ios-第一次启动APP的引导页、登录页、首页

APPdelegate

//
//  AppDelegate.m

#import "AppDelegate.h"
#import "RootViewController.h"  //根控制器
#import "WelcomeViewController.h" //引导页
#import "LoginViewController.h"//登录页

@interface AppDelegate ()
{
    RootViewController *rootVC;
}
@property (nonatomic,strong) WelcomeViewController *welcomeVC;
@property (nonatomic,strong) LoginViewController *loginVC;


@end

@implementation AppDelegate


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

    self.window = [[UIWindow alloc]initWithFrame:[UIScreen mainScreen].bounds];
    self.window.backgroundColor = WhiteColor;
    
    [self createRooVC];
    [self chooseRootVC];
    [self.window makeKeyAndVisible];

    return YES;
}


-(WelcomeViewController *)welcomeVC
{
    if (!_welcomeVC) {
        _welcomeVC = [[WelcomeViewController alloc]init];
        __weak typeof(self) weakSelf = self;
       
        //引导页的回调

        _welcomeVC.callBack = ^(){
            [weakSelf chooseRootVC];
        };
    }
    return _welcomeVC;
}

-(void)createRooVC
{
    rootVC = [RootViewController defaultsTabBar];;
}


//选择 rootViewController

-(void)chooseRootVC
{
    
    
    BOOL flag = [[NSUserDefaults standardUserDefaults]boolForKey:@"firstIn"];
    if (flag == YES) {
        self.window.rootViewController = rootVC;
    } else {
        self.window.rootViewController = self.loginVC;
    }
}

-(LoginViewController *)loginVC{
    
    
    if (!_loginVC) {
        _loginVC = [[LoginViewController alloc]init];
        __weak typeof(self) weakSelf = self;
        
        //登录页的回调
        _loginVC.callBack = ^(){
            [weakSelf chooseRootVC];
        };
    }
    return _loginVC;
}


@end
View Code

RootViewController.h

#import <UIKit/UIKit.h>

@interface RootViewController : UITabBarController
+(id)defaultsTabBar;
+ (void)deallocTabbar;

-(void)setTabBarHidden:(BOOL)Bool;//判断是否隐藏 底部标签栏

@end
View Code

RootViewController.m

//
//  RootViewController.m

#import "RootViewController.h"
#import "HomeViewVC.h"
#import "NewViewVC.h"
#import "UserViewVC.h"
#import "LoginViewController.h"
#define threeWidth  Main_Width/3

static RootViewController *rootVC;
@interface RootViewController ()

@property (nonatomic) BOOL tabBarIsShow;
@property (nonatomic,strong) NSMutableArray *buttonArray;
@property (nonatomic,strong) UIImageView *backImageView;
@property (nonatomic,strong) NSMutableArray * labelArray;

@end

@implementation RootViewController

+ (void)deallocTabbar
{
    rootVC = nil;
}

+(id)defaultsTabBar
{
    if (rootVC == nil) {
        rootVC = [[RootViewController alloc]init];
    }
    
    return  rootVC;
}

- (void)viewDidLoad {
    [super viewDidLoad];

    self.buttonArray = [NSMutableArray array];
    self.labelArray = [NSMutableArray array];

//自己的tabBar
    self.tabBarIsShow = YES;
 //系统的tabBar
    self.tabBar.hidden = YES;

    self.view.backgroundColor = WhiteColor;
    HomeViewVC *homeVC = [[HomeViewVC alloc]init];
    DefineNavigation *homeNC = [[DefineNavigation alloc]initWithRootViewController:homeVC];

    NewViewVC *NewVC = [[NewViewVC alloc]init];
    DefineNavigation *NewNC = [[DefineNavigation alloc]initWithRootViewController:NewVC];
    
    UserViewVC *UserVC = [[UserViewVC alloc]init];
    DefineNavigation *UserNC = [[DefineNavigation alloc]initWithRootViewController:UserVC];
    
    self.viewControllers = @[homeNC,NewNC,UserNC];
    
    [self setCustomTabbarItem];
}
-(void)setCustomTabbarItem
{
    self.backImageView = [[UIImageView alloc]initWithFrame:CGRectMake(0, Main_height - 48*kHeight, Main_Width, 48*kHeight)];
    UIImageView * imageline = [[UIImageView alloc]initWithFrame:CGRectMake(0, 0, Main_Width, 0.5*kHeight)];
    imageline.backgroundColor = Home_back_Color;
    [self.backImageView addSubview:imageline];
    
    self.backImageView.backgroundColor = [UIColor whiteColor];
//    self.backImageView.image = [UIImage imageNamed:@"wireframe_bottom"];
    
    self.backImageView.userInteractionEnabled = YES;
    [self.view addSubview:self.backImageView];
    
    NSArray *titleArray = @[@"首页",
                            @"消息",
                            @"个人中心"];
    CGFloat space = Main_Width / 3.0;
    for (int i = 0; i < titleArray.count; i++) {
        UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];
        NSString * imageNormal = [NSString stringWithFormat:@"home_bottom_%d0",i+1];
        NSString * imageSelected =[NSString stringWithFormat:@"home_bottom_%d1",i+1];
        [button setImage:[UIImage imageNamed:imageNormal] forState:UIControlStateNormal];
        [button setImage:[UIImage imageNamed:imageSelected] forState:UIControlStateSelected];
        button.tag = 1001+i+100;
        UIButton * buttonBig = [UIButton buttonWithType:UIButtonTypeCustom];
        buttonBig.tag = 1001+i;
        
        [buttonBig addTarget:self action:@selector(pressButton:) forControlEvents:UIControlEventTouchUpInside];

        [self.backImageView addSubview:button];
        [button mas_makeConstraints:^(MASConstraintMaker *make) {
            make.top.equalTo(self.backImageView.mas_top).with.offset(8*kHeight);
            make.left.mas_equalTo(self.backImageView.mas_left).with.offset(40*kWidth+i*space);
            make.size.mas_equalTo(CGSizeMake(24*kWidth, 24*kHeight));
        }];
        [self.backImageView addSubview:buttonBig];
        [buttonBig mas_makeConstraints:^(MASConstraintMaker *make) {
            make.top.equalTo(self.backImageView.mas_top).with.offset(8*kHeight);
            make.left.mas_equalTo(self.backImageView.mas_left).with.offset(threeWidth*i);
            make.size.mas_equalTo(CGSizeMake(threeWidth, 46*kHeight));
        }];
        

        UILabel * label = [self createUIlabel:titleArray[i] andFont:FontOfSize13 andColor:BlackColor];
        label.text = titleArray[i];
        if (i == 0) {
            button.selected = YES;
            [button setTitleColor:BlackColor forState:UIControlStateNormal];
            label.textColor = GreedTitleColor;
        }
        [self.backImageView addSubview:label];

        [label mas_makeConstraints:^(MASConstraintMaker *make) {
            make.top.equalTo(button.mas_bottom).with.offset(1*kHeight);
            make.centerX.mas_equalTo(button.mas_centerX);
        }];
        [self.labelArray addObject:label];
        [self.buttonArray addObject:button];
    }
}

-(void)selectButtonWithIndex:(NSInteger)index
{
    UIButton *btn = (UIButton *)self.buttonArray[index];
    [self pressButton:btn];
}

-(void)setTabBarHidden:(BOOL)Bool
{
    if (Bool) {
        [self hideTabBar];
    } else {
        [self showTabBar];
    }
}


//隐藏 tabBar（y坐标变大）
-(void)hideTabBar
{
    if (!self.tabBarIsShow) {
        return;
    }
        
        [UIView animateWithDuration:0.35 animations:^{
            self.backImageView.frame = CGRectMake(0, Main_height, Main_Width, 48*kHeight);
        }];
    
    self.tabBarIsShow = NO;
}

//显示 tabBar（y坐标变小）
-(void)showTabBar
{
    if (self.tabBarIsShow) {
        return;
    }
    [UIView animateWithDuration:0.35 animations:^{
        self.backImageView.frame = CGRectMake(0, Main_height - 48*kHeight, Main_Width, 48*kHeight);
 
    }];
    
    self.tabBarIsShow = YES;
}


-(void)pressButton:(UIButton *)sender
{
    
    if (sender.tag - 1001 >= 4) {
        return;
    }
    
    //一定要有这个
    self.selectedIndex = sender.tag - 1001;

    for (UILabel * label in self.labelArray) {
        label.textColor = littleBlackColor;
    }
    UILabel * label = self.labelArray[self.selectedIndex];
    label.textColor = GreedTitleColor;
    
    NSInteger smallBtn = sender.tag + 100;
    for (UIButton *tempBtn in self.buttonArray) {
        if (tempBtn.tag == smallBtn) {
            tempBtn.selected = YES;
            
            [tempBtn setTitleColor:BlackColor forState:UIControlStateNormal];

        } else {
            tempBtn.selected = NO;
            [tempBtn setTitleColor:GrayColor forState:UIControlStateNormal];

        }
    }
}

//判断是否跳转到 登录界面
-(void)viewDidAppear:(BOOL)animated
{
    [super viewDidAppear:animated];
    
    NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
    NSString *string = [defaults objectForKey:@"login"];
    if (string == nil) {
        
        LoginViewController *loginVC = [[LoginViewController alloc]init];
        
        dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(0.2 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
            
            [self presentViewController:loginVC animated:YES completion:nil];
            
        });
        
    }
}


-(UILabel*)createUIlabel:(NSString *)title andFont:(CGFloat)font andColor:(UIColor*)color {
    UILabel * label =[[UILabel alloc]init];
    label.text = title;
    label.textColor = color;
    UIFont *fnt = [UIFont fontWithName:@"HelveticaNeue" size:font];CGSize size = [label.text sizeWithAttributes:[NSDictionary dictionaryWithObjectsAndKeys:fnt,NSFontAttributeName, nil]];
    CGFloat nameH = size.height;
    CGFloat nameW = size.width;
    label.textAlignment = NSTextAlignmentCenter;
    label.frame =CGRectMake(0, 0, nameW, nameH);
    label.font = Font(font);
    return label;
}
@end
View Code

WelcomeViewController.h

#import <UIKit/UIKit.h>

@interface WelcomeViewController : UIViewController
//回调用
@property (nonatomic,strong) void (^callBack)(void);

@end
View Code

WelcomeViewController.m

//
//  WelcomeViewController.m

#import "WelcomeViewController.h"
#import "LoginViewController.h"
@interface WelcomeViewController ()
@property (nonatomic,strong) UIScrollView *scrollView;
@end

@implementation WelcomeViewController

- (void)viewDidLoad {
    [super viewDidLoad];

    self.scrollView = [[UIScrollView alloc]initWithFrame:[UIScreen mainScreen].bounds];
    
    for (int i =0; i<4; i++) {
        UIImageView * imageView = [[UIImageView alloc]initWithFrame:CGRectMake(Main_Width * i, 0, Main_Width, Main_height)];
        NSString * nameStr = [[NSString alloc]initWithFormat:@"qidong%d.png",i+1];
        imageView.image = [UIImage imageNamed:nameStr];

//最后一张图片 添加 点击按钮
        if (i==3) {
            UIButton * btn = [UIButton buttonWithType:UIButtonTypeCustom];
            [btn setTitle:@"" forState:UIControlStateNormal];
            [btn setImage:[UIImage imageNamed:@"unpress"] forState:UIControlStateNormal];
            btn.tag = 100;
            [btn addTarget:self action:@selector(pressBtn) forControlEvents:UIControlEventTouchUpInside];
            [btn setImage:[UIImage imageNamed:@"press"] forState:UIControlStateHighlighted];

            imageView.userInteractionEnabled = YES;
            [imageView addSubview:btn];
            [btn mas_makeConstraints:^(MASConstraintMaker *make) {
                make.centerX.equalTo(imageView.mas_centerX);
             make.bottom.equalTo(imageView.mas_bottom).with.offset(-77*kHeight);
                make.size.mas_equalTo(CGSizeMake(160*kWidth, 38*kHeight));
            }];
        }
        [self.scrollView addSubview:imageView];
    }
    
    self.scrollView.contentOffset = CGPointMake(0, 0);
    self.scrollView.contentSize = CGSizeMake(Main_Width * 4, Main_height);

    self.scrollView.bounces = NO;
    self.scrollView.pagingEnabled = YES;
    self.scrollView.showsHorizontalScrollIndicator = NO;
    self.scrollView.showsVerticalScrollIndicator = NO;
    [self.view addSubview:self.scrollView];
}

-(void)pressBtn
{
    //保存为已经进入app
    [[NSUserDefaults standardUserDefaults]setBool:YES forKey:@"firstIn"];
    [[NSUserDefaults standardUserDefaults]synchronize];//及时保存 不等到按home键就保存内容
    
    //延迟执行
    dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(0.5 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
      
        if (self.callBack) {
            self.callBack();
        };
    });  
}


@end
View Code

LoginViewController.h

#import <UIKit/UIKit.h>
@interface LoginViewController : UIViewController
@property (nonatomic,strong) void (^callBack)(void);
@end
View Code

LoginViewController.m

//
//  LoginViewController.m


#import "LoginViewController.h"
#import "ForgetpasswordController.h"
@interface LoginViewController ()<UITextFieldDelegate>

{
    UIView * nav;
}

@property (nonatomic,strong) UITextField *phoneTextField;
@property (nonatomic,strong) UITextField *captchaTextField;
@property (nonatomic,strong) UIButton *captchaButton;
@property (nonatomic,strong) UIScrollView *scrollView;
@property (nonatomic,strong) WKProgressHUD *hud;
@property (nonatomic,copy) NSString *uuidString;


@end

@implementation LoginViewController

- (void)viewDidLoad {
    [super viewDidLoad];

    nav = [self createNavView];
    [self createNavTitle:@"登录"];
    [self.view addSubview:nav];

    [self.view addSubview:self.scrollView];

    [self initSubviews];

}

- (UIScrollView *)scrollView {
    if (!_scrollView) {
        _scrollView = [[UIScrollView alloc] initWithFrame:CGRectMake(0, 0, Main_Width, Main_height)];
        _scrollView.contentSize = CGSizeMake(Main_Width, Main_height);
        _scrollView.backgroundColor = WhiteColor;
        
        _scrollView.scrollEnabled = NO;
    }
    return _scrollView;
}


-(void)initSubviews{
    
    
    UIImageView * backImage = [[UIImageView alloc]initWithImage:[UIImage imageNamed:@"login"]];
    backImage.frame =CGRectMake(0, -20, Main_Width, Main_height);
    [self.scrollView addSubview:backImage];
    
    ///顶部Logo
    UIImageView *logoImageV = [[UIImageView alloc]initWithFrame:CGRectMake((Main_Width - 108)/2.0, 55 * kHeight, 108, 40)];
    logoImageV.image = [UIImage imageNamed:@"register_logo"];
    //输入框
    
    self.phoneTextField = [UITextField createField:@"请输入手机号" andFont:FontOfSize12 andTextColor:WhiteColor andNSColor:UITextColor];
    self.phoneTextField.delegate = self;

    
    self.captchaTextField = [UITextField createField:@"请输入6-14位密码" andFont:FontOfSize12 andTextColor:WhiteColor andNSColor:UITextColor];
    self.captchaTextField.delegate = self;
    self.captchaTextField.secureTextEntry = YES;
    
    
    //手机号
    UIView *firstV = [Common backViewWithFloat:(200 *kHeight) andField:self.phoneTextField andTitle:@"账号"];
    [self.scrollView addSubview:firstV];
    [firstV mas_makeConstraints:^(MASConstraintMaker *make) {
        make.centerX.mas_equalTo(self.scrollView.mas_centerX);
        make.size.mas_equalTo(CGSizeMake(273*kWidth, cellHeight));
        make.top.mas_equalTo(self.scrollView.mas_top).with.offset(216 *kHeight);
    }];
    

    //密码
    UIView *secondV = [Common
                       backViewWithFloat:CGRectGetMaxY(firstV.frame)+20.0*kHeight
                       andField:self.captchaTextField
                       andTitle:@"密码"];
    [self.scrollView addSubview:secondV];
    [secondV mas_makeConstraints:^(MASConstraintMaker *make) {
        make.centerX.mas_equalTo(self.scrollView.mas_centerX);
        make.size.mas_equalTo(CGSizeMake(273*kWidth, cellHeight));
        make.top.mas_equalTo(firstV.mas_bottom).with.offset(20 *kHeight);
    }];
    
    ///登录
    UIButton *loginButton = [UIButton createUIButton:@"登录" andFont:FontOfSize16 andBackGroundColor:GreedWhiteColor andTitleColor:WhiteColor andControllerVC:self andAction:@selector(LoginButtonAction)];
    loginButton.frame = CGRectMake( 18,CGRectGetMaxY(secondV.frame) + 52 * kHeight, Main_Width - 36, Button_Height);
    LRViewBorderRadius(loginButton, cellHeight/2, 0.5*kWidth, WhiteColor);
    [self.scrollView addSubview:loginButton];
    [loginButton mas_makeConstraints:^(MASConstraintMaker *make) {
        make.centerX.mas_equalTo(self.scrollView.mas_centerX);
        make.size.mas_equalTo(CGSizeMake(273*kWidth, cellHeight));
        make.top.mas_equalTo(secondV.mas_bottom).with.offset(52 *kHeight);
    }];
    ///忘记密码
    UIButton *forgetButton = [UIButton createUIButton:@"忘记密码？" andFont:FontOfSize14 andBackGroundColor:nil andTitleColor:GreedBlackColor andControllerVC:self andAction:@selector(forgetButton)];
    forgetButton.frame = CGRectMake(0, CGRectGetMaxY(loginButton.frame) + 15, 110, 20);

    [self.scrollView addSubview:forgetButton];
    [forgetButton mas_makeConstraints:^(MASConstraintMaker *make) {
        make.centerX.equalTo(self.scrollView.mas_centerX);
        make.top.mas_equalTo(loginButton.mas_bottom).with.offset(26*kHeight);
        make.size.mas_equalTo(CGSizeMake(110*kWidth, 20*kHeight));
    }];
    
    /*
     ///注册
     UIButton *registerButton = [UIButton buttonWithType:UIButtonTypeCustom];
     registerButton.frame = CGRectMake(screenWidth - 20 - 40,  CGRectGetMaxY(loginButton.frame) + 15, 40, 20);
     [registerButton setTitleColor:YellowColor forState:UIControlStateNormal];
     [registerButton setTitle:@"注册" forState:UIControlStateNormal];
     registerButton.titleLabel.font = Font(13);
     [registerButton addTarget:self
     action:@selector(registerButtonAction)
     forControlEvents:UIControlEventTouchUpInside];
     [self.scrollView addSubview:registerButton];
     */
    
    UILabel * bottomTitle = [UILabel createUIlabel:@"北京©版权所有" andFont:FontOfSize13 andColor:GreedBlackColor];
    [self.scrollView addSubview:bottomTitle];
    [bottomTitle mas_makeConstraints:^(MASConstraintMaker *make) {
        make.centerX.equalTo(self.scrollView.mas_centerX);
        make.top.mas_equalTo(forgetButton.mas_bottom).with.offset(65*kHeight);
    }];
    
    
}
#pragma mark 登录方法
-(void)LoginButtonAction{
    
    
    //保存为已经进入app
    [[NSUserDefaults standardUserDefaults]setBool:YES forKey:@"firstIn"];
    [[NSUserDefaults standardUserDefaults]synchronize];//及时保存 不等到按home键就保存内容
    [[NSUserDefaults standardUserDefaults] setObject:@"login" forKey:@"login"];

    //获取uuid
    [self sendUUID];

    
    NSDictionary *dic = @{@"loginName" : self.phoneTextField.text,
                          @"pwd": self.captchaTextField.text};
    
    NSArray *arr = [dic allValues];
    
    if ([arr containsObject:@""])
    {
        
        
        [WKProgressHUD popMessage:@"请将信息补充完整"
                           inView:self.view
                         duration:1.5
                         animated:YES];
        
        return;
    }
    
    __weak typeof(self) weakSelf = self;
    
    [WKProgressHUD showInView:self.view withText:@"" animated:YES];
    
    
    
    if (self.callBack) {
        _callBack();
    }else{
        [self.navigationController dismissViewControllerAnimated:YES completion:nil];
    };
    
}

#pragma mark 忘记密码 - 推出忘记密码Vc
- (void)forgetButton{
    
    ForgetpasswordController *forgetVC = [[ForgetpasswordController alloc]init];
    
    [self.navigationController pushViewController:forgetVC animated:YES];
}


#pragma mark - 获取UUID
- (void)sendUUID{
    
    CFUUIDRef uuid = CFUUIDCreate(NULL);
    assert(uuid != NULL);
    CFStringRef uuidStr = CFUUIDCreateString(NULL, uuid);
    if (![SSKeychain passwordForService:@"com.sandwish.eduOnline" account:@"user"])
    {
        //查看本地是否存储指定 serviceName 和 account 的密码
        [SSKeychain setPassword: [NSString stringWithFormat:@"%@", uuidStr]
                     forService:@"com.sandwish.eduOnline"account:@"user"];
        
        //从钥匙串读取UUID：
        NSString *retrieveuuid = [SSKeychain passwordForService:@"com.sandwish.eduOnline"account:@"user" ];
        
        //NSLog(@"SSKeychain存储显示 :第一次安装过:%@", retrieveuuid);
        self.uuidString = [NSString stringWithFormat:@"%@",retrieveuuid];
    }
    else
    {
        //曾经安装过 则直接能打印出密码信息(即使删除了程序 再次安装也会打印密码信息) 区别于 NSUSerDefault
        
        //从钥匙串读取UUID：
        NSString *retrieveuuid = [SSKeychain passwordForService:@"com.sandwish.eduOnline" account:@"user"];
        NSLog(@"SSKeychain存储显示 :已安装过:%@", retrieveuuid);
        
        self.uuidString = [NSString stringWithFormat:@"%@",retrieveuuid];
        
    }
}

#pragma mark - UITextField协议
- (BOOL)textFieldShouldReturn:(UITextField *)textField {
    [textField resignFirstResponder];
    return YES;
}
- (void)textFieldDidBeginEditing:(UITextField *)textField {
    if (textField == self.captchaTextField) {
        
        [UIView animateWithDuration:0.3 animations:^{
            /* 计算偏移量 */
            
            CGFloat height = 216;
            
            UIButton *button = (UIButton *)[self.view viewWithTag:400];
            
            CGFloat offsetHeight = CGRectGetMaxY(button.frame) - (Main_height - height - 64);
            
            if (offsetHeight > 0)
            {
                self.scrollView.contentInset = UIEdgeInsetsMake(-offsetHeight , 0, 0, 0);
            }
            
        } completion:nil];
    }
}


- (void)textFieldDidEndEditing:(UITextField *)textField{
    [UIView animateWithDuration:0.2 animations:^{
        self.scrollView.contentInset = UIEdgeInsetsMake(0, 0, 0, 0);
    }];
}

@end
View Code
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原文地址：https://www.cnblogs.com/sayimba/p/8329059.html