UIPicker view and UITable view

I am facing on common error in both UIPickerview and UI开发者_开发技巧Tableview, i.e.

Terminating app due to uncaught exception 'NSUnknownKeyException', reason: '[<UIViewController 0x4d32080> setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key CurrencyPicker.'

and

Terminating app due to uncaught exception 'NSUnknownKeyException', reason: '[<UIViewController 0x4b2c070> setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key tableView.'

Please help me why these are.

I think it is due to datasource and delegate connection of tableview and picker view to fileowner. but I have done every thing right.

Plz help me out.

Thanks.

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I think this post could help you

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@Aman: Here is code:

@ Aman:in setting.h

@interface Setting : UIViewController <UIPickerViewDelegate, UIPickerViewDataSource>{
    UIButton *button;

    NSMutableArray *CurrencyArray;
    IBOutlet UIPickerView *CurrencyPicker;
}

in setting.m

- (void)viewDidLoad {
    [super viewDidLoad];

    CurrencyArray = [[NSMutableArray alloc] init];
    [CurrencyArray addObject:@" Rs "];
    [CurrencyArray addObject:@" R$ "];
    [CurrencyArray addObject:@" $ "];
    [CurrencyArray addObject:@" ƒ "];
    [CurrencyArray addObject:@" ман "];

    button=(UIButton *)[self.view viewWithTag:1];

    [CurrencyPicker selectRow:1 inComponent:0 animated:NO];
    [button setTitle:[CurrencyArray objectAtIndex:[CurrencyPicker selectedRowInComponent:0]] forState:UIControlStateNormal];
}
- (NSInteger)numberOfComponentsInPickerView:(UIPickerView *)pickerView;
{
    return 1;
}

- (void)pickerView:(UIPickerView *)pickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component
{
    [button setTitle:[CurrencyArray objectAtIndex:row] forState:UIControlStateNormal];
}

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

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