How can i have multiple data arrays for uipickerviews?

Question

What I am trying to accomplish: I have 5 different UITextfields. I want the user to be able to fill in these fields using UIPickerviews. Also i want each of the pickerviews to have a different ranges and/or types of values to choose from for each text field.

I've tried doing this using multiple pickerviews with different arrays for each textfield using switch statements. However I don't feel that this is the most efficient way to go about implementing this. Could someone shed some light on the best practises in implementing different data arrays for pickerviews?

Answer 1

You can achieve what you are doing with help of just one PickerView with the following code

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

-(NSInteger)pickerView:(UIPickerView *)pickerView numberOfRowsInComponent:(NSInteger)component
{
    switch (pickerSelected) {

        case LANGUAGE:
            return [languageArray count];
            break;
        case GENDER:
            return [genderArray count];
            break;
        case COUNTRY:
            return [countryArray count];
            break;
        case CITY:
            return [cityArray count];
            break;

        default:
            return 0;
            break;
    }

    return 0;
}
-(NSString *)pickerView:(UIPickerView *)pickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component
{
    switch (pickerSelected) {

        case LANGUAGE:
            return [languageArray objectAtIndex:row];
            break;
        case GENDER:
            return [genderArray objectAtIndex:row];
            break;

        case COUNTRY:
            return [[countryArray objectAtIndex:row] countryName];
            break;

        case CITY:
            return [cityArray objectAtIndex:row];

        default:
            return @"";
            break;
    }

    return nil;
}

• Where languageArray , genderArray, countryArray represent your different arrays

• and pickerSelected can be an enum or an int value which you can set according to different UITextField's. Each UITextField will have unique value for PickerView