CODEWITHSUNDEEP
iosios6nsstringstring-formatting
JBeesky
JBeesky

Reputation: 319

Custom Formatting A String Value For Text Label

In my project, I have a function that runs and spits out a 5 digit number into a label on my interface. The number can be a double or a float but I would like it to display like ###+##.##

Example Number 12345.67

Shown like 123+45.67

The output will always be a 5 digit number with decimals. I researched data formatting specifically number formatting but haven't come across anything specific for this case. This is where I change the number to a string and assign it to a label. Please help and thank you in advance for your time. 

NSString *outputNumber = [NSString stringWithFormat:@"%f",numberHere];

_stationing.text = outputNumber;

Upvotes: 2

Views: 1117

Answers (2)

jeswang
jeswang

Reputation: 1027

Hope this help

NSStirng *numberString = [NSString stringWithFormat:@"%.2f",numberHere];

NSString *firstPart = [numberString substringWithRange:NSMakeRange(0, 3)];
NSString *secondPart [numberString substringWithRange:NSMakeRange(3, 5)];

NSString *outputString = [NSString stringWithFormat:@"%@+%@", firstPart, secondPart];

If the number's format is not permanent, you should check the length first.

Upvotes: 0

rmaddy
rmaddy

Reputation: 318894

There are a couple of ways this could be done.

NSMutableString *outputNumber = [[NSString stringWithFormat:@"%.2f", numberHere] mutableCopy];
[outputNumber insertString:@"+" atIndex:outputNumber.length - 5];

_stationing.text = outputNumber;

Another:

int high = numberHere / 100;
float low = numberHere - (high * 100);
NSString *outputNumber = [NSString stringWithFormat:@"%d+%.2f", high, low];

These approaches won't work well if the number is less than 100.

Upvotes: 1

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