如何用空格填充NSString?

本文介绍了如何用空格填充NSString?的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

例如，我需要NSString至少有8个字符....而不是使用循环在其上添加左填充空格，反正有这样做吗?

For example, I need the NSString have at least 8 chars....instead of using a loop to add the left pad spaces on this, is there anyway to do it?

Examples: Input: |Output: Hello | Hello Bye | Bye Very Long |Very Long abc | abc

推荐答案

以下是如何执行此操作的示例:

Here is an example of how you can do it:

int main (int argc, const char * argv[]) { NSString *str = @"Hello"; int add = 8-[str length]; if (add > 0) { NSString *pad = [[NSString string] stringByPaddingToLength:add withString:@" " startingAtIndex:0]; str = [pad stringByAppendingString:str]; } NSLog(@"'%@'", str); return 0; }