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POHow to initialize value of another view controller
 

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  1. POHow to initialize value of another view controller
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    <p>In my app when user redirect to app from browser I am presenting registration page. In that I want to insert value from url variable. So first I am fetching value from url and then displaying that page with textbox value.But it is not setting textbox value.</p> <p>my code:</p> <pre><code> - (BOOL)application:(UIApplication *)application openURL:(NSURL *)url sourceApplication:(NSString *)sourceApplication annotation:(id)annotation { NSString *urlString=[NSString stringWithContentsOfURL:url encoding:nil error:nil]; NSRange r = [urlString rangeOfString:@"gratzeez://" options:NSCaseInsensitiveSearch]; if(r.location != NSNotFound){ NSLog(@"founddddd"); NSLog(@"gratzeez url %@",url); //NSString *str=[url valueForKey:@"email"]; NSArray *query = [[url query] componentsSeparatedByString:@"&amp;"]; NSMutableDictionary *parameters = [NSMutableDictionary dictionaryWithCapacity:[query count]]; for(NSString *parameter in query) { NSArray *kv = [parameter componentsSeparatedByString:@"="]; [parameters setObject:[kv count] &gt; 1 ? [[kv objectAtIndex:1] stringByReplacingPercentEscapesUsingEncoding:NSISOLatin1StringEncoding] : [NSNull null] forKey:[[kv objectAtIndex:0] stringByReplacingPercentEscapesUsingEncoding:NSISOLatin1StringEncoding]]; } NSLog(@"Parameters: %@", parameters); [self.tabBar dismissViewControllerAnimated:NO completion:nil]; RegistrationViewController *RegistrationVC=[[RegistrationViewController alloc] initWithNibName:@"RegistrationViewController" bundle:nil]; RegistrationVC.txtEmail.userInteractionEnabled=NO; NSLog(@"q = %@", [parameters objectForKey:@"email"]); UINavigationController *navController=[[UINavigationController alloc]initWithRootViewController:RegistrationVC]; RegistrationVC.txtEmail.text=[parameters objectForKey:@"email"]; NSLog(@"value%@",RegistrationVC.txtEmail.text); //here getting null value [self.tabBar presentViewController:navController animated:NO completion:nil]; navController.navigationItem.leftBarButtonItem=nil; return YES; } </code></pre> <p>what is I present registrationviewcontroller by this way.?</p> <pre><code>RegistrationViewController *RegistrationVC=[[RegistrationViewController alloc] init ]; NSLog(@"q = %@", [parameters objectForKey:@"email"]); UINavigationController *navController=[[UINavigationController alloc]initWithRootViewController:RegistrationVC]; NSLog(@"txtemail %@ value%@",RegistrationVC.txtEmail,RegistrationVC.txtEmail.text); [self.tabBar presentViewController:navController animated:NO completion:^{ RegistrationVC.txtEmail.userInteractionEnabled=NO; RegistrationVC.txtEmail.text=[parameters objectForKey:@"email"]; }]; </code></pre> <p>Now again this is giving null for both.</p>
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    1. USvivek
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    1. COReplace `NSLog(@"value%@",RegistrationVC.txtEmail.text);` with `NSLog(@"textEmail : %@ \nvalue%@",RegistrationVC.txtEmail,RegistrationVC.txtEmail.text);` to check if your textEmail exists at this moment.
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    2. COI see you use initWithNibName:bundle, in this case your txtEmail must be placed inside you Nib file, and attached with IBOutlet. I hope your [parameters objectForKey:@"email"] != nil
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    3. CO@zbMax txtEmail is not present at that time.Now what to do?
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A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

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Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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