Android - Dynamic Table Rows NullPointerException

Question

I am making an android application, which creates a dynamic interface, according to a string read from your preferences:

ScrollView sv = new ScrollView(this);
    LinearLayout ll = new LinearLayout(this);
    ll.setOrientation(LinearLayout.VERTICAL);

    TableLayout tl = new TableLayout(this);
    TableRow[] tr = null;

    SharedPreferences SP = PreferenceManager.getDefaultSharedPreferences(getBaseContext());
    String Favs = SP.getString("Favs", "None");
    String[] Genveje;
    if (!Favs.equals("None"))
    {
        Genveje = Favs.split(";");
        tr = new TableRow[Genveje.length];
        for (int i = 0; i < Genveje.length; i++)
        {
            String BtnName = Genveje[i].split("@")[0];
            String BtnPath = Genveje[i].split("@")[1];
            Button btn = new Button(this);

            btn.setText(BtnName);
            btn.setTag(BtnPath);
            btn.setOnClickListener(this);
            btn.setOnLongClickListener(this);


            tr[i].addView(btn);

                    .........
        }

The problem is: when i try to do ANYTHING with tr[i] i get a NullPointerException, and i have no clue why.

Anyone with a suggestion?

Rasel · Accepted Answer · 2012-07-31 08:05:31Z

2

tr[i]=new TableRow(this);
tr[i].addView(btn);

answered Jul 31, 2012 at 8:05

Rasel

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