//1.初始化视图 确定矩形的坐标（x，y） 宽高
self.myView=[[UIView alloc] initWithFrame:CGRectMake(100, 50, 200, 400)];
//2.设置背景色
self.myView.backgroundColor=[UIColor blackColor];
//3.添加子视图到view（父视图）上
[self.view addSubview:self.myView];
//添加父视图（view）背景颜色
self.view.backgroundColor=[UIColor purpleColor];
//4.判断设备屏幕大小
CGRect rectView=self.view.frame;
NSLog(@"%@",NSStringFromCGRect(rectView));
//5.fram相对于父视图的坐标位置 能知道坐标和大小
NSLog(@"myView.fram : %@",NSStringFromCGRect(self.myView.frame));
//6.bounds 只是显示当前视图的大小 不知道坐标
NSLog(@"myView.bounds: %@",NSStringFromCGRect(self.myView.bounds));
//7.center 控件相对于父视图的中心坐标
NSLog(@"%@",NSStringFromCGPoint(self.myView.center));
//8.设置视图中心点坐标
self.myView.center=CGPointMake(300, 350);
//9.改变视图边界
self.myView.bounds=CGRectMake(0, 0, 50, 50);
//10.水平方向平移200个点
self.myView.transform=CGAffineTransformMakeTranslation(200, 0);
//11.垂直方向平移200个点
self.myView.transform=CGAffineTransformMakeTranslation(0, 200);
//12.斜方向平移
self.myView.transform=CGAffineTransformMakeTranslation(10, 200);
//13.设置隐藏视图
self.myView.hidden=YES;
//14.如果子视图超出父视图范围是否裁剪子视图 默认是NO
self.myView.clipsToBounds=YES;
//15.是否可以和用户进行交互,默认为YES
self.myView.userInteractionEnabled=YES;
//初始化视图aView ，bView ,cView
self.aView=[[UIView alloc] initWithFrame:CGRectMake(100, 100, 200, 200)];
self.aView.backgroundColor=[UIColor redColor];
self.bView=[[UIView alloc] initWithFrame:CGRectMake(150, 150, 200, 200)];
self.bView.backgroundColor=[UIColor purpleColor];
self.cView=[[UIView alloc] initWithFrame:CGRectMake(200, 200, 200, 200)];
self.cView.backgroundColor=[UIColor blackColor];
//1.添加子视图
[self.view addSubview:self.aView];
[self.view addSubview:self.bView];
[self.view addSubview:self.cView];
//插入指定视图 在xxx视图的下面
[self.view insertSubview:self.bView aboveSubview:self.aView];
//在xxx视图上面
[self.view insertSubview:self.bView belowSubview:self.aView];
//在指定索引位置插入视图
[self.view insertSubview:self.bView atIndex:0];
//交换子视图的索引位置
[self.view exchangeSubviewAtIndex:2 withSubviewAtIndex:3];
//将子视图放到最后
[self.view sendSubviewToBack:self.cView];
//将子视图放到最前
[self.view bringSubviewToFront:self.aView];