Question

I want following layout in my app.
A button at top, second botton at bottom and third occupying the whole middle space. Following code I am using bt it is not showing the second button. How to achieve the result ?

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout android:id="@+id/LinearLayout01"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical">
           <!--view=2-->

   <Button
    android:id="@+id/button2"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:text="Save" 
     />

<Button
    android:id="@+id/button4"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:text="Previous" 
  />
 <Button
    android:id="@+id/button5"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"

    android:text="Next" 
   />
</LinearLayout>

Answer 1

You can achieve it through Relative Layout

Here you go

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/LinearLayout01"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    >

    <!-- view=2 -->

    <Button
        android:id="@+id/button2"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="Save" />

    <Button
        android:id="@+id/button4"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:text="Previous" />


    <Button
        android:id="@+id/button5"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:layout_above="@+id/button4"
        android:layout_below="@+id/button2"
        android:text="Next" />


</RelativeLayout>

Quoting OP’s Second Question

what if in the top row there are three buttons, then what reference
shall i use in android:layout_below

Here you go

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/LinearLayout01"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >

    <!-- view=2 -->

    <LinearLayout
        android:id="@+id/LinearLayout01"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal" >

        <Button
            android:id="@+id/button2"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:text="Save" />

        <Button
            android:id="@+id/button12"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:text="Save" />

        <Button
            android:id="@+id/button22"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:text="Save" />
    </LinearLayout>

    <Button
        android:id="@+id/button4"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:text="Previous" />

    <Button
        android:id="@+id/button5"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:layout_above="@+id/button4"
        android:layout_below="@+id/LinearLayout01"
        android:text="Next" />

</RelativeLayout>

It will give you following output