iOS UI 02 UIimageview 和模态切换

注意这是哪一个文件!!!RootViewController.m

// RootViewController.m

// Ui03 - UIimageView

//

// Created by dllo on 15/11/10.

// Copyright (c) 2015年 dllo. All rights reserved.

//

#import "RootViewController.h"

#import "RootView.h"

#import "SecondViewController.h"

@interface
RootViewController ()

@end

@implementation RootViewController

//ViewController的初始化方法

//- (instancetype)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil

//{

// self = [super initWithNibName: bundle:];

// if (self) {

//

// }

// return self;

//}

- (void)viewWillAppear:(BOOL)animated

{

[super viewWillAppear:animated];

NSLog(@"nihao");

}

- (void)viewDidLoad {

[super
viewDidLoad];

self.view.backgroundColor = [UIColor
whiteColor];

RootView *rootV = [[RootView
alloc]initWithFrame:[[UIScreen
mainScreen] bounds] ];

[self.view
addSubview:rootV];

[rootV release];

UIButton *button = [UIButton
buttonWithType:UIButtonTypeCustom];

button.frame =
CGRectMake(150, 150, 150, 150);

button.backgroundColor = [UIColor
redColor];

[button addTarget:self
action:@selector(buttonAction)
forControlEvents:UIControlEventTouchDragInside];

[self.view
addSubview:button];

NSLog(@"a");

//UIImage - 专门用来管理图片的类,本身不具备显示功能

//UIImageView-
专门用来显示图片的视图

//添加图片的2中方法

//1

// UIImage *image = [UIImage imageNamed:@"image4.jpg"];

// UIImageView *imagev = [[ UIImageView alloc]initWithImage:image];

// imagev.frame = self.view.frame;

// [self.view addSubview:imagev];

// [imagev release];

//2
常用

// UIImageView *imagev = [[UIImageView alloc]initWithFrame:CGRectMake(30, 30, 300, 500)];

// imagev.image = [UIImage imageNamed:@"image9.jpg"];

// [self.view addSubview:imagev];

// [imagev release];

// Do any additional setup after loading the view.

}

- (void)buttonAction

{

//三下回车
秘诀 选中最后一组,敲3次回车

SecondViewController *secondVC = [[SecondViewController
alloc]init];

//切换页面

//参数1,
要切换的界面

//参数2,
是否需要动画特效

//参数3 , block -

[self
presentViewController:secondVC animated:YES
completion:^{

//切换完成调用

// NSLog(@"%d", __LINE__);

}];

//presentViewController会引起引用计数增加

// NSLog(@"%ld", secondVC.retainCount);

//先执行完成此方法(buttonAction),再去切换界面

// NSLog(@"%d", __LINE__);

[secondVC release];

}

- (void)didReceiveMemoryWarning {

[super
didReceiveMemoryWarning];

NSLog(@"接受内存告警");

// Dispose of any resources that can be recreated.

}

/*

#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

//

// SecondViewController.m

// Ui03 - UIimageView

//

// Created by dllo on 15/11/10.

// Copyright (c) 2015年 dllo. All rights reserved.

//

#import "SecondViewController.h"

@interface
SecondViewController ()

@end

@implementation SecondViewController

- (void)viewDidLoad {

[super
viewDidLoad];

self.view.backgroundColor = [UIColor
greenColor];

UIButton *button = [UIButton
buttonWithType:UIButtonTypeCustom];

button.frame =
CGRectMake(150, 150, 150, 150);

button.backgroundColor = [UIColor
redColor];

[button addTarget:self
action:@selector(buttonAction)
forControlEvents:UIControlEventTouchDragInside];

[self.view
addSubview:button];

NSLog(@"bbb");

// Do any additional setup after loading the view.

}

- (void)buttonAction

{

//切回原来界面

//参数1 -
是否需要动画

//参数2 - block-
切换完成调用

//注意新建的rootVc的方式是切换到新的rootVC界面,而非切回原来的rootVC界面

[self
dismissViewControllerAnimated:YES
completion:^{

//NSLog(@"%d", __LINE__);

}];

// NSLog(@"%d", __LINE__);

}

- (void)didReceiveMemoryWarning {

[super
didReceiveMemoryWarning];

// Dispose of any resources that can be recreated.

}

/*

#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

//

// RootView.m

// Ui03 - UIimageView

//

// Created by dllo on 15/11/10.

// Copyright (c) 2015年 dllo. All rights reserved.

//

#import "RootView.h"

@implementation RootView

- (instancetype)initWithFrame:(CGRect)frame

{

self = [super
initWithFrame:frame];

if (self) {

[self
createSubviews];

}

return
self;

}

- (void)createSubviews

{

//UIImage - 专门用来管理图片的类,本身不具备显示功能

//UIImageView-
专门用来显示图片的视图

//添加图片的2中方法

//1

// UIImage *image = [UIImage imageNamed:@"image4.jpg"];

// UIImageView *imagev = [[ UIImageView alloc]initWithImage:image];

// imagev.frame = self.view.frame;

// [self.view addSubview:imagev];

// [imagev release];

//2
常用

self.backgroundColor = [UIColor
whiteColor];

UIImageView *imagev = [[UIImageView
alloc]initWithFrame:CGRectMake(30, 30, 300,500)];

imagev.image = [UIImage
imageNamed:@"image9.jpg"];

[self addSubview:imagev];

[imagev release];

}

@end