如何识别和删除换行符和空格? [英] How to identify and remove newline and white spaces?

问题描述

我正在通过按组件分隔字符串来创建一个 nsmutable 数组，这会导致在数组中插入大量新行和空格，如何识别和删除它们?

I am making an nsmutable array by separating a string by component it is causing a lot of new line and white spaces to be inserted in the array how to identify and remove them?

for (int i=0;i<contentsOfFile.count; i++) 
 {
        if(!([[contentsOfFile objectAtIndex:i]isEqual:@"\n"]||[[contentsOfFile     objectAtIndex:i]isEqual:@""]))
       [arrayToBereturned addObject:[contentsOfFile objectAtIndex:i]];
 }

我使用的这段代码无法识别所有新行字符谢谢

this code which i am using cannot identify all new line charectors thanks

推荐答案

如果你想要一个没有空格的数组:

If you want an array without whitespace:

NSString *string = @"Hello, World!";
NSCharacterSet *separator = [NSCharacterSet whitespaceAndNewlineCharacterSet];
NSArray *stringComponents = [string componentsSeparatedByCharactersInSet:separator];

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