Picker


class Picker : FrameLayout

Known direct subclasses
DatePicker

DatePicker is a directly subclass of Picker.

PinPicker

Picker subclass for allowing the user to enter a numerical PIN.

TimePicker

TimePicker is a direct subclass of Picker.


Picker is a widget showing multiple customized PickerColumns. The PickerColumns are initialized in setColumns. Call setColumnAt if the column value range or labels change. Call setColumnValue to update the current value of PickerColumn.

Picker has two states and will change height:

  • isActivated is true: Picker shows typically three items vertically (see getActivatedVisibleItemCount}. Columns other than getSelectedColumn still shows one item if the Picker is focused. On a touch screen device, the Picker will not get focus so it always show three items on all columns. On a non-touch device (a TV), the Picker will show three items only on currently activated column. If the Picker has focus, it will intercept DPAD directions and select activated column.
  • isActivated is false: Picker shows one item vertically (see getVisibleItemCount) on all columns. The size of Picker shrinks.

Summary

Nested types

Listener for Picker value changes.

Public constructors

Picker(context: Context, attributeSet: AttributeSet?)

Creates a Picker widget.

Picker(context: Context, attrs: AttributeSet?, defStyleAttr: Int)

Creates a Picker widget.

Public functions

Unit

Register a callback to be invoked when the picker's value has changed.

Boolean
Float

Returns number of visible items showing in a column when it's activated.

PickerColumn?
getColumnAt(colIndex: Int)

Get nth PickerColumn.

Int

Get number of PickerColumns.

@LayoutRes Int

Classes extending Picker can call setPickerItemLayoutId to supply the Picker's item's layout id

@IdRes Int

Returns the Picker's item's TextView's id from within the layout provided by getPickerItemLayoutId or 0 if the layout provided by getPickerItemLayoutId is a {link TextView}.

Int

Get current activated column index.

CharSequence!

This function is deprecated.

Use getSeparators

(Mutable)List<CharSequence!>

Returns the list of separators that will be populated between the picker column fields.

Float

Returns number of visible items showing in a column when it's not activated.

Unit
onColumnValueChanged(columnIndex: Int, newValue: Int)

Classes extending Picker can override this function to supply the behavior when a list has been scrolled.

Unit

Remove a previously installed value changed callback

Unit
requestChildFocus(child: View!, focused: View!)
Unit
setActivated(activated: Boolean)
Unit
setActivatedVisibleItemCount(visiblePickerItems: Float)

Changes number of visible items showing in a column when it's activated.

Unit
setColumnAt(columnIndex: Int, column: PickerColumn)

When column labels change or column range changes, call this function to re-populate the selection list.

Unit
setColumnValue(columnIndex: Int, value: Int, runAnimation: Boolean)

Manually set current value of a column.

Unit

Set columns and create Views.

Unit
setPickerItemLayoutId(pickerItemLayoutId: @LayoutRes Int)

Sets the layout to use for picker items.

Unit

Sets the Picker's item's TextView's id from within the layout provided by getPickerItemLayoutId or 0 if the layout provided by getPickerItemLayoutId is a {link TextView}.

Unit
setSelectedColumn(columnIndex: Int)

Change current selected column.

Unit

Sets separator String between Picker columns.

Unit

Sets the list of separators that will be populated between the Picker columns.

Unit
setVisibleItemCount(pickerItems: Float)

Changes number of visible items showing in a column when it's not activated.

Protected functions

Int

Classes extending Picker can choose to override this method to supply the Picker's column's single item height in pixels.

Boolean
onRequestFocusInDescendants(direction: Int, previouslyFocusedRect: Rect!)

Inherited Constants

From android.view.View
const Int
const Int
const Int
const Int
const Int
const Int
const Property<View!, Float!>!
const Int
const String!
AUTOFILL_HINT_CREDIT_CARD_EXPIRATION_DATE = "creditCardExpirationDate"
const String!
AUTOFILL_HINT_CREDIT_CARD_EXPIRATION_DAY = "creditCardExpirationDay"
const String!
AUTOFILL_HINT_CREDIT_CARD_EXPIRATION_MONTH = "creditCardExpirationMonth"
const String!
AUTOFILL_HINT_CREDIT_CARD_EXPIRATION_YEAR = "creditCardExpirationYear"
const String!
const String!
AUTOFILL_HINT_CREDIT_CARD_SECURITY_CODE = "creditCardSecurityCode"
const String!
const String!
const String!
const String!
const String!
const String!
const String!
const Int
const Int
const Int
const Int
const Int
const Int
const Int
const Int
const Int
const Int
const Int
const Int
const Int

This property is deprecated.

const Int

This property is deprecated.

const Int

This property is deprecated.

const IntArray<Int>!
const IntArray<Int>!
const IntArray<Int>!
const IntArray<Int>!
const IntArray<Int>!
const IntArray<Int>!
const IntArray<Int>!
const IntArray<Int>!
const IntArray<Int>!
const Int
const Int
const Int
const Int
const Int
const Int
const IntArray<Int>!
const IntArray<Int>!
const IntArray<Int>!
const IntArray<Int>!
const Int
const Int
const Int
const Int
const Int
const Int
const Int
GONE = 8
const Int
const Int
const Int
const Int
const Int
const Int
const Int
const Int
const Int
const Int
const Int
const Int
const Int
const Int
const Int
const Int
const Int
KEEP_SCREEN_ON = 67108864
const Int
const Int
const Int
const Int
const Int
const Int
const Int
const Int
const Int
const Int
const Int
const Int
const Int
NO_ID = -1
const Int
const Int
const Int
const IntArray<Int>!
const IntArray<Int>!
const IntArray<Int>!
const IntArray<Int>!
const IntArray<Int>!
const IntArray<Int>!
const IntArray<Int>!
const IntArray<Int>!
const IntArray<Int>!
const IntArray<Int>!
const IntArray<Int>!
const IntArray<Int>!
const IntArray<Int>!
const IntArray<Int>!
const IntArray<Int>!
const IntArray<Int>!
const Property<View!, Float!>!
const Property<View!, Float!>!
const Property<View!, Float!>!
const Property<View!, Float!>!
const Property<View!, Float!>!
const Int
const Int
const Int
const Int
const Int
const Int
const Int
const Int
const Int
const Int
const Int
const Int
const Int
const Int
const Int
const Int
const Int
const Int
const Int
const Int
const Int
const Int
const IntArray<Int>!
const IntArray<Int>!
const Int
const Int

This property is deprecated.

const Int

This property is deprecated.

const Int

This property is deprecated.

const Int

This property is deprecated.

const Int

This property is deprecated.

const Int

This property is deprecated.

const Int

This property is deprecated.

const Int

This property is deprecated.

const Int

This property is deprecated.

const Int

This property is deprecated.

const Int

This property is deprecated.

const Int

This property is deprecated.

const Int

This property is deprecated.

const Int

This property is deprecated.

const Int
const Int
const Int
const Int
const Int
const Int
const Int
const Int
const Int
const Int
const Int
const Int
const Int
const Int
const Int
const Property<View!, Float!>!
const Property<View!, Float!>!
const Property<View!, Float!>!
const String!
VIEW_LOG_TAG = "View"
const Int
const IntArray<Int>!
const Property<View!, Float!>!
const Property<View!, Float!>!
const Property<View!, Float!>!
From android.view.ViewGroup
const Int
const Int
const Int
const Int
const Int
const Int
const Int

This property is deprecated.

const Int

This property is deprecated.

const Int

This property is deprecated.

const Int

This property is deprecated.

Inherited functions

From android.widget.FrameLayout
From android.view.View
Unit
Unit
Unit
ViewPropertyAnimator!
Unit
Unit
Boolean
Unit
Unit

This function is deprecated.

Unit
Boolean
Boolean
Boolean
Boolean
Boolean
Boolean
Unit
Unit
Unit
Boolean
Unit
Unit
java-static Int
combineMeasuredStates(curState: Int, newState: Int)
Int
Int
Int
Unit
WindowInsets!
computeSystemWindowInsets(in: WindowInsets!, outLocalInsets: Rect!)
Int
Int
Int
AccessibilityNodeInfo!
Unit
Unit

This function is deprecated.

Boolean
Boolean
dispatchNestedFling(velocityX: Float, velocityY: Float, consumed: Boolean)
Boolean
dispatchNestedPreFling(velocityX: Float, velocityY: Float)
Boolean
dispatchNestedPrePerformAccessibilityAction(
    action: Int,
    arguments: Bundle!
)
Boolean
dispatchNestedPreScroll(
    dx: Int,
    dy: Int,
    consumed: IntArray!,
    offsetInWindow: IntArray!
)
Boolean
dispatchNestedScroll(
    dxConsumed: Int,
    dyConsumed: Int,
    dxUnconsumed: Int,
    dyUnconsumed: Int,
    offsetInWindow: IntArray!
)
Boolean
Unit
draw(canvas: Canvas!)
Unit
OnBackInvokedDispatcher!
T!
<T : View?> findViewById(id: Int)
T!
<T : View?> findViewWithTag(tag: Any!)
Boolean

This function is deprecated.

Unit
forceHasOverlappingRendering(hasOverlappingRendering: Boolean)
Unit
Unit
generateDisplayHash(
    hashAlgorithm: String!,
    bounds: Rect!,
    executor: Executor!,
    callback: DisplayHashResultCallback!
)
java-static Int
View.AccessibilityDelegate!
Int
AccessibilityNodeProvider!
CharSequence!
Int
Int
String!
String!
Float
Animation!
Matrix!
IBinder!
IntArray<Int>!
(Mutable)Map<Int!, Int!>!
Array<String!>!
AutofillId!
Int
AutofillValue!
Drawable!
BlendMode!
ColorStateList!
PorterDuff.Mode!
Int
Int
Float
Int
Float
Rect!
Boolean
getClipBounds(outRect: Rect!)
Boolean
ContentCaptureSession!
CharSequence!
Context!
ContextMenu.ContextMenuInfo!
Boolean
java-static Int
getDefaultSize(size: Int, measureSpec: Int)
Display!
IntArray<Int>!
Bitmap!

This function is deprecated.

Int

This function is deprecated.

Int

This function is deprecated.

Unit
getDrawingRect(outRect: Rect!)
Long
Float
Int
Boolean
Boolean
Int
ArrayList<View!>!
getFocusables(direction: Int)
Unit
Drawable!
Int
BlendMode!
ColorStateList!
PorterDuff.Mode!
Boolean
getGlobalVisibleRect(r: Rect!, globalOffset: Point!)
Handler!
Float
Float
Float
Float
Runnable!
Boolean
Int
Unit
getHitRect(outRect: Rect!)
Int
Int
Drawable!
Drawable!
Int
Int
Int
Int
Boolean
KeyEvent.DispatcherState!
Int
Int
Int
ViewGroup.LayoutParams!
Int
Float
Int
Boolean
Unit
Unit
Unit
Matrix!
Int
Int
Int
Int
Int
Int
Int
Int
Int
Int
Int
Int
Int
View.OnFocusChangeListener!
Int
ViewOutlineProvider!
Int
Int
ViewOverlay!
Int
Int
Int
Int
Int
Int
ViewParent!
ViewParent!
Float
Float
PointerIcon!
(Mutable)List<Rect!>!
Array<String!>!
Resources!
Boolean
Int
Float
Int
AttachedSurfaceControl!
View!
WindowInsets!
Float
Float
Float
Float
Float
Int
Int
Int
Int
Int
Int
Int
Int
Int
Int
CharSequence!
StateListAnimator!
Int
Int
(Mutable)List<Rect!>!
Int

This function is deprecated.

Any!
Int
Int
CharSequence!
Int
Float
Int
TouchDelegate!
ArrayList<View!>!
Float
String!
Float
Float
Float
Long
Int
Int
Drawable!
Drawable!
Int
ViewTranslationResponse!
ViewTreeObserver!
Int
Int
Int
WindowId!
WindowInsetsController!
Int

This function is deprecated.

IBinder!
Int
Unit
Float
Float
Float
Boolean
Boolean
Boolean
Boolean
Boolean
Boolean
Boolean
Boolean
java-static View!
inflate(context: Context!, resource: Int, root: ViewGroup!)
Unit
invalidate(dirty: Rect!)

This function is deprecated.

Unit
Unit
Boolean
Boolean
Boolean
Boolean
Boolean
Boolean
Boolean
Boolean
Boolean
Boolean
Boolean

This function is deprecated.

Boolean
Boolean
Boolean
Boolean
Boolean
Boolean
Boolean
Boolean
Boolean
Boolean
Boolean
Boolean
Boolean
Boolean
Boolean
Boolean
Boolean
Boolean
Boolean
Boolean
Boolean
Boolean
Boolean
Boolean
Boolean
Boolean
Boolean
Boolean
Boolean
Boolean
Boolean
Boolean
Boolean
Boolean
Boolean
Boolean
Boolean
Boolean
Boolean
Boolean
Boolean
Boolean
Boolean
Boolean
Boolean
Boolean
View!
keyboardNavigationClusterSearch(currentCluster: View!, direction: Int)
Unit
measure(widthMeasureSpec: Int, heightMeasureSpec: Int)
java-static IntArray<Int>!
mergeDrawableStates(baseState: IntArray!, additionalState: IntArray!)
Unit
Unit
Unit
Unit
WindowInsets!
Unit
Boolean
Boolean
Unit
Unit
InputConnection!
Unit
onCreateViewTranslationRequest(
    supportedFormats: IntArray!,
    requestsCollector: Consumer<ViewTranslationRequest!>!
)
Unit
onCreateVirtualViewTranslationRequests(
    virtualIds: LongArray!,
    supportedFormats: IntArray!,
    requestsCollector: Consumer<ViewTranslationRequest!>!
)
Unit
Boolean
Unit
onDraw(canvas: Canvas!)
Unit
Unit
Boolean
Unit
Unit
Unit
onFocusChanged(
    gainFocus: Boolean,
    direction: Int,
    previouslyFocusedRect: Rect!
)
Boolean
Unit
Boolean
Unit
Unit
Boolean
onKeyDown(keyCode: Int, event: KeyEvent!)
Boolean
onKeyLongPress(keyCode: Int, event: KeyEvent!)
Boolean
onKeyMultiple(keyCode: Int, repeatCount: Int, event: KeyEvent!)
Boolean
onKeyPreIme(keyCode: Int, event: KeyEvent!)
Boolean
onKeyShortcut(keyCode: Int, event: KeyEvent!)
Boolean
onKeyUp(keyCode: Int, event: KeyEvent!)
Unit
onOverScrolled(
    scrollX: Int,
    scrollY: Int,
    clampedX: Boolean,
    clampedY: Boolean
)
Unit
Unit
Unit
Unit
Unit
Unit
Unit
ContentInfo!
Unit
Unit
onRtlPropertiesChanged(layoutDirection: Int)
Parcelable!
Unit
onScreenStateChanged(screenState: Int)
Unit
onScrollCaptureSearch(
    localVisibleRect: Rect!,
    windowOffset: Point!,
    targets: Consumer<ScrollCaptureTarget!>!
)
Unit
onScrollChanged(l: Int, t: Int, oldl: Int, oldt: Int)
Boolean
onSetAlpha(alpha: Int)
Unit
onSizeChanged(w: Int, h: Int, oldw: Int, oldh: Int)
Unit
Boolean
Boolean
Unit
Unit
Unit
Unit
onVisibilityChanged(changedView: View!, visibility: Int)
Unit
onWindowFocusChanged(hasWindowFocus: Boolean)
Unit

This function is deprecated.

Unit
Boolean
overScrollBy(
    deltaX: Int,
    deltaY: Int,
    scrollX: Int,
    scrollY: Int,
    scrollRangeX: Int,
    scrollRangeY: Int,
    maxOverScrollX: Int,
    maxOverScrollY: Int,
    isTouchEvent: Boolean
)
Boolean
performAccessibilityAction(action: Int, arguments: Bundle!)
Boolean
Boolean
Boolean
performHapticFeedback(feedbackConstant: Int)
Boolean
ContentInfo!
Unit
playSoundEffect(soundConstant: Int)
Boolean
post(action: Runnable!)
Boolean
postDelayed(action: Runnable!, delayMillis: Long)
Unit
Unit
postInvalidateDelayed(delayMilliseconds: Long)
Unit
Unit
Unit
postOnAnimationDelayed(action: Runnable!, delayMillis: Long)
Unit
Unit
Boolean
Unit
Unit
Unit
Unit
Unit

This function is deprecated.

Boolean
Unit
Unit
Boolean
Unit
T!
<T : View?> requireViewById(id: Int)
Unit
java-static Int
resolveSize(size: Int, measureSpec: Int)
java-static Int
resolveSizeAndState(size: Int, measureSpec: Int, childMeasuredState: Int)
Unit
Unit
saveAttributeDataForStyleable(
    context: Context!,
    styleable: IntArray!,
    attrs: AttributeSet!,
    t: TypedArray!,
    defStyleAttr: Int,
    defStyleRes: Int
)
Unit
Unit
scheduleDrawable(who: Drawable!, what: Runnable!, when: Long)
Unit
scrollBy(x: Int, y: Int)
Unit
scrollTo(x: Int, y: Int)
Unit
Unit
Unit
setAccessibilityDataSensitive(accessibilityDataSensitive: Int)
Unit
Unit
Unit
Unit
setAccessibilityPaneTitle(accessibilityPaneTitle: CharSequence!)
Unit
Unit
Unit
setAllowClickWhenDisabled(clickableWhenDisabled: Boolean)
Unit
Unit
Unit
setAlpha(alpha: Float)
Unit
setAnimation(animation: Animation!)
Unit
Unit
Unit
setAutofillHints(autofillHints: Array<String!>!)
Unit
Unit
setBackground(background: Drawable!)
Unit
Unit

This function is deprecated.

Unit
Unit
Unit
Unit
Unit
setBottom(bottom: Int)
Unit
Unit
setClickable(clickable: Boolean)
Unit
setClipBounds(clipBounds: Rect!)
Unit
setClipToOutline(clipToOutline: Boolean)
Unit
Unit
setContentDescription(contentDescription: CharSequence!)
Unit
setContextClickable(contextClickable: Boolean)
Unit
setDefaultFocusHighlightEnabled(defaultFocusHighlightEnabled: Boolean)
Unit

This function is deprecated.

Unit

This function is deprecated.

Unit

This function is deprecated.

Unit
Unit
setElevation(elevation: Float)
Unit
setEnabled(enabled: Boolean)
Unit
Unit
Unit
setFitsSystemWindows(fitSystemWindows: Boolean)
Unit
setFocusable(focusable: Boolean)
Unit
setFocusableInTouchMode(focusableInTouchMode: Boolean)
Unit
setFocusedByDefault(isFocusedByDefault: Boolean)
Unit
Unit
setForeground(foreground: Drawable!)
Unit
Unit
Unit
Unit
setHandwritingBoundsOffsets(
    offsetLeft: Float,
    offsetTop: Float,
    offsetRight: Float,
    offsetBottom: Float
)
Unit
Unit
setHapticFeedbackEnabled(hapticFeedbackEnabled: Boolean)
Unit
setHasTransientState(hasTransientState: Boolean)
Unit
setHorizontalFadingEdgeEnabled(horizontalFadingEdgeEnabled: Boolean)
Unit
setHorizontalScrollBarEnabled(horizontalScrollBarEnabled: Boolean)
Unit
Unit
Unit
setHovered(hovered: Boolean)
Unit
setId(id: Int)
Unit
Unit
Unit
Unit
setIsCredential(isCredential: Boolean)
Unit
setIsHandwritingDelegate(isHandwritingDelegate: Boolean)
Unit
setKeepScreenOn(keepScreenOn: Boolean)
Unit
Unit
Unit
Unit
setLayerType(layerType: Int, paint: Paint!)
Unit
setLayoutDirection(layoutDirection: Int)
Unit
Unit
setLeft(left: Int)
Unit
setLeftTopRightBottom(left: Int, top: Int, right: Int, bottom: Int)
Unit
setLongClickable(longClickable: Boolean)
Unit
setMeasuredDimension(measuredWidth: Int, measuredHeight: Int)
Unit
setMinimumHeight(minHeight: Int)
Unit
setMinimumWidth(minWidth: Int)
Unit
Unit
setNextClusterForwardId(nextClusterForwardId: Int)
Unit
setNextFocusDownId(nextFocusDownId: Int)
Unit
setNextFocusForwardId(nextFocusForwardId: Int)
Unit
setNextFocusLeftId(nextFocusLeftId: Int)
Unit
setNextFocusRightId(nextFocusRightId: Int)
Unit
setNextFocusUpId(nextFocusUpId: Int)
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
Unit
setOnReceiveContentListener(
    mimeTypes: Array<String!>!,
    listener: OnReceiveContentListener!
)
Unit
Unit

This function is deprecated.

Unit
Unit
Unit
Unit
Unit
setOverScrollMode(overScrollMode: Int)
Unit
setPadding(left: Int, top: Int, right: Int, bottom: Int)
Unit
setPaddingRelative(start: Int, top: Int, end: Int, bottom: Int)
Unit
setPivotX(pivotX: Float)
Unit
setPivotY(pivotY: Float)
Unit
setPointerIcon(pointerIcon: PointerIcon!)
Unit
setPreferKeepClear(preferKeepClear: Boolean)
Unit
Unit
setPressed(pressed: Boolean)
Unit
setRenderEffect(renderEffect: RenderEffect!)
Unit
setRevealOnFocusHint(revealOnFocus: Boolean)
Unit
setRight(right: Int)
Unit
setRotation(rotation: Float)
Unit
setRotationX(rotationX: Float)
Unit
setRotationY(rotationY: Float)
Unit
Unit
Unit
setScaleX(scaleX: Float)
Unit
setScaleY(scaleY: Float)
Unit
setScreenReaderFocusable(screenReaderFocusable: Boolean)
Unit
setScrollBarDefaultDelayBeforeFade(
    scrollBarDefaultDelayBeforeFade: Int
)
Unit
setScrollBarFadeDuration(scrollBarFadeDuration: Int)
Unit
setScrollBarSize(scrollBarSize: Int)
Unit
Unit
Unit
Unit
setScrollContainer(isScrollContainer: Boolean)
Unit
setScrollIndicators(indicators: Int)
Unit
setScrollX(value: Int)
Unit
setScrollY(value: Int)
Unit
Unit
setSelected(selected: Boolean)
Unit
setSoundEffectsEnabled(soundEffectsEnabled: Boolean)
Unit
setStateDescription(stateDescription: CharSequence!)
Unit
Unit
Unit

This function is deprecated.

Unit
setTag(tag: Any!)
Unit
setTextAlignment(textAlignment: Int)
Unit
setTextDirection(textDirection: Int)
Unit
Unit
setTop(top: Int)
Unit
Unit
Unit
setTransitionName(transitionName: String!)
Unit
Unit
setTranslationX(translationX: Float)
Unit
setTranslationY(translationY: Float)
Unit
setTranslationZ(translationZ: Float)
Unit
setVerticalFadingEdgeEnabled(verticalFadingEdgeEnabled: Boolean)
Unit
setVerticalScrollBarEnabled(verticalScrollBarEnabled: Boolean)
Unit
Unit
Unit
Unit
Unit
setVisibility(visibility: Int)
Unit
setWillNotCacheDrawing(willNotCacheDrawing: Boolean)

This function is deprecated.

Unit
setWillNotDraw(willNotDraw: Boolean)
Unit
setX(x: Float)
Unit
setY(y: Float)
Unit
setZ(z: Float)
Boolean
ActionMode!
Unit
Boolean
startDrag(
    data: ClipData!,
    shadowBuilder: View.DragShadowBuilder!,
    myLocalState: Any!,
    flags: Int
)

This function is deprecated.

Boolean
startDragAndDrop(
    data: ClipData!,
    shadowBuilder: View.DragShadowBuilder!,
    myLocalState: Any!,
    flags: Int
)
Boolean
Unit
String!
Unit
Unit
Unit
Unit
Boolean
Boolean

This function is deprecated.

Boolean
From android.view.ViewGroup
Unit
Unit
addExtraDataToAccessibilityNodeInfo(
    info: AccessibilityNodeInfo!,
    extraDataKey: String!,
    arguments: Bundle!
)
Unit
addFocusables(views: ArrayList<View!>!, direction: Int, focusableMode: Int)
Unit
addKeyboardNavigationClusters(
    views: (Mutable)Collection<View!>!,
    direction: Int
)
Boolean
Unit
Unit
addView(child: View!)
Boolean
addViewInLayout(child: View!, index: Int, params: ViewGroup.LayoutParams!)
Unit
attachLayoutAnimationParameters(
    child: View!,
    params: ViewGroup.LayoutParams!,
    index: Int,
    count: Int
)
Unit
attachViewToParent(child: View!, index: Int, params: ViewGroup.LayoutParams!)
Unit
Boolean
Unit
Unit
childHasTransientStateChanged(
    child: View!,
    childHasTransientState: Boolean
)
Unit
Unit
Unit
Unit
Unit
debug(depth: Int)
Unit
Unit
Unit
detachViewsFromParent(start: Int, count: Int)
WindowInsets!
Boolean
Unit
Unit
dispatchCreateViewTranslationRequest(
    viewIds: (Mutable)Map<AutofillId!, LongArray!>!,
    supportedFormats: IntArray!,
    capability: TranslationCapability!,
    requests: (Mutable)List<ViewTranslationRequest!>!
)
Unit
Boolean
Unit
dispatchDraw(canvas: Canvas!)
Unit
Unit
Unit
Boolean
Boolean
Boolean
Boolean
Boolean
Unit
Unit
Unit
Unit
Unit
Unit
dispatchScrollCaptureSearch(
    localVisibleRect: Rect!,
    windowOffset: Point!,
    targets: Consumer<ScrollCaptureTarget!>!
)
Unit
Unit
Unit
Unit
Unit

This function is deprecated.

Unit
Boolean
Boolean
Boolean
dispatchUnhandledMove(focused: View!, direction: Int)
Unit
dispatchVisibilityChanged(changedView: View!, visibility: Int)
Unit
Unit
Unit
WindowInsets!
dispatchWindowInsetsAnimationProgress(
    insets: WindowInsets!,
    runningAnimations: (Mutable)List<WindowInsetsAnimation!>!
)
WindowInsetsAnimation.Bounds!
Unit

This function is deprecated.

Unit
Boolean
drawChild(canvas: Canvas!, child: View!, drawingTime: Long)
Unit
Unit
View!
OnBackInvokedDispatcher!
Unit
findViewsWithText(
    outViews: ArrayList<View!>!,
    text: CharSequence!,
    flags: Int
)
View!
focusSearch(focused: View!, direction: Int)
Unit
Boolean
View!
getChildAt(index: Int)
Int
Int
getChildDrawingOrder(childCount: Int, drawingPosition: Int)
java-static Int
getChildMeasureSpec(spec: Int, padding: Int, childDimension: Int)
Boolean
Boolean
getChildVisibleRect(child: View!, r: Rect!, offset: Point!)
Boolean
Boolean
Int
View!
LayoutAnimationController!
Animation.AnimationListener!
Int
LayoutTransition!
Int
ViewGroupOverlay!
Int

This function is deprecated.

Boolean
Boolean
Boolean
Int
indexOfChild(child: View!)
Unit
invalidateChild(child: View!, dirty: Rect!)

This function is deprecated.

ViewParent!
invalidateChildInParent(location: IntArray!, dirty: Rect!)

This function is deprecated.

Boolean

This function is deprecated.

Boolean

This function is deprecated.

Boolean
Boolean

This function is deprecated.

Boolean
Boolean
Boolean
Unit
Unit
layout(l: Int, t: Int, r: Int, b: Int)
Unit
measureChild(
    child: View!,
    parentWidthMeasureSpec: Int,
    parentHeightMeasureSpec: Int
)
Unit
measureChildWithMargins(
    child: View!,
    parentWidthMeasureSpec: Int,
    widthUsed: Int,
    parentHeightMeasureSpec: Int,
    heightUsed: Int
)
Unit
measureChildren(widthMeasureSpec: Int, heightMeasureSpec: Int)
Unit
notifySubtreeAccessibilityStateChanged(
    child: View!,
    source: View!,
    changeType: Int
)
Unit
offsetDescendantRectToMyCoords(descendant: View!, rect: Rect!)
Unit
offsetRectIntoDescendantCoords(descendant: View!, rect: Rect!)
Unit
IntArray<Int>!
Unit
onDescendantInvalidated(child: View!, target: View!)
Unit
Boolean
Boolean
Boolean
onNestedFling(
    target: View!,
    velocityX: Float,
    velocityY: Float,
    consumed: Boolean
)
Boolean
onNestedPreFling(target: View!, velocityX: Float, velocityY: Float)
Boolean
onNestedPrePerformAccessibilityAction(
    target: View!,
    action: Int,
    args: Bundle!
)
Unit
onNestedPreScroll(target: View!, dx: Int, dy: Int, consumed: IntArray!)
Unit
onNestedScroll(
    target: View!,
    dxConsumed: Int,
    dyConsumed: Int,
    dxUnconsumed: Int,
    dyUnconsumed: Int
)
Unit
onNestedScrollAccepted(child: View!, target: View!, axes: Int)
Boolean
PointerIcon!
onResolvePointerIcon(event: MotionEvent!, pointerIndex: Int)
Boolean
onStartNestedScroll(child: View!, target: View!, nestedScrollAxes: Int)
Unit
Unit
onViewAdded(child: View!)
Unit
Unit
Unit
Unit
Unit
removeDetachedView(child: View!, animate: Boolean)
Unit
removeView(view: View!)
Unit
removeViewAt(index: Int)
Unit
Unit
removeViews(start: Int, count: Int)
Unit
removeViewsInLayout(start: Int, count: Int)
Boolean
requestChildRectangleOnScreen(
    child: View!,
    rectangle: Rect!,
    immediate: Boolean
)
Unit
Boolean
requestFocus(direction: Int, previouslyFocusedRect: Rect!)
Boolean
Unit
Boolean
Unit
Unit
Unit

This function is deprecated.

Unit

This function is deprecated.

Unit

This function is deprecated.

Unit
Unit

This function is deprecated.

Unit
setClipChildren(clipChildren: Boolean)
Unit
setClipToPadding(clipToPadding: Boolean)
Unit
Unit
Unit
Unit
setLayoutMode(layoutMode: Int)
Unit
Unit
Unit
Unit
setPersistentDrawingCache(drawingCacheToKeep: Int)

This function is deprecated.

Unit
Unit
setTouchscreenBlocksFocus(touchscreenBlocksFocus: Boolean)
Unit
setTransitionGroup(isTransitionGroup: Boolean)
Unit
Boolean
showContextMenuForChild(originalView: View!)
ActionMode!
startActionModeForChild(
    originalView: View!,
    callback: ActionMode.Callback!
)
Unit
Unit
Unit
Unit

Public constructors

Picker

Added in 1.1.0
Picker(context: Context, attributeSet: AttributeSet?)

Creates a Picker widget.

Picker

Added in 1.1.0
Picker(context: Context, attrs: AttributeSet?, defStyleAttr: Int)

Creates a Picker widget.

Public functions

addOnValueChangedListener

Added in 1.1.0
fun addOnValueChangedListener(listener: Picker.PickerValueListener): Unit

Register a callback to be invoked when the picker's value has changed.

Parameters
listener: Picker.PickerValueListener

The callback to ad

dispatchKeyEvent

fun dispatchKeyEvent(event: KeyEvent!): Boolean

getActivatedVisibleItemCount

Added in 1.1.0
fun getActivatedVisibleItemCount(): Float

Returns number of visible items showing in a column when it's activated. The default value is 3.

Returns
Float

Number of visible items showing in a column when it's activated.

getColumnAt

Added in 1.1.0
fun getColumnAt(colIndex: Int): PickerColumn?

Get nth PickerColumn.

Parameters
colIndex: Int

Index of PickerColumn.

Returns
PickerColumn?

PickerColumn at colIndex or null if setColumns is not called yet.

getColumnsCount

Added in 1.1.0
fun getColumnsCount(): Int

Get number of PickerColumns.

Returns
Int

Number of PickerColumns or 0 if setColumns is not called yet.

getPickerItemLayoutId

Added in 1.1.0
fun getPickerItemLayoutId(): @LayoutRes Int

Classes extending Picker can call setPickerItemLayoutId to supply the Picker's item's layout id

getPickerItemTextViewId

Added in 1.1.0
fun getPickerItemTextViewId(): @IdRes Int

Returns the Picker's item's TextView's id from within the layout provided by getPickerItemLayoutId or 0 if the layout provided by getPickerItemLayoutId is a {link TextView}.

getSelectedColumn

Added in 1.1.0
fun getSelectedColumn(): Int

Get current activated column index.

Returns
Int

Current activated column index.

getSeparator

Added in 1.1.0
Deprecated in 1.1.0
fun getSeparator(): CharSequence!

Gets separator string between columns.

Returns
CharSequence!

The separator that will be populated between all the Picker columns.

getSeparators

Added in 1.1.0
fun getSeparators(): (Mutable)List<CharSequence!>

Returns the list of separators that will be populated between the picker column fields.

Returns
(Mutable)List<CharSequence!>

The list of separators populated between the picker column fields.

getVisibleItemCount

Added in 1.1.0
fun getVisibleItemCount(): Float

Returns number of visible items showing in a column when it's not activated. The default value is 1.

Returns
Float

Number of visible items showing in a column when it's not activated.

onColumnValueChanged

Added in 1.1.0
fun onColumnValueChanged(columnIndex: Int, newValue: Int): Unit

Classes extending Picker can override this function to supply the behavior when a list has been scrolled. Subclass may call setColumnValue and or setColumnAt. Subclass should not directly call setCurrentValue which does not update internal state or notify listeners.

Parameters
columnIndex: Int

index of which column was changed.

newValue: Int

A new value desired to be set on the column.

removeOnValueChangedListener

Added in 1.1.0
fun removeOnValueChangedListener(listener: Picker.PickerValueListener): Unit

Remove a previously installed value changed callback

Parameters
listener: Picker.PickerValueListener

The callback to remove.

requestChildFocus

fun requestChildFocus(child: View!, focused: View!): Unit

setActivated

fun setActivated(activated: Boolean): Unit

setActivatedVisibleItemCount

Added in 1.1.0
fun setActivatedVisibleItemCount(visiblePickerItems: Float): Unit

Changes number of visible items showing in a column when it's activated. The default value is 3.

Parameters
visiblePickerItems: Float

Number of visible items showing in a column when it's activated.

setColumnAt

Added in 1.1.0
fun setColumnAt(columnIndex: Int, column: PickerColumn): Unit

When column labels change or column range changes, call this function to re-populate the selection list. Note this function cannot be called from RecyclerView layout/scroll pass.

Parameters
columnIndex: Int

Index of column to update.

column: PickerColumn

New column to update.

setColumnValue

Added in 1.1.0
fun setColumnValue(columnIndex: Int, value: Int, runAnimation: Boolean): Unit

Manually set current value of a column. The function will update UI and notify listeners.

Parameters
columnIndex: Int

Index of column to update.

value: Int

New value of the column.

runAnimation: Boolean

True to scroll to the value or false otherwise.

setColumns

Added in 1.1.0
fun setColumns(columns: (Mutable)List<PickerColumn!>): Unit

Set columns and create Views.

Parameters
columns: (Mutable)List<PickerColumn!>

The actual focusable columns of a picker which are scrollable if the field takes more than one value (e.g. for a DatePicker, day, month, and year fields and for TimePicker, hour, minute, and am/pm fields form the columns).

setPickerItemLayoutId

Added in 1.1.0
fun setPickerItemLayoutId(pickerItemLayoutId: @LayoutRes Int): Unit

Sets the layout to use for picker items.

Parameters
pickerItemLayoutId: @LayoutRes Int

Layout resource id to use for picker items.

setPickerItemTextViewId

Added in 1.1.0
fun setPickerItemTextViewId(textViewId: @IdRes Int): Unit

Sets the Picker's item's TextView's id from within the layout provided by getPickerItemLayoutId or 0 if the layout provided by getPickerItemLayoutId is a {link TextView}.

Parameters
textViewId: @IdRes Int

View id of TextView inside a Picker item, or 0 if the Picker item is a TextView.

setSelectedColumn

Added in 1.1.0
fun setSelectedColumn(columnIndex: Int): Unit

Change current selected column. Picker shows multiple items on selected column if Picker has focus. Picker shows multiple items on all column if Picker has no focus (e.g. a Touchscreen screen).

Parameters
columnIndex: Int

Index of column to activate.

setSeparator

Added in 1.1.0
fun setSeparator(separator: CharSequence): Unit

Sets separator String between Picker columns.

Parameters
separator: CharSequence

Separator String between Picker columns.

setSeparators

Added in 1.1.0
fun setSeparators(separators: (Mutable)List<CharSequence!>): Unit

Sets the list of separators that will be populated between the Picker columns. The number of the separators should be either 1 indicating the same separator used between all the columns fields (and nothing will be placed before the first and after the last column), or must be one unit larger than the number of columns passed to setColumns. In the latter case, the list of separators corresponds to the positions before the first column all the way to the position after the last column. An empty string for a given position indicates no separators needs to be placed for that position, otherwise a TextView with the given String will be created and placed there.

Parameters
separators: (Mutable)List<CharSequence!>

The list of separators to be populated between the Picker columns.

setVisibleItemCount

Added in 1.1.0
fun setVisibleItemCount(pickerItems: Float): Unit

Changes number of visible items showing in a column when it's not activated. The default value is 1.

Parameters
pickerItems: Float

Number of visible items showing in a column when it's not activated.

Protected functions

getPickerItemHeightPixels

Added in 1.1.0
protected fun getPickerItemHeightPixels(): Int

Classes extending Picker can choose to override this method to supply the Picker's column's single item height in pixels.

onRequestFocusInDescendants

protected fun onRequestFocusInDescendants(direction: Int, previouslyFocusedRect: Rect!): Boolean