SAX 解析器返回标题的第一个字符

发布于 2024-12-23 08:56:18 字数 1140 浏览 1 评论 0原文

我正在构建一个使用 SAX 解析器解析 RSS 提要的 Android 应用程序。当我打印标题时，我只得到它的第一个字符。

public void characters(char ch[], int start, int length)
    {       

        String theString = new String(ch,start,length);
        //Log.i("RSSReader","characters[" + theString + "]");

        switch (currentstate)
        {
            case RSS_TITLE:
                _item.setTitle(theString);
                Log.i("tag","Length:"+length);
                currentstate = 0;
                break;
                }
       }

这里，日志显示长度始终为 1。这甚至发生在描述中。在它与另一个提要一起工作之前，现在当我切换到另一个提要时它遇到了麻烦。这是示例标题标签：

<title>&quot;The Color of the Night is not always Black II_(Explored Highest Position #1)&quot; by xris74</title>

我在屏幕上打印的是“即（引用）

提前致谢！

编辑1：我添加了字符串生成器。

1. Added new string builder variable:
StringBuilder newString;
2. On Element Start, if its title
newString = new StringBuilder();
3. On Element End, if its title
_item.setTitle(newString.toString());
4. In characters function, if its title tag, than:
newString.append(ch,start,length);

原文

I am building an Android app that parses an RSS feed using SAX parser. When I print the title, I only get the first character of it.

public void characters(char ch[], int start, int length)
    {       

        String theString = new String(ch,start,length);
        //Log.i("RSSReader","characters[" + theString + "]");

        switch (currentstate)
        {
            case RSS_TITLE:
                _item.setTitle(theString);
                Log.i("tag","Length:"+length);
                currentstate = 0;
                break;
                }
       }

Here, the log says that the length is 1 always. This even happens with the description. Before it was working with another feed, now its got trouble when I switched to another feed.
Here is example title tag:

<title>"The Color of the Night is not always Black II_(Explored Highest Position #1)" by xris74</title>

What I get printed on screen is " that is (quote)

Thanks in advance!

EDIT 1:
I added up string builder.

1. Added new string builder variable:
StringBuilder newString;
2. On Element Start, if its title
newString = new StringBuilder();
3. On Element End, if its title
_item.setTitle(newString.toString());
4. In characters function, if its title tag, than:
newString.append(ch,start,length);

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与君绝 2024-12-30 08:56:18

characters() 函数可以在开始标记之后和结束标记之前调用多次。每次它都会为您带来一些字节，但不一定会在一次调用中一次带来所有字节。

因此，您可以在onStartTag函数中创建一个StringBuilder。然后每次输入字符函数时附加到该 StringBuilder。然后，当您为此标记输入 onEndTag 函数时，您的 StringBuilder 将拥有所有字符。
追加的内容由 characters 函数的 offset 和 length 参数确定