UI01-UIView(示例代码)

#import "AppDelegate.h"

@interface AppDelegate ()
@property(nonatomic,assign)NSArray *apps;
@end


@implementation AppDelegate

-(void)dealloc
{
    [_window release];
    [super dealloc];
}


- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    // Override point for customization after application launch.

#if 0
    //UI添加代码的地方

    /*
     * 创建UI工程的步骤(Single View)
     * 1. 删除ViewController.h 和 .m文件
     * 2. 工程文件中 general选项中 删除Main Interface处的Main
     * 3. 工程文件中 build setting 选项中 ARC ->MRC
     * 4. Applocation.h中 strong -> retain
     * 5. Application.m中 添加dealloc方法
     * 6. application.m中 创建 UIWindow
     */

    //创建UIWindow  系统自动触发
    // [UIScreen mainScreen].bounds  屏幕大小
    // frame  矩形大小
    self.window = [[UIWindow alloc]initWithFrame:[UIScreen mainScreen].bounds];

    //设置颜色
    self.window.backgroundColor = [UIColor cyanColor];

    //设置为主视图,可见
    [self.window makeKeyAndVisible];
    //Xcode 7.0 解决崩溃 不允许没有跟视图控制器
    self.window.rootViewController = [[UIViewController alloc]init];

    //视图类 UIView(视图类基类 BaseClass)
    // 1.  创建对象 设置frame属性
    UIView *oneView = [[UIView alloc]initWithFrame:CGRectMake(0, 0, 100, 100)];

    // 2. 使用对象 设置属性
    [oneView setBackgroundColor:[UIColor yellowColor]];

    // 3. 将视图（oneView）添加到某处（window）显示
    // oneview 称之为 子试图
    // self.window  称之为 父视图
    [self.window addSubview:oneView];

    // 4. 内存管理
    [oneView release];

    // 设置属性
    oneView.frame = CGRectMake(100, 100, 100, 100);

    // 每一个视图对象都有一个子视图数组和父视图
    // 子视图数组
    // 包含在当前视图上添加所有的子视图对象
    NSLog(@"subView: %@ ",self.window.subviews);
    // 父视图
    NSLog(@" superView: %@ ",oneView.superview);

    //打印屏幕尺寸 ()
    NSLog(@"%@",NSStringFromCGRect(self.window.frame));

    /***   UIView重要属性   ***/
    // center 中心点
    // CGXXXMake()函数 快速创建对类型的结构体
    // center被修改时 视图起始点会发生变化
    oneView.center = CGPointMake(100, 100);

    /***<    hidden 隐藏／显示    >***/
    oneView.hidden = YES;

    /***<    alpha 透明度    >***/
    // 0.0(透明) －> 1.0(不透明)
    oneView.alpha = 1.0;

    /***<    tag 标记值    >***/
    // 通过标记间接访问对应视图
    oneView.tag = 1000;

    //根据标记获取对象
    UIView *tagView = [self.window viewWithTag:1000];
    tagView.backgroundColor = [UIColor whiteColor];

    //内存管理
    [_window release];

#endif

    // 练习:
    // 1.创建两个视图blueView/redView
    // 2.尝试修改各种UIView属性(尝试两个视图相交) 查看变化
    // 3.将blueView的父视图由self.window->redView 查看变化
    // 4.修改blueView的属性 查看变化

    self.window = [[UIWindow alloc]initWithFrame:[UIScreen mainScreen].bounds];

    self.window.backgroundColor = [UIColor colorWithRed:248/255.0 green:195/255.0 blue:205/255.0 alpha:1];

    [self.window makeKeyAndVisible];

    self.window.rootViewController = [[UIViewController alloc]init];
    /*
    UIView *blueView = [[UIView alloc]initWithFrame:CGRectMake(50, 50, 100, 100)];
    blueView.backgroundColor = [UIColor blueColor];
    blueView.hidden = NO;
    blueView.alpha = 0.5;
    [self.window addSubview:blueView];

    UIView *redView = [[UIView alloc]initWithFrame:CGRectMake(100, 100, 100, 100)];
    redView.backgroundColor = [UIColor redColor];
    [self.window addSubview:redView];
    redView.hidden = NO;
    redView.alpha = 0.5;


    // 父视图的属性修改 子试图也会跟随变化
    // frame 设置时的坐标系 参照物为当然的父视图 坐标原点为父视图的左上角

    [redView addSubview:blueView];

    [redView release];
    [blueView release];
     */
#if 0
    // aView
    UIView *aView = [[UIView alloc]initWithFrame:CGRectMake(100, 100, 100, 100)];

    aView.backgroundColor = [UIColor cyanColor];

    [self.window addSubview:aView];

    [aView release];

    //bView
    UIView *bView = [[UIView alloc]initWithFrame:aView.frame];

    bView.backgroundColor = [UIColor yellowColor];

    [self.window addSubview:bView];

    [bView release];
    //操作层级关系
    // 拿到前端 front

    //[self.window bringSubviewToFront:aView];

    // 放到最后 back
    //[self.window sendSubviewToBack:bView];

    // 移除视图 remove
    //[bView removeFromSuperview];

    // 定时器 NSTimer
    // 每隔固定时间让某个对象执行某个方法
    // 参数1 时间间隔
    // 参数2 某个对象
    // 参数3 某个方法
    // 参数5 是否重复
    UIView *temp = [[UIView alloc]initWithFrame:CGRectMake(100, 100, 100, 100)];
    temp.backgroundColor = [UIColor whiteColor];
    [self.window addSubview:temp];
    temp.tag = 1000;
    [NSTimer scheduledTimerWithTimeInterval:1 target:self selector:@selector(repeat) userInfo:nil repeats:YES];
#endif

#warning homework-one

#if 0
    /*
    创建5个UIView
    要求 ：
    1.命名 view1 ~ view5
    2.分别设置背景颜色红、黄、绿、蓝、灰
    3.位置与大小自定义。
    4.设置UIView常用属性。（数据自定）
    */

    UIView *view1 = [[UIView alloc]initWithFrame:CGRectMake(50, 50, 100, 100)];
    UIView *view2 = [[UIView alloc]initWithFrame:CGRectMake(70, 70, 100, 100)];
    UIView *view3 = [[UIView alloc]initWithFrame:CGRectMake(90, 90, 100, 100)];
    UIView *view4 = [[UIView alloc]initWithFrame:CGRectMake(110, 110, 100, 100)];
    UIView *view5 = [[UIView alloc]initWithFrame:CGRectMake(130, 130, 100, 100)];

    view1.backgroundColor = [UIColor redColor];
    view2.backgroundColor = [UIColor yellowColor];
    view3.backgroundColor = [UIColor greenColor];
    view4.backgroundColor = [UIColor blueColor];
    view5.backgroundColor = [UIColor lightGrayColor];

    [self.window addSubview:view1];
    [self.window addSubview:view2];
    [self.window addSubview:view3];
    [self.window addSubview:view4];
    [self.window addSubview:view5];

    view5.alpha = 0.5;
    view4.hidden = YES;
    view4.center = CGPointMake(150, 150);

    [view1 release];
    [view2 release];
    [view3 release];
    [view4 release];
    [view5 release];
#endif

#warning homework-second

#if 0
    /*****    <使用UIView搭建界面>    *****/

    UIView *view1 = [[UIView alloc]initWithFrame:CGRectMake(40, 60, 80, 40)];
    UIView *view2 = [[UIView alloc]initWithFrame:CGRectMake(40, 130, 80, 40)];

    UIView *view3 = [[UIView alloc]initWithFrame:CGRectMake(160, 60, 120, 40)];
    UIView *view4 = [[UIView alloc]initWithFrame:CGRectMake(160, 130, 120, 40)];

    UIView *view5 = [[UIView alloc]initWithFrame:CGRectMake(80, 200, 60, 40)];
    UIView *view6 = [[UIView alloc]initWithFrame:CGRectMake(170, 200, 60, 40)];

    view1.backgroundColor = [UIColor cyanColor];
    view2.backgroundColor = [UIColor cyanColor];
    view3.backgroundColor = [UIColor cyanColor];
    view4.backgroundColor = [UIColor cyanColor];
    view5.backgroundColor = [UIColor cyanColor];
    view6.backgroundColor = [UIColor cyanColor];

    [self.window addSubview:view1];
    [self.window addSubview:view2];
    [self.window addSubview:view3];
    [self.window addSubview:view4];
    [self.window addSubview:view5];
    [self.window addSubview:view6];

    [view6 release];
    [view5 release];
    [view4 release];
    [view3 release];
    [view2 release];
    [view1 release];
#endif

#warning homework thrid

#if 1

    /*****    <使用UIView搭建界面>    *****/
    int totalloc=3;
     CGFloat appvieww=80;
     CGFloat appviewh=90;

     CGFloat margin=(self.window.frame.size.width-totalloc*appvieww)/(totalloc+1);
     int count=self.apps.count;
     for (int i=0; iint row=i/totalloc;//行号
         //1/3=0,2/3=0,3/3=1;
         int loc=i%totalloc;//列号

         CGFloat appviewx=margin+(margin+appvieww)*loc;

         CGFloat appviewy=margin+(margin+appviewh)*row;

        UIView *appview=[[UIView alloc]initWithFrame:CGRectMake(appviewx, appviewy, appvieww, appviewh)];
        [appview setBackgroundColor:[UIColor purpleColor]];
        [self.window addSubview:appview];

                appview.tag = 1000;
        [NSTimer scheduledTimerWithTimeInterval:1 target:self selector:@selector(repeat) userInfo:nil repeats:YES];
         [self.window addSubview:appview];









#endif

    [_window release];




    }
    return YES;
}

-(void)repeat
{
    UIView *appview = [self.window viewWithTag:1000];
    appview.backgroundColor = [UIColor colorWithRed:arc4random() % 256 / 255.0 green:arc4random() % 256 / 255.0 blue:arc4random() % 256 / 255.0 alpha:1];
    [self.window addSubview:appview];
}
@end