Android: int which in DialogInterface.OnClickListener() is -1

Question

I don't understand why this is happening. I have the following code: ``` AlertDialog.Builder builder = new AlertDialog.Builder(SettingsActivityNew.this); builder.setTitle("Title"); builder.setSingleChoiceItems(R.array.example_arrays, 1, null); builder.setNegativeButton("Cancel", null); builder.setPositiveButton("OK", new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int which) { Toast.makeText(SettingsActivityNew.this, "which: " + which, Toast.LENGTH_LONG).show(); } }); builder.show(); ``` For some strange reason, the int which, keeps giving me -1. Why is this happening?

Accepted Answer

From the doc :

```
Parameters
dialog  The dialog that received the click.
which   The button that was clicked (e.g. BUTTON1) or the position of the item clicked.
```

BUTTON_POSITIVE :

```
public static final int BUTTON_POSITIVE

Added in API level 3
The identifier for the positive button.

Constant Value: -1 (0xffffffff)
```

So that's not strange but totally normal. You get -1 each time because you clicked on the `positiveButton` of your dialog :)

Android: int which in DialogInterface.OnClickListener() is -1

Solution

Problem