Xcode iOS：将int转换为NSString

Question

I'm trying to grab avalue from a UIPicker which is populated with round numbers, integers pulled from and NSMutableArray. I'm trying to convert the pulled values to an actual int.

I tried this in the .m:

int pickednumber;


......

-(void) pickerView:(UIPickerView *)pickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component{


NSString *numbers = [arrayNumbers objectAtIndex:[pickerView selectedRowInComponent:0]];

pickednumber = [NSString stringWithFormat:@"%d", numbers];

NSLog(@"Picked number %@ ", numbers); 

}

I get the error in the pickednumber = line: Incompatible pointer to integer conversion assigning to 'int' from 'id'. What am i doing wrong?

Message was edited by Sounddesigner on 3/8/12 at 3:05 PM

Answer 1

NSString has a convinience method to get integer value of a text

do this

pickednumber = [numbers intValue];

NSLog(@"Picked number %d ", numbers);  // not %@ ..%@ is for objects .. not int

Answer 2

To convert integer to NSString:

NSString *string  = [NSString stringWithFormat:@"%i",integerNumber];

To convert NSString to int:

int number = [string integerValue];

Answer 3

NSString *intString = [NSString stringWithFormat:@"%d", myInt];

http://forums.macrumors.com/showthread.php?t=448594