NSString 字元串處理：截取字元串、比對字元串、分隔字元串

-1.截取字元串

NSString*string =@"sdfsfsfsAdfsdf";
string = [string substringToIndex:];//截取掉下标7之後的字元串
NSLog(@"截取的值為：%@",string);
[string substringFromIndex:];//截取掉下标2之前的字元串
NSLog(@"截取的值為：%@",string);
           

• 2.比對字元串

NSString*string [email protected]"sdfsfsfsAdfsdf";
NSRangerange = [stringrangeOfString:@"f"];//比對得到的下标
NSLog(@"rang:%@",NSStringFromRange(range));
string = [string substringWithRange:range];//截取範圍類的字元串
NSLog(@"截取的值為：%@",string);
           

• 3.分隔字元串

NSString*string [email protected]"sdfsfsfsAdfsdf";

NSArray *array = [string componentsSeparatedByString:@"A"]; //從字元A中分隔成2個元素的數組
NSLog(@"array:%@",array); //結果是adfsfsfs和dfsdf