Do not allow to open UIPickerview in Objective C

Question

Let me know if value is not available in UiPickerView, then do not allow to open UiPickerView?

How to handle this situation in objective C.

Thanks you, Shriram.

Answer 1

Check if

[self.values count]>0

then write

yourPickerView.delegate=self;
yourPickerView.datasource=self;

If you don't call delegate and datasource then this method won't be called

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