こんにちは私はこのプロジェクトにしばらく取り組んでいて、現時点では非常に行き詰まっています。私はまだAndroidを初めて使用し、MediaWikiAPIで作成したXMLファイルから情報を取得する最初のアプリに取り組んでいます。アプリの[プレーヤー]タブを選択しようとすると、強制的に閉じてしまい、理由がわかりません。プレーヤーのアクティビティとWikiparserアクティビティ用に持っているコードは次のとおりです。
package com.lvlup.kikurself.scotttest;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.ArrayList;
import android.app.ListActivity;
import android.content.Intent;
import android.os.Bundle;
import android.text.Html;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.AdapterView.OnItemClickListener;
import java.io.IOException;
import org.xml.sax.SAXException;
//import com.lvlup.kikurself.scotttest.WikiParser.Cm;
public class scottPlayers extends ListActivity {
public void onCreate(Bundle icicle) {
super.onCreate(icicle);
WikiParser p = new WikiParser();
ArrayList<String> titles = new ArrayList<String>();
try {
p.parseInto(new URL("http://scottlandminecraft.wikia.com/api.php?action=query&list=categorymembers&cmtitle=Category:Players&cmlimit=500&format=xml"), titles);
} catch (MalformedURLException e) {
} catch (IOException e) {
} catch (SAXException e) {}
//String[] values = new String[50];
//values = res;
ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,
android.R.layout.simple_list_item_1, titles);
setListAdapter(adapter);
final ListView playersList = getListView();
playersList.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View v, int position, long thisID)
{
Object o = (playersList.getItemAtPosition(position));
String playerName_temp = (o.toString());
Intent newIntent = new Intent(v.getContext(), playerDisp.class);
newIntent.putExtra("tempN", playerName_temp);
startActivity(newIntent);
}
});
//get your data back again with: String fName = getIntent().getExtras().getInt("fname");
}}
次に、WikiParser関数のコードは次のとおりです。
package com.lvlup.kikurself.scotttest;
import java.io.BufferedInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.List;
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
import android.sax.*;
import android.text.TextUtils;
import android.util.Xml;
import android.util.Xml.Encoding;
public class WikiParser {
private static class CmListener implements StartElementListener {
final List<String> mTitles;
CmListener(List<String> titles) {
mTitles = titles;
}
@Override
public void start(Attributes attributes) {
String title = attributes.getValue("", "title");
if (!TextUtils.isEmpty(title)) {
mTitles.add(title);
}
}
}
public void parseInto(URL url, List<String> titles) throws IOException, SAXException {
HttpURLConnection con = (HttpURLConnection) url.openConnection();
try {
parseInto(new BufferedInputStream(con.getInputStream()), titles);
} finally {
con.disconnect();
}
}
public void parseInto(InputStream docStream, List<String> titles) throws IOException, SAXException {
RootElement api = new RootElement("api");
Element query = api.requireChild("query");
Element categoryMembers = query.requireChild("categorymembers");
Element cm = categoryMembers.requireChild("cm");
cm.setStartElementListener(new CmListener(titles));
Xml.parse(docStream, Encoding.UTF_8, api.getContentHandler());
}
}
そこにあります..私は私の間違いを学ぶためにここにいるので、誰もが私のコードと私が改善するために何ができるかについて私に話すことができます。
編集：LogCatも含めて、ありがとう。
08-06 04:33:58.837: D/dalvikvm(539): GC_FOR_ALLOC freed 62K, 3% free 9883K/10179K, paused 64ms
08-06 04:33:58.917: I/dalvikvm-heap(539): Grow heap (frag case) to 13.641MB for 4096016-byte allocation
08-06 04:33:59.037: D/dalvikvm(539): GC_CONCURRENT freed <1K, 3% free 13882K/14215K, paused 12ms+17ms
08-06 04:33:59.748: D/gralloc_goldfish(539): Emulator without GPU emulation detected.
08-06 04:34:05.977: D/AndroidRuntime(539): Shutting down VM
08-06 04:34:05.987: W/dalvikvm(539): threadid=1: thread exiting with uncaught exception (group=0x409961f8)
08-06 04:34:06.067: E/AndroidRuntime(539): FATAL EXCEPTION: main
08-06 04:34:06.067: E/AndroidRuntime(539): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.lvlup.kikurself.scotttest/com.lvlup.kikurself.scotttest.scottPlayers}: android.os.NetworkOnMainThreadException
08-06 04:34:06.067: E/AndroidRuntime(539): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1955)
08-06 04:34:06.067: E/AndroidRuntime(539): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1980)
08-06 04:34:06.067: E/AndroidRuntime(539): at android.app.ActivityThread.access$600(ActivityThread.java:122)
08-06 04:34:06.067: E/AndroidRuntime(539): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1146)
08-06 04:34:06.067: E/AndroidRuntime(539): at android.os.Handler.dispatchMessage(Handler.java:99)
08-06 04:34:06.067: E/AndroidRuntime(539): at android.os.Looper.loop(Looper.java:137)
08-06 04:34:06.067: E/AndroidRuntime(539): at android.app.ActivityThread.main(ActivityThread.java:4340)
08-06 04:34:06.067: E/AndroidRuntime(539): at java.lang.reflect.Method.invokeNative(Native Method)
08-06 04:34:06.067: E/AndroidRuntime(539): at java.lang.reflect.Method.invoke(Method.java:511)
08-06 04:34:06.067: E/AndroidRuntime(539): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
08-06 04:34:06.067: E/AndroidRuntime(539): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
08-06 04:34:06.067: E/AndroidRuntime(539): at dalvik.system.NativeStart.main(Native Method)
08-06 04:34:06.067: E/AndroidRuntime(539): Caused by: android.os.NetworkOnMainThreadException
08-06 04:34:06.067: E/AndroidRuntime(539): at android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1084)
08-06 04:34:06.067: E/AndroidRuntime(539): at java.net.InetAddress.lookupHostByName(InetAddress.java:391)
08-06 04:34:06.067: E/AndroidRuntime(539): at java.net.InetAddress.getAllByNameImpl(InetAddress.java:242)
08-06 04:34:06.067: E/AndroidRuntime(539): at java.net.InetAddress.getAllByName(InetAddress.java:220)
08-06 04:34:06.067: E/AndroidRuntime(539): at libcore.net.http.HttpConnection.<init>(HttpConnection.java:71)
08-06 04:34:06.067: E/AndroidRuntime(539): at libcore.net.http.HttpConnection.<init>(HttpConnection.java:50)
08-06 04:34:06.067: E/AndroidRuntime(539): at libcore.net.http.HttpConnection$Address.connect(HttpConnection.java:351)
08-06 04:34:06.067: E/AndroidRuntime(539): at libcore.net.http.HttpConnectionPool.get(HttpConnectionPool.java:86)
08-06 04:34:06.067: E/AndroidRuntime(539): at libcore.net.http.HttpConnection.connect(HttpConnection.java:128)
08-06 04:34:06.067: E/AndroidRuntime(539): at libcore.net.http.HttpEngine.openSocketConnection(HttpEngine.java:308)
08-06 04:34:06.067: E/AndroidRuntime(539): at libcore.net.http.HttpEngine.connect(HttpEngine.java:303)
08-06 04:34:06.067: E/AndroidRuntime(539): at libcore.net.http.HttpEngine.sendSocketRequest(HttpEngine.java:282)
08-06 04:34:06.067: E/AndroidRuntime(539): at libcore.net.http.HttpEngine.sendRequest(HttpEngine.java:232)
08-06 04:34:06.067: E/AndroidRuntime(539): at libcore.net.http.HttpURLConnectionImpl.getResponse(HttpURLConnectionImpl.java:273)
08-06 04:34:06.067: E/AndroidRuntime(539): at libcore.net.http.HttpURLConnectionImpl.getInputStream(HttpURLConnectionImpl.java:168)
08-06 04:34:06.067: E/AndroidRuntime(539): at com.lvlup.kikurself.scotttest.WikiParser.parseInto(WikiParser.java:35)
08-06 04:34:06.067: E/AndroidRuntime(539): at com.lvlup.kikurself.scotttest.scottPlayers.onCreate(scottPlayers.java:29)
08-06 04:34:06.067: E/AndroidRuntime(539): at android.app.Activity.performCreate(Activity.java:4465)
08-06 04:34:06.067: E/AndroidRuntime(539): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1049)
08-06 04:34:06.067: E/AndroidRuntime(539): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1919)
08-06 04:34:06.067: E/AndroidRuntime(539): ... 11 more