alignParentGravity

alignParentGravity is a layout attribute used in Android development, specifically within the context of RelativeLayout. It is a boolean attribute that, when set to true, causes the view to align itself to the bottom edge of its parent layout. This means that the bottom boundary of the view will coincide with the bottom boundary of the RelativeLayout.

To use alignParentBottom, you would typically declare it within the XML layout file for a specific View element. For example:

<TextView

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="This text is at the bottom"

android:layout_alignParentBottom="true" />

In this snippet, the TextView will be positioned at the very bottom of its parent RelativeLayout. It's important to note that alignParentBottom overrides other alignment attributes if they conflict. It is a direct instruction to place the view against the parent's bottom. This attribute is commonly used to ensure certain elements, like a copyright notice or a navigation bar, consistently remain at the bottom of the screen regardless of the content above them. When combined with other layout attributes, it offers precise control over the positioning of UI elements within a RelativeLayout.