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Editorial Team
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Asked: 2026-06-03T13:09:03+00:00

bit of a rough time getting this to work and its an understanding piece

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bit of a rough time getting this to work and its an understanding piece on my end…

If i have a spinner item that contains the text “The [item] is [color]” and upon selecting this, I would like it to populate a… tablerow or something like that(or just a relativelayout)… with buttons and there would be two buttons, [item] and [color], stacked one on the other.

public void onItemSelected(AdapterView<?> parentview, View arg1, int position, long id) 
{

    final TableLayout t1 = (TableLayout)findViewById(R.id.button_items);
    final TableRow tr = new TableRow(t1.getContext());
ArrayList<String> words = Create_ArrayList(R.raw.titles);

// Create_ArrayList just parses known words like the [item] and [color] items and puts them into an array… for enumeration purposes later on.

String sentence = (String) spin.getSelectedItem();

    if(sentence.contains("[item]"))
    {
        String line = words.get(1);
        ArrayList<String> x = getParts(line);

//arraylist should just be [item] and [color] at this point…

        Toast.makeText(getBaseContext(), Integer.toString(x.size()), Toast.LENGTH_SHORT).show();
    for(int i = 0; i<x.size(); i++)
    {
              Toast.makeText(getBaseContext(), x.get(i), Toast.LENGTH_LONG).show();

            Button btn = new Button(tr.getContext());
       btn.setText(x.get(i));
       btn.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT));
       tr.addView(btn);
       t1.addView(tr, new TableLayout.LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT));
    }   
}
}

but i keep getting…

java.lang.IllegalStateException: The specified child already has a parent. You must call removeView() on the child's parent first

and the buttons dont show up… app just crashes… into a mountain.

help is much appreciated… Thanks all!

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1 Answer

  1. Editorial Team

    In the first code block

    final TableLayout t1 = (TableLayout)findViewById(R.id.button_items);

    you already have the view of t1, but again in the third code block you are adding the view

    tr.addView(btn);
       t1.addView(tr, new TableLayout.LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT));

    that is the reason for your exception.

    When a View is allready used (e.g., you got it with findViewById, don’t use addView on it). When you want to add a view, use addView with a NEW view. You can add several of these new views to one view, but you cannot add that one view multiple times.

    This is what i found in some other post

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