iOS学习应用开发就业课_009:UIViewController的使用

练习：

1.//视图的3个状态：

a.显示前

b.正处于显示状态

c.已经被影藏

2.切换页面:ViewController和View02

复习次数：

5月26日

5月27日

5月28日

6月6日失败

代码：

//

//  ViewController.m

//  0606

//

//  Created by Encore on 16/6/6.

//  Copyright © 2016年 trauson. All rights reserved.

//

#import "ViewController.h"

#import "View02.h"

@interface ViewController ()

@end

@implementation ViewController

//1

- (void)viewDidLoad {

    [super viewDidLoad];

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

    NSLog(@"程序第一次加载视图时的调用");

    self.view.backgroundColor=[UIColor yellowColor];

}

//4视图分为：消失后

-(void)viewDidDisappear:(BOOL)animated

{

    NSLog(@"视图已经被影藏");

}

//2显示前

-(void)viewWillAppear:(BOOL)animated

{

    NSLog(@"视图即将显示");

}

//3

-(void)viewWillDisappear:(BOOL)animated

{

    NSLog(@"视图即将消失");

}

-(void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event

{

    View02* myView=[[View02 alloc] init];

    

    [self presentViewController:myView animated:YES completion:nil];

    

}

- (void)didReceiveMemoryWarning {

    [super didReceiveMemoryWarning];

    // Dispose of any resources that can be recreated.

}

@end

View02的页面：

#import "View02.h"

#import "ViewController.h"

@interface View02 ()

@end

@implementation View02

- (void)viewDidLoad {

    [super viewDidLoad];

    // Do any additional setup after loading the view.

    self.view.backgroundColor=[UIColor blackColor];

    NSLog(@"View02同步显示！");

}

- (void)didReceiveMemoryWarning {

    [super didReceiveMemoryWarning];

    // Dispose of any resources that can be recreated.

}

-(void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event

{

    [self dismissViewControllerAnimated:YES completion:nil];

}

//4视图分为：消失后

-(void)viewDidDisappear:(BOOL)animated

{

    NSLog(@"View02视图已经被影藏");

}

//2显示前

-(void)viewWillAppear:(BOOL)animated

{

    NSLog(@"View02视图即将显示");

}

//3

-(void)viewWillDisappear:(BOOL)animated

{

    NSLog(@"View02视图即将消失");

}

/*

#pragma mark - Navigation

// In a storyboard-based application, you will often want to do a little preparation before navigation

- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {

    // Get the new view controller using [segue destinationViewController].

    // Pass the selected object to the new view controller.

}

*/

@end