iOS - 使用空格解析字符串

Question

我是iOS新手，所以如果这是初学者级别的问题，请原谅我。

我有一个字符串“hu_HU匈牙利语：匈牙利语”，我想将它放入像{“hu”，“HU”，“Hungary：Hungarian”}这样的数组中。我将如何解析它以删除空格，然后删除下划线？

Answer 1

使用NSString的componentsSeparatedByCharactersInSet:方法

Answer 2

要获得所需效果，您必须将'_'更改为''，反之亦然。然后你可以使用componentsSeparatedByString，如下所示：

NSString *source = @"hu_HU Hungary:Hungarian";
source = [source stringByReplacingOccurrencesOfString:@"_" withString:@" "];
NSArray *components = [source componentsSeparatedByString:@" "];
NSLog(@"%@",components);

Answer 3

NSString *theStr = @"hu_HU Hungary:Hungarian";
NSArray  *pieces = [theStr componentsSeparatedByCharactersInSet: [NSCharacterSet characterSetWithCharactersInString: @"_ "]];
//pieces = {"hu", "HU", "Hungary:Hungarian"}

pieces = [theStr componentsSeparatedByCharactersInSet: [[NSCharacterSet  alphanumericCharacterSet] invertedSet]];
//pieces = {"hu", "HU", "Hungary", "Hungarian"}
//the motivation for this is a better defined set of non-alphanumeric characters

Answer 4

你在这里：

NSString *myString = @"hu_HU Hungary:Hungarian";
myString = [myString stringByReplacingOccurrencesOfString:@"_" withString:@" "];
NSArray *myArray = [myString componentsSeparatedByString:@" "];

Answer 5

所有这些答案都有一个恼人的问题。他们假设这些物品被一个且只有一个空间隔开。

NSString *theStr = @"hu_HU Hungary:Hungarian";
NSArray  *pieces = [theStr componentsSeparatedByCharactersInSet: [NSCharacterSet characterSetWithCharactersInString: @"_ "]];
//pieces = {"hu", "HU", "Hungary:Hungarian"}

NSString *theStr = @"hu_HU  Hungary:Hungarian"; // note extra space
NSArray  *pieces = [theStr componentsSeparatedByCharactersInSet: [NSCharacterSet characterSetWithCharactersInString: @"_ "]];
//pieces = {"hu", "HU", " ", "Hungary:Hungarian"}