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ios 视图切换翻页效果

2014-07-13 00:00 483 查看
本文写的是视图切换,涉及到的内容有

1.实现代码添加Navigation Bar Toolbal;

2.实现在Navigation Bar和Toolbar上用代码添加Bar Button Item;

3.UIView层面的简单动画效果

先把实现结果功能截图贴出来,对应动画效果

开始界面 和第一次向上翻页

向上翻页 和向下翻页

从左向右翻页 和从右向左翻页













开始制作:

1.创建一个新工程叫NVDemo; File->New->Project ->single View Application -> next



2.在新建两个ViewController,分别为FirstViewController和SecondViewController,顺便把XIB一块生成好



3.首先在视图上添加导航栏和导航按钮,经测试导航栏上只能添加两个导航按钮,和设置一个title标题;

我们还需要知道的一个常识是NavigationBar ToolBar Tab Bar 都是44像素,所以在设置他们宽度时候他们的高度设置成44

还有一个通知栏,显示电量信息信号的地方是20像素;

- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.

//    创建导航栏,44像素
UINavigationBar *navigationBar = [[UINavigationBar alloc] initWithFrame:CGRectMake(0, 0, 320, 44)];

//    需要在导航栏上创建按钮,所以先创建一个导航栏集合
UINavigationItem *navagationItem = [[UINavigationItem alloc] initWithTitle:@"导航栏"];

UIBarButtonItem *leftButton = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemAction target:self action:@selector(pageDown:)];

UIBarButtonItem *rightButton = [[UIBarButtonItem alloc]initWithTitle:@"右测试"
style:UIBarButtonItemStyleDone
target:self
action:@selector(leftpage:)];
[navigationBar pushNavigationItem:navagationItem animated:YES];

[navagationItem setLeftBarButtonItem:leftButton animated:YES];
[navagationItem setRightBarButtonItem:rightButton animated:YES];

[self.view addSubview:navigationBar];

UIToolbar *toolBar = [[UIToolbar alloc] initWithFrame:CGRectMake(0, 416, 320, 44)];

NSMutableArray *toolBarArray = [NSMutableArray array];

[toolBarArray addObject:[[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemPageCurl
target:self
action:@selector(switchLoadView:)]];

[toolBarArray addObject:[[UIBarButtonItem alloc]initWithBarButtonSystemItem:UIBarButtonSystemItemSearch
target:self
action:@selector(rightpage:)]];

[toolBarArray addObject:[[UIBarButtonItem alloc]initWithTitle:@"MyTitle"
style:UIBarButtonItemStylePlain
target:self
action:nil]];

//UIToolBar上添加图像
[toolBarArray addObject:[[UIBarButtonItem alloc]initWithImage:[UIImage imageNamed:@"myImage.png"]
style:UIBarButtonItemStylePlain
target:self
action:nil]];

[toolBar setItems:toolBarArray animated:YES];
[self.view addSubview:toolBar];

}


[navigationBar pushNavigationItem:navagationItem animated:YES];涉及到一个压栈的操作,把navigationItem压到navigationBar里,导航栏上只能添加左右两个按钮;所以是setLeftBarButtonItem 和 setRightBarButtonItem,最后再将navigationBar添加到视图之上;

在Toolbar上添加可以添加各种按钮,创建一个可变数组,把添加的按钮全部放到数组上,[toolBar setItems:toolBarArray animated:YES];将数组里按钮集合添加到了toolBar上面,选取图片的时候素材没选好,所以显示出来的图片那个按钮效果不是太好

4.接下来说的是按钮事件,因为需要用到FirstViewController和SecondViewController,在RootViewController.m添加上他们的头文件,为了区别确实是两个视图的切换,在他们的ViewDidLoad函数中初始化视图的背景颜色,

self.view.backgroundColor = [UIColor yellowColor]; 和self.view.backgroundColor = [UIColor redColor];

按钮时间再次也不做过多解释,全部写在注释里了,其他几个都一样,只是修改了动画效果,变化不大,详情可下载源代码研究一下;

-(void) switchLoadView:(id)sender
{

//开始一个动画
[UIView beginAnimations:@"Curl" context:nil];
//    设置动画方式,开始和结束时动画效果比较慢
[UIView setAnimationCurve:UIViewAnimationCurveEaseInOut];
//    动画持续时间
[UIView setAnimationDuration:1.25];
//    设置动画效果,向上翻页
[UIView setAnimationTransition:UIViewAnimationTransitionCurlUp forView:self.view cache:YES];

//    首先判断firstView视图父视图是否为空
if (firstView.view.superview == nil)
{
//        父视图为空,在判断他的子视图是否为空,如果为空在创建一个视图加载上面
if (firstView.view == nil) {
FirstViewController *firstViewDemo = [[FirstViewController alloc] initWithNibName:@"FirstViewController" bundle:nil];
firstView = firstViewDemo;
}
//        把seconView视图从父视图中移除
[secondView.view removeFromSuperview];
//        在当前视图插入子视图firstView的视图
[self.view insertSubview:firstView.view atIndex:0];
}

else {
if (secondView.view == nil)
{
SecondViewController *secondViewDemo = [[SecondViewController alloc] initWithNibName:@"SecondViewController" bundle:nil];
secondView = secondViewDemo;
}
[firstView.view removeFromSuperview];
[self.view insertSubview:secondView.view atIndex:0];
}
//       动画结束
[UIView commitAnimations];
}


附上代码:
http://download.csdn.net/detail/duxinfeng2010/4407717

咱在这在研究一个问题,在RootAppDelegate.m中我们先看看系统生成的代码

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
// Override point for customization after application launch.
self.viewController = [[RootViewController alloc] initWithNibName:@"RootViewController" bundle:nil];
self.window.rootViewController = self.viewController;
[self.window makeKeyAndVisible];
return YES;
}


系统直接加载的就是的RootViewController的视图,也就是弹出第一个界面是RootViewController.xib,假如说我想第一个就显示的FirstViewController控制的视图怎么办? 我们就可以在这个函数中进行重写

在delegateApp.h中@class RootViewController后面添加@class FirstViewController;此处声明一个类,在这样当我们添加@property (strong, nonatomic) FirstViewController *fTestViewController;才不会报错;

只需修改两行代码,此处注释原先加载RootViewController视图的代码,可能是我命名的不够合理,RootViewController和rootViewController要区别开,一个工程建立的,一个是系统本身自动生成的

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
// Override point for customization after application launch.
//    self.viewController = [[RootViewController alloc] initWithNibName:@"RootViewController" bundle:nil];
//    self.window.rootViewController = self.viewController;

self.fTestViewController = [[FirstViewController alloc] initWithNibName:@"FirstViewController" bundle:nil];
//  把根控制视图设置成fTestViewController
self.window.rootViewController = self.fTestViewController;

[self.window makeKeyAndVisible];
return YES;
}


然后再到我们的FirstViewController.m的ViewDidLoad函数先添加几行代码,以示区别

- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view from its nib.
self.view.backgroundColor = [UIColor yellowColor];

UIToolbar *toolBar = [[UIToolbar alloc]initWithFrame:CGRectMake(0, 0, 320, 44)];

NSMutableArray *toolBarArray = [NSMutableArray array];
[toolBarArray addObject:[[UIBarButtonItem alloc]initWithBarButtonSystemItem:UIBarButtonSystemItemAction
target:self
action:nil]];

UIBarButtonItem *title=[[UIBarButtonItem alloc] initWithTitle:@"My Test"
style:UIBarButtonItemStylePlain
target:self
action:nil];
[toolBar setItems:[NSArray arrayWithObject:title]];
[toolBar setItems:toolBarArray];
[self.view addSubview:toolBar];

}


然后,当运行程序的时候,加载的就是FirstViewController的视图了

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