Trapped at "Is it OK to use Air time?", HELP!
I finished a MIDlet program but I was stooped at the "Is it OK to use Air time?" warning even I clicked 'Yes'. However, when I run this program at the server machine, the warning doesn't show up.
What's the problem indeed? Can I disable this warning?
following is my codes:
import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;
import javax.microedition.io.*;
import java.io.*;
* An example MIDlet with simple "Hello" text and an Exit command.
* Refer to the startApp, pauseApp, and destroyApp
* methods so see how each handles the requested transition.
* @author Ken_2
* @version
public class GetNpost extends MIDlet implements CommandListener {
private Display display; // The display for this MIDlet
private Form fmMain;
private Alert alError;
private Command cmGET;
private Command cmPOST;
private Command cmExit; // The exit command
private TextField tfAcct;
private TextField tfPwd;
private StringItem siBalance;
private String errorMsg = null;
public GetNpost() {
display = Display.getDisplay(this);
//Create Command
cmGET = new Command ("GET", Command.SCREEN, 2);
cmPOST = new Command ("POST", Command.SCREEN, 3);
cmExit = new Command("Exit", Command.SCREEN, 1);
// Textfields
tfAcct = new TextField("Account:", "", 5, TextField.NUMERIC);
tfPwd = new TextField("Password:", "", 10, TextField.ANY | TextField.PASSWORD);
//Balance string item
siBalance = new StringItem("Balance: $","");
// Create Form, add commands & Components, listen for events
fmMain = new Form("Account Information");
fmMain.addCommand(cmExit);
fmMain.addCommand(cmGET);
fmMain.addCommand(cmPOST);
fmMain.append(tfAcct);
fmMain.append(tfPwd);
fmMain.append(siBalance);
fmMain.setCommandListener(this);
* Start up the Hello MIDlet by creating the TextBox and associating
* the exit command and listener.
public void startApp() {
display.setCurrent(fmMain);
* Pause is a no-op since there are no background activities or
* record stores that need to be closed.
public void pauseApp() {
* Destroy must cleanup everything not handled by the garbage collector.
* In this case there is nothing to cleanup.
public void destroyApp(boolean unconditional) {
* Respond to commands, including exit
* On the exit command, cleanup and notify that the MIDlet has been destroyed.
public void commandAction(Command c, Displayable s) {
if (c == cmGET || c == cmPOST) {
try
if (c == cmGET)
lookupBalance_withGET();
else
lookupBalance_withPOST();
catch (Exception e)
System.err.println("Msg: " + e.toString());
else if (c == cmExit)
destroyApp(false);
notifyDestroyed();
* Access servlet using GET
private void lookupBalance_withGET() throws IOException
HttpConnection http = null;
InputStream iStrm = null;
boolean ret = false;
// Data is passed at the end of url for GET
String url = "http://ismt.no-ip.com/servlet/DRMfypGroup2.GetNpostServlet" + "?" + "account=" + tfAcct.getString() + "&" + "password=" + tfPwd.getString();
try
http = (HttpConnection) Connector.open(url);
// Client Request
// 1) Send request method
http.setRequestMethod(HttpConnection.GET);
// 2) Send header information - none
// 3) Send boday/data - data is at the end of URL
// Server Response
iStrm = http.openInputStream();
// Three steps are processed in this method call
ret = processServerResponse( http, iStrm);
finally
// Clean up
if (iStrm != null)
iStrm.close();
if (http != null)
http.close();
// Process request failed, show alert
if (ret == false)
showAlert(errorMsg);
* Access servlet using POST
private void lookupBalance_withPOST() throws IOException
HttpConnection http = null;
OutputStream oStrm = null;
InputStream iStrm = null;
boolean ret = false;
// Data is passed at the end of url for GET
String url = "http://ismt.no-ip.com/servlet/DRMfypGroup2.GetNpostServlet" + "?" + "account=" + tfAcct.getString() + "&" + "password=" + tfPwd.getString();
try
http = (HttpConnection) Connector.open(url);
oStrm = http.openOutputStream();
// Client Request
// 1) Send request method
http.setRequestMethod(HttpConnection.POST);
// 2) Send header information. Required for POST to work!
http.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
// If you experience connectoin/IO problems, try removing the comment from the following line
//http.serRequestProperty("Connection", "clsoe");
// 3) Send boday/data
// Write account number
byte data[] = ("account=" + tfAcct.getString()).getBytes();
oStrm.write(data);
oStrm.flush();
// Server Response
iStrm = http.openInputStream();
// Three steps are processed in this method call
ret = processServerResponse(http, iStrm);
finally
// Clean up
if (iStrm != null)
iStrm.close();
if (http != null)
http.close();
// Process request failed, show alert
if (ret == false)
showAlert(errorMsg);
* Process a response from a server
private boolean processServerResponse(HttpConnection http, InputStream iStrm) throws IOException
// Reset error message
errorMsg = null;
// 1) Get Statis Line
if (http.getResponseCode() == HttpConnection.HTTP_OK)
// 2) Get header information - none
// 3) Get body (data)
int length = (int) http.getLength();
String str;
if (length != -1)
byte servletData[] = new byte[length];
iStrm.read(servletData);
str = new String(servletData);
else // Length not available...
ByteArrayOutputStream bStrm = new ByteArrayOutputStream();
int ch;
while ( (ch =iStrm.read()) != -1)
bStrm.write(ch);
str = new String (bStrm.toByteArray());
bStrm.close();
//Update the string item on the display
siBalance.setText(str);
return true;
else
// Use message from the servlet
errorMsg = new String ( http.getResponseMessage() );
return false;
* Show an alert
private void showAlert(String msg)
// Create Alert, use message returned from servlet
alError = new Alert("Error", msg, null, AlertType.ERROR);
// Set Alert to type model
alError.setTimeout(Alert.FOREVER);
// Display the Alert. Once dismissed, display the form
display.setCurrent( alError, fmMain);
}
Ooops - adding to my own reply: this is valid for latest Sun Java studio Mobility (available at http://developers.sun.com/prodtech/javatools/jsmobility/index.html). Older versions have different wtk directory - search for _policy.txt in the install directory.
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