android - ListView中的隐藏字段传递一个变量

Question

我正在尝试构建我的第一个应用程序，它几乎可以从网上的 XML 文件创建列表。只要我点击一个列表项，它就会打开另一个 Activity 并访问另一个在线生成的 XML 文件，其中包含该项目的详细信息。我设法使列表正常工作以及包含详细信息的第二个 Activity 窗口。剩下要做的唯一一件事就是将 id 从一个 Activity 传递到另一个 Activity 。有没有办法将每个条目的 ID 存储在列表项中？我没有使用本地 SQLite 数据库或任何东西，所以如果可能的话，我需要找到一种“即时”执行此操作的方法提前致谢

Answer 1

谢谢我让它工作!!这是代码，以防万一有人遇到同样的问题:

package en.android.itleaked.com;

import java.net.URL;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;

import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.InputSource;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.Toast;

public class getReleases extends Activity {
    public ListView lv1;
    private static final int ACTIVITY_CREATE = 0;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        getFeed();

    }


    public void getFeed() {
        try {
            URL url = new URL("http://www.it-leaked.com/app/main.php");
            DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
            DocumentBuilder db = dbf.newDocumentBuilder();
            Document doc = db.parse(new InputSource(url.openStream()));
            doc.getDocumentElement().normalize();
            NodeList nodeList = doc.getElementsByTagName("item");
            String lv_arr[] = new String[nodeList.getLength()];
            final String lv_arr_id[] = new String[nodeList.getLength()];  
            for (int i = 0; i < nodeList.getLength(); i++) {
                Node node = nodeList.item(i);
                Element fstElmnt = (Element) node;
                NodeList nameList = fstElmnt.getElementsByTagName("title");
                Element nameElement = (Element) nameList.item(0);
                nameList = nameElement.getChildNodes();
                lv_arr[i] = ((Node) nameList.item(0)).getNodeValue();

                NodeList idList = fstElmnt.getElementsByTagName("id");
                Element idElement = (Element) idList.item(0);
                idList = idElement.getChildNodes();
                lv_arr_id[i] = ((Node) idList.item(0)).getNodeValue();
            }

            lv1=(ListView)findViewById(R.id.ListView01);
            lv1.setAdapter(new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, lv_arr));

            lv1.setTextFilterEnabled(true);
            lv1.setOnItemClickListener(new OnItemClickListener() {
                    @Override
                    public void onItemClick(AdapterView<?> a, View v, int position, long id) {
                            Intent i = new Intent(getReleases.this, showReleases.class);
                            i.putExtra("id", lv_arr_id[position]);
                            startActivityForResult(i, ACTIVITY_CREATE);
                    }
            });


        }

            catch (Exception e) {
                Toast.makeText(this, "Error: " + e, Toast.LENGTH_LONG).show();
            }
        }

}

这是接收端:

package en.android.itleaked.com;

import android.app.Activity;
import android.os.Bundle;
import android.widget.Toast;

public class showReleases extends Activity {
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.releasedetails);

        Bundle extras = getIntent().getExtras();
        if (extras != null) {
            String releaseid = extras.getString("id");
            Toast.makeText(this, releaseid, Toast.LENGTH_LONG).show();
        }
    }
}