Android LinearLayout is a ViewGroup subclass, used to provide child View elements one by one either in a particular direction either horizontally or vertically based on the orientation property. We can specify the linear layout orientation using android:orientation attribute.
All the child elements arranged one by one in multiple rows and multiple columns.
- Horizontal list: One row, multiple columns.
- Vertical list: One column, multiple rows.
In this article, we are going to discuss declaration and implementation of LinearLayout.
How to declare LinearLayout in XML file?
First of all, we should declare the LinearLayout in layout file using the below code.
LinearLayout in activity_main.xml file
Following is the code for LinearLayout in xml file.
When we have created layout, we need to load the XML layout resource from our activity onCreate() callback method and access the UI element form the XML using findViewById.
We can run the application using the Android Virtual Device(AVD) to get the output of the above code.