Question

I come from an action script back ground and i am baffled by how to use arrays in java.

In my main activity i created an empty array called mIcons like so

private Array mIcons;

Now i want to set the value of that array by using a method from my DataBaseHelper class which looks like this:

public Array getHomeScreenIcons() {

        Array iconList;

        // Select All Query
        String selectQuery = "SELECT  * FROM " + homeIcons;

        SQLiteDatabase db = this.getWritableDatabase();
        Cursor cursor = db.rawQuery(selectQuery, null);

        // looping through all rows and adding to list
        if (cursor.moveToFirst()) {
            do {

iconList.push(Integer.parseInt(cursor.getString(0)));

            } while (cursor.moveToNext());
        }
        Log.v(TAG, "List Created"); 
        // return contact list

}

that bold line jumping out of the code is the problem so far.. how do i PUSH to my array

Then later i will want to run a for loop for the array from my main activity using.length

Answer 1

Use an ArrayList paramaterized to any type you want

ArrayList<Integer> iconList = new ArrayList<Integer>();

add with

iconList.add(Integer.parseInt(cursor.getString(0)));

Iterate with

for (int i: iconList)
{
    // i is your entire array starting at index 0
}

or

for (int i=0; i< iconList.size(), i++)
{

}