CODEWITHSUNDEEP
javaandroidspinner
cshadowstar
cshadowstar

Reputation: 303

Getting a value from a Spinner selection

I want a spinner to return an value to me once the user has selected an item.

I know I could use a button and then use spinner.getSelectedItemPosition() in the OnClick(), but I want the value to be returned as soon as the user has selected amongst the spinner choices. Thus, I had thought to use an OnItemSelectedListener.

int valueINeed;
subGoalSpinner.setOnItemSelectedListener(new OnItemSelectedListener() {
        @Override
        public void onItemSelected(AdapterView<?> arg0, View arg1,
                int arg2, long arg3) {
            int index = arg0.getSelectedItemPosition();
            //I now want to somehow get the value of the index for use outside of this code block
}

I can obviously not use a straight return statement as the method has a void return type. Furthermore, I cannot set valueINeed = index unless I make valueINeed final. I am not sure I want to do that as what happens if the user changes his/her mind and I need to reassign the value?

Thanks!

Upvotes: 1

Views: 816

Answers (2)

crocboy
crocboy

Reputation: 2897

TronicZomB's answer is correct, but you won't be notified when the global variable changes. If you need to do something with valueINeed as soon as it's changed in the Spinner, you have two options:

  1. Take the code that uses valueINeed and put it all inside of the onItemSelected function
  2. Create a seperate function that you call from within the onItemSelected function.

Example of #2:

subGoalSpinner.setOnItemSelectedListener(new OnItemSelectedListener() 
{
    @Override
    public void onItemSelected(AdapterView<?> arg0, View arg1, int arg2, long arg3) 
    {
        valueINeed = subGoalSpinner.getSelectedItemPosition();
        updateView(valueINeed);
    }
}

In this case, updateView is a function that takes in valueINeed as a parameter and does something with it (like updating a TextView).

Upvotes: 0

TronicZomB
TronicZomB

Reputation: 8747

Just declare the variable int valueINeed; as a global variable. Than you can use the following:

subGoalSpinner.setOnItemSelectedListener(new OnItemSelectedListener() {
    @Override
    public void onItemSelected(AdapterView<?> arg0, View arg1,
            int arg2, long arg3) {
        valueINeed = subGoalSpinner.getSelectedItemPosition();
        //I now want to somehow get the value of the index for use outside of this code block
}

Upvotes: 1

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