iOS登錄segue修復

Question

這是我的登錄成功參數，它位於viewDidload中的右括號下

//check whether it's a login or register
NSString* command = (sender.tag==1)?@"register":@"login";
NSMutableDictionary* params =[NSMutableDictionary dictionaryWithObjectsAndKeys:command, @"command", fldUsername.text, @"username", hashedPassword, @"password", nil];
//make the call to the web API
[[API sharedInstance] commandWithParams:params onCompletion:^(NSDictionary *json) {
    //result returned
    NSDictionary* res = [[json objectForKey:@"result"] objectAtIndex:0];
    if ([json objectForKey:@"error"]==nil && [[res objectForKey:@"IdUser"] intValue]>0) {
        [[API sharedInstance] setUser: res];
        [self.presentingViewController dismissViewControllerAnimated:YES completion:nil];
        //show message to the user
        [[[UIAlertView alloc] initWithTitle:@"Logged in" message:[NSString stringWithFormat:@"Welcome %@",[res objectForKey:@"username"]] delegate:nil cancelButtonTitle:@"Close" otherButtonTitles: nil] show];
    } else {
        //error
        [UIAlertView error:[json objectForKey:@"error"]];
    }
}];

}

這是我要在授權用戶時顯示的視圖中的程序化連接

-(void)viewDidload
[super viewDidLoad];
{
if (![[API sharedInstance] isAuthorized]) {
    [self performSegueWithIdentifier:@"ShowLogin" sender:nil];
}

問題是，當我在數據庫中輸入保存的登錄憑據（即用戶名：user1密碼：password）時，我得到了我應該收到的正確UIAlert（登錄-歡迎use​​r1）。 但是當我輸入（用戶名：user1密碼：假密碼）時，我仍然得到登錄的UIAlert。 另外，如果我嘗試從該應用程序注冊一個新用戶，即（username：user2 password：password 2），我將收到身份驗證失敗的UIAlert。 另外，當我輸入有效的憑據時，我的查詢實際上並沒有發生。 有小費嗎？

更新：注銷代表

-(void)logout {
//logout the user from the server, and also upon success destroy the local authorization
[[API sharedInstance] commandWithParams:[NSMutableDictionary dictionaryWithObjectsAndKeys:@"logout", @"command", nil] onCompletion:^(NSDictionary *json) {
   //logged out from server
   [API sharedInstance].user = nil;
   [self performSegueWithIdentifier:@"ShowLogin" sender:nil];
}];
}

Answer 1

[[API sharedInstance] commandWithParams:params onCompletion:^(NSDictionary *json) {
    //result returned
    NSDictionary* res = [[json objectForKey:@"result"] objectAtIndex:0];
    if ([json objectForKey:@"error"]==nil && [[res objectForKey:@"IdUser"] intValue]>0) {
        [[API sharedInstance] setUser: res];
        [API sharedInstance].isAuthorized = YES; //Added
        [self.presentingViewController dismissViewControllerAnimated:YES completion:nil];
        //show message to the user
        [[[UIAlertView alloc] initWithTitle:@"Logged in" message:[NSString stringWithFormat:@"Welcome %@",[res objectForKey:@"username"]] delegate:nil cancelButtonTitle:@"Close" otherButtonTitles: nil] show];
    } else {
        [[API sharedInstance] setUser: nil]; //Added
        [API sharedInstance].isAuthorized = NO; //Added
        //error
        [UIAlertView error:[json objectForKey:@"error"]];
    }
}];

找到帶有內聯注釋//Added的行，然后在代碼中嘗試。 還如前所述，更新登錄視圖-> viewWillAppear和注銷方法。

希望這可以幫助。