Add Buttons at the bottom of Android Layout xml file

If you want to add Buttons to the bottom of your android layout XML file you can achieve it using attribute layout_gravity on LinearLayout or TableRow layout.

Below your Parent Layout tag add a LinearLayout or TableRow with attribute android:layout_gravity="bottom". This will move this sub-view holding buttons or other views at the bottom.

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="com.example.drawing.Sample"
    tools:ignore="HardcodedText" >

    <TableRow
        android:id="@+id/tableRow1"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_gravity="bottom"
        android:layout_marginTop="15dp" >

        <Button
            android:id="@+id/button1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Button 1" />

        <Button
            android:id="@+id/button2"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Button 2" />
        
          <Button
            android:id="@+id/button3"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Button 3" />
          
    </TableRow>

</LinearLayout>