Question

我需要传递类PassengerNavi数据服务器Parse给授权用户。然后将数据写入NSString。如何从PFUser获取数据我不知道，我真的需要帮助开发人员）

我的ViewController.m文件：

    #import <CloudKit/CloudKit.h>
#import <Parse/Parse.h>
#import "PassengerNavi.h"
#import "ViewController.h"
#import "RegistrationConsole.h"

@interface ViewController ()

@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
}

- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
}

- (IBAction)authorizationController:(id)sender {
    [PFUser logInWithUsernameInBackground:self.username.text
                                 password:self.password.text block:^(PFUser *user, NSError *error)
     {
         if (!error) {

             PassengerNavi *PassengerViewController = [[PassengerNavi alloc]initWithNibName:@"PassengerNavi" bundle:nil];
             [self presentViewController:PassengerViewController animated:YES completion:nil];
         } else {
             UIAlertView *errorAlertView = [[UIAlertView alloc]initWithTitle:@"British Airways" message:@"Your have Business Class ticket. Please use First Class ticket or contact with British Airways customer center." delegate:nil cancelButtonTitle:@"Close" otherButtonTitles:nil, nil];
             [errorAlertView show];
         }
     }];
}

- (IBAction)registrationController:(id)sender {
    RegistrationConsole *RegistrationViewController = [[RegistrationConsole alloc]initWithNibName:@"RegistrationConsole" bundle:nil];
    [self presentViewController:RegistrationViewController animated:nil completion:nil];
}

@end

My PassengerNavi.m：

#import "ViewController.h"
#import <Parse/Parse.h>

@interface PassengerNavi ()

@end

@implementation PassengerNavi

- (void)viewDidLoad {
    [super viewDidLoad];

    [[[[UIApplication sharedApplication] delegate] window] rootViewController];

    PFQuery *test = [PFQuery queryWithClassName:@"_User"];
    [test whereKey:@"google" equalTo:[PFUser currentUser]];
    [test whereKey:@"objectId" equalTo:[NSNumber numberWithInt:1]];
    NSArray *arrayofObjectIds = [test findObjects];

    PFQuery *query = [PFUser query];
    [query whereKey:@"objectId" containedIn:arrayofObjectIds];
    NSArray *followingArray = [query findObjects];
    NSLog(@"%@",followingArray);

    self.clubWorldID = followingArray;

    self.view.backgroundColor = [UIColor colorWithPatternImage:[UIImage imageNamed:@"ba_fc_wallpaper.jpg"]];
}

- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
}

- (IBAction)britishDialler:(id)sender {
    BACalling *CallerViewController = [[BACalling alloc]initWithNibName:@"BACalling" bundle:nil];
    [self presentViewController:CallerViewController animated:YES completion:NULL];
}

- (IBAction)britishMessenger:(id)sender {
    BAMessenger *MessengerViewController = [[BAMessenger alloc]initWithNibName:@"BAMessenger" bundle:nil];
    [self presentViewController:MessengerViewController animated:YES completion:nil];
}

- (IBAction)personalProfileView:(id)sender {
    PersonalProfile *PersonalViewController = [[PersonalProfile alloc]initWithNibName:@"PersonalProfile" bundle:nil];
    [self presentViewController:PersonalViewController animated:YES completion:nil];
}

- (IBAction)aboutSoftwareView:(id)sender {
    AboutSoftware *AboutViewController = [[AboutSoftware alloc]initWithNibName:@"AboutSoftware" bundle:nil];
    [self presentViewController:AboutViewController animated:YES completion:nil];
}

@end

Answer 1

试试这段代码：

SecondViewController *vc = [[SecondViewController alloc] init];
vc.usernameObjectId      = // <-- however you store/produce the value in FirstViewController

之后，按/显示/无论vc。

仅供参考： 最好将NSString属性声明为：
@property (copy, nonatomic) NSString *...

在另一个ViewController中发送数据

1 个答案: