Problems with changing screen & alert message. Bug?

Question

Hallo everybody,
I have very strange problem.
I'm using gauge in independent screen while mobile phone is connecting to server. If it cannot connect becouse of any reason (bad password, etc), it should jump to main menu and display Alert with error message:
public void catchError(String error_message){
        display.setCurrent(mainMenu);
        currentMenu = MAIN_MENU;
        Alert alert = new Alert("ERROR!", error_message, null,  AlertType.WARNING);
        alert.setTimeout(Alert.FOREVER);
        display.setCurrent(alert);
}So with this code, it show mainMenu for a very short while (about 1/10 s), than displays alert. But when I dismiss the alert message, it jumps back to "Gauge_screen"!
I think it put screen to some buffer, but when I change display so fast, it cannot complete it sucesfully. Only solution of this problem that I found is very stupid and I cannot use it with clear mind:
public void catchError(String error_message){
        display.setCurrent(mainMenu);
        currentMenu = MAIN_MENU;
        int i = 0;
        while (i<10000){
            i++;
        Alert alert = new Alert("ERROR!", error_message, null,  AlertType.WARNING);
        alert.setTimeout(Alert.FOREVER);
        display.setCurrent(alert);
}Does someone saw and solve this problem before? What do you think about it?
Thanks
petosh

Answer 1

It's probably because setCurrent() is not something that happens instantaneously. So after setCurrent() when you put the alert on the display still hasn't changed so it remembers that it has to return to the gauge screen. You can use setCurrent(Alert a, Displayable next) to set the alert with the menu as the next screen.
shmoove