Problem with NSString

I have done this many times before and never got a issue but i have got a problem now i just cant solve.

I have a NSMutableString declared in the H File. Named TheString. I have a IBOutlet of a UItextfield declared named TextField In viewdidload i fill this string with some text. That goes fine and when i NSLOG it everything works.

Then o开发者_如何学运维n a button press i do:

TheString = [TheString stringByReplacingOccurrencesOfString:@"And"
withString:TextField.text];                                                         

I have done this loads of times and it always works. However this time i build the app with no errors and press the button and it crashes. I checked the console and there are no errors when it crashes. EDIT

In the H File i have this also:

@property(nonatomic, retain) NSMutableString *TheString;

And in viewdidload i do this

TheString = [NSMutableString alloc];

And i synthesize I give it some text and NSLOG it and it is all working. If anyone could please help me with this it would be great!

Thanks

Have you allocated TheString.

Try this

TheString = [[NSMutableString alloc] initWithString:@"Some text here"];
TheString = [TheString stringByReplacingOccurrencesOfString:@"And" withString:TextField.text];

Make sure you release it when you are done using it

This TheString = [NSMutableString alloc]; should not be done. Change it to

TheString = [[NSMutableString alloc] init];

and after button event call

[TheString replaceOccurrencesOfString: @"And" 
withString: TextField.text options: 0 range: NSMakeRange(0, [receiver length])];