（转）[IOS]根据不同情况启动不同页面

（转）[IOS]根据不同情况启动不同页面

APP下载安装第一次使用一般会显示一个首次启动引导界面然后进入主界面，非首次开启APP也通常会显示一个启动界面然后进入主界面。

FirstUseViewController.m

LaunchViewController.m

- (void)viewDidLoad { [super viewDidLoad]; self.view.backgroundColor = [UIColor blueColor]; UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, 200, 50)]; label.center = self.view.center; [label setFont:[UIFont systemFontOfSize:30]]; label.text = @"启动页面"; [self.view addSubview:label];// 延迟2s调用，一般启动页面会停留，或者有些动画什么的，本例只简述思路，不深究细节 [self performSelector:@selector(changeView) withObject:self afterDelay:2]; // Do any additional setup after loading the view.}//切换到下一个界面- (void)changeView { UIWindow *window = self.view.window; ViewController *main = [[ViewController alloc] init]; //添加一个缩放效果 main.view.transform = CGAffineTransformMakeScale(0.2, 0.2); [UIView animateWithDuration:0.1 animations:^{ main.view.transform = CGAffineTransformIdentity; }]; window.rootViewController

ViewController.m

- (void)viewDidLoad { [super viewDidLoad]; self.view.backgroundColor = [UIColor grayColor]; UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, 100, 50)]; label.center = self.view.center; [label setFont:[UIFont systemFontOfSize:30]]; label.text = @"主界面"; [self.view addSubview:label];}

AppDelegate.m设置，两种方法。个人觉得第二种利用NSUserDefaults实现更方便

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions { self.window = [[UIWindow alloc] initWithFrame:[UIScreen mainScreen].bounds]; self.window.backgroundColor = [UIColor whiteColor]; [self.window makeKeyAndVisible]; 利用文件操作判断是否为第一次使用此APP// NSString *filePath = [NSHomeDirectory() stringByAppendingPathComponent:@"Documents/firstUse.plist"]; //第一次启动，没有此文件，会自动创建// NSDictionary *dic = [NSDictionary dictionaryWithContentsOfFile:filePath];// // BOOL notFirstUse = YES;// notFirstUse = [dic[@"notFirstUse"] boolValue];// if (!notFirstUse) {// NSDictionary *dic = @{@"notFirstUse" : @YES };// [dic writeToFile:filePath atomically:YES];// FirstUseViewController *vc = [[FirstUseViewController alloc] init];// self.window.rootViewController = vc;// }else {// LaunchViewController *vc = [[LaunchViewController alloc] init];// self.window.rootViewController = vc;// }//// 利用NSUserDefaults实现 if(![[NSUserDefaults standardUserDefaults] boolForKey:@"firstLaunch"]) { [[NSUserDefaults standardUserDefaults] setBool:YES forKey:@"firstLaunch"]; NSLog(@"首次启动"); FirstUseViewController *vc = [[FirstUseViewController alloc] init]; self.window.rootViewController = vc; }else { NSLog(@"非首次启动"); LaunchViewController *vc = [[LaunchViewController alloc] init]; self.window.rootViewController = vc; } return YES;}

版权声明：本文内容由网络用户投稿，版权归原作者所有，本站不拥有其著作权，亦不承担相应法律责任。如果您发现本站中有涉嫌抄袭或描述失实的内容，请联系我们jiasou666@gmail.com 处理，核实后本网站将在24小时内删除侵权内容。