iphone – NSString中是否有setwidth？

概述我想用固定宽度的空格追加我的字符​​串;例如,我想以这种格式显示数据： 1 faizan 1 locked 10/20/20081 faizan 1 locked 10/20/20081 faizan 1 locked 10/20/20081 faizan 1 locked 10/20/2008 但这仅适用于相同 我想用固定宽度的空格追加我的字符​​串;例如,我想以这种格式显示数据：

1   faizan   1    locked    10/20/20081   faizan   1    locked    10/20/20081   faizan   1    locked    10/20/20081   faizan   1    locked    10/20/2008

但这仅适用于相同长度的字符串.如果字符串是这样的：

1   faizan   1    locked    10/20/20082   faizanali   1    locked    10/20/20083   ali turab gilani    1    locked    10/20/2008

那么这不会修复空间.这样我可以用相同数量的空格显示数据,我试过这个：

Nsstring *TitleColumn = [[Nsstring stringWithFormat:@"%@:",Title] stringBypaddingTolength:20 withString:@" " startingAtIndex:0];serializedValue = [serializedValue stringByAppendingFormat:@"%@%@",TitleColumn,value];

但这也行不通. Objective-C是否具有类似于C和其他语言的setwIDth-type函数？

解决方法 你是这样做的吗？

/ *定义辅助方法* /

- (Nsstring *)formattedStringWithStrings:(NSArray *)strings {    Nsstring *str1 = [[strings objectAtIndex:0] stringBypaddingTolength:3 withString:@" " startingAtIndex:0];    Nsstring *str2 = [[strings objectAtIndex:1] stringBypaddingTolength:20 withString:@" " startingAtIndex:0];    Nsstring *str3 = [[strings objectAtIndex:2] stringBypaddingTolength:3 withString:@" " startingAtIndex:0];    Nsstring *str4 = [[strings objectAtIndex:3] stringBypaddingTolength:10 withString:@" " startingAtIndex:0];    Nsstring *str5 = [[strings objectAtIndex:4] stringBypaddingTolength:15 withString:@" " startingAtIndex:0];    return [Nsstring stringWithFormat:@"%@%@%@%@%@",str1,str2,str3,str4,str5]; }

/ *使用帮助方法* /

NSArray *strings = [NSArray arrayWithObjects:@"1",@"faizan",@"1",@"locked",@"10/20/2008",nil];NSLog(@"%@",[self formattedStringWithStrings:strings]);strings = [NSArray arrayWithObjects:@"2",@"faizanali",[self formattedStringWithStrings:strings]);strings = [NSArray arrayWithObjects:@"3",@"ali turab gilani",[self formattedStringWithStrings:strings]);

/ *和输出* /

1  faizan              1  locked    10/20/20082  faizanali           1  locked    10/20/20083  ali turab gilani    1  locked    10/20/2008

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