iOS Read file lines into array

Question

I have a file containing a couple thousands words on individual lines. I need to load all of these words into separate elements inside an array so first word will be Array[0], second will be Array[1] etc.

I found some sample code elsewhere but Xcode 4.3 says it's using depreciated calls.

NSString *tmp;
NSArray *lines;
lines = [[NSString stringWithContentsOfFile:@"testFileReadLines.txt"] 
                   componentsSeparatedByString:@"\n"];

NSEnumerator *nse = [lines objectEnumerator];

while(tmp = [nse nextObject]) {
    NSLog(@"%@", tmp);
}

Ilanchezhian · Accepted Answer · 2013-06-21 05:25:25Z

19

Yes, + (id)stringWithContentsOfFile:(NSString *)path has been deprecated.

See Apple's documentation for NSString

Instead use + (id)stringWithContentsOfFile:(NSString *)path encoding:(NSStringEncoding)enc error:(NSError **)error

Use as follows:

lines = [[NSString stringWithContentsOfFile:@"testFileReadLines.txt"
                                   encoding:NSUTF8StringEncoding 
                                      error:nil] 
            componentsSeparatedByString:@"\n"];

Update: - Thanks to JohnK

NSCharacterSet *newlineCharSet = [NSCharacterSet newlineCharacterSet];
NSString* fileContents = [NSString stringWithContentsOfFile:@"testFileReadLines.txt"
                                                   encoding:NSUTF8StringEncoding
                                                      error:nil];
NSArray *lines = [fileContents componentsSeparatedByCharactersInSet:newlineCharSet];

edited Jun 21, 2013 at 5:25

answered Mar 19, 2012 at 6:02

Ilanchezhian

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1 Comment

JohnK Over a year ago

For generality you should use componentsSeparatedByCharactersInSet:[NSCharacterSet newlineCharacterSet], viz.:

NSString* contents = [NSString stringWithContentsOfFile:@"testFileReadLines.txt"                                encoding:NSUTF8StringEncoding error:nil]; NSArray *lines = [contents componentsSeparatedByCharactersInSet:[NSCharacterSet newlineCharacterSet]];

.

Ravi · Accepted Answer · 2012-03-19 06:01:29Z

1

Check this. You might have to use an updated method.

answered Mar 19, 2012 at 6:01

Ravi

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1 Comment

Flatlyn Over a year ago

Thanks for the help. Gave Aadhira the correct answer for was slightly more complete.

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