如何在目標c中修剪字符串中的特殊字符

Question

我想修剪字符串中特殊字符的出現

String  has :    
prevs: Case Number                                                                    
____________________

在這個我想從字符串中刪除--------這個破折號。我已經嘗試過這樣：

NSCharacterSet *trim = [NSCharacterSet characterSetWithCharactersInString:@"-"];
    NSString *stringNew = [[previousString2 componentsSeparatedByCharactersInSet:trim] componentsJoinedByString:@""];

提前致謝！

Answer 1

嘗試這個：

NSString *stringWithoutDash = [yourString stringByReplacingOccurrencesOfString:@"-" withString:@""];

Answer 2

NSString *trimedString = [myString stringByReplacingOccurrencesOfString:@"-" withString:@""];

Answer 3

使用正則表達式，模式[\\\\s_]{4,}搜索4個或更多的空格或下划線字符。

NSString *trimmedString = [previousString2 stringByReplacingOccurrencesOfString:@"[\\s_]{4,}" withString:@"" options:NSRegularExpressionSearch range:NSMakeRange(0, previousString2.length)];

如果下划線字符確實是破折號，則會在模式中替換該字符。

Answer 4

您可以使用以下代碼刪除特殊字符串。

NSString *yourString = @"This is your string with speical character --------";
NSCharacterSet *removedCharacterSet = [NSCharacterSet characterSetWithCharactersInString:@"--------"];
NSString *finalString = [[yourString componentsSeparatedByCharactersInSet:removedCharacterSet] componentsJoinedByString:@""];
NSLog (@"Your final string : %@", finalString);