UI入门 纯代码 第一节 UIWindow, UIView 

 //一下为纯代码写的工程,所以先要删掉左侧的 StoryBoard,然后点击左侧最上面那行,就是你的工程刚进来的时候那个页面,删掉 interface Main中的 Main

 1　　  //初始化window,并设置大小
 2 　 　self.window = [[UIWindow alloc] initWithFrame:[UIScreen mainScreen].bounds];
 3     //设置window背景颜色 白色
 4     self.window.backgroundColor = [UIColor whiteColor];
 5     
 6     [self.window makeKeyAndVisible];
 7     //设置主视图控制器
 8     ViewController *rootVier = [[ViewController alloc] init];
 9     self.window.rootViewController = rootVier;
10     
11     //1.创建UIView对象
12     //初始化aView
13     UIView *aView = [[UIView alloc] init];
14     
15     //2.设置AView背景颜色
16     aView.backgroundColor = [UIColor blackColor];
17     
18     //3.设置frame 位置和大小
19     aView.frame = CGRectMake(100, 300, 100, 100);
20     
21     //4.将aView添加到window视图上
22     [self.window addSubview:aView];
23     
24     UIView *aView2 = [[UIView alloc] init];
25     aView2.backgroundColor = [UIColor grayColor];
26     aView2.frame = CGRectMake(200, 300, 100, 100);
27     [self.window addSubview:aView2];
28     
29     UIView *aView3 = [[UIView alloc] init];
30     aView3.backgroundColor = [UIColor yellowColor];
31     aView3.frame = CGRectMake(100, 400, 100, 100);
32     [self.window addSubview:aView3];
33     
34     UIView *aView4 = [[UIView alloc] init];
35     aView4.backgroundColor = [UIColor redColor];
36     aView4.frame = CGRectMake(200, 400, 100, 100);
37     [self.window addSubview:aView4];
38     
39     UIView *cView = [[UIView alloc] init];
40     //设置cView的大小和位置
41     cView.frame = CGRectMake(CGRectGetMinX(aView4.frame), CGRectGetMaxY(aView4.frame), CGRectGetWidth(aView4.frame), CGRectGetHeight(aView4.frame));
42     [self.window addSubview:cView];
43     
44     UIView *dView = [[UIView alloc] init];
45     dView.backgroundColor = [UIColor yellowColor];
46     dView.frame = CGRectMake(30, 10, 50, 50);
47     [aView addSubview:dView];
48     
49     UIView *eView = [[UIView alloc] init];
50     eView.backgroundColor = [UIColor redColor];
51     eView.frame = CGRectMake(25, 25, 50, 50);
52     [aView2 addSubview:eView];

 

posted @ 2016-03-16 17:40  _小帅  阅读(163)  评论(0)    收藏  举报