java.lang.Object | |
↳ | android.support.v4.view.NestedScrollingParentHelper |
Helper class for implementing nested scrolling parent views compatible with Android platform versions earlier than Android 5.0 Lollipop (API 21).
ViewGroup
subclasses should instantiate a final instance
of this class as a field at construction. For each ViewGroup
method that has
a matching method signature in this class, delegate the operation to the helper instance
in an overriden method implementation. This implements the standard framework policy
for nested scrolling.
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 Android
5.0 Lollipop and newer.
Public Constructors | |||||||||||
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Construct a new helper for a given ViewGroup
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Public Methods | |||||||||||
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Return the current axes of nested scrolling for this ViewGroup.
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Called when a nested scrolling operation initiated by a descendant view is accepted
by this ViewGroup.
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Inherited Methods | |||||||||||
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From class
java.lang.Object
|
Construct a new helper for a given ViewGroup
Return the current axes of nested scrolling for this ViewGroup.
This is a delegate method. Call it from your ViewGroup
subclass method/NestedScrollingParent
interface method with the same signature
to implement the standard policy.
Called when a nested scrolling operation initiated by a descendant view is accepted by this ViewGroup.
This is a delegate method. Call it from your ViewGroup
subclass method/NestedScrollingParent
interface method with the same signature
to implement the standard policy.