How to create a Array of ArrayAdapter

Question

i want to create a array of ArrayAdapter and array of List, to use in some spinners.

This is my script:

    String[] items = new String[]{"Select","A","B", "C", "D"};
    ArrayAdapter<String>[] adaptador;
    List<String>[] List;

.....
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_inventario);
        restart_spinner(11);
    }

public void restart_spinner(int sp)
{
List[sp] = new ArrayList<>(Arrays.asList(items2));
adaptador[sp] = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, List[sp]);
spinner = (Spinner) findViewById(getResources().getIdentifier("p"+sp, "id", getPackageName()));
spinner.setAdapter(adaptador[sp]);
}

but i get a java.lang.NullPointerException in this line List[sp] = new ArrayList<>(Arrays.asList(items2));

How i can do to fix that?

What is `items2 ` ? – ρяσѕρєя K Jul 04 '16 at 05:13 — ρяσѕρєя K, Jul 04 '16 at 05:13
Where is `List` initialized? – shmosel Jul 04 '16 at 05:14 — shmosel, Jul 04 '16 at 05:14

score 0 · Answer 1 · answered Jul 04 '16 at 06:02

0

I fixed my problem, I changed my script to:

 ArrayAdapter<String>[] adaptador= new ArrayAdapter[50];
 List<String>[] List= new List[50];

.........

answered Jul 04 '16 at 06:02

luis urdaneta

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How to create a Array of ArrayAdapter

1 Answers1