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; i<count; i++) {
int 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