added in version 26.1.0
belongs to Maven artifact com.android.support:support-compat:28.0.0-alpha1

Summary: Methods | Inherited Methods | [Expand All]

NestedScrollingParent2

public interface NestedScrollingParent2
implements NestedScrollingParent

android.support.v4.view.NestedScrollingParent2

Known Indirect Subclasses

This interface should be implemented by ViewGroup subclasses that wish to support scrolling operations delegated by a nested child view.

Classes implementing this interface should create a final instance of a NestedScrollingParentHelper as a field and delegate any View or ViewGroup methods to the NestedScrollingParentHelper methods of the same signature.

Views invoking nested scrolling functionality should always do so from the relevant ViewCompat, ViewGroupCompat or ViewParentCompat compatibility shim static methods. This ensures interoperability with nested scrolling views on all versions of Android.

Summary

Public methods
`abstract void`	`onNestedPreScroll(View target, int dx, int dy, int[] consumed, int type)` React to a nested scroll in progress before the target view consumes a portion of the scroll.
`abstract void`	`onNestedScroll(View target, int dxConsumed, int dyConsumed, int dxUnconsumed, int dyUnconsumed, int type)` React to a nested scroll in progress.
`abstract void`	`onNestedScrollAccepted(View child, View target, int axes, int type)` React to the successful claiming of a nested scroll operation.
`abstract boolean`	`onStartNestedScroll(View child, View target, int axes, int type)` React to a descendant view initiating a nestable scroll operation, claiming the nested scroll operation if appropriate.
`abstract void`	`onStopNestedScroll(View target, int type)` React to a nested scroll operation ending.

Inherited methods

From interface


  
    android.support.v4.view.NestedScrollingParent

`abstract int`	`getNestedScrollAxes()` Return the current axes of nested scrolling for this NestedScrollingParent.
`abstract boolean`	`onNestedFling(View target, float velocityX, float velocityY, boolean consumed)` Request a fling from a nested scroll.
`abstract boolean`	`onNestedPreFling(View target, float velocityX, float velocityY)` React to a nested fling before the target view consumes it.
`abstract void`	`onNestedPreScroll(View target, int dx, int dy, int[] consumed)` React to a nested scroll in progress before the target view consumes a portion of the scroll.
`abstract void`	`onNestedScroll(View target, int dxConsumed, int dyConsumed, int dxUnconsumed, int dyUnconsumed)` React to a nested scroll in progress.
`abstract void`	`onNestedScrollAccepted(View child, View target, int axes)` React to the successful claiming of a nested scroll operation.
`abstract boolean`	`onStartNestedScroll(View child, View target, int axes)` React to a descendant view initiating a nestable scroll operation, claiming the nested scroll operation if appropriate.
`abstract void`	`onStopNestedScroll(View target)` React to a nested scroll operation ending.

Public methods

onNestedPreScroll

added in version 26.1.0

void onNestedPreScroll (View target, 
                int dx, 
                int dy,