iOS11 通讯录复制 电话前后 特殊不可见字符 \u0000202d

phoneString __NSCFString * @"\U0000202d135 4567 6218\U0000202c" 0x00000001c005ce00

(lldb) po phoneString

135 4567 6218

(lldb) po phoneString.length

15

(lldb) 

ios 11之后从电话簿复制粘贴会出现特殊不可见字符 需要处理

+ (NSString *)getSeparatedPhoneNumberWithString:(NSString *)phoneString {

    NSCharacterSet *characterSet = [NSCharacterSet characterSetWithCharactersInString:@"0123456789"];

    NSString * string = phoneString;

    //invertedSet方法是去反字符,把所有的除了characterSet里的字符都找出来(包含去空格功能)

    NSCharacterSet *specCharacterSet = [characterSet invertedSet];

    NSArray * strArr = [string componentsSeparatedByCharactersInSet:specCharacterSet];

    return [strArr componentsJoinedByString:@""];

}