<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"

      android:orientation="vertical"

      android:paddingBottom="@dimen/activity_vertical_margin"
      android:paddingLeft="@dimen/activity_horizontal_margin"
      android:paddingRight="@dimen/activity_horizontal_margin"
      android:paddingTop="@dimen/activity_vertical_margin"
      tools:context=".MainActivity" >
  
      <TextView

          android:id="@+id/app_info"

          android:layout_width="match_parent"

          android:layout_height="wrap_content" />
  
      <EditText
          android:id="@+id/uid"
          android:layout_width="match_parent"
          android:layout_height="wrap_content"

          android:gravity="center"

          android:hint="uid" />
  
      <Button
          android:id="@+id/goin"
          android:layout_width="match_parent"
          android:layout_height="wrap_content"
          android:text="Go into Promoter" />

  </LinearLayout>