Kill thread in Android execution

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Kill thread in Android execution

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#1 by (1 votes)

1

I have this method where when you press the back button of the phone kills a thread that is running in the activity that you want to back out.

Class that calls I have initialized the thread:

//Declaras una variable tipo Thread
public Thread HiloConsumo;

// Se crea el hilo
HiloConsumo = new HiloConsumidor("INTC")                
HiloConsumo.setName("HiloConsumidor");
HiloConsumo.start();

// Metodo que al pulsar el boton de retroceder vuelve al Main y mata el HiloConsumidor
public void onBackPressed() {
    if (HiloConsumo != null)//valida si existe instancia de Thread.
    {
        HiloConsumo.interrupt();  //Interrumpe su ejecución.
        super.onBackPressed();
    }
}

HiloConsumidor:

public class HiloConsumidor extends Thread {

String codigo;

public HiloConsumidor(String codigo) {
    this.codigo = codigo;
}

@Override
public void run() {

    Stock stock = null;

    while (!HiloConsumo.isInterrupted()) {
        try {
            stock = YahooFinance.get(codigo);

            Thread.sleep(10000);

        } catch (InterruptedException e) {
            this.interrupt();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}
}

But when leaving and returning to the previous activity, which is the main thread continues to make a series of requests to an API without stopping. Inside the thread I have an infinite blucle I comment it but I think it's because of that

android hilos

asked by Eduardo 28.05.2017 в 20:19

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1 answer

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score 1 · Accepted Answer

If you use a while loop within the thread the isInterrupted() method passes as a condition, it will check if you have interrupted the thread to stop the execution.

HiloConsumo = new Thread() {
        @Override
        public void run() {
            while (!HiloConsumo.isInterrupted()) {
                //Tu codigo
            }
        }
    };
HiloConsumo.start();

EDIT:

Based on the new code you provide, you just use this instead of HiloConsumo since the class itself (referenced as this) extends from thread . I also advise that you remove if the super.onBackPressed(); for the "back" button to run correctly if at some point you do not start the thread.

Class that calls I have initialized the thread:

//Declaras una variable tipo Thread
 public Thread HiloConsumo;

// Se crea el hilo
 HiloConsumo = new HiloConsumidor("INTC");                
 HiloConsumo.setName("HiloConsumidor");
 HiloConsumo.start();

// Metodo que al pulsar el boton de retroceder vuelve al Main y mata el HiloConsumidor
 public void onBackPressed() {
    if (HiloConsumo != null)//valida si existe instancia de Thread.
    {
        HiloConsumo.interrupt();  //Interrumpe su ejecución.
    }
    super.onBackPressed();
}

HiloConsumidor:

public class HiloConsumidor extends Thread {

 String codigo;

 public HiloConsumidor(String codigo) {
    this.codigo = codigo;
}

@Override
 public void run() {

    Stock stock = null;

    while (!this.isInterrupted()) {
        try {
            stock = YahooFinance.get(codigo);

            Thread.sleep(10000);

        } catch (InterruptedException e) {
            this.interrupt();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}
}