從NSString的

Question

左側卸下白色的空間，我只需要從NSString的我的意思是

如果我有" This is a good day"的左側，取出白色的空間，我會"This is a good day"

只留下空間只有

任何建議，請

Answer 1

只需使用

NSString* result = [yourString stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceCharacterSet]]; 

它將從左至右以及直接從中間

去除所有多餘的空間，但不併刪除這兩個空白和\n使用

NSString* result = [yourString stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]]; 

Answer 2

NSString *str = @" This is a good day";  
NSArray *arrString = [str componentsSeparatedByString:@"T"]; 
NSString *strSpace = [arrString objectAtIndex:0]; // White space 
NSString *strString = [arrString objectAtIndex:1]; //This is a good day 

然後，您可以追加牛逼在字符串爲

NSString *strT = @"T"; 
strString = [strT stringByAppendingString:strString]; 

Answer 3

以下用於從您的中刪除白色和新的行符210。

NSString* result = [yourString stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]]; 

Answer 4

Nsstring *str=" This is a good day"; 

    while ([str rangeOfString:@" "].location != NSNotFound) { 
    str = [str stringByReplacingOccurrencesOfString:@" " withString:@" "]; 
} 

nslog(@"string after removing space %@",) 

Answer 5

這裏有一個解決方案，我想出了面臨着同樣的問題，當有：

- (NSString*)trimBlankCharactersFromBeginningOfString:(NSString*)originalString 
{ 
    //we are only trimming the characters on the left side of the string 
    NSInteger count = [originalString length]; 
    NSString *trimmedNewText = originalString; 
    for (int i = 0; i < count; i++) { 
     if([[originalString substringWithRange:NSMakeRange(i, 1)] rangeOfCharacterFromSet:[NSCharacterSet whitespaceCharacterSet]].location == NSNotFound) 
     { 
      trimmedNewText = [originalString substringFromIndex:i]; 
      break; 
     } 
     else 
     { 
      if(i+1 < count) 
      { 
       trimmedNewText = [originalString substringFromIndex:i+1]; 
      } 
      //since we are exiting the loop as soon as a non blank space character is found 
      //then this is just really checking to see if we are on the last character of an 
      //all whitespace string. can't say i+1 here because that would give an index out 
      //of bound exception 
      else 
      { 
       trimmedNewText = @""; 
      } 
     } 
    } 
    return trimmedNewText; 
} 

Answer 6

僅限微調向左一個解決方法是一個虛擬的字符添加到您的字符串的權，修剪該字符串，然後將其刪除。

NSString* tempString = [NSString stringWithFormat@"%@T", yourString]; 
NSString* result = [yourString stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceCharacterSet]]; 
return [result substringToIndex:[result length]-1];