iOS compare button title to string

I'm just learning how to code so thanks for your patience on this simple question.

Here's my code:

- (IBAction)buttonWasPressed:(id)sender {  
    NSString *buttonName = [sender titleForState:UIControlStateNormal];  
    if (buttonName == @"Button 1") {  
        do something 
    }

How do I compare the title of 开发者_高级运维the button passed as sender to a string?

Much thanks for the help.

in objective-c you can't compare strings using "==", instead you should use the method isEqualToString from the NSString class to compare a string with another.

if ([buttonName isEqualToString: @"Button 1"]) {
  // do something
}

Use -isEqualToString method:

if ([buttonName isEqualToString:@"Button 1"])
   ...

using == you compare ponters, not the actual string values they contain

The better way to compare string is:

NSString *string1 = <your string>;
NSString *string2 = <your string>;

if ([string1 caseInsensitiveCompare:string2] == NSOrderedSame) {
    //strings are same
} else {
    //strings are not same
}

I've found that with Xcode 8.3.1, it is necessary to do:

if([self.myButton isEqual: @"My text"]) {
//do this
}