CODEWITHSUNDEEP
javaandroidmultithreading
Deidara
Deidara

Reputation: 677

Android How to handle Multiple Runnable objects at the same time

I was trying to create multiple queues of tasks and execute them at the same time but with different delay time. Basically, at first I only have one runnable object

private final Runnable myQueue = new Runnable() {
public void run() {

    if (service != null && service.isRunning() && service.queueEmpty()) {
        queueTasks();
    }
    // run again in period defined in preferences
    new Handler().postDelayed(myQueue,getUpdatePeriod(prefs));
}

};

private void StartWExecute() {new Handler().post(myQueue);}

I want to improve my code so that there will be more than one queue, and all queues start executing at the same time, but each queue may have different updatePeriod depending on the task in it. In this way I can sort tasks into queues and manually control the update speed. How do I achieve this?

Thanks.

Upvotes: 4

Views: 4410

Answers (1)

Artur
Artur

Reputation: 390

You need use a MessageQueue:

1.Declare a Handler: Handler mWorkerHandler;
2.Create a Looper: 

Thread t = new Thread() {
            @Override
            public void run() {
                Looper.prepare();
                mWorkerHandler = new Handler() {
                    @Override
                    public void handleMessage(Message msg) {
                        Log.d(TAG, "handleMessage - what = " + msg.what);
                    }
                };
                Looper.loop();
            }
        };
        t.start();

3.Now you can send any number messages and perform operations according to message content:

mWorkerHandler.sendEmptyMessageDelayed(1, 2000);
mWorkerHandler.sendEmptyMessage(2);

Upvotes: 4

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