1.截取字符串
NSString *string =@"sdfsfsfsAdfsdf";
string = [string substringToIndex:7];//截取掉下標7之后的字符串
NSLog(@"截取的值為：%@",string);
[string substringFromIndex:2];//截取掉下標2之前的字符串
NSLog(@"截取的值為：%@",string);
2.匹配字符串
NSString*string =@"sdfsfsfsAdfsdf";
NSRangerange = [stringrangeOfString:@"f"];//匹配得到的下標
NSLog(@"rang:%@",NSStringFromRange(range));
string = [string substringWithRange:range];//截取范圍類的字符串
NSLog(@"截取的值為：%@",string);
3.分隔字符串
NSString*string =@"sdfsfsfsAdfsdf";
NSArray *array = [string componentsSeparatedByString:@"A"]; //
NSString *str1 = [array objectAtIndex:0];
NSString *str2 = [array objectAtIndex:1];
從字符A中分隔成2個元素的數組
NSLog(@"array:%@",array); //結果是adfsfsfs和dfsdf
若獲取某指定字符串，可重復使用第三步分割字符串進行分割知道
獲取想要的
NSString *string =@"sdfsfsfsAdfsdf";
NSArray *array = [string componentsSeparatedByString:@"A"]; //
NSString *str1 = [array objectAtIndex:0];
NSString *str2 = [array objectAtIndex:1];
NSArray *str1 = [string componentsSeparatedByString:@"X"]; //自定義
NSString *string1 = [array objectAtIndex:0];
NSString *string2 = [array objectAtIndex:1];
