubview(view: UIView,aboveSubview siblingSubview: UIView)
- let orangeView=UIView(frame: CGRectMake(50,90,200))
- orangeView.backgroundColor=UIColor.orangeColor()
- self.view.insertSubview(orangeView,belowSubview: blueView)
- let purpleView=UIView(frame: CGRectMake(130,170,200))
- purpleView.backgroundColor=UIColor.purpleColor()
- self.view.insertSubview(purpleView,aboveSubview: blueView)
效果如下
我们看到他是讲新的两个view分别添加打了 blueview的上边和下边
好了,大家再研究一下
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