core/androidx.core.widget/NestedScrollView

NestedScrollView

open class NestedScrollView : FrameLayout, NestedScrollingParent3, NestedScrollingChild3, ScrollingView(source)

SESL Variant NestedScrollView is just like ScrollView, but it supports acting as both a nested scrolling parent and child on both new and old versions of Android. Nested scrolling is enabled by default.

Constructors

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constructor(@NonNull context: Context)
constructor(@NonNull context: Context, @Nullable attrs: AttributeSet)
constructor(@NonNull context: Context, @Nullable attrs: AttributeSet, defStyleAttr: Int)

Types

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interface OnScrollChangeListener
Interface definition for a callback to be invoked when the scroll X or Y positions of a view change.

Functions

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open fun addView(@NonNull child: View)
open fun addView(child: View, params: ViewGroup.LayoutParams)
open fun addView(child: View, index: Int)
open fun addView(child: View, index: Int, params: ViewGroup.LayoutParams)
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open fun arrowScroll(direction: Int): Boolean
Handle scrolling in response to an up or down arrow click.
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open fun computeScroll()
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@RestrictTo(value = LIBRARY_GROUP_PREFIX)
open fun computeVerticalScrollRange(): Int
The scroll range of a scroll view is the overall height of all of its children.
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open fun dispatchDraw(@NonNull canvas: Canvas)
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open fun dispatchKeyEvent(event: KeyEvent): Boolean
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open fun dispatchNestedFling(velocityX: Float, velocityY: Float, consumed: Boolean): Boolean
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open fun dispatchNestedPreFling(velocityX: Float, velocityY: Float): Boolean
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open fun dispatchNestedPreScroll(dx: Int, dy: Int, @Nullable consumed: Array<Int>, @Nullable offsetInWindow: Array<Int>): Boolean

open fun dispatchNestedPreScroll(dx: Int, dy: Int, @Nullable consumed: Array<Int>, @Nullable offsetInWindow: Array<Int>, type: Int): Boolean
Dispatch one step of a nested scroll in progress before this view consumes any portion of it.
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open fun dispatchNestedScroll(dxConsumed: Int, dyConsumed: Int, dxUnconsumed: Int, dyUnconsumed: Int, @Nullable offsetInWindow: Array<Int>): Boolean

open fun dispatchNestedScroll(dxConsumed: Int, dyConsumed: Int, dxUnconsumed: Int, dyUnconsumed: Int, @Nullable offsetInWindow: Array<Int>, type: Int): Boolean
open fun dispatchNestedScroll(dxConsumed: Int, dyConsumed: Int, dxUnconsumed: Int, dyUnconsumed: Int, @Nullable offsetInWindow: Array<Int>, type: Int, @NonNull consumed: Array<Int>)
Dispatch one step of a nested scroll in progress.
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open fun draw(@NonNull canvas: Canvas)
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open fun executeKeyEvent(@NonNull event: KeyEvent): Boolean
You can call this function yourself to have the scroll view perform scrolling from a key event, just as if the event had been dispatched to it by the view hierarchy.
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open fun fling(velocityY: Int)
Fling the scroll view
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open fun flingWithoutAcc(velocityY: Int)
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open fun fullScroll(direction: Int): Boolean
Handles scrolling in response to a "home/end" shortcut press.
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open fun getMaxScrollAmount(): Int
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open fun getNestedScrollAxes(): Int
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open fun hasNestedScrollingParent(): Boolean

open fun hasNestedScrollingParent(type: Int): Boolean
Returns true if this view has a nested scrolling parent for the given input type.
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open fun isFillViewport(): Boolean
Indicates whether this ScrollView's content is stretched to fill the viewport.
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open fun onAttachedToWindow()
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open fun onGenericMotionEvent(@NonNull motionEvent: MotionEvent): Boolean
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open fun onNestedFling(@NonNull target: View, velocityX: Float, velocityY: Float, consumed: Boolean): Boolean
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open fun onNestedPreFling(@NonNull target: View, velocityX: Float, velocityY: Float): Boolean
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open fun onNestedPreScroll(@NonNull target: View, dx: Int, dy: Int, @NonNull consumed: Array<Int>)

open fun onNestedPreScroll(@NonNull target: View, dx: Int, dy: Int, @NonNull consumed: Array<Int>, type: Int)
React to a nested scroll in progress before the target view consumes a portion of the scroll.
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open fun onNestedScroll(@NonNull target: View, dxConsumed: Int, dyConsumed: Int, dxUnconsumed: Int, dyUnconsumed: Int)

open fun onNestedScroll(@NonNull target: View, dxConsumed: Int, dyConsumed: Int, dxUnconsumed: Int, dyUnconsumed: Int, type: Int)
open fun onNestedScroll(@NonNull target: View, dxConsumed: Int, dyConsumed: Int, dxUnconsumed: Int, dyUnconsumed: Int, type: Int, @NonNull consumed: Array<Int>)
React to a nested scroll in progress.
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open fun onNestedScrollAccepted(@NonNull child: View, @NonNull target: View, axes: Int)

open fun onNestedScrollAccepted(@NonNull child: View, @NonNull target: View, axes: Int, type: Int)
React to the successful claiming of a nested scroll operation.
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open fun onStartNestedScroll(@NonNull child: View, @NonNull target: View, axes: Int): Boolean

open fun onStartNestedScroll(@NonNull child: View, @NonNull target: View, axes: Int, type: Int): Boolean
React to a descendant view initiating a nestable scroll operation, claiming the nested scroll operation if appropriate.
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open fun onStopNestedScroll(@NonNull target: View)

open fun onStopNestedScroll(@NonNull target: View, type: Int)
React to a nested scroll operation ending.
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open fun onTouchEvent(@NonNull motionEvent: MotionEvent): Boolean
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open fun pageScroll(direction: Int): Boolean
Handles scrolling in response to a "page up/down" shortcut press.
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open fun requestChildFocus(child: View, focused: View)
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open fun requestChildRectangleOnScreen(@NonNull child: View, rectangle: Rect, immediate: Boolean): Boolean
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open fun requestDisallowInterceptTouchEvent(disallowIntercept: Boolean)
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open fun requestLayout()
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open fun scrollTo(x: Int, y: Int)
This version also clamps the scrolling to the bounds of our child.
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open fun seslSetFillHorizontalPaddingEnabled(enabled: Boolean, color: Int)
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open fun seslSetGoToTopEnabled(enabled: Boolean)
open fun seslSetGoToTopEnabled(enabled: Boolean, buttonStyle: Int)
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open fun seslSetHoverScrollEnabled(enabled: Boolean)
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open fun seslSetScrollbarVerticalPadding(topPadding: Int, bottomPadding: Int)
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open fun setFillViewport(fillViewport: Boolean)
Set whether this ScrollView should stretch its content height to fill the viewport or not.
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open fun setNestedScrollingEnabled(enabled: Boolean)
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open fun setOnScrollChangeListener(@Nullable l: NestedScrollView.OnScrollChangeListener)
Register a callback to be invoked when the scroll X or Y positions of this view change.
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open fun setSmoothScrollingEnabled(smoothScrollingEnabled: Boolean)
Set whether arrow scrolling will animate its transition.
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fun smoothScrollBy(dx: Int, dy: Int)
fun smoothScrollBy(dx: Int, dy: Int, scrollDurationMs: Int)
Like scrollBy, but scroll smoothly instead of immediately.
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fun smoothScrollTo(x: Int, y: Int)
fun smoothScrollTo(x: Int, y: Int, scrollDurationMs: Int)
Like scrollTo, but scroll smoothly instead of immediately.
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open fun startNestedScroll(axes: Int): Boolean

open fun startNestedScroll(axes: Int, type: Int): Boolean
Begin a nestable scroll operation along the given axes, for the given input type.
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open fun stopNestedScroll()

open fun stopNestedScroll(type: Int)
Stop a nested scroll in progress for the given input type.