stringByAddingPercentEscapesUsingEncoding已弃用

Question

这是不推荐使用的“stringByAddingPercentEscapesUsingEncoding”，我想用更新一行替换这一行。

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

Answer 1

尝试以下代码行：

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

<强> stringByAddingPercentEncodingWithAllowedCharacters:

  

通过替换all返回从接收器创建的新字符串   不在指定集合中的字符，包含百分比编码字符。

字符集传递给 - stringByAddingPercentEncodingWithAllowedCharacters：

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

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

Answer 2

使用此代码

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

Answer 3

此代码对我有用：

NSString *url = [modalData.imageURL stringByAddingPercentEncodingWithAllowedCharacters:[NSCharacterSet URLFragmentAllowedCharacterSet]];