Check if an NSString is just made out of spaces

objective-c string cocoa-touch cocoa nsstring
Suchi picture Suchi · Sep 1, 2011 · Viewed 18.2k times · Source

I want to check if a particular string is just made up of spaces. It could be any number of spaces, including zero. What is the best way to determine that?

Answer

Alexsander Akers picture Alexsander Akers · Sep 1, 2011 
NSString *str = @"         ";
NSCharacterSet *set = [NSCharacterSet whitespaceCharacterSet];
if ([[str stringByTrimmingCharactersInSet: set] length] == 0)
{
    // String contains only whitespace.
}

Related questions

Split NSString multiple times on the same separator

I am currently receiving a string like this: @"Sam|26,Hannah|22,Adam|30,Carlie|32,Jan|54" And I am splitting it like this: testArray = [[NSArray alloc] init]; NSString *testString = [[NSString alloc] initWithFormat:@"Sam|26,Hannah|22,Adam|30,Carlie|32,Jan|54,Steve|56,Matty|24,Bill|30,Rob|30,Jason|33,Mark|22,…

Read More
Objective-C - Remove last character from string

In Objective-C for iOS, how would I remove the last character of a string using a button action?

Read More
Capitalize or change case of an NSString in Objective-C

I was wondering how to capitalize a string found in an object in an NSMutableArray. An NSArray contains the string 'April' at index 2. I want this to be changed to 'APRIL'. Is there something simple like this? viewNoteDateMonth.text = [[displayDate …

Read More