计算NSString的字符长度(和length有区别) 

 1 - (int)calc_charsetNum:(NSString*)_str 
 2 { 
 3 unsigned result = 0; 
 4 const char *tchar=[_str UTF8String]; 
 5 if (NULL == tchar) { 
 6 return result; 
 7 } 
 8 
 9 
10 for (int i=0; i<strlen(tchar);) 
11 { 
12 unsigned t = tchar; 
13 if( t >= 224 ) 
14 i = i+3; 
15 else if( t >= 192 ) 
16 i = i+2; 
17 else 
18 i++; 
19 result++; 
20 } 
21 
22 return result; 
23 
24 }

先留下来备用

 
posted @ 2014-10-21 16:20  lxl奋小斗  阅读(554)  评论(0)  编辑  收藏  举报