CODEWITHSUNDEEP
androidandroid-layoutandroid-widgetspinnerandroid-arrayadapter
Rafay
Rafay

Reputation: 6188

Returning a String from ArrayAdapter

I have created a Spinner and ArrayAdapter as follows:

Spinner spinner1 = (Spinner) findViewById(R.id.spinner1);
final ArrayAdapter<CharSequence> adapter1 = ArrayAdapter.createFromResource(
            this, R.array.units_array1, android.R.layout.simple_spinner_item);
adapter1.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
spinner1.setAdapter(adapter1);

The units_array1 is a string array declared in a xml file like this:

<string-array name="units_array1">
    <item>Centimeters</item>
    <item>Meters</item>
    <item>Kilometers</item>
    <item>Inches</item>
    <item>Foots</item>
    <item>Miles</item>
</string-array>

Now I want to implement some If-ELSE conditions that are based on the elements in string-array. I Have researched a lot on the internet for this but haven't found out any solution that works. Please help me in implementing a function that returns the individual elements from the string-array using the adapter.

Upvotes: 0

Views: 3595

Answers (4)

gwvatieri
gwvatieri

Reputation: 5183

spinner1.setOnItemSelectedListener(new OnItemSelectedListener() {
    @Override
    public void onItemSelected(AdapterView<?> parent, View v, int position, long id3) {
        final String scale = adapter1.getItem(position);
        // scale is gonna be "Centimeters" or "Meters", etc...
        if (scale.equals("Centimeters")) {
            // do something
        } else if (scale.equals("Meters")) {
            // do something else 
        }
    }

    @Override
    public void onNothingSelected(AdapterView<?> parent) {
    }

});

Upvotes: 2

Vit Khudenko
Vit Khudenko

Reputation: 28418

You need to set a OnItemSelectedListener to your spinner. Then in the listener you'll be notified about the selection event. Check the official sample on this: Spinner.

Upvotes: 1

devunwired
devunwired

Reputation: 63303

ArrayAdapter.getItem(position), where position is the index into the array. If you want to get the currently selected item in your Spinner, use Spinner.getSelectedItemPosition() as the parameter to getItem().

This will return a CharSequence because of you your adapter is typed. If you want that values to return as Strings, redefined your adapter as ArrayAdapter<String>

HTH!

Upvotes: 3

FunkTheMonk
FunkTheMonk

Reputation: 10938

ArrayAdapter has getItem(int position), which (if you know the position) will get you the String. ArrayAdapter also has getCount(), so you can write a simple for loop to get each element if you don't know its position.

Upvotes: 1

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