如何使用Objective-C按空格分隔字符串？

Question

假设我有一个像这样的字符串:

hello world       this may     have lots   of sp:ace or little      space

我想将此字符串分隔为:

@"hello", @"world", @"this", @"may", @"have", @"lots", @"of", @"sp:ace", @"or", @"little", @"space"

谢谢.

Answer 1

NSString *aString = @"hello world       this may     have lots   of sp:ace or little      space";
NSArray *array = [aString componentsSeparatedByCharactersInSet:[NSCharacterSet whitespaceCharacterSet]];
array = [array filteredArrayUsingPredicate:[NSPredicate predicateWithFormat:@"SELF != ''"]];

_{输入此表格未经测试}

Answer 2

我建议两步法:

NSArray *wordsAndEmptyStrings = [yourLongString componentsSeparatedByCharactersInSet:[NSCharacterSet whitespaceCharacterSet]];
NSArray *words = [wordsAndEmptyStrings filteredArrayUsingPredicate:[NSPredicate predicateWithFormat:@"length > 0"]];

Answer 3

这对我有用

NSString * str = @"Hi Hello How Are You ?";
NSArray * arr = [str componentsSeparatedByString:@" "];
NSLog(@"Array values are : %@",arr);

Answer 4

用块做这个很容易,尝试这样的事情:

NSString* s = @"hello world       this may     have lots   of space or little      space";
NSMutableArray* ar = [NSMutableArray array];
[s enumerateSubstringsInRange:NSMakeRange(0, [s length]) options:NSStringEnumerationByWords usingBlock:^(NSString* word, NSRange wordRange, NSRange enclosingRange, BOOL* stop){
    [ar addObject:word];
}];

Answer 5

NSString * mainString = @"Today is your day";
NSArray * array = [mainString componentsSeparatedByString:@" "];
NSLog(@"Expected string is : %@",array);