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웹 서비스를 구문 분석하고 결과를지도에 표시하려면 비동기 작업에서 다음 코드를 사용하고 있습니다 (HTC 욕망에서 실제 장치에서).웹 서비스에서 데이터를 가져 오는 동안 강제 종료/충돌 발생
protected Void doInBackground(Void... params) {
try {
/** Handling XML */
spf = SAXParserFactory.newInstance();
sp = spf.newSAXParser();
xr = sp.getXMLReader();
String response = doGet("http://www.abc.com");
myXMLHandler = new MyXMLHandler();
xr.setContentHandler(myXMLHandler);
//xr.parse(new InputSource(sourceUrl.openStream()));
xr.parse(new InputSource(new StringReader(response)));
}
catch (UnknownHostException e) {
e.printStackTrace();
}
catch (NullPointerException e) {
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (SAXException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (ParserConfigurationException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
markerssList = MyXMLHandler.markerList;
mapOverlays_results =mapView.getOverlays();
mapOverlays_results.remove(itemizedOverlay);
if(markerssList.getLatitude().size()>0)
{
Drawable drawable = HSLoc_tabActivity.this.getResources().getDrawable(R.drawable.flag);
itemizedOverlay = new CustomItemizedOverlay(drawable, HSLoc_tabActivity.this);
for (int i = 0; i < markerssList.getLatitude().size(); i++) {
ss1 = markerssList.getLatitude().get(i);
ss2 = markerssList.getLongitude().get(i);
ss3 = markerssList.getName().get(i);
ss4 = markerssList.getAddress().get(i);
ss5 = markerssList.getCity().get(i);
markerssList.getPostal_code().get(i);
try
{
p = new GeoPoint((int) (Double.parseDouble(ss1) * 1E6),
(int) (Double.parseDouble(ss2) * 1E6));
overlayItem = new OverlayItem(p, " ",
""+ss3+"\n"+ss4+"\n"+ss5);
itemizedOverlay.addOverlay(overlayItem);
}
catch(NullPointerException e1)
{
}
}
mapOverlays_results.add(itemizedOverlay);
//mapView.getOverlays().add(itemizedOverlay);
mapController = mapView.getController();
mapController.animateTo(p);
mapController.setZoom(12);
mapView.postInvalidate();
}
코드가 낮은 네트워크 응용 프로그램의 힘에 fine..but 작동 폐쇄와 나는 그에게 다음과 같은 오류 있어요 :
01-02 13:41:29.222: WARN/System.err(6562): java.net.UnknownHostException: www.abc.com.au
01-02 13:41:29.222: WARN/System.err(6562): at java.net.InetAddress.lookupHostByName(InetAddress.java:509)
01-02 13:41:29.232: WARN/System.err(6562): at java.net.InetAddress.getAllByNameImpl(InetAddress.java:297)
01-02 13:41:29.232: WARN/System.err(6562): at java.net.InetAddress.getAllByName(InetAddress.java:256)
01-02 13:41:29.232: WARN/System.err(6562): at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:136)
01-02 13:41:29.232: WARN/System.err(6562): at org.apache.http.impl.conn.AbstractPoolEntry.open(AbstractPoolEntry.java:164)
01-02 13:41:29.232: WARN/System.err(6562): at org.apache.http.impl.conn.AbstractPooledConnAdapter.open(AbstractPooledConnAdapter.java:119)
01-02 13:41:29.232: WARN/System.err(6562): at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:359
)
및
을01-02 13:41:29.312: ERROR/AndroidRuntime(6562): FATAL EXCEPTION: AsyncTask #2
01-02 13:41:29.312: ERROR/AndroidRuntime(6562): java.lang.RuntimeException: An error occured while executing doInBackground()
01-02 13:41:29.312: ERROR/AndroidRuntime(6562): at android.os.AsyncTask$3.done(AsyncTask.java:200)
01-02 13:41:29.312: ERROR/AndroidRuntime(6562): at java.util.concurrent.FutureTask$Sync.innerSetException(FutureTask.java:274)
01-02 13:41:29.312: ERROR/AndroidRuntime(6562): at java.util.concurrent.FutureTask.setException(FutureTask.java:125)
01-02 13:41:29.312: ERROR/AndroidRuntime(6562): at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:308)
01-02 13:41:29.312: ERROR/AndroidRuntime(6562): at java.util.concurrent.FutureTask.run(FutureTask.java:138)
01-02 13:41:29.312: ERROR/AndroidRuntime(6562): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1088)
01-02 13:41:29.312: ERROR/AndroidRuntime(6562): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:581)
01-02 13:41:29.312: ERROR/AndroidRuntime(6562): at java.lang.Thread.run(Thread.java:1027)
01-02 13:41:29.312: ERROR/AndroidRuntime(6562): Caused by: java.lang.NullPointerException
01-02 13:41:29.312: ERROR/AndroidRuntime(6562): at com.app.LocatorApp.HSLoc_tabActivity$backgroundLoadResults.doInBackground(HSLoc_tabActivity.java:545)
01-02 13:41:29.312: ERROR/AndroidRuntime(6562): at com.app.LocatorApp.HSLoc_tabActivity$backgroundLoadResults.doInBackground(HSLoc_tabActivity.java:1)
이 오류를 어떻게 처리합니까?
XML을 구문 분석하기 전에 응답을 보려고 했습니까? 당신은 정말로 그것을 얻고 있습니까? –