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POMultiview app. cannot change text field values
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  1. POMultiview app. cannot change text field values
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    copied!<p>hey guys i'm making an app that has 2 views. the first view is where the user inputs the numbers and when they hit calculate button.. its takes them to a new view where the answer is displayed on a textfield. the calculation is handled by a different file. "calc.h " and "calc.m" </p> <p>this is the main view files (the view where the user enters the numbers ) </p> <pre><code>#import &lt;UIKit/UIKit.h&gt; @interface test2ViewController : UIViewController { IBOutlet UITextField *num1; //input number 1 IBOutlet UITextField *num2; // input number2 } @property (nonatomic,retain) UITextField *num1; @property(nonatomic, retain)UITextField *num2; -(IBAction)calculate:(id)sender; //the calculate button -(IBAction)exit:(id)sender; @end </code></pre> <p>the answer is displayed in a different view that shows up when the user hits the calculate button. below is the code for that !</p> <pre><code>#import "test2ViewController.h" #import "answer.h" #import "calculate.h" @implementation test2ViewController @synthesize num1,num2; -(IBAction)calculate:(id)sender{ calculate *testclass = [[calculate alloc]init]; answer *view = [[answer alloc]initWithNibName:nil bundle:nil]; [self presentModalViewController:view animated:YES]; int i = [[num1 text] intValue]; testclass.number1 = i; int j = [[num2 text] intValue]; testclass.number2 = j; [testclass calc]; } </code></pre> <p>".h" file of the view that displays the answer</p> <pre><code>#import &lt;UIKit/UIKit.h&gt; @interface answer : UIViewController { IBOutlet UITextField *text;//textfield to display answer } @property(nonatomic,retain) UITextField *text; -(IBAction)back:(id)sender; @end </code></pre> <p>".m" file </p> <pre><code>#import "answer.h" #import "test2ViewController.h" #import "calculate.h" @implementation answer @synthesize text; -(IBAction)back:(id)sender{ test2ViewController *view = [[test2ViewController alloc]initWithNibName:nil bundle:nil]; [self presentModalViewController:view animated:YES]; } </code></pre> <p>the next is an objective c class file that does the calculation. it has one function that does the calculation and here is the ".h" and ".m" file ".h"</p> <pre><code>#import &lt;Foundation/Foundation.h&gt; @interface calculate : NSObject { int number1; int number2; NSString *ans; } @property int number1; @property int number2; @property (nonatomic , retain) NSString *ans; -(void)calc; @end </code></pre> <p>".m"</p> <pre><code>#import "calculate.h" #import "answer.h" #import "test2ViewController.h" @implementation calculate @synthesize number1,number2,ans; -(void)calc{ int i = number1 + number2; answer *ans1 = [[answer alloc]init]; ans = [NSString stringWithFormat:@"%d",i]; ans1.text.text = ans; } @end </code></pre> <p>so as you can see the above function calculates the answer..puts it into a string and sets that to the textfield. but the textfield doesn't show anything..so the problem here is that i cannot access the textfield even though i created an object from it....</p>
 

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