title: Android TableLayout remove padding
body: <p>What I'm trying to do is to remove every padding and margin from a <code>TableLayout</code>, and display the children buttons tiled.</p>
  
  <p>This is the <code>activity_main.xml</code> code</p>
  
  <pre><code>&lt;TableLayout xmlns:android="http://schemas.android.com/apk/res/android"
      xmlns:tools="http://schemas.android.com/tools"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:paddingLeft="@dimen/activity_horizontal_margin"
      android:paddingRight="@dimen/activity_horizontal_margin"
      android:paddingTop="@dimen/activity_vertical_margin"
      android:paddingBottom="@dimen/activity_vertical_margin"
      tools:context=".Main"
      android:orientation="horizontal"
      android:baselineAligned="false"&gt;
  
      &lt;TableRow
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"&gt;
  
          &lt;Button
              android:layout_width="wrap_content"
              android:layout_height="wrap_content"
              android:text="New Button"
              android:id="@+id/button1" /&gt;
  
          &lt;Button
              android:layout_width="wrap_content"
              android:layout_height="wrap_content"
              android:text="New Button"
              android:id="@+id/button4" /&gt;
      &lt;/TableRow&gt;
  
      &lt;TableRow
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"&gt;
  
          &lt;Button
              android:layout_width="wrap_content"
              android:layout_height="wrap_content"
              android:text="New Button"
              android:id="@+id/button2" /&gt;
  
          &lt;Button
              android:layout_width="wrap_content"
              android:layout_height="wrap_content"
              android:text="New Button"
              android:id="@+id/button3" /&gt;
      &lt;/TableRow&gt;
  
  &lt;/TableLayout&gt;
  </code></pre>
  
  <p>All the paddings are set to 0.</p>
  
  <p>This is what I get:</p>
  
  <p><img src="https://i.stack.imgur.com/VbKIw.jpg" alt=""></p>
  
  <p>And this is what I'm trying to get:</p>
  
  <p><img src="https://i.stack.imgur.com/3JaOT.jpg" alt=""></p>