Adding TableLayout and TableRow to LinearLayout doesn't show

I'm trying to programatically adding a TableRow to a LinearLayout, but it's not showing up. Here's the XML code:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://ift.tt/nIICcg"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" 
    android:id="@+id/linearLayout">


</LinearLayout>

And here's the Java code:

    LinearLayout linear = (LinearLayout) findViewById(R.id.linearLayout);
    Button btn = new Button(this);
    btn.setText("ASDF");
    btn.setLayoutParams(new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));
    linear.addView(btn);

    TableLayout table = new TableLayout(this);
    table.setLayoutParams(new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.MATCH_PARENT));
    TableRow row = new TableRow(this);
    row.setLayoutParams(new TableLayout.LayoutParams(TableLayout.LayoutParams.MATCH_PARENT, TableLayout.LayoutParams.MATCH_PARENT));

    Button btn2 = new Button(this);
    btn2.setText("Inside");
    btn2.setLayoutParams(new TableLayout.LayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.WRAP_CONTENT, TableRow.LayoutParams.WRAP_CONTENT, 1.0f)));

    row.addView(btn2);
    table.addView(row);
    linear.addView(table);

The Button with "ASDF" shows up every time, but btn2 with "Inside" never shows. Any help would be appreciated!