Segment Control in iPhone

Introduction

In this article I will create a Single view application. Here I use a label, and Segment control from outlet. Here when we click on the first button of the segment it changes the background color and prints a massage on the label like as when we click on the second button of the segment control it changes the background color and prints a message on the label same as it works for the third button of the segment.

To understand it we use the following.

Step 1

Open XCode by double-clicking on it. 

Step 2

Create a New XCode Project by clicking on it.

Step 3

Now Select Single View Application and click on Next. 

Step 4

Now provide your Product Name.

Step 5

Select the location where you want to save your project and click on Create. 

Step 6

Now we write the code.

ViewController.h

//
// segmentViewController.h
// segment control
//
// Created by Sachin Bhardwaj on 15/12/12.
// Copyright (c) 2012 Sachin Bhardwaj. All rights reserved.
//

#import <UIKit/UIKit.h>

@interface segmentViewController : UIViewController {
UILabel *segmentLabel;
UISegmentedControl *segmentedControl;

}

@property (nonatomic,retain) IBOutlet UILabel *segmentLabel;
@property (nonatomic,retain) IBOutlet UISegmentedControl *segmentedControl;

-(IBAction) segmentedControlIndexChanged;


@end

ViewController.m

//
//  segmentViewController.m
//  segment control
//
//  Created by Sachin Bhardwaj on 15/12/12.
//  Copyright (c) 2012 Sachin Bhardwaj. All rights reserved.
//

#import "segmentViewController.h"

@interface segmentViewController ()

@end

@implementation segmentViewController
@synthesize segmentLabel;
@synthesize segmentedControl;

- (void)viewDidLoad {
    self.segmentLabel.text =@"green background";
     
    [super viewDidLoad];
}
- (void)dealloc {
      [segmentLabel release];
      [segmentedControl release];
    [super dealloc];
}

-(IBAction) segmentedControlIndexChanged{
    switch (self.segmentedControl.selectedSegmentIndex) {
        case 0:
            self.segmentLabel.text =@"green background";
            self.view.backgroundColor = [UIColor greenColor];
            break;
            case 1:
            self.segmentLabel.text =@"blue background";
              self.view.backgroundColor = [UIColor blueColor];
            break;
         case 2:
            self.segmentLabel.text =@"red background";
            self.view.backgroundColor = [UIColor redColor];
            break;
 
        default:
            break;
    }
     
}
@end

Step 7

Now check the outlet connection:

 

Step 8

Finally we click on the Run button to show the output.

Output 1 in iPhone:

 

Output 2 in iPhone:

Output 3 in iPhone: