我正在使用 XML sax 解析来通过 Web 服务获取数据。它在 2.2 和 2.3 中运行良好，但在 4.x(ICS) 等更高版本中却不行。这里我的代码是...
btnlogin.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
checkNetworkStatus();
try
{
if(edtMailId.getText().toString().trim().equals(""))
{
showDialog(1);
}
else if(edtPwd.getText().toString().trim().equals(""))
{
showDialog(2);
}
else
{
final ProgressDialog progressdialog=ProgressDialog.show(Signin.this, "abc....", "Signing In...",true,true);
Handler handler=new Handler();
Runnable r=new Runnable() {
public void run() {
try
{
String _EmailID =edtMailId.getText().toString();
String _Password=edtPwd.getText().toString();
if(chkRem.isChecked())
{
getSharedPreferences("UserData", MODE_PRIVATE).edit().putString("remUsername",edtMailId.getText().toString()).commit();
}
else
{
getSharedPreferences("UserData", MODE_PRIVATE).edit().putString("remUsername","UnChecked").commit();
}
WebService ws=new WebService();
boolean loginResult=ws.checkUser(_EmailID, _Password);
if(loginResult){
//SAXParserFactory spf=SAXParserFactory.newInstance();
String URL = "http://10.0.2.2:2291/Ras.asmx/getUserDetails";
String charset = "UTF-8";
String query1;
try {
query1 = String.format("MailId=%s", URLEncoder.encode(_EmailID, charset));
URLConnection url = new URL(URL + "?" + query1).openConnection();
url.setRequestProperty("Accept-Charset", charset);
url.setDoOutput(true);
InputStream input =url.getInputStream();
SAXParserFactory saxParserFactory = SAXParserFactory.newInstance();
SAXParser saxParser = saxParserFactory.newSAXParser();
XMLReader xmlReader = saxParser.getXMLReader();
//saxParser=saxParserFactory.newSAXParser();
//xmlReader=saxParser.getXMLReader();
MyHandler mh=new MyHandler();
xmlReader.setContentHandler(mh);
xmlReader.parse(new InputSource(input));
Intent in=new Intent(getApplicationContext(),TabBar.class);
in.setAction(Intent.ACTION_MAIN);
in.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(in);
}
catch (UnsupportedEncodingException e3) {
// TODO Auto-generated catch block
e3.printStackTrace();
}
catch (IOException e2) {
// TODO Auto-generated catch block
e2.printStackTrace();
}
catch (ParserConfigurationException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
catch (SAXException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
catch (Exception e2) {
// TODO Auto-generated catch block
e2.printStackTrace();
}
}
else
{
txtErrormsg.setVisibility(View.VISIBLE);
txtErrormsg.setText("Incorrect Email Address or Password");
}
}
catch(Exception e)
{
//txtErrormsg.setVisibility(View.VISIBLE);
txtErrormsg.setText("Server Busy");
Log.e("SignIn", e.getMessage());
}
progressdialog.dismiss();
}
};
handler.postDelayed(r, 1000);
}
}
catch(Exception ex)
{
Log.e("Server Busy",ex.getMessage().toString());
}
}
});
这是我的处理程序类代码...
class MyHandler extends DefaultHandler
{
boolean is_FirstName=false;
boolean is_UserID=false;
@Override
public void startDocument() throws SAXException {
// TODO Auto-generated method stub
super.startDocument();
}
@Override
public void startElement(String uri, String localName, String name,
Attributes attributes) throws SAXException {
// TODO Auto-generated method stub
super.startElement(uri, localName, name, attributes);
if(localName.equals("FirstName")){
is_FirstName=true;
}
else if(localName.equals("UserID")){
is_UserID=true;
}
}
@Override
public void characters(char[] ch, int start, int length)
throws SAXException {
// TODO Auto-generated method stub
SharedPreferences.Editor edit=splogin.edit();
super.characters(ch, start, length);
if(is_FirstName){
edit.putString("FirstName", new String(ch,start,length));
}
else if(is_UserID){
edit.putString("UserID", new String(ch,start,length));
}
edit.commit();
}
@Override
public void endElement(String uri, String localName, String name)
throws SAXException {
// TODO Auto-generated method stub
super.endElement(uri, localName, name);
if(localName.equals("FirstName")){
is_FirstName=false;
}
else if(localName.equals("UserID")){
is_UserID=false;
}
}
@Override
public void endDocument() throws SAXException {
// TODO Auto-generated method stub
super.endDocument();
}
}
这是我的日志猫。
10-25 21:52:09.090: W/System.err(546): java.io.FileNotFoundException: http://0.0.0.0/rWS/r.asmx/getUserDetails?MailId=tej%40gmail.com
10-25 21:52:09.090: W/System.err(546): at libcore.net.http.HttpURLConnectionImpl.getInputStream(HttpURLConnectionImpl.java:177)
10-25 21:52:09.090: W/System.err(546): at com.eist.stats.Signin$1$2$1.run(Signin.java:194)
10-25 21:52:09.090: W/System.err(546): at android.os.Handler.handleCallback(Handler.java:605)
10-25 21:52:09.133: W/System.err(546): at android.os.Handler.dispatchMessage(Handler.java:92)
10-25 21:52:09.140: W/System.err(546): at android.os.Looper.loop(Looper.java:137)
10-25 21:52:09.140: W/System.err(546): at android.app.ActivityThread.main(ActivityThread.java:4340)
10-25 21:52:09.140: W/System.err(546): at java.lang.reflect.Method.invokeNative(Native Method)
10-25 21:52:09.140: W/System.err(546): at java.lang.reflect.Method.invoke(Method.java:511)
10-25 21:52:09.140: W/System.err(546): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
10-25 21:52:09.151: W/System.err(546): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
10-25 21:52:09.151: W/System.err(546): at dalvik.system.NativeStart.main(Native Method)
在 Android 4.x 版本中，SAX 解析不会从 Web 服务读取/获取数据。我应该在这里改变什么才能在 4.0 中工作。请帮我。