Question

我已经阅读了这里的问题，但无法找出我的错误。

我知道KeyChain更好，但仅仅出于我的目的，我想将它存储在NSUserDefaults中。

当我尝试保存密码并重新输入密码时，它无法正常工作并继续使用ELSE。我在这里错过了哪一行？

#import "PasswordViewController.h"
#import "ViewController.h"




@interface PasswordViewController ()

@end

@implementation PasswordViewController



\

-(void) viewDidAppear: (BOOL) animated {
    [super viewDidAppear: animated];




       if(![[NSUserDefaults standardUserDefaults] boolForKey:@"AlreadyRan"] )
       {

           UIAlertController * alert=   [UIAlertController
                                         alertControllerWithTitle:@"Password"
                                         message:@"Set Your Password"
                                         preferredStyle:UIAlertControllerStyleAlert];

           UIAlertAction* ok = [UIAlertAction actionWithTitle:@"OK" style:UIAlertActionStyleDefault
                                                      handler:^(UIAlertAction * action) {
                                                          //Do Some action here

                                                      }];
           UIAlertAction* cancel = [UIAlertAction actionWithTitle:@"Cancel" style:UIAlertActionStyleDefault
                                                          handler:^(UIAlertAction * action) {
                                                              [alert dismissViewControllerAnimated:YES completion:nil];
                                                          }];

           [alert addAction:ok];
           [alert addAction:cancel];


           [alert addTextFieldWithConfigurationHandler:^(UITextField *textField) {
               textField.placeholder = @"Password";
               textField.secureTextEntry = YES;

          [[NSUserDefaults standardUserDefaults] setObject:textField.text forKey:@"Password"];

                [[NSUserDefaults standardUserDefaults] synchronize];



           }];

           [self presentViewController:alert animated:YES completion:nil];

           [[NSUserDefaults standardUserDefaults] setBool:TRUE forKey:@"AlreadyRan"];

       }
}

- (IBAction)enterPassword {
    NSString * _password = [[NSUserDefaults standardUserDefaults] objectForKey:@"Password"];
   NSLog(@"passField = %@ | _password = %@", passwordField.text, _password);
    if ([passwordField.text isEqual:_password]) {
        //Password is Correct
        NSString * storyboardName = @"Main";
        UIStoryboard *storyboard = [UIStoryboard storyboardWithName:storyboardName bundle: nil];
        UIViewController * vc = [storyboard instantiateViewControllerWithIdentifier:@"PhotoView"];
        [self presentViewController:vc animated:YES completion:nil];

    }


    else {
        //Password is wrong
        [self dismissViewControllerAnimated:YES completion: nil];

}
}

-(void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(nonnull NSDictionary *)info {

    image = [info objectForKey:@"UIImagePickerControllerOriginalImage"];
    [ImageView setImage:image];
    [self dismissViewControllerAnimated:YES completion:NULL];
    [self dismissViewControllerAnimated:YES completion:NULL];



}
-(void)imagePickerControllerDidCancel:(UIImagePickerController *)picker{
    [self dismissViewControllerAnimated:YES completion:NULL];

}

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view.
}

- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

/*
#pragma mark - Navigation

// In a storyboard-based application, you will often want to do a little preparation before navigation
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
    // Get the new view controller using [segue destinationViewController].
    // Pass the selected object to the new view controller.
}
*/

- (IBAction)enterPassword:(id)sender {
}
@end

Answer 1

NSUserDefault个键区分大小写

使用@"Password"

保存

[[NSUserDefaults standardUserDefaults] setValue:textField.text forKey:@"Password"];

然后使用@"password"

进行检索

NSString * _password = [[NSUserDefaults standardUserDefaults] stringForKey:@"password"];

除了该问题，您还没有使用_password变量，因此请使用它：

if ([passwordField.text isEqualToString:_password) {...}

是的，你是对的，钥匙串是保存密码而不是NSUserDefault

的合适位置

编辑：

保存：

[[NSUserDefaults standardUserDefaults] setObject:textField.text forKey:@"Password"];

retireve：

NSString * _password = [[NSUserDefaults standardUserDefaults] objectForKey:@"Password"];

TESTED＆amp;工作

您必须将密码保存在ok完成处理程序
中
-(void) viewDidAppear: (BOOL) animated { [super viewDidAppear: animated]; if(![[NSUserDefaults standardUserDefaults] boolForKey:@"AlreadyRan3"] ) { UIAlertController * alert= [UIAlertController alertControllerWithTitle:@"Password" message:@"Set Your Password" preferredStyle:UIAlertControllerStyleAlert]; UIAlertAction* ok = [UIAlertAction actionWithTitle:@"OK" style:UIAlertActionStyleDefault handler:^(UIAlertAction * action) { NSString *password = alert.textFields[0].text; [[NSUserDefaults standardUserDefaults] setObject:password forKey:@"Password"]; [[NSUserDefaults standardUserDefaults] synchronize]; NSLog(@"NSUserDefaults %@", [[NSUserDefaults standardUserDefaults] dictionaryRepresentation]); }]; UIAlertAction* cancel = [UIAlertAction actionWithTitle:@"Cancel" style:UIAlertActionStyleDefault handler:^(UIAlertAction * action) { [alert dismissViewControllerAnimated:YES completion:nil]; }]; [alert addAction:ok]; [alert addAction:cancel]; [alert addTextFieldWithConfigurationHandler:^(UITextField *textField) { textField.placeholder = @"Password"; textField.secureTextEntry = YES; }]; [self presentViewController:alert animated:YES completion:nil]; [[NSUserDefaults standardUserDefaults] setBool:TRUE forKey:@"AlreadyRan"]; } }

密码不保存

1 个答案: