picker view shows numbers in pickerview but not showing properly on label? - objective-c

Question

i have added a pickerview from interface builder.i am using this method to show data like this....
- (void)pickerView:(UIPickerView *)pickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component
{
if (pickerView == SpotPickerView) // don't show selection for the custom picker
{
// report the selection to the UI label
label.text = [NSString stringWithFormat:#"%d - %# - %d",[pickerView selectedRowInComponent:0],
[RowArray objectAtIndex:[pickerView selectedRowInComponent:1]],
[pickerView selectedRowInComponent:2]];
}
}
- (NSString *)pickerView:(UIPickerView *)pickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component
{
NSString *returnStr = #"";
if (pickerView == SpotPickerView)
{
if (component == 0)
{
returnStr = [[NSNumber numberWithInt:row+1] stringValue];
}
else if(component==1)
{
returnStr = [RowArray objectAtIndex:row];
}
else
{
returnStr =[[NSNumber numberWithInt:row+1] stringValue];
}
}
return returnStr;
}
- (CGFloat)pickerView:(UIPickerView *)pickerView widthForComponent:(NSInteger)component
{
CGFloat componentWidth = 0.0;
if (component == 0)
componentWidth = 90.0;
else if (component == 1)
componentWidth = 100.0;
else
componentWidth = 90.0;
return componentWidth;
}
- (CGFloat)pickerView:(UIPickerView *)pickerView rowHeightForComponent:(NSInteger)component
{
return 40.0;
}
- (NSInteger)pickerView:(UIPickerView *)pickerView numberOfRowsInComponent:(NSInteger)component
{
int count;
if (component == 0)
count = 15;
else if (component == 1)
count=[RowArray count];
else
count = 100;
return count;
}
- (NSInteger)numberOfComponentsInPickerView:(UIPickerView *)pickerView
{
return 3;
}
here is the RowArray
- (void)viewDidLoad {
RowArray = [[NSArray arrayWithObjects:
#"A", #"B", #"C",
#"D", #"E", #"F", #"G",#"H",#"I",#"J",#"K",#"L",#"M",#"N",#"O",#"P",#"Q",#"R",#"S",#"T",
#"U",#"V",#"W",#"X",#"Y",#"Z",
nil] retain];
}
but selecting the first row shows this.
i need to store the values in database so i need the 1 instead of zero.
also how do i reset my picker view.means when i click on a button it automatically comes to the 0th index in each column.

Answer 1

label.text = [NSString stringWithFormat:#"%d - %# - %d",[pickerView selectedRowInComponent:0],
[RowArray objectAtIndex:[pickerView selectedRowInComponent:1]],
[pickerView selectedRowInComponent:2]];
This code is retrieving the row number from the selected row in a component. Arrays are zero indexed and the pickerview (probably) uses array's to manage the rows. So, the first row will be 0, the second 1, the third 2 and so on. This is easily solved by doing:
[pickerView selectedRowInComponent:0] + 1
You can select certain rows programmatically by using selectRow:inComponent:animated If you want the select the 0th index in each column just do: [pickerView selectRow:0 inComponent:0 animated:YES] for every component.