CODEWITHSUNDEEP
androidandroid-alertdialog
Oreo
Oreo

Reputation: 2594

java.lang.ArrayIndexOutOfBoundsException: length=12; index=-1

I am using AlertDialog in my program, whenever i do tap on any of the item in Dialog, always getting:

java.lang.ArrayIndexOutOfBoundsException: length=12; index=-1

Here is my implementation :

      builder.setPositiveButton("OK", new DialogInterface.OnClickListener() {

      @Override
      public void onClick(DialogInterface dialog, int which) {

          Log.d("which::--", String.valueOf(which));

       });

Upvotes: 0

Views: 2573

Answers (2)

Oreo
Oreo

Reputation: 2594

Here is the simple solution to get index or position of tapped item:

int selectedPosition = ((AlertDialog)dialog).getListView().getCheckedItemPosition();

Upvotes: 1

Nicolas Mauti
Nicolas Mauti

Reputation: 546

According to the documentation, the "which" parameter indicates "The button that was clicked (e.g. BUTTON1) or the position of the item clicked."

Here you put your listener (DialogInterface.OnClickListener()) on your PositiveButton so "which" will always return BUTTON1 or BUTTON_POSITIVE (see here http://developer.android.com/reference/android/content/DialogInterface.html).

You must put your listener on your list using the function

setSingleChoiceItems (CharSequence[] items, int checkedItem, DialogInterface.OnClickListener listener) for example or setMultiChoiceItems (CharSequence[] items, boolean[] checkedItems, DialogInterface.OnMultiChoiceClickListener listener) if you want to allow multi-items selection.

Upvotes: 0

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