DrawerLayout

open class DrawerLayout : ViewGroup, Openable

kotlin.Any
↳	android.view.View
	↳	android.view.ViewGroup
		↳	androidx.drawerlayout.widget.DrawerLayout

DrawerLayout acts as a top-level container for window content that allows for interactive "drawer" views to be pulled out from one or both vertical edges of the window.

Drawer positioning and layout is controlled using the android:layout_gravity attribute on child views corresponding to which side of the view you want the drawer to emerge from: left or right (or start/end on platform versions that support layout direction.) Note that you can only have one drawer view for each vertical edge of the window. If your layout configures more than one drawer view per vertical edge of the window, an exception will be thrown at runtime.

To use a DrawerLayout, position your primary content view as the first child with width and height of match_parent and no layout_gravity>. Add drawers as child views after the main content view and set the layout_gravity appropriately. Drawers commonly use match_parent for height with a fixed width.

DrawerListener can be used to monitor the state and motion of drawer views. Avoid performing expensive operations such as layout during animation as it can cause stuttering; try to perform expensive operations during the STATE_IDLE state. SimpleDrawerListener offers default/no-op implementations of each callback method.

As per the Android Design guide, any drawers positioned to the left/start should always contain content for navigating around the application, whereas any drawers positioned to the right/end should always contain actions to take on the current content. This preserves the same navigation left, actions right structure present in the Action Bar and elsewhere.

For more information about how to use DrawerLayout, read Creating a Navigation Drawer.

Summary

Nested classes
abstract	DrawerListener Listener for monitoring events about drawers.
open	LayoutParams
open	SavedState State persisted across instances
abstract	SimpleDrawerListener Stub/no-op implementations of all methods of DrawerListener.

Constants
static Int	LOCK_MODE_LOCKED_CLOSED The drawer is locked closed.
static Int	LOCK_MODE_LOCKED_OPEN The drawer is locked open.
static Int	LOCK_MODE_UNDEFINED The drawer's lock state is reset to default.
static Int	LOCK_MODE_UNLOCKED The drawer is unlocked.
static Int	STATE_DRAGGING Indicates that a drawer is currently being dragged by the user.
static Int	STATE_IDLE Indicates that any drawers are in an idle, settled state.
static Int	STATE_SETTLING Indicates that a drawer is in the process of settling to a final position.

Public constructors
<init>(@NonNull context: Context)
<init>(@NonNull context: Context, @Nullable attrs: AttributeSet?)
<init>(@NonNull context: Context, @Nullable attrs: AttributeSet?, defStyleAttr: Int)

Public methods
open Unit	addDrawerListener(@NonNull listener: DrawerLayout.DrawerListener) Adds the specified listener to the list of listeners that will be notified of drawer events.
open Unit	addFocusables(views: ArrayList<View!>!, direction: Int, focusableMode: Int)
open Unit	addView(child: View!, index: Int, params: LayoutParams!)
open Unit	close() Close the GravityCompat#START drawer by animating it out of view.
open Unit	closeDrawer(@NonNull drawerView: View) Close the specified drawer view by animating it into view.
open Unit	closeDrawer(@NonNull drawerView: View, animate: Boolean) Close the specified drawer view.
open Unit	closeDrawer(gravity: Int) Close the specified drawer by animating it out of view.
open Unit	closeDrawer(gravity: Int, animate: Boolean) Close the specified drawer.
open Unit	closeDrawers() Close all currently open drawer views by animating them out of view.
open Unit	computeScroll()
open Boolean	dispatchGenericMotionEvent(event: MotionEvent!)
open LayoutParams!	generateLayoutParams(attrs: AttributeSet!)
open Float	getDrawerElevation() The base elevation of the drawer(s) relative to the parent, in pixels.
open Int	getDrawerLockMode(edgeGravity<