0

我正在为 Android 开发一个应用程序。我的应用程序解析一个 XML 远程文件，并将第一个标签的数据存储在地图的 ArraList 中，并将第二个标签的数据存储在地图的另一个 ArrayList 中。我将在这里发布我的 XML：

<?xml version="1.0" encoding="UTF-8"?>
<Programs>
    <Program programNumber="1" imgURL="http://www.photovideolife.com/userfiles/Placeholder%2001.jpg" description="Lorem ipsum dolor sit er elit">
        <Episode pN="1" episodeNumber="1" transmissionName="Titolo" date="29 Giu 2013" time1="14:30" time2="" channel="IRIS" channelLogo="http://indiscrezioni.files.wordpress.com/2010/06/logo_iris.jpg">
        </Episode>
        <Episode pN="1" episodeNumber="1" transmissionName="Titolo" date="29 Giu 2013" time1="" time2="16:30" channel="La7" channelLogo="http://www.tabaccheriavenza.it/media/logo/la7.jpg">
        </Episode>
        <Episode pN="1" episodeNumber="2" transmissionName="Titolo" date="01 Lug 2013" time1="14:30" time2="" channel="IRIS" channelLogo="http://indiscrezioni.files.wordpress.com/2010/06/logo_iris.jpg">
        </Episode>
        <Episode pN="1" episodeNumber="2" transmissionName="Titolo" date="01 Lug 2013" time1="" time2="16:30" channel="la7" channelLogo="http://www.tabaccheriavenza.it/media/logo/la7.jpg">
        </Episode>
    </Program>
    <Program programNumber="2" imgURL="http://mesa.umich.edu/files/mesa/field/image/placeholder2.png" description="Lorem ipsum dolor sit er elit">
        <Episode pN="2" episodeNumber="1" transmissionName="Titolo 1" date="30 Giu 2013" time1="13:30" time2="" channel="Rai 1" channelLogo="http://i822.photobucket.com/albums/zz145/Mattelufregn/Loghi%20canali%20tv/70px-Logo_Rai_1_2010svg50x50.png">
        </Episode>
        <Episode pN="2" episodeNumber="1" transmissionName="Titolo 1" date="30 Giu 2013" time1="" time2="18:30" channel="Rai 5" channelLogo="http://www.tuttotv.info/wp-content/uploads/2011/04/logo_rai5_50.jpg">
        </Episode>
        <Episode pN="2" episodeNumber="2" transmissionName="Titolo 1" date="01 Lug 2013" time1="13:30" time2="" channel="Rai 1" channelLogo="http://i822.photobucket.com/albums/zz145/Mattelufregn/Loghi%20canali%20tv/70px-Logo_Rai_1_2010svg50x50.png">
        </Episode>
        <Episode pN="2" episodeNumber="2" transmissionName="Titolo 1" date="01 Lug 2013" time1="" time2="18:30" channel="Rai 5" channelLogo="http://www.tuttotv.info/wp-content/uploads/2011/04/logo_rai5_50.jpg">
        </Episode>
    </Program>
    <Program programNumber="3" imgURL="http://wp.contempographicdesign.com/wp_paramount/wp-content/themes/paramount/images/image_placeholder_lrg.jpg" description="Lorem ipsum dolor sit er elit">
        <Episode pN="3" episodeNumber="1" transmissionName="Titolo 2" date="30 Giu 2013" time1="10:30" time2="" channel="Canale 5" channelLogo="http://www.mozaic.qa/logo/canale5.jpg">
        </Episode>
        <Episode pN="3" episodeNumber="1" transmissionName="Titolo 2" date="30 Giu 2013" time1="" time2="17:30" channel="Italia 1" channelLogo="http://upload.wikimedia.org/wikipedia/it/thumb/3/30/Logo_Italia_1.svg/50px-Logo_Italia_1.svg.png">
        </Episode>
        <Episode pN="3" episodeNumber="2" transmissionName="Titolo 2" date="01 Lug 2013" time1="10:30" time2="" channel="Canale 5" channelLogo="http://www.mozaic.qa/logo/canale5.jpg">
        </Episode>
        <Episode pN="3" episodeNumber="2" transmissionName="Titolo 2" date="01 Lug 2013" time1="" time2="17:30" channel="Italia 1" channelLogo="http://upload.wikimedia.org/wikipedia/it/thumb/3/30/Logo_Italia_1.svg/50px-Logo_Italia_1.svg.png">
        </Episode>
    </Program>
</Programs>

在解析结束时，我有一个用于程序的 ArrayList 和一个用于 Episode 的 ArrayList。您可以看到 Programs 和 Episode 有一个公共字段（programNumber 和 pN），现在我需要将存储在 Episode 的 ArrayList 中的数据用于正确的程序。我怎么能这样做？我在网上找到了这个解决方案：

for (HashMap<String, String> programsMap : programs) {
    for (Map.Entry<String, String> entry : programsMap.entrySet()) {
   // I added some code here
  }
}

我该如何解决这个问题？感谢您的建议。

4

3 回答 3

2 
String programNumber = "3";
// create the result list (empty initially)
List<Map<String, String>> episodesForProgramNumber = new ArrayList<>();

// loop through all the episodes
for (Map<String, String> episode : allEpisodes) {

    // if the current episode has the given program number, add it to the result
    if (programNumber.equals(episode.get("pN")) {
        episodesForProgramNumber.add(episode);
    }
}

但是Java是一种OO语言。您不应该使用地图来存储数据。您应该使用 和 类型的Program对象Episode。Program包含List<Episode>一个.

于 2013-07-18T11:09:16.527 回答
1

你在考虑关系。在 SQL 数据库中，你会做一些你想做的事情。通过键将剧集映射到节目。

我会做一点面向对象的。创建一个Program和一个Episode类，其属性与您的 XML 结构中的元素具有相同的属性。除此之外，您的Program班级应该有一个剧集列表（像这样：）List<Episode> episodes，您可以在其中添加属于该节目的所有剧集。

于 2013-07-18T11:09:35.243 回答
0

确实需要使用对象，但我想 JB Nizet 的解决方案会起作用。下次使用对象。

于 2013-07-18T13:20:01.020 回答