Wie kann ich das Programm mehr als eine UIPickerView in der gleichen Ansicht?

Ich bin mit Textfeldern inputView Eigenschaft, um anzuzeigen, UIPickerViews anstelle der Tastatur. Die Art, wie ich es programmiert ist, kann ich nicht erklären, die PickerViews in der .H-Datei, oder schließen Sie Sie in der view im interface builder. Wenn ich das implementieren der Eigenschaften der pickerviews, ich bin nicht in der Lage, jede von Ihnen mit verschiedenen Eigenschaften. Ich habe versucht mit "wenn" - Aussagen, mitteilen, um unterschiedliche Eigenschaften haben, je nachdem, welche picker verwendet wurde, wie folgt....

-(NSInteger)numberOfComponentsInPickerView:(UIPickerView *)agePickerView {
    if ([pickerView isEqual: agePickerView]){
                 return 1;
    }
            if ([pickerView isEqual: weightPickerView]){
                 return 1;
    }

}

Wenn ich dies tun, obwohl, Er wird sagen, dass weightPickerView ist schwarzarbeit. So, hier ist mein code für die Implementierung der pickerViews.

@implementation MainViewController

//WEIGHT FIELD CODE 

-(IBAction)weightFieldDidBeginEditing{
UIPickerView *weightPickerView = [[UIPickerView alloc] init];
weightField.inputView = weightPickerView;
weightPickerView.showsSelectionIndicator = YES;
weightPickerView.delegate = self;
weightPickerView.dataSource = self;
[weightPickerView release];

UIToolbar *weightToolBar = [[UIToolbar alloc] initWithFrame:CGRectMake(0,0,320,44)];
UIBarButtonItem *doneButton = [[UIBarButtonItem alloc]   initWithBarButtonSystemItem:UIBarButtonSystemItemDone target:self action:@selector(pickerDoneClicked:)];
[weightToolBar setItems:[NSArray arrayWithObject:doneButton] animated:NO];
 weightField.inputAccessoryView = weightToolBar;
}

-(NSInteger)weightpickerView:(UIPickerView *)weightPickerView numberOfRowsInComponent: (NSInteger)component{
return [weightPickerArray count];
}

-(NSString *)weightpickerView:(UIPickerView*)weightPickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component {
return [weightPickerArray objectAtIndex:row];
}

//AGE FIELD CODE

-(IBAction)ageFieldDidBeginEditing{
UIPickerView *agePickerView = [[UIPickerView alloc] init];
ageField.inputView = agePickerView;
agePickerView.showsSelectionIndicator = YES;
agePickerView.delegate = self;
agePickerView.dataSource = self;
[agePickerView release];

UIToolbar *ageToolbar = [[UIToolbar alloc] initWithFrame:CGRectMake(0,0,320,44)];
UIBarButtonItem *doneButton = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemDone target:self action:@selector(pickerDoneClicked:)];
[ageToolbar setItems:[NSArray arrayWithObject:doneButton] animated:NO];
ageField.inputAccessoryView = ageToolbar; 
}

-(NSInteger)numberOfComponentsInPickerView:(UIPickerView *)agePickerView {
    return 1;
}

-(NSInteger)pickerView:(UIPickerView *)agePickerView numberOfRowsInComponent: (NSInteger)component {
return [agePickerArray count];
}

-(NSString *)pickerView:(UIPickerView*)agePickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component {
    return [agePickerArray objectAtIndex:row];

}

-(void)pickerView:(UIPickerView *)agePickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component{
    ageField.text = (NSString *) [agePickerArray objectAtIndex:row];
}

-(void)pickerDoneClicked:(id)sender{
[ageField resignFirstResponder];
[weightField resignFirstResponder];
}



//Implement viewDidLoad to do additional setup after loading the view, typically from a    nib.
- (void)viewDidLoad {
[super viewDidLoad];

agePickerArray = [[NSMutableArray alloc] init];
for (int age=1; age<=100; age++) {
    NSString *ageString = [NSString stringWithFormat:@"%d%",age];
                           [agePickerArray    addObject:ageString];


weightPickerArray = [[NSMutableArray alloc] init];
for (int weight = 50; weight<=500; weight++) {
    NSString *weightString = [NSString stringWithFormat:@"%d%",weight];
                            [weightPickerArray   addObject:weightString];
    }
}

Gibt es irgendeine andere Möglichkeit, das zu tun, was ich versuche zu tun , weil es so nicht funktioniert... Und wenn ich nur versuchen, und wiederholen Sie die Durchführung für die einzelnen picker-Ansicht bekomme ich den Fehler "redefinition of...""numberOfRowsInComponent"" oder die je andere Eigenschaft, die ich mache. Bitte um Hilfe, auch wenn ich es zu ändern und zu erklären, die pickerViews in der .H-Datei irgendwie, ich interessiere mich nicht, was ich zu tun habe, solange kann ich diese zu arbeiten!!

DANK

UPDATE!!!

   @interface MainViewController : UIViewController   <FlipsideViewControllerDelegate,UITextFieldDelegate,UIPickerViewDelegate,UIPickerViewDataSource> {

IBOutlet UITextField*ageField;

NSMutableArray *agePickerArray;
IBOutlet UITextField*weightField;
NSMutableArray *weightPickerArray;
UIPickerView *weightPickerView;
UIPickerView *agePickerView;    

   }

- (IBAction)ageFieldDidBeginEditing;
- (IBAction)weightFieldDidBeginEditing;
- (IBAction)showInfo:(id)sender;
- (IBAction)activityButtonClicked;
@end

.m-Datei

-(IBAction)weightFieldDidBeginEditing{
//UIPickerView *weightPickerView = [[UIPickerView alloc] init];
weightField.inputView = weightPickerView;
weightPickerView.showsSelectionIndicator = YES;
weightPickerView.delegate = self;
weightPickerView.dataSource = self;
[weightPickerView release];

UIToolbar *weightToolBar = [[UIToolbar alloc] initWithFrame:CGRectMake(0,0,320,44)];
UIBarButtonItem *doneButton = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemDone target:self action:@selector(pickerDoneClicked:)];
[weightToolBar setItems:[NSArray arrayWithObject:doneButton] animated:NO];
 weightField.inputAccessoryView = weightToolBar;
}

-(NSInteger)weightpickerView:(UIPickerView *)weightPickerView numberOfRowsInComponent:(NSInteger)component{
return [weightPickerArray count];
}

-(NSString *)weightpickerView:(UIPickerView*)weightPickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component {
return [weightPickerArray objectAtIndex:row];
}

//ALTER CODE

-(IBAction)ageFieldDidBeginEditing{
//UIPickerView *agePickerView = [[UIPickerView alloc] init];
ageField.inputView = agePickerView;
agePickerView.showsSelectionIndicator = YES;
agePickerView.delegate = self;
agePickerView.dataSource = self;
[agePickerView release];

UIToolbar *ageToolbar = [[UIToolbar alloc] initWithFrame:CGRectMake(0,0,320,44)];
UIBarButtonItem *doneButton = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemDone target:self action:@selector(pickerDoneClicked:)];
[ageToolbar setItems:[NSArray arrayWithObject:doneButton] animated:NO];
ageField.inputAccessoryView = ageToolbar; 
}

-(NSInteger)numberOfComponentsInPickerView:(UIPickerView *)agePickerView {
    return 1;
}

-(NSInteger)pickerView:(UIPickerView *)pickerView numberOfRowsInComponent:(NSInteger)component {
if ([pickerView isEqual: agePickerView]) {
    return [agePickerArray count];
}
if ([pickerView isEqual:weightPickerView]) {
    return [weightPickerArray count];
}
}

-(NSString *)pickerView:(UIPickerView*)agePickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component {
    return [agePickerArray objectAtIndex:row];

}

-(void)pickerView:(UIPickerView *)agePickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component{
    ageField.text = (NSString *) [agePickerArray objectAtIndex:row];
}

-(void)pickerDoneClicked:(id)sender{
[ageField resignFirstResponder];
[weightField resignFirstResponder];
}



//Implement viewDidLoad to do additional setup after loading the view, typically from a   nib.
- (void)viewDidLoad {
[super viewDidLoad];

agePickerArray = [[NSMutableArray alloc] init];
for (int age=1; age<=100; age++) {
    NSString *ageString = [NSString stringWithFormat:@"%d%",age];
                           [agePickerArray   addObject:ageString];


weightPickerArray = [[NSMutableArray alloc] init];
for (int weight = 50; weight<=500; weight++) {
    NSString *weightString = [NSString stringWithFormat:@"%d%",weight];
                            [weightPickerArray addObject:weightString];
    }
}