Flow

Artifact: androidx.constraintlayout:constraintlayout

Added in 2.2.1

Kotlin |Java

public class Flow extends VirtualLayout

java.lang.Object
↳	android.view.View
	↳	androidx.constraintlayout.widget.ConstraintHelper
		↳	androidx.constraintlayout.widget.VirtualLayout
			↳	androidx.constraintlayout.helper.widget.Flow

Flow VirtualLayout. Added in 2.0 Allows positioning of referenced widgets horizontally or vertically, similar to a Chain. The elements referenced are indicated via constraint_referenced_ids, as with other ConstraintHelper implementations. Those referenced widgets are then laid out by the Flow virtual layout in three possible ways:

wrap none : simply create a chain out of the referenced elements
wrap chain : create multiple chains (one after the other) if the referenced elements do not fit
wrap aligned : similar to wrap chain, but will align the elements by creating rows and columns

As VirtualLayouts are ConstraintHelpers, they are normal views; you can thus treat them as such, and setting up constraints on them (position, dimension) or some view attributes (background, padding) will work. The main difference between VirtualLayouts and ViewGroups is that:

VirtualLayout keep the hierarchy flat
Other views can thus reference / constrain to not only the VirtualLayout, but also the views laid out by the VirtualLayout
VirtualLayout allow on the fly behavior modifications (e.g. for Flow, changing the orientation)

flow_wrapMode = "none" This will simply create an horizontal or vertical chain out of the referenced widgets. This is the default behavior of Flow. XML attributes that are allowed in this mode:

flow_horizontalStyle = "spread|spread_inside|packed"
flow_verticalStyle = "spread|spread_inside|packed"
flow_horizontalBias = "float"
flow_verticalBias = "float"
flow_horizontalGap = "dimension"
flow_verticalGap = "dimension"
flow_horizontalAlign = "start|end"
flow_verticalAlign = "top|bottom|center|baseline

While the elements are laid out as a chain in the orientation defined, the way they are laid out in the other dimension is controlled by flow_horizontalAlign and flow_verticalAlign attributes. flow_wrapMode = "chain" Similar to wrap none in terms of creating chains, but if the referenced widgets do not fit the horizontal or vertical dimension (depending on the orientation picked), they will wrap around to the next line / column. XML attributes are the same same as in wrap_none, with the addition of attributes specifying chain style and chain bias applied to the first chain. This way, it is possible to specify different chain behavior between the first chain and the rest of the chains eventually created.

flow_firstHorizontalStyle = "spread|spread_inside|packed"
flow_firstVerticalStyle = "spread|spread_inside|packed"
flow_firstHorizontalBias = "float"
flow_firstVerticalBias = "float"

One last important attribute is flow_maxElementsWrap, which specify the number of elements before wrapping, regardless if they fit or not in the available space. flow_wrapMode = "aligned" Same XML attributes as for WRAP_CHAIN, with the difference that the elements are going to be laid out in a set of rows and columns instead of chains. The attribute specifying chains style and bias are thus not going to be applied.

Summary

Constants
`static final int`	`CHAIN_PACKED = 2`
`static final int`	`CHAIN_SPREAD = 0`
`static final int`	`CHAIN_SPREAD_INSIDE = 1`
`static final int`	`HORIZONTAL = 0`
`static final int`	`HORIZONTAL_ALIGN_CENTER = 2`
`static final int`	`HORIZONTAL_ALIGN_END = 1`
`static final int`	`HORIZONTAL_ALIGN_START = 0`
`static final int`	`VERTICAL = 1`
`static final int`	`VERTICAL_ALIGN_BASELINE = 3`
`static final int`	`VERTICAL_ALIGN_BOTTOM = 1`
`static final int`	`VERTICAL_ALIGN_CENTER = 2`
`static final int`	`VERTICAL_ALIGN_TOP = 0`
`static final int`	`WRAP_ALIGNED = 2`
`static final int`	`WRAP_CHAIN = 1`
`static final int`	`WRAP_NONE = 0`

Public constructors
`Flow(Context context)`
`Flow(Context context, AttributeSet attrs)`
`Flow(Context context, AttributeSet attrs, int defStyleAttr)`

Public methods
`void`	`loadParameters( ConstraintSet.Constraint constraint, HelperWidget child, ConstraintLayout.LayoutParams layoutParams, SparseArray<ConstraintWidget> mapIdToWidget )`
`void`	`onMeasure( VirtualLayout layout, int widthMeasureSpec, int heightMeasureSpec )`
`void`	`resolveRtl(ConstraintWidget widget, boolean isRtl)`
`void`	`setFirstHorizontalBias(float bias)` Similar to setHorizontalBias(), but only applied to the first chain.
`void`	`setFirstHorizontalStyle(int style)` Similar to setHorizontalStyle(), but only applies to the first chain.
`void`	`setFirstVerticalBias(float bias)` Similar to setVerticalBias(), but only applied to the first chain.
`void`	`setFirstVerticalStyle(int style)` Similar to setVerticalStyle(), but only applies to the first chain.
`void`	`setHorizontalAlign(int align)` Set up the horizontal alignment of the elements in the layout, if the layout orientation is set to Flow.VERTICAL Can be either: Flow.HORIZONTAL_ALIGN_START Flow.HORIZONTAL_ALIGN_END Flow.HORIZONTAL_ALIGN_CENTER
`void`	`setHorizontalBias(float bias)` Set the horizontal bias applied to the chain
`void`	`setHorizontalGap(int gap)` Set up the horizontal gap between elements
`void`	`setHorizontalStyle(int style)` Set horizontal chain style.
`void`	`setLastHorizontalBias(float bias)` Set the bias of the last Horizontal column.
`void`	`setLastHorizontalStyle(int style)` Set the style of the last Horizontal column.
`void`	`setLastVerticalBias(float bias)` Set the bias of the last vertical row.
`void`	`setLastVerticalStyle(int style)` Set the style of the last vertical row.
`void`	`setMaxElementsWrap(int max)` Set up the maximum number of elements before wrapping.
`void`	`setOrientation(int orientation)` Set the orientation of the layout
`void`	`setPadding(int padding)` Set padding around the content
`void`	`setPaddingBottom(int paddingBottom)` Set padding bottom around the content
`void`	`setPaddingLeft(int paddingLeft)` Set padding left around the content
`void`	`setPaddingRight(int paddingRight)` Set padding right around the content
`void`	`setPaddingTop(int paddingTop)` Set padding top around the content
`void`	`setVerticalAlign(int align)` Set up the vertical alignment of the elements in the layout, if the layout orientation is set to Flow.HORIZONTAL Can be either: Flow.VERTICAL_ALIGN_TOP Flow.VERTICAL_ALIGN_BOTTOM Flow.VERTICAL_ALIGN_CENTER Flow.VERTICAL_ALIGN_BASELINE
`void`	`setVerticalBias(float bias)` Set the vertical bias applied to the chain
`void`	`setVerticalGap(int gap)` Set up the vertical gap between elements
`void`	`setVerticalStyle(int style)` Set vertical chain style.
`void`	`setWrapMode(int mode)` Set wrap mode for the layout.

Protected methods
`void`	`init(AttributeSet attrs)`
`void`	`onMeasure(int widthMeasureSpec, int heightMeasureSpec)`

Inherited Constants

From androidx.constraintlayout.widget.ConstraintHelper

static final String

CHILD_TAG = "CONSTRAINT_LAYOUT_HELPER_CHILD"

From android.view.View

`static final int`	`ACCESSIBILITY_DATA_SENSITIVE_AUTO = 0`
`static final int`	`ACCESSIBILITY_DATA_SENSITIVE_NO = 2`
`static final int`	`ACCESSIBILITY_DATA_SENSITIVE_YES = 1`
`static final int`	`ACCESSIBILITY_LIVE_REGION_ASSERTIVE = 2`
`static final int`	`ACCESSIBILITY_LIVE_REGION_NONE = 0`
`static final int`	`ACCESSIBILITY_LIVE_REGION_POLITE = 1`
`static final Property<View, Float>`	`ALPHA`
`static final int`	`AUTOFILL_FLAG_INCLUDE_NOT_IMPORTANT_VIEWS = 1`
`static final String`	`AUTOFILL_HINT_CREDIT_CARD_EXPIRATION_DATE = "creditCardExpirationDate"`
`static final String`	`AUTOFILL_HINT_CREDIT_CARD_EXPIRATION_DAY = "creditCardExpirationDay"`
`static final String`	`AUTOFILL_HINT_CREDIT_CARD_EXPIRATION_MONTH = "creditCardExpirationMonth"`
`static final String`	`AUTOFILL_HINT_CREDIT_CARD_EXPIRATION_YEAR = "creditCardExpirationYear"`
`static final String`	`AUTOFILL_HINT_CREDIT_CARD_NUMBER = "creditCardNumber"`
`static final String`	`AUTOFILL_HINT_CREDIT_CARD_SECURITY_CODE = "creditCardSecurityCode"`
`static final String`	`AUTOFILL_HINT_EMAIL_ADDRESS = "emailAddress"`
`static final String`	`AUTOFILL_HINT_NAME = "name"`
`static final String`	`AUTOFILL_HINT_PASSWORD = "password"`
`static final String`	`AUTOFILL_HINT_PHONE = "phone"`
`static final String`	`AUTOFILL_HINT_POSTAL_ADDRESS = "postalAddress"`
`static final String`	`AUTOFILL_HINT_POSTAL_CODE = "postalCode"`
`static final String`	`AUTOFILL_HINT_USERNAME = "username"`
`static final int`	`AUTOFILL_TYPE_DATE = 4`
`static final int`	`AUTOFILL_TYPE_LIST = 3`
`static final int`	`AUTOFILL_TYPE_NONE = 0`
`static final int`	`AUTOFILL_TYPE_TEXT = 1`
`static final int`	`AUTOFILL_TYPE_TOGGLE = 2`
`static final int`	`CONTENT_SENSITIVITY_AUTO = 0`
`static final int`	`CONTENT_SENSITIVITY_NOT_SENSITIVE = 2`
`static final int`	`CONTENT_SENSITIVITY_SENSITIVE = 1`
`static final int`	`DRAG_FLAG_ACCESSIBILITY_ACTION = 1024`
`static final int`	`DRAG_FLAG_GLOBAL = 256`
`static final int`	`DRAG_FLAG_GLOBAL_PERSISTABLE_URI_PERMISSION = 64`
`static final int`	`DRAG_FLAG_GLOBAL_PREFIX_URI_PERMISSION = 128`
`static final int`	`DRAG_FLAG_GLOBAL_SAME_APPLICATION = 4096`
`static final int`	`DRAG_FLAG_GLOBAL_URI_READ = 1`
`static final int`	`DRAG_FLAG_GLOBAL_URI_WRITE = 2`
`static final int`	`DRAG_FLAG_HIDE_CALLING_TASK_ON_DRAG_START = 16384`
`static final int`	`DRAG_FLAG_OPAQUE = 512`
`static final int`	`DRAG_FLAG_START_INTENT_SENDER_ON_UNHANDLED_DRAG = 8192`
`static final int`	`DRAWING_CACHE_QUALITY_AUTO = 0` This field is deprecated.
`static final int`	`DRAWING_CACHE_QUALITY_HIGH = 1048576` This field is deprecated.
`static final int`	`DRAWING_CACHE_QUALITY_LOW = 524288` This field is deprecated.
`static final int[]`	`EMPTY_STATE_SET`
`static final int[]`	`ENABLED_FOCUSED_SELECTED_STATE_SET`
`static final int[]`	`ENABLED_FOCUSED_SELECTED_WINDOW_FOCUSED_STATE_SET`
`static final int[]`	`ENABLED_FOCUSED_STATE_SET`
`static final int[]`	`ENABLED_FOCUSED_WINDOW_FOCUSED_STATE_SET`
`static final int[]`	`ENABLED_SELECTED_STATE_SET`
`static final int[]`	`ENABLED_SELECTED_WINDOW_FOCUSED_STATE_SET`
`static final int[]`	`ENABLED_STATE_SET`
`static final int[]`	`ENABLED_WINDOW_FOCUSED_STATE_SET`
`static final int`	`FIND_VIEWS_WITH_CONTENT_DESCRIPTION = 2`
`static final int`	`FIND_VIEWS_WITH_TEXT = 1`
`static final int`	`FOCUSABLE = 1`
`static final int`	`FOCUSABLES_ALL = 0`
`static final int`	`FOCUSABLES_TOUCH_MODE = 1`
`static final int`	`FOCUSABLE_AUTO = 16`
`static final int[]`	`FOCUSED_SELECTED_STATE_SET`
`static final int[]`	`FOCUSED_SELECTED_WINDOW_FOCUSED_STATE_SET`
`static final int[]`	`FOCUSED_STATE_SET`
`static final int[]`	`FOCUSED_WINDOW_FOCUSED_STATE_SET`
`static final int`	`FOCUS_BACKWARD = 1`
`static final int`	`FOCUS_DOWN = 130`
`static final int`	`FOCUS_FORWARD = 2`
`static final int`	`FOCUS_LEFT = 17`
`static final int`	`FOCUS_RIGHT = 66`
`static final int`	`FOCUS_UP = 33`
`static final int`	`GONE = 8`
`static final int`	`HAPTIC_FEEDBACK_ENABLED = 268435456`
`static final int`	`IMPORTANT_FOR_ACCESSIBILITY_AUTO = 0`
`static final int`	`IMPORTANT_FOR_ACCESSIBILITY_NO = 2`
`static final int`	`IMPORTANT_FOR_ACCESSIBILITY_NO_HIDE_DESCENDANTS = 4`
`static final int`	`IMPORTANT_FOR_ACCESSIBILITY_YES = 1`
`static final int`	`IMPORTANT_FOR_AUTOFILL_AUTO = 0`
`static final int`	`IMPORTANT_FOR_AUTOFILL_NO = 2`
`static final int`	`IMPORTANT_FOR_AUTOFILL_NO_EXCLUDE_DESCENDANTS = 8`
`static final int`	`IMPORTANT_FOR_AUTOFILL_YES = 1`
`static final int`	`IMPORTANT_FOR_AUTOFILL_YES_EXCLUDE_DESCENDANTS = 4`
`static final int`	`IMPORTANT_FOR_CONTENT_CAPTURE_AUTO = 0`
`static final int`	`IMPORTANT_FOR_CONTENT_CAPTURE_NO = 2`
`static final int`	`IMPORTANT_FOR_CONTENT_CAPTURE_NO_EXCLUDE_DESCENDANTS = 8`
`static final int`	`IMPORTANT_FOR_CONTENT_CAPTURE_YES = 1`
`static final int`	`IMPORTANT_FOR_CONTENT_CAPTURE_YES_EXCLUDE_DESCENDANTS = 4`
`static final int`	`INVISIBLE = 4`
`static final int`	`KEEP_SCREEN_ON = 67108864`
`static final int`	`LAYER_TYPE_HARDWARE = 2`
`static final int`	`LAYER_TYPE_NONE = 0`
`static final int`	`LAYER_TYPE_SOFTWARE = 1`
`static final int`	`LAYOUT_DIRECTION_INHERIT = 2`
`static final int`	`LAYOUT_DIRECTION_LOCALE = 3`
`static final int`	`LAYOUT_DIRECTION_LTR = 0`
`static final int`	`LAYOUT_DIRECTION_RTL = 1`
`static final int`	`MEASURED_HEIGHT_STATE_SHIFT = 16`
`static final int`	`MEASURED_SIZE_MASK = 16777215`
`static final int`	`MEASURED_STATE_MASK = -16777216`
`static final int`	`MEASURED_STATE_TOO_SMALL = 16777216`
`static final int`	`NOT_FOCUSABLE = 0`
`static final int`	`NO_ID = -1`
`static final int`	`OVER_SCROLL_ALWAYS = 0`
`static final int`	`OVER_SCROLL_IF_CONTENT_SCROLLS = 1`
`static final int`	`OVER_SCROLL_NEVER = 2`
`static final int[]`	`PRESSED_ENABLED_FOCUSED_SELECTED_STATE_SET`
`static final int[]`	`PRESSED_ENABLED_FOCUSED_SELECTED_WINDOW_FOCUSED_STATE_SET`
`static final int[]`	`PRESSED_ENABLED_FOCUSED_STATE_SET`
`static final int[]`	`PRESSED_ENABLED_FOCUSED_WINDOW_FOCUSED_STATE_SET`
`static final int[]`	`PRESSED_ENABLED_SELECTED_STATE_SET`
`static final int[]`	`PRESSED_ENABLED_SELECTED_WINDOW_FOCUSED_STATE_SET`
`static final int[]`	`PRESSED_ENABLED_STATE_SET`
`static final int[]`	`PRESSED_ENABLED_WINDOW_FOCUSED_STATE_SET`
`static final int[]`	`PRESSED_FOCUSED_SELECTED_STATE_SET`
`static final int[]`	`PRESSED_FOCUSED_SELECTED_WINDOW_FOCUSED_STATE_SET`
`static final int[]`	`PRESSED_FOCUSED_STATE_SET`
`static final int[]`	`PRESSED_FOCUSED_WINDOW_FOCUSED_STATE_SET`
`static final int[]`	`PRESSED_SELECTED_STATE_SET`
`static final int[]`	`PRESSED_SELECTED_WINDOW_FOCUSED_STATE_SET`
`static final int[]`	`PRESSED_STATE_SET`
`static final int[]`	`PRESSED_WINDOW_FOCUSED_STATE_SET`
`static final float`	`REQUESTED_FRAME_RATE_CATEGORY_DEFAULT`
`static final float`	`REQUESTED_FRAME_RATE_CATEGORY_HIGH = -4.0f`
`static final float`	`REQUESTED_FRAME_RATE_CATEGORY_LOW = -2.0f`
`static final float`	`REQUESTED_FRAME_RATE_CATEGORY_NORMAL = -3.0f`
`static final float`	`REQUESTED_FRAME_RATE_CATEGORY_NO_PREFERENCE = -1.0f`
`static final Property<View, Float>`	`ROTATION`
`static final Property<View, Float>`	`ROTATION_X`
`static final Property<View, Float>`	`ROTATION_Y`
`static final Property<View, Float>`	`SCALE_X`
`static final Property<View, Float>`	`SCALE_Y`
`static final int`	`SCREEN_STATE_OFF = 0`
`static final int`	`SCREEN_STATE_ON = 1`
`static final int`	`SCROLLBARS_INSIDE_INSET = 16777216`
`static final int`	`SCROLLBARS_INSIDE_OVERLAY = 0`
`static final int`	`SCROLLBARS_OUTSIDE_INSET = 50331648`
`static final int`	`SCROLLBARS_OUTSIDE_OVERLAY = 33554432`
`static final int`	`SCROLLBAR_POSITION_DEFAULT = 0`
`static final int`	`SCROLLBAR_POSITION_LEFT = 1`
`static final int`	`SCROLLBAR_POSITION_RIGHT = 2`
`static final int`	`SCROLL_AXIS_HORIZONTAL = 1`
`static final int`	`SCROLL_AXIS_NONE = 0`
`static final int`	`SCROLL_AXIS_VERTICAL = 2`
`static final int`	`SCROLL_CAPTURE_HINT_AUTO = 0`
`static final int`	`SCROLL_CAPTURE_HINT_EXCLUDE = 1`
`static final int`	`SCROLL_CAPTURE_HINT_EXCLUDE_DESCENDANTS = 4`
`static final int`	`SCROLL_CAPTURE_HINT_INCLUDE = 2`
`static final int`	`SCROLL_INDICATOR_BOTTOM = 2`
`static final int`	`SCROLL_INDICATOR_END = 32`
`static final int`	`SCROLL_INDICATOR_LEFT = 4`
`static final int`	`SCROLL_INDICATOR_RIGHT = 8`
`static final int`	`SCROLL_INDICATOR_START = 16`
`static final int`	`SCROLL_INDICATOR_TOP = 1`
`static final int[]`	`SELECTED_STATE_SET`
`static final int[]`	`SELECTED_WINDOW_FOCUSED_STATE_SET`
`static final int`	`SOUND_EFFECTS_ENABLED = 134217728`
`static final int`	`STATUS_BAR_HIDDEN = 1` This field is deprecated.
`static final int`	`STATUS_BAR_VISIBLE = 0` This field is deprecated.
`static final int`	`SYSTEM_UI_FLAG_FULLSCREEN = 4` This field is deprecated.
`static final int`	`SYSTEM_UI_FLAG_HIDE_NAVIGATION = 2` This field is deprecated.
`static final int`	`SYSTEM_UI_FLAG_IMMERSIVE = 2048` This field is deprecated.
`static final int`	`SYSTEM_UI_FLAG_IMMERSIVE_STICKY = 4096` This field is deprecated.
`static final int`	`SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN = 1024` This field is deprecated.
`static final int`	`SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION = 512` This field is deprecated.
`static final int`	`SYSTEM_UI_FLAG_LAYOUT_STABLE = 256` This field is deprecated.
`static final int`	`SYSTEM_UI_FLAG_LIGHT_NAVIGATION_BAR = 16` This field is deprecated.
`static final int`	`SYSTEM_UI_FLAG_LIGHT_STATUS_BAR = 8192` This field is deprecated.
`static final int`	`SYSTEM_UI_FLAG_LOW_PROFILE = 1` This field is deprecated.
`static final int`	`SYSTEM_UI_FLAG_VISIBLE = 0` This field is deprecated.
`static final int`	`SYSTEM_UI_LAYOUT_FLAGS = 1536` This field is deprecated.
`static final int`	`TEXT_ALIGNMENT_CENTER = 4`
`static final int`	`TEXT_ALIGNMENT_GRAVITY = 1`
`static final int`	`TEXT_ALIGNMENT_INHERIT = 0`
`static final int`	`TEXT_ALIGNMENT_TEXT_END = 3`
`static final int`	`TEXT_ALIGNMENT_TEXT_START = 2`
`static final int`	`TEXT_ALIGNMENT_VIEW_END = 6`
`static final int`	`TEXT_ALIGNMENT_VIEW_START = 5`
`static final int`	`TEXT_DIRECTION_ANY_RTL = 2`
`static final int`	`TEXT_DIRECTION_FIRST_STRONG = 1`
`static final int`	`TEXT_DIRECTION_FIRST_STRONG_LTR = 6`
`static final int`	`TEXT_DIRECTION_FIRST_STRONG_RTL = 7`
`static final int`	`TEXT_DIRECTION_INHERIT = 0`
`static final int`	`TEXT_DIRECTION_LOCALE = 5`
`static final int`	`TEXT_DIRECTION_LTR = 3`
`static final int`	`TEXT_DIRECTION_RTL = 4`
`static final Property<View, Float>`	`TRANSLATION_X`
`static final Property<View, Float>`	`TRANSLATION_Y`
`static final Property<View, Float>`	`TRANSLATION_Z`
`static final String`	`VIEW_LOG_TAG = "View"`
`static final int`	`VISIBLE = 0`
`static final int[]`	`WINDOW_FOCUSED_STATE_SET`
`static final Property<View, Float>`	`X`
`static final Property<View, Float>`	`Y`
`static final Property<View, Float>`	`Z`

Inherited fields

From androidx.constraintlayout.widget.ConstraintHelper

`int`	`mCount`
`Helper`	`mHelperWidget`
`int[]`	`mIds`
`HashMap<Integer, String>`	`mMap`
`String`	`mReferenceIds`
`String`	`mReferenceTags`
`boolean`	`mUseViewMeasure`
`Context`	`myContext`

Inherited methods

From androidx.constraintlayout.widget.ConstraintHelper

`void`	`addView(View view)` Add a view to the helper.
`void`	`applyHelperParams()` hook for helpers to apply parameters in MotionLayout
`void`	`applyLayoutFeatures()`
`void`	`applyLayoutFeatures(ConstraintLayout container)`
`boolean`	`containsId(int id)` does id table contain the id
`int[]`	`getReferencedIds()` Helpers typically reference a collection of ids
`View[]`	`getViews(ConstraintLayout layout)`
`int`	`indexFromId(int id)` find the position of an id
`static boolean`	`isChildOfHelper(View v)`
`void`	`onDraw(@NonNull Canvas canvas)`
`int`	`removeView(View view)` Remove a given view from the helper.
`void`	`setIds(String idList)`
`void`	`setReferenceTags(String tagList)`
`void`	`setReferencedIds(int[] ids)` Helpers typically reference a collection of ids
`void`	`setTag(int key, Object tag)`
`void`	`updatePostConstraints(ConstraintLayout container)` update after constraints are resolved
`void`	`updatePostLayout(ConstraintLayout container)` Allows a helper a chance to update its internal object post layout or set up connections for the pointed elements
`void`	`updatePostMeasure(ConstraintLayout container)`
`void`	`updatePreDraw(ConstraintLayout container)` called before the draw
`void`	`updatePreLayout(ConstraintLayout container)` Allows a helper a chance to update its internal object pre layout or set up connections for the pointed elements
`void`	`updatePreLayout( ConstraintWidgetContainer container, Helper helper, SparseArray<ConstraintWidget> map )` called before solver resolution
`void`	`validateParams()` Allows a helper to replace the default ConstraintWidget in LayoutParams by its own subclass

From android.view.View

`void`	`addChildrenForAccessibility(ArrayList<View> outChildren)`
`void`	`addExtraDataToAccessibilityNodeInfo( AccessibilityNodeInfo info, String extraDataKey, Bundle arguments )`
`void`	`addFocusables(ArrayList<View> views, int direction)`
`void`	`addKeyboardNavigationClusters(Collection<View> views, int direction)`
`void`	`addOnAttachStateChangeListener( View.OnAttachStateChangeListener listener )`
`void`	`addOnLayoutChangeListener(View.OnLayoutChangeListener listener)`
`void`	`addOnUnhandledKeyEventListener( View.OnUnhandledKeyEventListener listener )`
`void`	`addTouchables(ArrayList<View> views)`
`ViewPropertyAnimator`	`animate()`
`void`	`announceForAccessibility(CharSequence text)` This method is deprecated.
`void`	`autofill(SparseArray<AutofillValue> values)`
`boolean`	`awakenScrollBars()`
`void`	`bringToFront()`
`void`	`buildDrawingCache()` This method is deprecated.
`void`	`buildLayer()`
`boolean`	`callOnClick()`
`boolean`	`canResolveLayoutDirection()`
`boolean`	`canResolveTextAlignment()`
`boolean`	`canResolveTextDirection()`
`boolean`	`canScrollHorizontally(int direction)`
`boolean`	`canScrollVertically(int direction)`
`final void`	`cancelDragAndDrop()`
`void`	`cancelLongPress()`
`final void`	`cancelPendingInputEvents()`

Flow

Summary

Constants

Public constructors

Public methods

Protected methods

Inherited Constants

Inherited fields

Inherited methods