Android final variable is no variable?

Question

I have a void like this:

public static void checkStateSignal(final int counter) {
    for (int l = 0; l < counter; l += 10) {
        if (counter - l < 9) {

            Handler handler = new Handler();
            handler.postDelayed(new Runnable() {
                @Override
                public void run() {
                ArraySignal.LoggerStatus.get(counter) = separated[1];
                }
            },150);
        } 
    }
}

in which ArraySignal is a class and Loggerstatus is an Arraylist. I get an error on

ArraySignal.LoggerStatus.get(counter) = separated[1];

which is variable expected. So for some reason a final variable is not a variable and ArrayList.get doesn't want to get at a value position instead of a variable position which seems very illogical to me since you can get at a constant. Am i missing something? Also a solution for the problem would be very welcome.

score 1 · Accepted Answer · edited May 23 '17 at 12:31

1

This is because you are using the accesor .get(index) for the ArrayList and that return a value, you need to use the .add(index,elem) to add an element at the given position. Check this link to look around Add object to ArrayList at specified index

edited May 23 '17 at 12:31

Community

1
1

answered Apr 05 '16 at 10:03

crgarridos

8,758
3
49
61

What i'm trying to do is setting the string in that index to a certain value. not adding a new one seems kind of redundant to add and then remove the previous one – dec0yable Apr 05 '16 at 10:41
oh, apparently there's a set function which I can use to set that String. Didn't know that. Was searching in the wrong direction, Thank you. – dec0yable Apr 05 '16 at 10:54

score 0 · Answer 2 · answered Apr 05 '16 at 10:04

You can define a new class:

Class NewRunnable extends Runnable
{
   public int counter;
   public NewRunnable(int _counter)
   {
       counter = _counter;
       super();
   }
}

and then use that in your code like:

handler.postDelayed(new NewRunnable(counter) {
                @Override
                public void run() {
                String[] separated;
                ArraySignal.LoggerStatus.get(counter) = separated[1];
                }
            },150);

score 0 · Answer 3 · answered Apr 05 '16 at 10:05

0

ArraySignal.LoggerStatus.get(counter) = separated[1]

I think the issue is, you are trying to set value to a function

answered Apr 05 '16 at 10:05

Nitesh

3,868
1
20
26

Android final variable is no variable?

3 Answers3