@interface NSString (DeletWhiteSpace)
// 返回一个去掉前后空格的字符串或者下划线，如果自己是一个nil 返回@“”
- (NSString *)trimmingWhiteSpace;
- (NSString *)aTrimmingWhiteSpaceInString;
@end
#import "NSString+DeletWhiteSpace.h"
@implementation NSString (DeletWhiteSpace)
- (NSString *)trimmingWhiteSpace{
if (self) {
return [selfstringByTrimmingCharactersInSet:[NSCharacterSetwhitespaceAndNewlineCharacterSet]];
}
return nil;
}
- (NSString *)aTrimmingWhiteSpaceInString{
NSArray *stringArray = [selfcomponentsSeparatedByCharactersInSet:[NSCharacterSetwhitespaceAndNewlineCharacterSet]];
if (stringArray) {
NSMutableString *string = [NSMutableStringstring];
for (NSString *str in stringArray) {
if ([str trimmingWhiteSpace]) {
[string appendString:[str trimmingWhiteSpace]];
}
}
return string;
}
return nil;
}
@end
