ViewParentCompat

Kotlin |Java

class ViewParentCompat

kotlin.Any
↳	androidx.core.view.ViewParentCompat

Helper for accessing features in ViewParent.

Summary

Public methods
static Unit	`notifySubtreeAccessibilityStateChanged(parent: ViewParent!, child: View!, source: View!, changeType: Int)` Notifies a view parent that the accessibility state of one of its descendants has changed and that the structure of the subtree is different.
static Boolean	`onNestedFling(parent: ViewParent!, target: View!, velocityX: Float, velocityY: Float, consumed: Boolean)` Request a fling from a nested scroll.
static Boolean	`onNestedPreFling(parent: ViewParent!, target: View!, velocityX: Float, velocityY: Float)` React to a nested fling before the target view consumes it.
static Unit	`onNestedPreScroll(parent: ViewParent!, target: View!, dx: Int, dy: Int, consumed: IntArray!)` React to a nested scroll in progress before the target view consumes a portion of the scroll.
static Unit	`onNestedPreScroll(parent: ViewParent!, target: View!, dx: Int, dy: Int, consumed: IntArray!, type: Int)` React to a nested scroll in progress before the target view consumes a portion of the scroll.
static Unit	`onNestedScroll(parent: ViewParent!, target: View!, dxConsumed: Int, dyConsumed: Int, dxUnconsumed: Int, dyUnconsumed: Int)` React to a nested scroll in progress.
static Unit	`onNestedScroll(parent: ViewParent!, target: View!, dxConsumed: Int, dyConsumed: Int, dxUnconsumed: Int, dyUnconsumed: Int, type: Int)` React to a nested scroll in progress.
static Unit	`onNestedScroll(parent: ViewParent!, target: View!, dxConsumed: Int, dyConsumed: Int, dxUnconsumed: Int, dyUnconsumed: Int, type: Int, @NonNull consumed: IntArray)` React to a nested scroll in progress.
static Unit	`onNestedScrollAccepted(parent: ViewParent!, child: View!, target: View!, nestedScrollAxes: Int)` React to the successful claiming of a nested scroll operation.
static Unit	`onNestedScrollAccepted(parent: ViewParent!, child: View!, target: View!, nestedScrollAxes: Int, type: Int)` React to the successful claiming of a nested scroll operation.
static Boolean	`onStartNestedScroll(parent: ViewParent!, child: View!, target: View!, nestedScrollAxes: Int)` React to a descendant view initiating a nestable scroll operation, claiming the nested scroll operation if appropriate.
static Boolean	`onStartNestedScroll(parent: ViewParent!, child: View!, target: View!, nestedScrollAxes: Int, type: Int)` React to a descendant view initiating a nestable scroll operation, claiming the nested scroll operation if appropriate.
static Unit	`onStopNestedScroll(parent: ViewParent!, target: View!)` React to a nested scroll operation ending.
static Unit	`onStopNestedScroll(parent: ViewParent!, target: View!, type: Int)` React to a nested scroll operation ending.
static Boolean	`requestSendAccessibilityEvent(parent: ViewParent!, child: View!, event: AccessibilityEvent!)` Called by a child to request from its parent to send an `AccessibilityEvent`.

Public methods

notifySubtreeAccessibilityStateChanged

static fun notifySubtreeAccessibilityStateChanged(
    parent: ViewParent!, 
    child: View!, 
    source: View!, 
    changeType: Int
): Unit

Notifies a view parent that the accessibility state of one of its descendants has changed and that the structure of the subtree is different.

Parameters
`child`	View!: The direct child whose subtree has changed.
`source`	View!: The descendant view that changed.
`changeType`	Int: A bit mask of the types of changes that occurred. One or more of: `AccessibilityEvent#CONTENT_CHANGE_TYPE_CONTENT_DESCRIPTION` `AccessibilityEvent#CONTENT_CHANGE_TYPE_SUBTREE` `AccessibilityEvent#CONTENT_CHANGE_TYPE_TEXT` `AccessibilityEvent#CONTENT_CHANGE_TYPE_UNDEFINED`

onNestedFling

static fun onNestedFling(
    parent: ViewParent!, 
    target: View!, 
    velocityX: Float, 
    velocityY: Float, 
    consumed: Boolean
): Boolean

Request a fling from a nested scroll.

This method signifies that a nested scrolling child has detected suitable conditions for a fling. Generally this means that a touch scroll has ended with a