我正在与服务器一起工作,需要将文本下载到我的iOS应用程序中。唯一的问题是:所有像“é à ç”这样的字符都被替换为“\ U008”之类的代码。有没有办法解决这个问题,将此代码替换为正确的字符?
NSString *encodedString = textToParse;
NSString *decodedString = [NSString stringWithUTF8String:[encodedString cStringUsingEncoding:[NSString defaultCStringEncoding]]];
我测试了一些编码,NSMacOSRomanStringEncoding
很适合。
我的测试如下:
NSString *encodedString = [NSString stringWithCString:"Você realmente deseja sair da área restrita" encoding:NSMacOSRomanStringEncoding];
请记住,消息必须是C字符串("string"
),而不是NSString
(@"string"
)
您可以获取字符缓冲区并验证每个字符,如下所示:
- (NSString *) removeUnicode:(NSString *) unicodeString {
NSUInteger len = [unicodeString length];
unichar buffer[len+1];
[unicodeString getCharacters:buffer range:NSMakeRange(0, len)];
unichar okBuffer[len+1];
int index = 0;
for(int i = 0; i < len; i++) {
if(buffer[i] < 128) {
okBuffer[index] = buffer[i];
index = index + 1;
}
}
NSString *removedUnicode = [[NSString alloc] initWithCharacters:okBuffer length:index];
return removedUnicode;
}
或者您可以使用这个示例:
NSCharacterSet *notAllowedChars = [[NSCharacterSet characterSetWithCharactersInString:[NSCharacterSet alphanumericCharacterSet]] invertedSet];
stringWithOutUnicode = [[stringWithUnicode componentsSeparatedByCharactersInSet:notAllowedChars] componentsJoinedByString:@""];
并且您可以创建自己的有效字符集并获取不允许的字符
NSString *allowedCharacters = @"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";
NSCharacterSet *notAllowedChars = [[NSCharacterSet characterSetWithCharactersInString: allowedCharacters] invertedSet];