My picker is not actually selecting values? - objective-c

Question

So I have a picker that pops up instead of the keyboard, however it does not change values when you scroll to different points on the picker. I test this by having an alert show what age was selected, and it never changes from the first option. I would think the alert is broken, but the blue selector outline over the currently selected option in the picker is not showing up either. Here is the code for both the picker and the alert:
- (void)viewDidLoad
{
[super viewDidLoad];
NSArray *array = [[NSArray alloc] initWithObjects:#"18-29",#"30-39",#"40-49",#"50-59",#"60+",nil];
self.pickerData = array;
}
-(IBAction)UITextFieldEditingDidBegin
{
UIPickerView *picker = [[UIPickerView alloc]
initWithFrame:CGRectMake(0, 244, 320, 270)];
picker.delegate = self;
picker.dataSource = self;
[self.view addSubview:picker];
[picker release];
}
-(IBAction)donePressed
{
NSInteger row = [agePicker selectedRowInComponent:0];
NSString *selected = [pickerData objectAtIndex:row];
NSString *title = [[NSString alloc] initWithFormat:
#"You selected %#!", selected];
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:title
message : #"Thank you for choosing."
delegate:nil
cancelButtonTitle :#"Okay!"
otherButtonTitles :nil];
[alert show];
[agePicker resignFirstResponder];
}
-(NSInteger)numberOfComponentsInPickerView:(UIPickerView *)pickerView
{
return 1;
}
-(NSInteger)pickerView:(UIPickerView *)pickerView
numberOfRowsInComponent:(NSInteger)component
{
return [pickerData count];
}
-(NSString *)pickerView:(UIPickerView *)pickerView
titleForRow:(NSInteger)row
forComponent:(NSInteger)component
{
return[pickerData objectAtIndex:row];
}

Answer 1

Edit,
to help dismiss your picker,
make it an instance var, declare your picker in the interface,
MyClass.h
#interface MyClass:UIViewController <UIPickerViewDelegate, UIPickerViewDataSource>{
UIPickerView *picker
}
MyClass.m
#interface MyClass()
property (nonatomic, retain) *selectedVal; //make it a NSString
#end
-(IBAction)UITextFieldEditingDidBegin
{
picker = [[UIPickerView alloc]
initWithFrame:CGRectMake(0, 244, 320, 270)];
picker.delegate = self;
picker.dataSource = self;
[self.view addSubview:picker];
//[picker release]; //Place your picker release in the dealloc method
}
You have to implement the delegate for the picker,
- (void)pickerView:(UIPickerView *)thePickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component {
self.selectedVal = [pickerData objectAtIndex:row]
NSLog(#"Selected option: %#. ", self.selectedVal );
}
Then on your done button, you have the selected val in your property for use
-(IBAction)donePressed
{
NSString *title = [[NSString alloc] initWithFormat:
#"You selected %#!", self.selectedVal];
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:title
message : #"Thank you for choosing."
delegate:nil
cancelButtonTitle :#"Okay!"
otherButtonTitles :nil];
[alert show];
[alert release]; //I noticed you release the picker, so not using ARC, so release alert!!
[picker resignFirstResponder];
//after done, remove the picker from the view
[picker removeFromSuperview];
}