Making UIPicker pop up when textfield is tapped - iphone

Question

I made a application with the templet of a Single View Application. Then I added a label and connected it to the .h file of my ViewController. Then I made a picker, filled it, then set it (and a toolBar I made) to the textfield. But when I tap the textfield, the picker is just all black. If this made no sense, the code will explain it all.
.h
#import <UIKit/UIKit.h>
#interface ViewController : UIViewController {
}
#property (weak, nonatomic) IBOutlet UITextField *habitField;
#property (weak, nonatomic) NSArray *PickerData;
#end
.m
#import "ViewController.h"
#interface ViewController ()
#end
#implementation ViewController
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
NSArray *array = [[NSArray alloc] initWithObjects:#"1",#"2",#"3", nil];
self.PickerData = array;
UIToolbar *toolBar = [[UIToolbar alloc] init];
toolBar.barStyle = UIBarStyleBlackOpaque;
[toolBar sizeToFit];
[toolBar setBackgroundImage:[UIImage imageNamed:#"red_navigation_bar.png"] forToolbarPosition:UIToolbarPositionAny barMetrics:UIBarMetricsDefault];
UIBarButtonItem *flexSpace = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace
target:self
action:nil];
UIBarButtonItem *doneButton = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemDone
target:self
action:#selector(releasePicker)];
UIPickerView *Picker = [[UIPickerView alloc] init];
doneButton.image = [UIImage imageNamed:#"button.png"];
[toolBar setItems:#[flexSpace, doneButton] animated:YES];
self.habitField.inputAccessoryView = toolBar;
[self.habitField setInputView:Picker];
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
-(NSInteger)numberOfComponentsInPickerView:(UIPickerView *)pickerView {
return 1;
}
-(NSInteger)pickerView:(UIPickerView *)pickerView numberOfRowsInComponent:(NSInteger)component {
return [self.PickerData count];
}
-(NSString *)pickerView:(UIPickerView *)pickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component {
return [self.PickerData objectAtIndex:row];
}
#end
The simulator looks like this

Answer 1

As i see you forgot to set delegate for picker ( UIPickerViewDelegate )
Picker.delegate = self;
Remember to add :)
#interface ViewController : UIViewController<UIPickerViewDelegate> {
}
Cheers