How to make a pause between an Alert and a plateformRequest ?

Question

Hello,
I' programming a class which realize a download from an URL called downloadURL. An overview of my code is :
public class SoundDownloader implements CommandListener{
             private Alert downloadAlert2;
             private String downloadURL;
                   private MIDlet midlet;
             public SoundDownloader(String downloadURL, MIDlet midlet){
               this.downloadURL = downloadURL;
                        this.midlet = midlet;
                   try {                       
               //download code using HttpConnection and openInputStream()                       
                   } catch (Exception e) {
                        downloadAlert2 = new Alert("Download error !");
                        downloadAlert2.setType(AlertType.ERROR);
                        downloadAlert2.setString("Download error : "+e.toString());
                        downloadAlert2.setTimeout(Alert.FOREVER);                      
                        display.setCurrent(downloadAlert2);//show the Alert  
                        downloadAlert2=null;
               //I'd like to stay here until the user dismisses the Alert     
                        this.midlet.platformRequest(downloadURL);
                        this.midlet.notifyDestroyed();
}When an exception is caught, I display an error alert and I'd like to make the user wait until he dismisses the alert before launching a download by the mobile browser (platformRequest).
I don't get this result now! The alert is displayed, but just after (without any delay), the platformRequest method is automatically launched!
Could someone help me please?
Thanks in advance!
/arkienou

Answer 1

I would try catch block code with [Alert.setCommandListener|http://java.sun.com/javame/reference/apis/jsr118/javax/microedition/lcdui/Alert.html#setCommandListener(javax.microedition.lcdui.CommandListener)], roughly like below:
  downloadAlert2 = new Alert("Download error !");
  downloadAlert2.setType(AlertType.ERROR);
  downloadAlert2.setString("Download error : "+e.toString())
  downloadAlert2.setTimeout(Alert.FOREVER);
  downloadAlert2.setCommandListener(new CommandListener() {
    public void commandAction(Command c, Displayable d) {
      if (c == Alert.DISMISS_COMMAND) {
        midlet.platformRequest(downloadURL);
        midlet.notifyDestroyed();
  display.setCurrent(downloadAlert2);//show the Alert  
}