objective-c 如何将百分号添加到 NSString
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原文地址: http://stackoverflow.com/questions/739682/
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How to add percent sign to NSString
提问by Ilya Suzdalnitski
I want to have a percentage sign in my string after a digit. Something like this: 75%.
我想在一个数字后在我的字符串中有一个百分号。像这样：75%。
How can I have this done? I tried:
我怎么能做到这一点？我试过：
[NSString stringWithFormat:@"%d\%", someDigit];
But it didn't work for me.
但它对我不起作用。
回答by mouviciel
The code for percent sign in NSStringformat is %%. This is also true for NSLog()and printf()formats.
百分号NSString格式的代码是%%. 对于NSLog()和printf()格式也是如此。
回答by binarybob
The escape code for a percent sign is "%%", so your code would look like this
百分号的转义码是“%%”，所以你的代码看起来像这样
[NSString stringWithFormat:@"%d%%", someDigit];
Also, all the other format specifiers can be found at Conceptual Strings Articles
此外，所有其他格式说明符都可以在概念字符串文章中找到
回答by Resh32
If that helps in some cases, it is possible to use the unicode character:
如果这在某些情况下有帮助，则可以使用 unicode 字符：
NSLog(@"Test percentage \uFF05");
回答by JRam13
The accepted answer doesn't work for UILocalNotification. For some reason, %%%%(4 percent signs) or the unicode character '\uFF05' only work for this.
接受的答案不适用于 UILocalNotification。出于某种原因，%%%%（4 个百分号）或 unicode 字符 ' \uFF05' 仅适用于此。
So to recap, when formatting your string you may use %%. However, if your string is part of a UILocalNotification, use %%%%or \uFF05.
所以回顾一下，在格式化字符串时，您可以使用%%. 但是，如果您的字符串是 UILocalNotification 的一部分，请使用%%%%或\uFF05。
回答by user1483392
seems if %%followed with a %@, the NSStringwill go to some strange codes
try this and this worked for me
似乎如果%%后跟 a %@，NSString则会转到一些奇怪的代码，试试这个，这对我有用
NSString *str = [NSString stringWithFormat:@"%@%@%@", @"%%",
[textfield text], @"%%"];
回答by Bhoopi
uese following code.
使用以下代码。
NSString *searchText = @"Bhupi"
NSString *formatedSearchText = [NSString stringWithFormat:@"%%%@%%",searchText];
will output: %Bhupi%
将输出：%Bhupi%
回答by serge-k
iOS 9.2.1, Xcode 7.2.1, ARC enabled
iOS 9.2.1、Xcode 7.2.1、ARC 已启用
You can always append the '%' by itself without any other format specifiers in the string you are appending, like so...
您始终可以单独附加 '%'，而无需在要附加的字符串中添加任何其他格式说明符，就像这样...
int test = 10;
NSString *stringTest = [NSString stringWithFormat:@"%d", test];
stringTest = [stringTest stringByAppendingString:@"%"];
NSLog(@"%@", stringTest);
For iOS7.0+
适用于 iOS7.0+
To expand the answer to other characters that might cause you conflict you may choose to use:
要将答案扩展到可能导致您冲突的其他字符，您可以选择使用：
- (NSString *)stringByAddingPercentEncodingWithAllowedCharacters:(NSCharacterSet *)allowedCharacters
- (NSString *)stringByAddingPercentEncodingWithAllowedCharacters:(NSCharacterSet *)allowedCharacters
Written out step by step it looks like this:
一步一步写出来是这样的：
int test = 10;
NSString *stringTest = [NSString stringWithFormat:@"%d", test];
stringTest = [[stringTest stringByAppendingString:@"%"]
stringByAddingPercentEncodingWithAllowedCharacters:
[NSCharacterSet alphanumericCharacterSet]];
stringTest = [stringTest stringByRemovingPercentEncoding];
NSLog(@"percent value of test: %@", stringTest);
Or short hand:
或简写：
NSLog(@"percent value of test: %@", [[[[NSString stringWithFormat:@"%d", test]
stringByAppendingString:@"%"] stringByAddingPercentEncodingWithAllowedCharacters:
[NSCharacterSet alphanumericCharacterSet]] stringByRemovingPercentEncoding]);
Thanks to all the original contributors. Hope this helps. Cheers!
感谢所有原始贡献者。希望这可以帮助。干杯!
