How to fix "array type expected found java.util.arraylist"?

Question

Given the function as below, AndroidStudio gives an error in the labeled line:

array type expected found java.util.arraylist

I also tried to use get instead of a direct referencing, but then Android Studio is telling me something that setItems cannot be resolved. The code is here:

protected void multiSelect(final ArrayList items) {
    AlertDialog.Builder builder = new AlertDialog.Builder(this);

    builder.setTitle("Selection")
            .setItems(items, new DialogInterface.OnClickListener() {
                public void onClick(DialogInterface dialog, int item) {
                    Log.i("Select", "Selected entry: " + items[item]); // error here
                }
            });

    builder.create();
}

Mohammed Aouf Zouag · Accepted Answer · 2015-11-11 20:14:58Z

28

Change

Log.i("Select", "Selected entry: " + items[item]);

to :

Log.i("Select", "Selected entry: " + items.get(item));

and change

protected void multiSelect(final ArrayList items)

to

protected void multiSelect(final ArrayList<String> items)

UPDATE:

the setItems method of the DialogBuilder expects an array, not an arrayList.

edited Nov 11, 2015 at 20:14

answered Nov 11, 2015 at 19:21

Mohammed Aouf Zouag

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6 Comments

Alex Over a year ago

I have trying to tell that I tried this without success.

Mohammed Aouf Zouag Over a year ago

One sec... ArrayList of what ?

Alex Over a year ago

The error message is: Cannot resolve method 'setItems(java.util.ArrayList, anonymous android.content.DialogInterface..OnClickListener')

Mohammed Aouf Zouag Over a year ago

You should specify the type of the objects that your arrayList will hold reference to, like this : "final ArrayList<int> items" , for the example

Alex Over a year ago

With both suggestions I get the error: "Cannot resolve symbol 'items'" ... on all three occurrances of the variable 'items'.

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