Question

I have layout included inside another layout , I want this included one aligned bottom when I include it

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

<Button 
        android:text="Enter Piano course" 
        android:id="@+id/btnEnterCourse" 
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"></Button>

<include 
                layout="@layout/powered_by_bar"></include>
</LinearLayout>

in this code sample I want to align powered_by_bar to the bottom of the interface

Answer 1

In a vertical LinearLayout you cannot align at bottom (or at top) but left or right. In horizontal LinearLayout you can align bottom and top but not left or right.

To do that you have to wrap the inner LinearLayout in a horizontal LinearLayout and set the layout_weight and layout_gravity correctly:

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

            <Button android:text="Enter Piano course" 
                    android:id="@+id/btnEnterCourse" 
                    android:layout_width="fill_parent"
                    android:layout_height="wrap_content"></Button>

            <LinearLayout android:layout_weight="1" android:orientation="horizontal" android:layout_width="fill_parent" android:layout_height="fill_parent" >
                    <LinearLayout android:background="#0000ff" android:layout_gravity="bottom" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="30dip" />
            </LinearLayout>
    </LinearLayout>