CODEWITHSUNDEEP
iphoneobjective-ciosnsstringuitextfield
DataGuy
DataGuy

Reputation: 1725

Validation, UITextField

I am working on some simple form validation and need some assistance. Basically, I just need to make sure a UITextField doesn't have a '0' or no value whatsoever (nil) when a user runs a simple calculation. If the field does contain either/or a label will be changed to notify the user. Here is my statement:

if ([abc.text isEqualToString:@"0"] || [time.text isEqualToString:nil]) {
    self.123.text = @"Please enter a time";
} else {  whatever }

Currently the 123 label is outputting NaN if nothing is entered into the abc UITextField.

Upvotes: 0

Views: 344

Answers (2)

iArezki
iArezki

Reputation: 1271

if (![abc.text isEqualToString:@"0"]  &&
    ![time.text == nil]) 
    {
        self.123.text = @"Please enter a time";
    }
    else     
    { 
         whatever 
    }

Upvotes: 1

CrimsonDiego
CrimsonDiego

Reputation: 3616

Replace [time.text isEqualToString:nil] with [time.text isEqualToString:@""]

You are trying to compare string with a nil object, and since a nil object (nil) is not the same as an empty string (@""), it fails.

Upvotes: 1

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