CODEWITHSUNDEEP
iosobjective-c
nobbsy
nobbsy

Reputation: 87

Check if Text Field NEARLY Matches Set Text? iOS

Does anyone now how I can check if a text field NEARLY matches a set text?

I know how to check if it exactly matches, but i want it to know if its even close to the set text

So if they type HELLO WORD it indicates its close but not exact match?

if (([textfield.text isEqual:@"HELLO WORLD"]))
{
    NSLog(@"Correct");
} else {
    NSLog(@"Incorrect");
}

Upvotes: 0

Views: 255

Answers (5)

abh
abh

Reputation: 1239

NSString *string = @"HELLO WORLD I AM JACK";
if ([string rangeOfString:@"HELLO WORLD"].location == NSNotFound) {
  NSLog(@"string does not contain HELLO WORLD");
} else {
  NSLog(@"string contains HELLO WORLD!");
}

Upvotes: 0

iiFreeman
iiFreeman

Reputation: 5175

use 

NSString caseInsensitiveCompare:

or

- (NSComparisonResult)compare:(NSString *)aString 
                      options:(NSStringCompareOptions)mask`

Upvotes: 0

Zeeshan
Zeeshan

Reputation: 4244

Use this

For Case Insensitive : 

if( [textfield.text caseInsensitiveCompare:@"My Case sensitiVE"] == NSOrderedSame )  {   
    // strings are equal except for possibly case 
}

For Case Sensitive :

if([textfield.text isEqualToString:@"My Case sensitiVE"]) {  
    // Case sensitive Compare 
}

Upvotes: 1

Rashad
Rashad

Reputation: 11197

You can compare each index of two string and see how many difference is there. And you should define your "nearly match", it may be difference in single character or in multiple character. And decide if you should accept it or reject it.

If you like algorithm Longest Common Subsequence is a key to your goal.. :)

Upvotes: 0

René
René

Reputation: 2942

This library may be of use to you. And since it's open source, you can check the source to see how it's done. :)

Upvotes: 1

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