CODEWITHSUNDEEP
objective-ccocoa-touchiosnsmutablestring
Blane Townsend
Blane Townsend

Reputation: 3048

How to set the text of a previously-created NSMutableString?

I have an NSMutableString called makeString. I want to create it at the beginning of my program without having to set its text. I then want to be able to set its text. I am currently using the following to create it.

NSMutableString *make2String = [[NSMutableString alloc] initWithString:@""];

I am then using the following to set its text value.

make2String = [NSString stringWithFormat:@"Gold.png"];

Is this ok to do or is there a better way to set an NSMutableString's text?

Upvotes: 2

Views: 2764

Answers (3)

CGTheLegend
CGTheLegend

Reputation: 774

make2String = [NSMutableString stringWithFormat:@"Gold.png"];

FYI: This is how I allocate NSMutableStrings without setting text

NSMutableString *string = [[NSMutableString alloc] init];

Upvotes: 0

Anomie
Anomie

Reputation: 94844

That is not ok, you are replacing your mutable string with an ordinary immutable string (and leaking the original mutable string in the process). You could do [NSMutableString stringWithFormat:@"Gold.png"] after releasing the old string if you wanted to go that route. Or you could use NSMutableString's setString: method to set the content.

But if you're not actually mutating the string and just assigning different strings, you don't need NSMutableString at all. Just do make2String = @"Gold.png"; and be done with it.

Upvotes: 4

Ken
Ken

Reputation: 31171

  NSMutableString * aString = [NSMutableString alloc];
  aString = [aString init];
  [aString setString:@"yourText"];
  [aString setString:@"yourNewText"];
  [aString setString:@"yourNewNewText"];
  //...
  [aString release];

Upvotes: 1

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