postDelayed handler with loop

Question

I did some research and tried some code including the code below from Android postDelayed Handler Inside a For Loop?.

final Handler handler = new Handler(); 


    int count = 0;
    final Runnable runnable = new Runnable() {
        public void run() { 

            // need to do tasks on the UI thread 
            Log.d(TAG, "runn test");


            if (count++ < 5)
                handler.postDelayed(this, 5000);

        } 
    }; 

    // trigger first time 
    handler.post(runnable);

But the count variable will show an error because it is accessed within the inner class. How can I solve the problem?

score 0 · Accepted Answer · edited May 17 '19 at 08:40

0

Variable 'count' is accessed from within inner class, needs to be final or effectively final

you need to Transform count into final One element array

final Handler handler = new Handler();

final int[] count = {0};        //<--changed here
final Runnable runnable = new Runnable() {
    public void run() {

        // need to do tasks on the UI thread
        Log.d(TAG, "runn test");


        if (count[0]++ < 5)     //<--changed here
            handler.postDelayed(this, 5000);

    }
};

// trigger first time
handler.post(runnable);

edited May 17 '19 at 08:40

Morteza Jalambadani

2,190
6
21
35

answered May 17 '19 at 07:05

Nikunj Paradva

15,332
5
54
65

Have you got your answer? – Nikunj Paradva May 17 '19 at 07:14
Is it normal to do like this? Or should avoid if possible? – unityx1 May 17 '19 at 07:18
this is necessary if you want to access that variable – Nikunj Paradva May 17 '19 at 07:19

postDelayed handler with loop

1 Answers1