CODEWITHSUNDEEP
iphoneobjective-ccocoa-touchiosnsstring
Mat
Mat

Reputation: 6324

NSString - 2 digit number

`Hi, i have a string with a 2 digit numbers (like 32) but i want to get and use it as 2 single digit number (like 3 and 2). how can I do it? thanks in advance. 

  NSString *depositOverTotalRwy = [NSString stringWithFormat:@"%@", [deposit text]];
NSArray *components = [depositOverTotalRwy
                       componentsSeparatedByString:@"/"];
NSString *firstThird = [components objectAtIndex:0];
unichar firstChar = [firstThird characterAtIndex: 0];
NSString *firstCharStr = [NSString stringWithFormat:@"%c", firstChar];

unichar secChar = [firstThird characterAtIndex: 1];
NSString *secCharStr = [NSString stringWithFormat:@"%c",secChar];






NSLog(@"%@ over %@", firstCharStr, secCharStr);

if ([firstCharStr  isEqualToString: @"1"]) {
    firstCharStr=@"wet";
    NSLog(@"wet");
}
if ([firstCharStr  isEqualToString: @"2"]) {
    firstCharStr=@"snow";

    NSLog(@"snow");
}
if ([firstCharStr  isEqualToString: @"3"]) {
    firstCharStr=@"ice";
    NSLog(@"ice");
    }

if ([secCharStr  isEqualToString: @"1"]) {
    secCharStr=@"wet";
    NSLog(@"wet");
}
if ([secCharStr  isEqualToString: @"2"]) {
    secCharStr=@"snow";

    NSLog(@"snow");
}
if ([secCharStr  isEqualToString: @"3"]) {
    secCharStr=@"ice";
    NSLog(@"ice");
}

NSString *secThird = [components objectAtIndex:1];
if ([secThird isEqualToString: @"1"]) {
    secThird = @"wet";
    NSLog(@"wet");
}
if ([secThird isEqualToString:@"2"]) {
    secThird = @"snow";

    NSLog(@"snow");
}
if ([secThird isEqualToString:@"3"]) {
    secThird = @"ice";

    NSLog(@"ice");
}

NSString *thirdThird = [components objectAtIndex:2];

if ([thirdThird isEqualToString: @"1"]) {
    thirdThird = @"wet";
    NSLog(@"wet");
}
if ([thirdThird isEqualToString:@"2"]) {
    thirdThird = @"snow";

    NSLog(@"snow");
}
if ([thirdThird isEqualToString:@"3"]) {
    thirdThird = @"ice";

    NSLog(@"ice");
}

dep.text = [NSString stringWithFormat:@"1/3 %@%@ 2/3 %@ 3/3 %@", firstCharStr,secCharStr, secThird, thirdThird];

it works now with to digits (ie 32) but if i try to put just one digit I get an error.... any idea? thanks

Upvotes: 1

Views: 794

Answers (4)

Evan Mulawski
Evan Mulawski

Reputation: 55334

NSString *firstThird = [components objectAtIndex:0];//--- I get 32 from this string but i want 3 and 2
NSArray *numbersAsStrings = [firstThird componentsSeparatedByString:@""];
NSMutableArray *digits = [NSMutableArray array];
for (NSString *digit in numbersAsStrings)
{
    [digits addObject:[NSNumber numberWithInt:[digit intValue]]];
}

This sample can take any number and convert it into an array of NSNumbers.

Access:

int int1 = [[digits objectAtIndex:0]intValue]; //returns 3

Upvotes: 0

more tension
more tension

Reputation: 3352

NSString's -characterAtIndex: should do the trick:

NSString            *firstThird = @"32";
unichar             c1, c2;

c1 = [ firstThird characterAtIndex: 0 ];
c2 = [ firstThird characterAtIndex: 1 ];

switch ( c1 ) {
case '3':
    ...
}

Upvotes: 2

Steven Kramer
Steven Kramer

Reputation: 8513

Skipping any unicode complexities, how about extracting the characters

unichar firstChar = [firstThird characterAtIndex: 0];

Upvotes: 0

avizzini
avizzini

Reputation: 789

Loop through and extract one character at a time from your string.

for(int i = 0; i < [myString length]; i++)
{
      char extractedChar = [myString characterAtIndex:i];

      if(extractedChar == '1')....
}

Upvotes: 1

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