How to programmatically add cells (Views) and rows in TableLayout

 Following are the steps for programmatically adding rows in a TableLayout:

1. Manually include a TableLayout in your main.xml file with an id, say, "TableLayout01". Obtain a reference to the TableLayout as:
       
    table = (TableLayout) findViewById(R.id.TableLayout01); 

Note: Ensure to define the variable "table" outside onCreate() inside the class as: TableLayout table;


 2. Create a new TableRow:

  TableRow row = new TableRow(this);

Note: In this example, only one row is being added for illustration purpose. You can use a for loop to create several rows.

3.  Write this loop inside onCreate or other suitable method of your source file to add, say, 10 cells containing TextViews in the row:

        for(int i=0; i<10; i++)
        {
            // create a new TextView        
            TextView t = new TextView(this);        
            t.setText(i+"."); //Set to any meaningful text
            t.setBackgroundColor(Color.DKGRAY);
            row.addView(t); //Attach TextView to its parent (row)

            //Warning: do not call t.setLayoutParams(params)

            //before attaching the view to the parent, 

            //else null reference will result

            //Use the following lines only if special formatting
            //as shown below is needed. If not, skip.

            //
            TableRow.LayoutParams params = 

                 (TableRow.LayoutParams)t.getLayoutParams();
            params.column= i; //place at ith columns.

            //Skip above line if being placed side by side
            params.span = 1; //span these many columns, 

            //i.e merge these many cells. Skip if not needed
            params.setMargins(2,2,2,2); //To "draw" margins

            //around (outside) the TextView, skip if not needed
            params.width = TableRow.LayoutParams.FILL_PARENT;

            //Set width as needed (Important: this and the

            //.height below is for layout of "text" inside 

            //the TextView, not for layout of TextView' by its

            //parent)
            params.height = TableRow.LayoutParams.WRAP_CONTENT;
            t.setPadding(2, 2, 2, 2); 

            //Skip padding (space around text) above if not

            //needed
            t.setLayoutParams(params); // causes layout update. 

            //Skip above if no special setting is needed
                 
        } //...Here our row is all complete with 10 TextViews
       
        //Next add the new row to the table
        table.addView(row,
                new TableLayout.LayoutParams
                (LayoutParams.WRAP_CONTENT, 

                LayoutParams.WRAP_CONTENT));