stringByAddingPercentEscapesUsingEncoding 已弃用 [英] stringByAddingPercentEscapesUsingEncoding deprecated

问题描述

这是不推荐使用的stringByAddingPercentEscapesUsingEncoding"，我想用更新一替换这一行.

This is deprecated "stringByAddingPercentEscapesUsingEncoding", I want to replace this line with update one.

NSString *encodedString = [modalData.imageURL stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];

推荐答案

试试下面这行代码:

NSString *encodedString = [modalData.imageURL stringByAddingPercentEncodingWithAllowedCharacters:[NSCharacterSet URLHostAllowedCharacterSet]];

stringByAddingPercentEncodingWithAllowedCharacters:

通过替换所有返回从接收器生成的新字符串不在指定集中的字符，使用百分比编码字符.

Returns a new string made from the receiver by replacing all characters not in the specified set with percent encoded characters.

字符集被传递到 - stringByAddingPercentEncodingWithAllowedCharacters:

Character sets are passed to - stringByAddingPercentEncodingWithAllowedCharacters:

+ (NSCharacterSet *)URLUserAllowedCharacterSet;
+ (NSCharacterSet *)URLPasswordAllowedCharacterSet;
+ (NSCharacterSet *)URLHostAllowedCharacterSet;
+ (NSCharacterSet *)URLPathAllowedCharacterSet;
+ (NSCharacterSet *)URLQueryAllowedCharacterSet;
+ (NSCharacterSet *)URLFragmentAllowedCharacterSet;

参考:https://developer.apple.com/reference/foundation/nsstring/1411946-stringbyaddingpercentencodingwit

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