iOS中的UIView的基本属性

#import "AppDelegate.h"

@interface AppDelegate ()

@end

@implementation AppDelegate


- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    self.window = [[[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]] autorelease];;
    //320*568   5s
    //创建一个宽高为200的视图,添加到屏幕的中间
    //视图的位置是相对于父视图左边原点的位置
    //UIView 重要属性
    //1.frame包含orgin(左上角坐标),seze(矩形的大小)
    //2.center 视图相对对父视图坐标系的中心点
    //3.bounds 发生变化,影响的是自身坐标系的坐标原点,进而影响子视图的位置变化
    
    
    
//    UIView *centerView = [[UIView alloc] initWithFrame:CGRectMake(60,184, 200, 200)];
//    [self.window addSubview:centerView];
//    centerView.backgroundColor = [UIColor redColor];
//    
//    [centerView release];
//    
//    
//    //更改centerview相对自身坐标系的位置
//    //centerView自己位置没有遍,bounds改变的是centeView自己的坐标原点
//    //造成centerView字视图的位置改变
//    centerView.bounds = CGRectMake(50, 50, 200, 200);
//    
//    
//    //创建一个宽高为100的视图,添加到屏幕的中间
//    UIView *centerView1 = [[UIView alloc] initWithFrame:CGRectMake(50, 50, 100, 100)];
//    [centerView addSubview:centerView1];
//    centerView1.backgroundColor = [UIColor greenColor];
//    
//    [centerView1 release];
//    
    
    UIView *centerView1 = [[UIView alloc] initWithFrame:CGRectMake(50, 50, 100, 100)];
    [self.window addSubview:centerView1];
    centerView1.backgroundColor = [UIColor redColor];
    
    [centerView1 release];
    
    
    UIView *centerView2 = [[UIView alloc] initWithFrame:CGRectMake(50+80, 50+80, 100, 100)];
    [self.window addSubview:centerView2];
    centerView2.backgroundColor = [UIColor greenColor];
    
    [centerView2 release];
    
    UIView *centerView3 = [[UIView alloc] initWithFrame:CGRectMake(50+80+80, 50+80+80, 100, 100)];
    [self.window addSubview:centerView3];
    centerView3.backgroundColor = [UIColor yellowColor];
    
    [centerView3 release];
    
    
    UIView *centerView4 = [[UIView alloc] initWithFrame:CGRectMake(50+80, 50+80+80+80, 100, 100)];
    [self.window addSubview:centerView4];
    centerView4.backgroundColor = [UIColor grayColor];
    
    [centerView4 release];
    
    UIView *centerView5 = [[UIView alloc] initWithFrame:CGRectMake(50, 50+80+80+80+80, 100, 100)];
    [self.window addSubview:centerView5];
    centerView5.backgroundColor = [UIColor orangeColor];
    
    [centerView5 release];
    
    //打印brownView的父视图
    NSLog(@"%@",centerView1.superview);
    
    //打印window的子视图
    NSLog(@"%@",self.window.subviews);
    
    
    //创建一个灰色视图
    UIView *blackView = [[UIView alloc] initWithFrame:CGRectMake(50, 100, 200, 200)];
    blackView.backgroundColor = [UIColor blackColor];
    [self.window addSubview:blackView];
    //将视图插入指定位置
    //[self.window insertSubview:blackView atIndex:0];
    //在指定视图的下面
    //[self.window insertSubview:blackView belowSubview:centerView1];
    //在指定视图的上面
    //[self.window insertSubview:blackView aboveSubview:centerView1];
    [blackView release];
    //交换两个视图
    //[self.window exchangeSubviewAtIndex:0 withSubviewAtIndex:1];
    //将视图移到最前面
    //[self.window sendSubviewToBack:centerView1];
    //将视图移到最后面
    //[self.window bringSubviewToFront:centerView2];
    
    
    //删除指定视图
    //[centerView2 removeFromSuperview];
    //视图间的层级关系
    //1.子视图肯定会在父视图的前面
    //2.后添加的视图如果和之前的视图有重叠的部分,会覆盖掉之前的视图
    //3.如果要插入或者改变视图的层级关系,都需要父视图来管理
    //4.父视图通过数组来管理子视图的层级关系
    //5.如果想从父视图上移除,自己移除即可 例如[centerView2 removeFromSuperview];
    
    
    
    
    
    
    
    // Override point for customization after application launch.
    self.window.backgroundColor = [UIColor whiteColor];
    [self.window makeKeyAndVisible];
    return YES;
}