UITextField将不间断的空格转换为空格？ [英] UITextField converts non-breaking spaces to spaces?

问题描述

看来，UITextFields会转换所有不间断空格（nbsp，U + 00A0 ）到空格（U + 0020）。这会导致编辑区域设置特定数字时出现问题。例如，在法语/法语区域中，不间断空格分隔1和％形成1％。但是，由于UITextField将分隔符字符转换为空格，因此区域设置感知NSNumberFormatter无法解析语言环境字符串并将其转换为数字。

It seems UITextFields convert all non-breaking spaces (nbsp, U+00A0) to spaces (U+0020). This causes problems for the editing of locale specific numbers. For instance, in the French/France locale, the non-breaking space separates 1 and % to form "1 %". However, since the UITextField converts the separator character to a space, the locale aware NSNumberFormatter is unable to parse the locale string and convert it to a number.

以下代码段说明这个问题。

The following code snippet illustrates this problem.

NSLocale *fr_FR = [[[NSLocale alloc] initWithLocaleIdentifier:@"fr_FR"] autorelease];

NSNumberFormatter *percentageFormatter = [[NSNumberFormatter alloc] init];
[percentageFormatter setFormatterBehavior:NSNumberFormatterBehavior10_4];
[percentageFormatter setGeneratesDecimalNumbers:TRUE];
[percentageFormatter setNumberStyle:NSNumberFormatterPercentStyle];
[percentageFormatter setLocale:fr_FR];

NSDecimalNumber *one = [NSDecimalNumber decimalNumberWithString:@"0.01"];

// will be "1 %" where the separator character is a nbsp (this is correct)
NSString *percentage = [percentageFormatter stringFromNumber:one];

UITextField *textField = [[UITextField alloc] init];
textField.text = percentage;

// will be "1 %" where the separator character is a space (this is wrong)
NSString *textFieldValue = textField2.text;

// returns an indeterminate value: may throw an exception, may return nil, etc
// this should return the number 0.01
NSNumber *percentageNumber = [percentageFormatter numberFromString:textFieldValue];

我的问题：如何防止UITextField将不间断的空格转换为空格？

My question: How do I prevent the UITextField from converting non-breaking spaces to spaces?

我了解我可以使用的工作，如果我在一个使用不间断空格的区域设置，它可以工作。但是，如果有UITextField的属性/行为，我不知道要保留，我想知道。

I understand the work arounds I can employ to hack this so that it works if I'm in a locale that uses non-breaking spaces. However, if there is property/behavior of the UITextField that I'm not aware of to preserve nbsp, I'd like to know.

推荐答案

我很确定这个功能不存在。如何为iPhone打开错误报告？

I'm pretty sure this feature doesn't exist. How about opening a bug report for the iPhone?

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