iOS：如何避免在搜索栏中输入特殊字符？ [英] iOS: How to avoid special characters being entered in a search bar?

问题描述

我可能看错了，但现在，如果用户在搜索栏中输入某些特殊字符，应用程序将崩溃。这些包括\和'。

I may be looking at this incorrectly, but right now, if a user enters certain special characters in a search bar, the app will crash. These include \ and '.

撇号是一个问题，因为不是和不会会导致崩溃

The apostrophe is a problem, in that words like "isn't" and "doesn't" will cause a crash

我该如何解决这个问题？

How should I go about working around this problem?

非常感谢

Many thanks

推荐答案

在使用搜索字符串进行搜索之前，先对其进行过滤，如下所示：

Before doing a search using the search string, pre-filter it, like this:

NSString *safeSearchString = [[searchString componentsSeparatedByCharactersInSet:[[NSCharacterSet alphanumericCharacterSet] invertedSet]] componentsJoinedByString:@""];

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