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Android 发布时间：2022-04-28 发布网站：大佬教程 code.js-code.com

大佬教程收集整理的这篇文章主要介绍了android – 如何从字符串中删除动态字符串？，大佬教程大佬觉得挺不错的，现在分享给大家，也给大家做个参考。

我是 Android开发的菜鸟,我试图从字符串中删除一串动态字符.我的字符串：

"Beginning of String....&lt;img src="http://webaddress.com" height="1" width="1"/&gt;"

我想删除“& lt”,“& gt”以及它们之间的所有内容.我想要的只是“字符串的开头……”到目前为止,我已经尝试过这个并没有成功.

description = description.replaceFirst("(?s)(&lt)(.*?)(&gt)","$1$3");

此外,我尝试了类似的类似字符串,它工作正常,所以我不明白我做错了什么.

description = description.replaceFirst("(?s)(<sub>)(.*?)(</sub>)","$1$3");

我的课

public class RSSReader {

private final static String BOLD_OPEN = "<B>";
private final static String BOLD_CLOSE = "</B>";
private final static String BREAK = "<BR>";
private final static String ITALIC_OPEN = "<I>";
private final static String ITALIC_CLOSE = "</I>";
private final static String SMall_OPEN = "<smaLL>";
private final static String SMall_CLOSE = "</smaLL>";


public static List<JSONObject> getLatestRSSFeed(){
    String Feed = "http://Feeds.Feedburner.com/MetalMarketCommentary";
    //http://globoesporte.globo.com/dynamo/futebol/times/vasco/RSS2.xml
    //http://Feeds.Feedburner.com/GoldMoneyGoldResearch +
    //http://Feeds.Feedburner.com/GoldsilvercomNews +
    //http://Feed43.com/7466558277232702.xml
    //http://Feeds.Feedburner.com/SilverGoldDaily
    //http://Feeds.Feedburner.com/MetalMarketCommentary
    //http://link.brightcove.com/services/player/bcpid1683318714001?bckey=AQ~~,AAAAC59qSJk~,vyxcsD3OtBPHZ2UIrFX2-wdCLTYNymNn&bclid=1644543007001&bctid=1854182861001

    RSSHandler rh = new RSSHandler();
    List<Article> articles =  rh.getLatestArticles(Feed);
    Log.e("RSS ERROR","number of articles " + articles.size());
    return fillData(articles);
}



private static List<JSONObject> fillData(List<Article> articles) {

    List<JSONObject> items = new ArrayList<JSONObject>();
    for (Article article : articles) {
        JSONObject current = new JSONObject();
        try {
            buildJsonObject(article,current);
        } catch (JSONException E) {
            Log.e("RSS ERROR","Error creaTing JSON Object from RSS Feed");
        }
        items.add(current);
    }

    return items;
}



private static void buildJsonObject(Article article,JSONObject current) throws JSONException {
    String title = article.gettitle();
    String description = article.getDescription();
    description = description.replaceFirst("(?s)(<sub>)(.*?)(</sub>)","$1$3");
    int start = description.indexOf(".&");
    description= description.subString(0,start);
    String date = article.getPubDate();
    String imgLink = article.getImgLink();

    StringBuffer sb = new StringBuffer();
    sb.append(BOLD_OPEN).append(titlE).append(BOLD_CLOSE);
    sb.append(BREAK);
    sb.append(description);
    sb.append(BREAK);
    sb.append(SMall_OPEN).append(ITALIC_OPEN).append(datE).append(ITALIC_CLOSE).append(SMall_CLOSE);

    current.put("text",Html.fromHtml(sb.toString()));
    current.put("imageLink",imgLink);
}
}

XML我正在解析

<item>
           <title>Gold Market Recap Report</title>
           <link>http://Feedproxy.google.com/~r/MetalMarketCommentary/~3/jGYtkXdSKWs/mid-session-gold_703.html</link>
           <description>&lt;img src="http://www.cmegroup.com/images/1x1trans.gif?desTination=http://www.cmegroup.com/education/market-commentary/Metals/2012/09/mid-session-gold_703.html" alt=""/&gt;For the week December gold forged a Trading range of roughly $37 an ounce. With gold prices attimes seemingly on the rocks and poised for a downside washout it was a change of pace to see afresh upside breakout in the Friday morning Trade....&lt;img src="http://Feeds.Feedburner.com/~r/MetalMarketCommentary/~4/jGYtkXdSKWs" height="1" width="1"/&gt;</description>
           <pubDate>Fri,21 Sep 2012 19:50:37 GMT</pubDate>
           <guid isPermaLink="false">http://www.cmegroup.com/education/market-commentary/Metals/2012/09/mid-session-gold_703.html?source=RSS</guid>
           <dc:date>2012-09-21T19:50:37Z</dc:date>
           <Feedburner:origLink>http://www.cmegroup.com/education/market-commentary/Metals/2012/09/mid-session-gold_703.html?source=RSS</Feedburner:origLink>
      </item>

解决方法

String String = "Beginning of String....&lt;img src=\"http://webaddress.com\" height=\"1\" width=\"1\"/&gt;"; //Escape whatever has to be escaped
    System.out.println(String);
    int start = String.indexOf("&");
    int end = String.lasTindexOf("&");
    String temp = String.subString(start,(end+3));
    String = String.replace(temp,"");
    System.out.println(String);