Simple UIPickerView Example

Simple UIPickerView Example 

Step 1

      Create a Project in Xcode

Step 2
   

       Drag and drop  the "Picker View" in to " .xib " 

Step 3

 Click the ".h " file
 change the code like this

//  ViewController.h

//  UiPickerViewExample

//

//  Created by Apple on 4/22/13.

//  Copyright (c) 2013 Dhanushka Adrian. All rights reserved.

//

#import <UIKit/UIKit.h>

@interface ViewController : UIViewController<UIPickerViewDataSource, UIPickerViewDelegate>

{

    NSArray *itemsArray;

   

    IBOutlet UIPickerView *myFirstPickerView;

       

}

@property (nonatomic, strong) IBOutlet UIPickerView *myFirstPickerView;

@property (nonatomic, strong) NSArray *itemsArray;

@end

Step 4
right click the file owner

Step 5


Click the ".m " file
change the code like this

//

//  ViewController.m

//  UiPickerViewExample

//

//  Created by Apple on 4/22/13.

//  Copyright (c) 2013 Dhanushka Adrian. All rights reserved.

//

#import "ViewController.h"

@interface ViewController ()

@end

@implementation ViewController

@synthesize myFirstPickerView,itemsArray;

- (void)viewDidLoad

{

    [super viewDidLoad];

    // Do any additional setup after loading the view, typically from a nib.

   

    myFirstPickerView.delegate = self;

    myFirstPickerView.dataSource = self;

   

    itemsArray = [[NSArray alloc] initWithObjects:@"1st Year", @"2nd Year", @"3rd Year", @"4th Year", nil];

}

Step 6

add following methods to  " .m " file

- (NSInteger)numberOfComponentsInPickerView:(UIPickerView *)pickerView

{

    return 1;  // returns the number of 'columns' to display.

}

- (NSInteger)pickerView:(UIPickerView *)pickerView numberOfRowsInComponent:(NSInteger)component

{

    return [itemsArray count];  // returns the number of rows in each component..

}

- (CGFloat)pickerView:(UIPickerView *)pickerView rowHeightForComponent:(NSInteger)component

{

    return 30.0;

}

- (NSString *)pickerView:(UIPickerView *)pickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component

{

    return [itemsArray objectAtIndex:row];

}

//If the user chooses from the pickerview, it calls this function;

- (void)pickerView:(UIPickerView *)pickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component

{

    //Let's print in the console what the user had chosen;

    NSLog(@"Your Selected item: %@", [itemsArray objectAtIndex:row]);

}

Step 7

Run the app

Good Luck!

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