iOS-王云鹤 APP首次启动显示用户指导

这个功能的重点就是在如何判断应用是第一次启动的. 其实很简单

我们只需要在一个类里面写好用户引导页面  基本上都是使用UIScrollView 来实现,

新建一个继承于UIViewController的类 命名为 UserGuideViewController ,

在UserGuideViewController.m 写

- (void)viewDidLoad

{

[superviewDidLoad];

// Do any additional setup after loading the view.

self.view.backgroundColor = [UIColorredColor];

[selfinitGuide];//加载新用户指导页面

}

-(void)initGuide{

, , , )];

)];

[scrollView setPagingEnabled:YES];  //视图整页显示

, , , )];

[imageview setImage:[UIImage imageNamed:@"0.png"]];

[scrollView addSubview:imageview];

[imageview release];

, , , )];

[imageview1 setImage:[UIImage imageNamed:@"1.png"]];

[scrollView addSubview:imageview1];

[imageview1 release];

, , , )];

[imageview2 setImage:[UIImage imageNamed:@"2.png"]];

[scrollView addSubview:imageview2];

[imageview2 release];

, , , )];

[imageview3 setImage:[UIImage imageNamed:@"3.png"]];

imageview3.userInteractionEnabled = YES;    //打开imageview3的用户交互;否则下面的button无法响应

[scrollView addSubview:imageview3];

[imageview3 release];

UIButton *button = [UIButtonbuttonWithType:UIButtonTypeRoundedRect];//在imageview3上加载一个透明的button

[button setTitle:@"立即体验" forState:UIControlStateNormal];

[button , , , )];

[button addTarget:selfaction:@selector(firstpressed) forControlEvents:UIControlEventTouchUpInside];

[imageview3 addSubview:button];

[self.view addSubview:scrollView];

[scrollView release];

button.backgroundColor =[UIColorredColor];

}

//Button的方法  ViewController为 指导完之后 点击进入的主视图

- (void)firstpressed{

[selfpresentModalViewController:[[[ViewControlleralloc] init] autorelease] animated:YES];  //点击button跳转到根视图s

}

----------------------------------------------------------

AppDelegate.m 中的代码

#import "AppDelegate.h"

#import "ViewController.h"

@implementation AppDelegate

- (void)dealloc

{

[_window release];

//[_viewController release];

[super dealloc];

}

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions

{

self.window = [[[UIWindowalloc] initWithFrame:[[UIScreenmainScreen] bounds]] autorelease];

//判断是不是第一次启动

if (![[NSUserDefaultsstandardUserDefaults]boolForKey:@"firstLaunch"]) {

[[NSUserDefaultsstandardUserDefaults ]setBool:YESforKey:@"firstLaunch"];

NSLog(@"第一次启动");

//如果是第一次启动 使用UserGuideViewController

UserGuideViewController *userGUideViewController =[[UserGuideViewControlleralloc]init];

self.window.rootViewController =userGUideViewController;

[userGUideViewController release];

}

else{

NSLog(@"不是第一次启动");

//如果不是第一次启动使用应用的的主视图

ViewController *Vc = [[ViewControlleralloc] init];

self.window.rootViewController = Vc;

[Vc release];

}

self.window.backgroundColor = [UIColorwhiteColor];

[self.windowmakeKeyAndVisible];

return YES;

}