iPhone UIPickerView not loading values - ios

Question

I attempted to build a basic application prototype (mimic real application flow). I created one view controller class and linked the UIPickerView to the .h file. Wrote the logic but still nothing is reflecting in the picker.
Am I missing something? Here you go with the code:
#implementation SelectCountryForViewAdsViewController
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
// Custom initialization
}
return self;
}
-(NSInteger)numberOfComponentsInPickerView:(UIPickerView *)pickerView
{
return 1; // For one column
}
-(NSInteger)pickerView:(UIPickerView *)pickerView numberOfRowsInComponent:(NSInteger)component
{
return [self.colorArray count];
}
-(NSString *)pickerView:(UIPickerView *)pickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component
{
return [self.colorArray objectAtIndex:row]; // If it's a string
}
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view.
self.colorArray = [[NSArray alloc] initWithObjects:#"Blue",#"Green",#"Orange",#"Purple",#"Red",#"Yellow" , nil];
}
and in the .h file:
#interface SelectCountryForViewAdsViewController : UIViewController <UIPickerViewDataSource,UIPickerViewDelegate>
#property (strong, nonatomic) IBOutlet UIPickerView *countrySelector;
#property (strong, nonatomic) NSArray *colorArray;
#end
Any help is appreciated. I am a beginner in iOS devs.

Answer 1

Please check below image you need to right click on UIPicker view and connect it File owner.
Please check below link for more detail
http://www.techotopia.com/index.php/An_iOS_5_iPhone_UIPickerView_Example
http://iosmadesimple.blogspot.in/2012/09/uipickerview-tutorial.html (More helpful)
http://www.developersalmanac.com/uipickerview-tutorial/

Answer 2

[countrySelector setDelegate:self];
[countrySelector setDataSource:self];
//Use this code in Viewdidload method

Answer 3

Add UIPickerViewDataSource and UIPickerViewDelegate in your interface file.
In viewDidLoad:
self.countrySelector.delegate = self;
self.countrySelector.dataSource = self;
You can set the delegate and dataSource directly from the xib file. But don't forget to mention them in the interface file.

Answer 4

-(UIView *)pickerView:(UIPickerView *)pickerView viewForRow:(NSInteger)row forComponent:(NSInteger)component reusingView:(UIView *)view{
UILabel *lblRow = [[UILabel alloc] initWithFrame:CGRectMake(0.0f, 0.0f, [pickerView bounds].size.width, 44.0f)];
[lblRow setTextAlignment:NSTextAlignmentCenter];
[lblRow setTextColor: [UIColor strawberryColor]];
[lblRow setText:self.colorArray[row]];
[lblRow setFont:[UIFont fontWithName:#"Avenir-Medium" size:18]];
[lblRow setBackgroundColor:[UIColor clearColor]];
return lblRow;
}