Create TableLayout programmatically

Question

I'm trying to create a TableLayout programatically. It just won't work. The same layout in an xml file works though. This is what I have:

public class MyTable extends TableLayout
{
    public MyTable(Context context) {
        super(context);

        setLayoutParams(new TableLayout.LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT));
        TableRow row = new TableRow(context);
        row.setLayoutParams(new TableRow.LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT));

        Button b = new Button(getContext());
        b.setText("hello");
        b.setLayoutParams(new LayoutParams(TableRow.LayoutParams.FILL_PARENT, TableRow.LayoutParams.WRAP_CONTENT));
        row.addView(b); 
        addView(row)
    }
}

...

// In main activity:
MyTable table = new MyTable(this);
mainLayout.addView(table);

When I run this, I don't get a crash, but nothing appears. If I get rid of the TableRow instance, at least the button does appear as a direct child of the TableLayout. What am I doing wrong?

score 42 · Answer 1 · edited Nov 09 '16 at 20:09

42

Just to make the answer more clear:

TableLayout.LayoutParams tableParams = new TableLayout.LayoutParams(TableLayout.LayoutParams.WRAP_CONTENT, TableLayout.LayoutParams.WRAP_CONTENT);
TableRow.LayoutParams rowParams = new TableRow.LayoutParams(TableRow.LayoutParams.WRAP_CONTENT, TableRow.LayoutParams.WRAP_CONTENT);

TableLayout tableLayout = new TableLayout(context);
tableLayout.setLayoutParams(new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT));// assuming the parent view is a LinearLayout

TableRow tableRow = new TableRow(context);
tableRow.setLayoutParams(tableParams);// TableLayout is the parent view

TextView textView = new TextView(context);
textView.setLayoutParams(rowParams);// TableRow is the parent view

tableRow.addView(textView);

Explanation
When you call setLayoutParams, you are supposed to pass the LayoutParams of the parent view

edited Nov 09 '16 at 20:09

ericn

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answered Dec 21 '12 at 10:52

Grigori A.

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Shouldn't it be tableRow.setLayoutParams(rowParams) ? – Leon Nov 09 '15 at 11:18
The life saver award goes to @Gigori A. and mark. Gigori A. for this answer and mark for his own answer. – Muneeb Mirza May 14 '16 at 10:48
Great and helpful solution. As a side note, you should add the row to the table before you add the textview to the row. tableLayout.addView(tableRow); – The_Martian Oct 20 '16 at 03:58
3

Spent an hour trying to figure out what I was doing wrong - turns out in your code you missed adding `tableRow` to the `tableLayout`: `tableLayout.addView(tableRow);` – Starwave May 08 '17 at 09:37
@The_Martian. actually, that's not mandatory. it also works first filling the row and then adding the latter to the table. In my strict opinion, that is more intuitive. – albaspazio May 24 '22 at 09:13

score 6 · Answer 2 · answered Oct 07 '09 at 01:28

6

It turns out I needed to specify TableRowLayout, TableLayout etc for the layout params, otherwise the table just won't show!

answered Oct 07 '09 at 01:28

mark

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Can you post your code solution? It looks like you are already doing that above. – Atma Aug 29 '11 at 21:19
4

Thank you! @Atma TableRows should use TableLayout.LayoutParams and views inside the TableRows should use TableRow.LayoutParams. :) – Brayden May 15 '12 at 15:03
Horrible that you need to explicitly do this, but it worked for me, thanks! – Geert Weening Mar 18 '13 at 19:01
Thank you @Brayden! That was the small detail I missed in my subclass of TableLayout that automatically had all TableLayout.LayoutParams and not TableRow.LayoutParams! – Anonsage Oct 08 '14 at 18:02

score 1 · Answer 3 · edited Jun 21 '12 at 15:51

1

For me, to get mine I had to call addContentView().

edited Jun 21 '12 at 15:51

Korhan Ozturk

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answered Apr 14 '12 at 04:51

John Moses

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score 1 · Answer 4 · edited May 23 '17 at 11:46

1

A good solution is to inflate layout files for each instance of row you want to create. See this post : How to duplicate Views to populate lists and tables?

edited May 23 '17 at 11:46

Community

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answered Jan 11 '14 at 06:39

clotilde

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score 0 · Answer 5 · answered Nov 09 '16 at 06:46

Your problem is at this line:

b.setLayoutParams(new LayoutParams(TableRow.LayoutParams.FILL_PARENT, TableRow.LayoutParams.WRAP_CONTENT));

You need to change LayoutParams to TableRow.LayoutParams:

b.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.FILL_PARENT, TableRow.LayoutParams.WRAP_CONTENT));

Create TableLayout programmatically

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