BlackBerry - Can't foreground a running application - blackberry

Question

I have a UI application that is set to autorun on startup which spawns a few threads doing some work in the background. It has one screen that displays information about the work the background threads are doing.
class AppName extends UiApplication implements SystemListener2 {
private static AppName app;
public static void main(String[] args) {
app = new AppName();
if (ApplicationManager.getApplicationManager().inStartup()) {
app.addSystemListener(app);
} else {
app.initializeLater();
}
app.enterEventDispatcher();
}
public AppName() {
pushScreen(new InfoScreen());
requestBackground();
}
private void initialize() {
// Spawns some threads doing work in the background
}
private void initializeLater() {
invokeLater(new Runnable() {
public void run() {
initialize();
}
});
}
public void powerUp() {
removeSystemListener(this);
initialize();
}
}
When I run the app in the simulator it works fine. Upon startup everything runs and then when I click the icon the screen is foregrounded and displayed. This is the output from the simulator:
3:20:26.612: AM: Starting AppName
3:20:26.612: AM: AppName already running
3:20:26.612: AM: Foreground is requested: AppName(304)
3:20:26.628: AM: Foreground is set: AppName(304)
However, on the device the screen never displays. This is the device debugger output:
[0.0] Starting AppName
[0.0] AppName already running
As you can see the foreground request is never made. I confirmed this by overriding the UiApplication.activate() method and putting in a System.out message to see if it was being called but it's not getting called.
Does anyone have any idea why this is happening?

Answer 1

try using this
UiApplication.getUiApplication().invokeAndWait(new Runnable() {
public void run() {
UiApplication.getUiApplication().requestForeground();
});
}