Android development first try - part 2

In Android development first try I was having some problems getting my views centered in my Droidulus Android application.

This showed out to be rather simple after all (it always is when you know how).

The layout file I needed to get this working (this may not be the most appropriate or efficient way) is listed below. And adding the image here as well for reference.

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
 android:id="@+id/main"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content">

 <TextView
 android:id="@+id/score"
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:text="TextView"
 android:textSize="@dimen/point_font_size"
 >
 </TextView>


 <LinearLayout
  android:id="@+id/row1"
     android:layout_width="wrap_content"
     android:layout_height="wrap_content"
  android:layout_gravity="center_horizontal"
  android:orientation="horizontal">
  
  <TextView
  android:id="@+id/assignment"
  android:layout_width="wrap_content"
  android:layout_height="wrap_content"
  android:text="TextView"
  android:textSize="@dimen/font_size"
  android:layout_x="20dip"
  android:layout_y="20dip"
  >
  </TextView>
 </LinearLayout>

 <LinearLayout
  android:id="@+id/row2"
     android:layout_width="wrap_content"
     android:layout_height="wrap_content"
  android:layout_gravity="center_horizontal"
  android:orientation="horizontal">
 
  <Button
  android:id="@+id/answer1"
  android:layout_width="@dimen/answerButton_width"
  android:layout_height="wrap_content"
  android:layout_x="50dip"
  android:layout_y="150dip"
  >
  </Button>
  <Button
  android:id="@+id/answer2"
  android:layout_width="@dimen/answerButton_width"
  android:layout_height="wrap_content"
  android:layout_x="150dip"
  android:layout_y="150dip"
  >
  </Button>
  <Button
  android:id="@+id/answer3"
  android:layout_width="@dimen/answerButton_width"
  android:layout_height="wrap_content"
  android:layout_x="250dip"
  android:layout_y="150dip"
  >
  </Button>
 </LinearLayout>

  <TableLayout 
      android:id="@+id/myTableLayout"
         android:layout_gravity="center_horizontal"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:layout_marginTop="20dip"
      >
  </TableLayout>
</LinearLayout>