上一篇文章已经对ios页面进行了说明，接下来就是使用页面，给页面中添加子控件，在上面两篇创建的项目中，进行些许修改，成了现在的。先看效果：
效果：
代码：
修改ViewController
//
// ViewController.m
// HelloIOS
//
// Created by Moluth on 17/4/10.
// Copyright (c) 2017年 Moluth. All rights reserved.
//
#import "ViewController.h"
@interface ViewController ()
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
self.view.backgroundColor=[[UIColor alloc] initWithRed:0.3f green:0.35f blue:0.85f alpha:1.0f];
UIView *view1=[[UIView alloc] initWithFrame:CGRectMake(0, 0, 100, 100)]//创建view ，view是矩形，0，0表示左上角坐标，后面的100，100代表宽高
view1.backgroundColor=[[UIColor alloc] initWithRed:0.88f green:0.66f blue:0.11f alpha:0.8f];//给新创建的view设置背景颜色，便于观察
[self.view addSubview:view1];//向ViewController中的view中添加子View
//下面代码都是对上面的复制和修改，仅仅是坐标和颜色不同
UIView *view2=[[UIView alloc] initWithFrame:CGRectMake(30, 30, 100, 100)];
view2.backgroundColor=[[UIColor alloc] initWithRed:1.0f green:0.0f blue:0.6f alpha:0.8f];
[self.view addSubview:view2];
UIView *view3=[[UIView alloc] initWithFrame:CGRectMake(60, 60, 100, 100)];
view3.backgroundColor=[[UIColor alloc] initWithRed:1.0f green:1.0f blue:0.6f alpha:0.8f];
[self.view addSubview:view3];
UIView *view4=[[UIView alloc] initWithFrame:CGRectMake(90, 90, 100, 100)];
view4.backgroundColor=[[UIColor alloc] initWithRed:0.0f green:1.0f blue:0.0f alpha:0.8f];
[self.view addSubview:view4];
//self.view
// Do any additional setup after loading the view, typically from a nib.
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
@end