ios - 翻译属性字符串

Question

我有一个带有属性字符串的 UILabel。这是它的打印屏幕:

现在，我必须将这个属性字符串翻译成英语和意大利语。我正在寻找一种方法来做到这一点。我可以在代码中逐个构建这个属性字符串吗？我只找到了一个解决方案，其中设置了整个字符串，然后按范围设置了属性。但是当我翻译字符串时，我不知道范围了，因为单词更长或更小。

Answer 1

另一种选择是创建本地化的 .rtf 文件，从中创建 NSAttributedStrings :

NSAttributedString *attributedStr = [[NSAttributedString alloc] initWithData:data options:@{NSDocumentTypeDocumentAttribute:NSRTFTextDocumentType} documentAttributes:nil error:nil];

要使用动态格式(例如，设置颜色、特定于某些应用程序设置的字体)，我使用了一些类似 html 的格式，带有 1 个字符的标签，之后我从应用程序内部应用格式。

// NSMutableAttributedString category method
/**
 * Updates the attributes of xml elements (where the xml tags are formed of 1 single char) with the passed attributes from param `tagsAttributes`
 * Current version doesn't support recursive tags (tags in tags)
 * All tags of form '<char>' or '</char>' will be used as formatting (the resulting string should not be expected to have any tags of this form)
 * @param tagsAttributes - list of attribute dictionaries, where the key is the tag name */
-(void)formatCharXMLTagsUsingAttributes:(NSDictionary *)tagsAttributes {
    int strippedLength = 0;

    NSString *str = [[self string] copy];
    NSScanner *scanner = [NSScanner scannerWithString:str];
    while (![scanner isAtEnd]) {
        NSString *tag = nil;
        do {
            [scanner scanUpToString:@"<" intoString:nil];
            [scanner scanString:@"<" intoString:nil];
            if (scanner.scanLocation + 2 < [str length] && [str characterAtIndex:scanner.scanLocation + 1] == '>') {
                [scanner scanUpToString:@">" intoString:&tag];
                [scanner scanString:@">" intoString:nil];
            }
        } while (!tag && ![scanner isAtEnd]);

        if ([scanner isAtEnd]) {
            break;
        }

        NSString *endTag = [NSString stringWithFormat:@"</%@>", tag];
        NSString *tmpString;
        [scanner scanUpToString:endTag intoString:&tmpString];
        [scanner scanString:endTag intoString:nil];
        NSRange range;
        strippedLength += 7; // start tag + end tag length
        range.location = scanner.scanLocation - [tmpString length] - strippedLength;
        range.length = [tmpString length] + 7;
        [self replaceCharactersInRange:range withString:tmpString];
        range.length -= 7;
        [self addAttributes:tagsAttributes[tag] range:range];
    }
}

该方法之后可以这样使用:

NSDictionary* highlightAttributes = @{NSForegroundColorAttributeName: [UIColor blueColor],
                                 NSFontAttributeName: [UIFont boldSystemFontOfSize:16]};
NSDictionary *xmlTagsAttributes = @{@"b": highlightAttributes};
[attrStr formatCharXMLTagsUsingAttributes:xmlTagsAttributes];

在哪里attrStr可能是 @"Press <b>Next</b> button to ..." .