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我是Android新手。我創建了一個用於xml解析的應用程序，但出現了一些錯誤。它意外停止。我盡力而爲，但我無法解決問題。請幫助我。DOM XML解析android
package example.xmlparsing;
import java.util.ArrayList;
import java.util.HashMap;
import org.w3c.dom.Document;
import org.w3c.dom.NodeList;
import android.R.string;
import android.os.Bundle;
import android.app.Activity;
import android.app.ListActivity;
import android.sax.Element;
import android.view.Menu;
import android.widget.ListAdapter;
import android.widget.ListView;
import android.widget.SimpleAdapter;
public class MainActivity extends ListActivity {
static final String URL = "http://api.androidhive.info/pizza/?format=xml";
static final String KEY_ITEM = "item";
static final String KEY_ID = "id";
static final String KEY_NAME = "name";
static final String KEY_COST = "cost";
static final String KEY_DESC = "description";
ArrayList<HashMap<String,String> > menu=new ArrayList<HashMap<String,String>>();
ListView lv;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
XMLParser parser=new XMLParser();
String xml=parser.getXmlFromUrl(URL);
Document doc=parser.getDomelement(xml);
NodeList n1=doc.getElementsByTagName(KEY_ITEM);
for(int i=0;i<n1.getLength();i++){
HashMap<String, String> mp=new HashMap<String, String>();
Element e= (Element) n1.item(i);
mp.put(KEY_ID,parser.getValue(e, KEY_ID));
mp.put(KEY_NAME, parser.getValue(e, KEY_NAME));
mp.put(KEY_COST,parser.getValue(e, KEY_COST));
mp.put(KEY_DESC, parser.getValue(e, KEY_DESC));
menu.add(mp);
}
ListAdapter adapter=new SimpleAdapter(this,menu,
R.layout.list_item,
new String[]{KEY_NAME,KEY_COST,KEY_DESC},new int[]{
R.id.name, R.id.desciption, R.id.cost });
setListAdapter(adapter);
lv = getListView();
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
}
*********Android Manifest***********
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="example.xmlparsing"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="8" />
<uses-permission android:name="android.permission.INTERNET" />
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name="example.xmlparsing.MainActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
logcat的
07-17 12:21:20.770: D/AndroidRuntime(352): Shutting down VM
07-17 12:21:20.770: W/dalvikvm(352): threadid=1: thread exiting with uncaught exception (group=0x4001d800)
07-17 12:21:20.820: E/AndroidRuntime(352): FATAL EXCEPTION: main
07-17 12:21:20.820: E/AndroidRuntime(352): java.lang.RuntimeException: Unable to start activity ComponentInfo{example.xmlparsing/example.xmlparsing.MainActivity}: java.lang.ClassCastException: org.apache.harmony.xml.dom.ElementImpl
07-17 12:21:20.820: E/AndroidRuntime(352): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2663)
07-17 12:21:20.820: E/AndroidRuntime(352): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679)
07-17 12:21:20.820: E/AndroidRuntime(352): at android.app.ActivityThread.access$2300(ActivityThread.java:125)
07-17 12:21:20.820: E/AndroidRuntime(352): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033)
07-17 12:21:20.820: E/AndroidRuntime(352): at android.os.Handler.dispatchMessage(Handler.java:99)
07-17 12:21:20.820: E/AndroidRuntime(352): at android.os.Looper.loop(Looper.java:123)
07-17 12:21:20.820: E/AndroidRuntime(352): at android.app.ActivityThread.main(ActivityThread.java:4627)
07-17 12:21:20.820: E/AndroidRuntime(352): at java.lang.reflect.Method.invokeNative(Native Method)
07-17 12:21:20.820: E/AndroidRuntime(352): at java.lang.reflect.Method.invoke(Method.java:521)
07-17 12:21:20.820: E/AndroidRuntime(352): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
07-17 12:21:20.820: E/AndroidRuntime(352): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
07-17 12:21:20.820: E/AndroidRuntime(352): at dalvik.system.NativeStart.main(Native Method)
07-17 12:21:20.820: E/AndroidRuntime(352): Caused by: java.lang.ClassCastException: org.apache.harmony.xml.dom.ElementImpl
07-17 12:21:20.820: E/AndroidRuntime(352): at example.xmlparsing.MainActivity.onCreate(MainActivity.java:48)
07-17 12:21:20.820: E/AndroidRuntime(352): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
07-17 12:21:20.820: E/AndroidRuntime(352): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2627)
07-17 12:21:20.820: E/AndroidRuntime(352): ... 11 more
07-17 12:21:24.549: I/Process(352): Sending signal. PID: 352 SIG: 9