Blackberry - Running Background Application

问题

Good afternoon. I'm starting programming in java and blackberry. I am developing an application with three windows, which I will show basic information about the device, these windows are already done and working. I need to create a process running in the background, this process will run every 10 minutes. As I make this process run in the background and is working to close the windows?

This is the kind that runs the application:

    public class InfoBerry extends UiApplication{
    public vtnprincipal vtnprincipal;
    public vtnbateria vtnbateria;
    public vtnestado vtnestado ;
    public vtnacerca vtnacerca;

    public InfoBerry(){

    }

    public static void main(String[] args) {
            InfoBerry theApp = new InfoBerry();
            theApp.mostrarpantalla();
    }
    public void mostrarpantalla(){

        vtnprincipal = new vtnprincipal(this);
        vtnbateria = new vtnbateria(this);
        vtnestado = new vtnestado(this);
        vtnacerca = new vtnacerca(this);
        // Inicailizamos los componentes de la pantalla principal
        vtnprincipal.incventana();
        // La pnemos en lo alto de la pila de pantallas

        pushScreen(this.vtnprincipal);
        }
}

And this is the class you need to run in the background. As I have to make the call to this class to run in the background?

class iconnoti extends MainScreen{
    //icono de la temperatura
    EncodedImage imgtem = 
            EncodedImage.getEncodedImageResource("icon_bateria_t.png");
    ApplicationIcon icontem = new ApplicationIcon(imgtem);
  //icono de la carga de la bateria
    EncodedImage imgcarga = 
            EncodedImage.getEncodedImageResource("icon_bateria.png");
    ApplicationIcon iconcarga = new ApplicationIcon(imgcarga);
    //icono de la memoria
    EncodedImage imgmemo = 
            EncodedImage.getEncodedImageResource("icon_memoria.png");
    ApplicationIcon iconmemo = new ApplicationIcon(imgmemo);
    ApplicationIcon mIcon = icontem;
    boolean act;
    public iconnoti() {


    }

    public void rotar_temperatura(){
        cron c1;
        actualizar_icono(icontem);
        actualizar_valor(DeviceInfo.getBatteryTemperature());

        c1 = new cron(2,10000);
        c1.start();


    }
    public void rotar_memoria(){
        cron c1;
        actualizar_icono(iconmemo);
        actualizar_valor(34);

        c1 = new cron(3,10000);
        c1.start();

    }
    public void rotar_nivel(){
        cron c1;
        actualizar_icono(iconcarga);
        actualizar_valor(DeviceInfo.getBatteryLevel());
        c1 = new cron(1,10000);
        c1.start();

    }

   public void iniciar_servicio() {
       try {

           ApplicationIndicatorRegistry reg = 
                    ApplicationIndicatorRegistry.getInstance();
                ApplicationIndicator Indicator = 
                    reg.register(mIcon, false, true);
                } catch (Exception e) {

        }
    }

    public  void parar_servicio() {
        try {
                ApplicationIndicatorRegistry reg = 
                    ApplicationIndicatorRegistry.getInstance();
                reg.unregister();
        } catch (Exception e) {
        }
    }

    void actualizar_valor(int value) {
        try {
                ApplicationIndicatorRegistry reg = 
                    ApplicationIndicatorRegistry.getInstance();
                ApplicationIndicator appIndicator = 
                    reg.getApplicationIndicator();
                appIndicator.setValue(value);
        } catch (Exception e) {
        }
    }

    void actualizar_icono(ApplicationIcon icon) {
        try {
                ApplicationIndicatorRegistry reg = 
                    ApplicationIndicatorRegistry.getInstance();
                ApplicationIndicator appIndicator = 
                    reg.getApplicationIndicator();
                appIndicator.setIcon(icon);
        } catch (Exception e) {
        }
    }
}

class cron extends Thread {
    //private ApplicationIcon icono;
    public int valor;
    private int tiempo;
    iconnoti icon = new iconnoti();

    public cron(int v, int t){
        valor = v;
        tiempo = t;
    }

    public void run() {
        try {
            sleep(tiempo);
        } catch (InterruptedException e) {  

        }
        if(valor == 1){
            icon.rotar_temperatura();
        }else if(valor == 2){
            icon.rotar_memoria();
        }else if(valor == 3){
            icon.rotar_nivel();
        }

    }           

}

Thanks for the help.

回答1:

Background Application is a kind of process, so there is no GUI at least on the beginning.

You should extend Application instead of UIApplication class

You should not push screen there, just move everything from iconnoti class to cron class and run it in Application constructor:

public class BerryInfoApp extends Application {
    public BerryInfoApp() {
            UpdateThread updateThread = new UpdateThread(10*60*1000);
            updateThread.run();
    }
    public static void main(String[] args) {
        (new BerryInfoApp()).enterEventDispatcher();
    }
}

class UpdateThread extends Thread {
EncodedImage imgtem = EncodedImage
        .getEncodedImageResource("icon_bateria_t.png");
ApplicationIcon icontem = new ApplicationIcon(imgtem);
EncodedImage imgcarga = EncodedImage
        .getEncodedImageResource("icon_bateria.png");
ApplicationIcon iconcarga = new ApplicationIcon(imgcarga);
EncodedImage imgmemo = EncodedImage
        .getEncodedImageResource("icon_memoria.png");
ApplicationIcon iconmemo = new ApplicationIcon(imgmemo);
ApplicationIcon mIcon = icontem;

static final int ACTION_NONE = 0;
static final int ACTION_BATTERY_TEMP = 1;
static final int ACTION_MEMORY = 2;
static final int ACTION_BATTERY_LEVEL = 3;
int mAction = ACTION_BATTERY_LEVEL;
long mPeriod;

public UpdateThread(int period) {
    mPeriod = period;
}

public void stop() {
    mAction = ACTION_NONE;
}

public void run() {
    iniciar_servicio();
    while (mAction != ACTION_NONE) {
        switch (mAction) {
        case ACTION_BATTERY_TEMP:
            rotar_temperatura();
            mAction = ACTION_MEMORY;
            break;
        case ACTION_MEMORY:
            rotar_memoria();
            mAction = ACTION_BATTERY_LEVEL;
            break;
        case ACTION_BATTERY_LEVEL:
            rotar_nivel();
            mAction = ACTION_BATTERY_TEMP;
            break;
        default:
            break;
        }
        try {
            sleep(mPeriod);
        } catch (InterruptedException e) {
        }
    }
    parar_servicio();
}

public void rotar_temperatura() {
    actualizar_icono(icontem);
    actualizar_valor(DeviceInfo.getBatteryTemperature());
}

public void rotar_memoria() {
    actualizar_icono(iconmemo);
    actualizar_valor(34);
}

public void rotar_nivel() {
    actualizar_icono(iconcarga);
    actualizar_valor(DeviceInfo.getBatteryLevel());
}

public void iniciar_servicio() {
    try {
        ApplicationIndicatorRegistry reg = ApplicationIndicatorRegistry
                .getInstance();
        ApplicationIndicator Indicator = reg.register(mIcon, false, true);
    } catch (Exception e) {
    }
}

public void parar_servicio() {
    try {
        ApplicationIndicatorRegistry reg = ApplicationIndicatorRegistry
                .getInstance();
        reg.unregister();
    } catch (Exception e) {
    }
}

void actualizar_valor(int value) {
    try {
        ApplicationIndicatorRegistry reg = ApplicationIndicatorRegistry
                .getInstance();
        ApplicationIndicator appIndicator = reg.getApplicationIndicator();
        appIndicator.setValue(value);
    } catch (Exception e) {
    }
}

void actualizar_icono(ApplicationIcon icon) {
    try {
        ApplicationIndicatorRegistry reg = ApplicationIndicatorRegistry
                .getInstance();
        ApplicationIndicator appIndicator = reg.getApplicationIndicator();
        appIndicator.setIcon(icon);
    } catch (Exception e) {
    }
}
}

来源：https://stackoverflow.com/questions/2768171/blackberry-running-background-application

标签

blackberry

process

background-application