XCode: How to fill UIPickerView in code directly with content? - iphone

Question

How do I do that? i want to fill it with values like EURO, USD, POUND and so on and paste the value into a textfield when i tap on the corresponding row.
- (BOOL)textFieldShouldBeginEditing:(UITextField *)textField {
// Make a new view, or do what you want here
UIPickerView *picker = [[UIPickerView alloc]
initWithFrame:CGRectMake(0, 244, 320, 270)];
[self.view addSubview:picker];
return NO;
}

Answer 1

-(void)pickerView:(UIPickerView *)pickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component
{
myTextField.text= [PickerArray objectAtIndex:row];
}

Answer 2

You should implement in your delegate method -(NSString*) pickerView:(UIPickerView*)pickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component that will return titles #"EURO", #"USD", #"POUND", #"RUB" for your rows.
For example,
-(NSString*) pickerView:(UIPickerView*)pickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component
{
switch(component)
{
case 0:
return #"EURO";
case 1:
return #"USD";
case 2:
return #"POUND";
case 3:
return #"RUB";
}
return #"";
}

Answer 3

write code in your delegate method
-(NSString*) pickerView:(UIPickerView*)pickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component
{
return string;
}
In Array add like this #"one", #"two", #"three", #"four"

Answer 4

As others have already written you have to add the above mentiond delegate method to fill up your PickerView with items from an array. For writing the value into a textfield, you can do this in 2 ways. You can either do write a pickerView didSelectRow: delegate method like this:
- (void)pickerView:(UIPickerView *)pickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component
{
myTextField.text= [myArray objectAtIndex:row];
}
This will update the textField each time you tap on a row. The other way is that you pull the value of the pickerView on a button press or on some other action. Similar to
- (void)someAction:(id)sender
{
NSInteger row = [myPicker selectedRowInComponent:0];
myTextField.text = [myArray objectAtIndex:row];
}