#import "AppDelegate.h"  中

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

// Override point for customization after application launch.

//判断是否登陆，由登陆状态判断启动页面 //获取UserDefault

NSUserDefaults *userDefault = [NSUserDefaults standardUserDefaults]; NSString *name = [userDefault objectForKey:@"name"];

//获取storyboard

UIStoryboard *storyboard = [UIStoryboard storyboardWithName:@"Main" bundle:[NSBundle mainBundle]];

//如果用户未登陆则把根视图控制器改变成登陆视图控制器

if (name == nil) {

NSLog(@"%@",name);

id view = [storyboard instantiateViewControllerWithIdentifier:@"LoginView"];

self.window.rootViewController = view;

}

return YES;

}

#import "ViewController.h"

#import "LapLoginViewController.h"//导入

#import "NetWorkManger.h"//导入(这是一个我自己写的第三方, 解析 url 的,可以在我博客里找一下,此处不再累赘);

@interface ViewController ()

@property (weak, nonatomic) IBOutlet UITextField *nameTextFiled;

@property (weak, nonatomic) IBOutlet UITextField *passwordTextFiled;

@property (nonatomic,strong)NSDictionary *dataSource;

@end

@implementation ViewController

- (NSDictionary *)dataSource {

if (!_dataSource) {

self.dataSource = [NSDictionary dictionary];

}

return _dataSource;

}

//storyboard 中拖出来的按钮,登陆

- (IBAction)loginAction:(id)sender {

//获取用户输入的信息

NSString *username = self.nameTextFiled.text;

NSString *password = self.passwordTextFiled.text;

NSString *str = [NSString stringWithFormat:@"http://hy.gdhstz.com/Hander/Admin_Handler.ashx?Action=Login&UserPhone=%@&FPwd=%@",username,password];

[[NetWorkManger mainNetworkManager] getDateWithURL:str success:^(NetWorkManger *net, id object) {

NSLog(@"%@",object);

} fail:^(NetWorkManger *net, NSError *error) {

}];

//对用户信息的验证

if (username.length > 10){

[[NetWorkManger mainNetworkManager] getDateWithURL:str success:^(NetWorkManger *net, id object) {

if (object == nil) {

UIAlertView *alert;

alert = [[UIAlertView alloc] initWithTitle:@"抱歉" message:@"账号密码有误,请重新输入" delegate: self  cancelButtonTitle:@"确定" otherButtonTitles: nil, nil];

[alert show];

}else {

//获取userDefault单例

NSUserDefaults *userDefaults = [NSUserDefaults standardUserDefaults];

//登陆成功后把用户名和密码存储到UserDefault

[userDefaults setObject:username forKey:@"name"];

[userDefaults setObject:password forKey:@"password"];          [userDefaults synchronize];

//用模态跳转到主界面

LapLoginViewController *lapVC = [[LapLoginViewController alloc] init];

[self.navigationController pushViewController:lapVC animated:YES];

}

} fail:^(NetWorkManger *net, NSError *error) {

UIAlertView *alert;

alert = [[UIAlertView alloc] initWithTitle:@"抱歉"

message:@"账号密码有误,请重新输入"

delegate: self

cancelButtonTitle:@"确定"

otherButtonTitles: nil, nil];

[alert show];

}];

}else{

UIAlertView *alert;

alert = [[UIAlertView alloc] initWithTitle:@"抱歉"

message:@"账号密码有误,请重新输入"

delegate: self

cancelButtonTitle:@"确定"

otherButtonTitles: nil, nil];

[alert show];

}

}

//登陆之后跳转到该界面, 该界面的button方法用来注销 登陆的;

#import "LapLoginViewController.h"

@interface LapLoginViewController ()

@end

@implementation LapLoginViewController

- (IBAction)hahahahahahahah:(id)sender {

//获取UserDefaults单例

NSUserDefaults *userDefaults = [NSUserDefaults standardUserDefaults];

//移除UserDefaults中存储的用户信息

[userDefaults removeObjectForKey:@"name"];     [userDefaults removeObjectForKey:@"password"];      [userDefaults synchronize];

//获取storyboard

UIStoryboard *storyboard = [UIStoryboard storyboardWithName:@"Main" bundle:[NSBundle mainBundle]];

//获取注销后要跳转的页面

id view = [storyboard instantiateViewControllerWithIdentifier:@"LoginView"];

//模态展示出登陆页面

[self presentViewController:view animated:YES completion:^{     }];

}