李冬强-用代码写view

主要代码

// ViewController.m

// 创建view-709

// Created by apple on 14-7-9.

#import "ViewController.h"

@interface ViewController ()

@end

@implementation ViewController

- (void)viewDidLoad {

[super viewDidLoad];

// Do any additional setup after loading the view, typically from a nib.

// CGPoint origin={0,0};

// CGSize size={50,50};

// CGRect rect={origin,size};

UIView *yellView=[[UIView alloc]init];

yellView.frame=CGRectMake(0, 0, 200, 200);

yellView.backgroundColor=[UIColor yellowColor];

[self.view addSubview:yellView];

UIView *whiteView=[[UIView alloc]init];

whiteView.frame=CGRectMake(0, 0, 100, 100);

whiteView.backgroundColor=[UIColor grayColor];

[yellView addSubview:whiteView];

UIView *redView=[[UIView alloc]init];

redView.frame=CGRectMake(100, 100, 100, 100);

redView.backgroundColor=[UIColor redColor];

[self.view addSubview:redView];

}

- (void)didReceiveMemoryWarning {

[super didReceiveMemoryWarning];

// Dispose of any resources that can be recreated.

}

@end