IT. Expert System.

Android Reference

GridLayout

android.widget

Class GridLayout

java.lang.Object
- android.view.View
- - android.view.ViewGroup
  - - android.widget.GridLayout

All Implemented Interfaces:

Drawable.Callback, AccessibilityEventSource, KeyEvent.Callback, ViewManager, ViewParent
```
public class GridLayout
extends ViewGroup
```
A layout that places its children in a rectangular grid.
The grid is composed of a set of infinitely thin lines that separate the viewing area into cells. Throughout the API, grid lines are referenced by grid indices. A grid with N columns has N + 1 grid indices that run from 0 through N inclusive. Regardless of how GridLayout is configured, grid index 0 is fixed to the leading edge of the container and grid index N is fixed to its trailing edge (after padding is taken into account).
Row and Column Specs
Children occupy one or more contiguous cells, as defined by their rowSpec and columnSpec layout parameters. Each spec defines the set of rows or columns that are to be occupied; and how children should be aligned within the resulting group of cells. Although cells do not normally overlap in a GridLayout, GridLayout does not prevent children being defined to occupy the same cell or group of cells. In this case however, there is no guarantee that children will not themselves overlap after the layout operation completes.
Default Cell Assignment
If a child does not specify the row and column indices of the cell it wishes to occupy, GridLayout assigns cell locations automatically using its: orientation, rowCount and columnCount properties.
Space
Space between children may be specified either by using instances of the dedicated Space view or by setting the leftMargin, topMargin, rightMargin and bottomMargin layout parameters. When the useDefaultMargins property is set, default margins around children are automatically allocated based on the prevailing UI style guide for the platform. Each of the margins so defined may be independently overridden by an assignment to the appropriate layout parameter. Default values will generally produce a reasonable spacing between components but values may change between different releases of the platform.
Excess Space Distribution
GridLayout's distribution of excess space is based on priority rather than weight.
A child's ability to stretch is inferred from the alignment properties of its row and column groups (which are typically set by setting the gravity property of the child's layout parameters). If alignment was defined along a given axis then the component is taken as flexible in that direction. If no alignment was set, the component is instead assumed to be inflexible.
Multiple components in the same row or column group are considered to act in parallel. Such a group is flexible only if all of the components within it are flexible. Row and column groups that sit either side of a common boundary are instead considered to act in series. The composite group made of these two elements is flexible if one of its elements is flexible.
To make a column stretch, make sure all of the components inside it define a gravity. To prevent a column from stretching, ensure that one of the components in the column does not define a gravity.
When the principle of flexibility does not provide complete disambiguation, GridLayout's algorithms favour rows and columns that are closer to its right and bottom edges.
Limitations
GridLayout does not provide support for the principle of weight, as defined in LinearLayout.LayoutParams.weight. In general, it is not therefore possible to configure a GridLayout to distribute excess space between multiple components.
Some common use-cases may nevertheless be accommodated as follows. To place equal amounts of space around a component in a cell group; use CENTER alignment (or gravity). For complete control over excess space distribution in a row or column; use a LinearLayout subview to hold the components in the associated cell group. When using either of these techniques, bear in mind that cell groups may be defined to overlap.
See GridLayout.LayoutParams for a full description of the layout parameters used by GridLayout.

Nested Class Summary

Nested Classes
Modifier and Type	Class and Description
`static class`	`GridLayout.Alignment` Alignments specify where a view should be placed within a cell group and what size it should be.
`static class`	`GridLayout.LayoutParams` Layout information associated with each of the children of a GridLayout.
`static class`	`GridLayout.Spec` A Spec defines the horizontal or vertical characteristics of a group of cells.

Nested classes/interfaces inherited from class android.view.ViewGroup
ViewGroup.MarginLayoutParams, ViewGroup.OnHierarchyChangeListener

Nested classes/interfaces inherited from class android.view.View
View.AccessibilityDelegate, View.BaseSavedState, View.DragShadowBuilder, View.MeasureSpec, View.OnAttachStateChangeListener, View.OnClickListener, View.OnCreateContextMenuListener, View.OnDragListener, View.OnFocusChangeListener, View.OnGenericMotionListener, View.OnHoverListener, View.OnKeyListener, View.OnLayoutChangeListener, View.OnLongClickListener, View.OnSystemUiVisibilityChangeListener, View.OnTouchListener

Field Summary

Fields
Modifier and Type	Field and Description
`static int`	`ALIGN_BOUNDS` This constant is an `alignmentMode`.
`static int`	`ALIGN_MARGINS` This constant is an `alignmentMode`.
`static GridLayout.Alignment`	`BASELINE` Indicates that a view should be aligned with the baselines of the other views in its cell group.
`static GridLayout.Alignment`	`BOTTOM` Indicates that a view should be aligned with the bottom edges of the other views in its cell group.
`static GridLayout.Alignment`	`CENTER` Indicates that a view should be centered with the other views in its cell group.
`static GridLayout.Alignment`	`END` Indicates that a view should be aligned with the end edges of the other views in its cell group.
`static GridLayout.Alignment`	`FILL` Indicates that a view should expanded to fit the boundaries of its cell group.
`static int`	`HORIZONTAL` The horizontal orientation.
`static GridLayout.Alignment`	`LEFT` Indicates that a view should be aligned with the left edges of the other views in its cell group.
`static GridLayout.Alignment`	`RIGHT` Indicates that a view should be aligned with the right edges of the other views in its cell group.
`static GridLayout.Alignment`	`START` Indicates that a view should be aligned with the start edges of the other views in its cell group.
`static GridLayout.Alignment`	`TOP` Indicates that a view should be aligned with the top edges of the other views in its cell group.
`static int`	`UNDEFINED` The constant used to indicate that a value is undefined.
`static int`	`VERTICAL` The vertical orientation.

Fields inherited from class android.view.ViewGroup
CLIP_BOUNDS, CLIP_TO_PADDING_MASK, FLAG_DISALLOW_INTERCEPT, FLAG_SUPPORT_STATIC_TRANSFORMATIONS, FLAG_USE_CHILD_DRAWING_ORDER, FOCUS_AFTER_DESCENDANTS, FOCUS_BEFORE_DESCENDANTS, FOCUS_BLOCK_DESCENDANTS, mDisappearingChildren, mGroupFlags, mOnHierarchyChangeListener, mPersistentDrawingCache, OPTICAL_BOUNDS, PERSISTENT_ALL_CACHES, PERSISTENT_ANIMATION_CACHE, PERSISTENT_NO_CACHE, PERSISTENT_SCROLLING_CACHE

Fields inherited from class android.view.View
ALPHA, DEBUG_LAYOUT_PROPERTY, DRAG_FLAG_GLOBAL, DRAWING_CACHE_QUALITY_AUTO, DRAWING_CACHE_QUALITY_HIGH, DRAWING_CACHE_QUALITY_LOW, EMPTY_STATE_SET, ENABLED_FOCUSED_SELECTED_STATE_SET, ENABLED_FOCUSED_SELECTED_WINDOW_FOCUSED_STATE_SET, ENABLED_FOCUSED_STATE_SET, ENABLED_FOCUSED_WINDOW_FOCUSED_STATE_SET, ENABLED_SELECTED_STATE_SET, ENABLED_SELECTED_WINDOW_FOCUSED_STATE_SET, ENABLED_STATE_SET, ENABLED_WINDOW_FOCUSED_STATE_SET, FIND_VIEWS_WITH_ACCESSIBILITY_NODE_PROVIDERS, FIND_VIEWS_WITH_CONTENT_DESCRIPTION, FIND_VIEWS_WITH_TEXT, FOCUS_BACKWARD, FOCUS_DOWN, FOCUS_FORWARD, FOCUS_LEFT, FOCUS_RIGHT, FOCUS_UP, FOCUSABLES_ALL, FOCUSABLES_TOUCH_MODE, FOCUSED_SELECTED_STATE_SET, FOCUSED_SELECTED_WINDOW_FOCUSED_STATE_SET, FOCUSED_STATE_SET, FOCUSED_WINDOW_FOCUSED_STATE_SET, GONE, HAPTIC_FEEDBACK_ENABLED, IMPORTANT_FOR_ACCESSIBILITY_AUTO, IMPORTANT_FOR_ACCESSIBILITY_NO, IMPORTANT_FOR_ACCESSIBILITY_YES, INVISIBLE, KEEP_SCREEN_ON, LAYER_TYPE_HARDWARE, LAYER_TYPE_NONE, LAYER_TYPE_SOFTWARE, LAYOUT_DIRECTION_INHERIT, LAYOUT_DIRECTION_LOCALE, LAYOUT_DIRECTION_LTR, LAYOUT_DIRECTION_RTL, mBottom, mCachingFailed, mContext, mCurrentAnimation, MEASURED_HEIGHT_STATE_SHIFT, MEASURED_SIZE_MASK, MEASURED_STATE_MASK, MEASURED_STATE_TOO_SMALL, mInputEventConsistencyVerifier, mLayoutParams, mLeft, mPaddingBottom, mPaddingLeft, mPaddingRight, mPaddingTop, mParent, mRight, mScrollX, mScrollY, mTag, mTop, mUserPaddingBottom, mUserPaddingLeft, mUserPaddingRight, NO_ID, OVER_SCROLL_ALWAYS, OVER_SCROLL_IF_CONTENT_SCROLLS, OVER_SCROLL_NEVER, PRESSED_ENABLED_FOCUSED_SELECTED_STATE_SET, PRESSED_ENABLED_FOCUSED_SELECTED_WINDOW_FOCUSED_STATE_SET, PRESSED_ENABLED_FOCUSED_STATE_SET, PRESSED_ENABLED_FOCUSED_WINDOW_FOCUSED_STATE_SET, PRESSED_ENABLED_SELECTED_STATE_SET, PRESSED_ENABLED_SELECTED_WINDOW_FOCUSED_STATE_SET, PRESSED_ENABLED_STATE_SET, PRESSED_ENABLED_WINDOW_FOCUSED_STATE_SET, PRESSED_FOCUSED_SELECTED_STATE_SET, PRESSED_FOCUSED_SELECTED_WINDOW_FOCUSED_STATE_SET, PRESSED_FOCUSED_STATE_SET, PRESSED_FOCUSED_WINDOW_FOCUSED_STATE_SET, PRESSED_SELECTED_STATE_SET, PRESSED_SELECTED_WINDOW_FOCUSED_STATE_SET, PRESSED_STATE_SET, PRESSED_WINDOW_FOCUSED_STATE_SET, PUBLIC_STATUS_BAR_VISIBILITY_MASK, ROTATION, ROTATION_X, ROTATION_Y, SCALE_X, SCALE_Y, SCREEN_STATE_OFF, SCREEN_STATE_ON, SCROLLBAR_POSITION_DEFAULT, SCROLLBAR_POSITION_LEFT, SCROLLBAR_POSITION_RIGHT, SCROLLBARS_INSIDE_INSET, SCROLLBARS_INSIDE_OVERLAY, SCROLLBARS_OUTSIDE_INSET, SCROLLBARS_OUTSIDE_OVERLAY, SELECTED_STATE_SET, SELECTED_WINDOW_FOCUSED_STATE_SET, SOUND_EFFECTS_ENABLED, STATUS_BAR_DISABLE_BACK, STATUS_BAR_DISABLE_CLOCK, STATUS_BAR_DISABLE_EXPAND, STATUS_BAR_DISABLE_HOME, STATUS_BAR_DISABLE_NOTIFICATION_ALERTS, STATUS_BAR_DISABLE_NOTIFICATION_ICONS, STATUS_BAR_DISABLE_NOTIFICATION_TICKER, STATUS_BAR_DISABLE_RECENT, STATUS_BAR_DISABLE_SEARCH, STATUS_BAR_DISABLE_SYSTEM_INFO, STATUS_BAR_HIDDEN, STATUS_BAR_VISIBLE, SYSTEM_UI_CLEARABLE_FLAGS, SYSTEM_UI_FLAG_FULLSCREEN, SYSTEM_UI_FLAG_HIDE_NAVIGATION, SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN, SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION, SYSTEM_UI_FLAG_LAYOUT_STABLE, SYSTEM_UI_FLAG_LOW_PROFILE, SYSTEM_UI_FLAG_VISIBLE, SYSTEM_UI_LAYOUT_FLAGS, TEXT_ALIGNMENT_CENTER, TEXT_ALIGNMENT_GRAVITY, TEXT_ALIGNMENT_INHERIT, TEXT_ALIGNMENT_TEXT_END, TEXT_ALIGNMENT_TEXT_START, TEXT_ALIGNMENT_VIEW_END, TEXT_ALIGNMENT_VIEW_START, TEXT_DIRECTION_ANY_RTL, TEXT_DIRECTION_FIRST_STRONG, TEXT_DIRECTION_INHERIT, TEXT_DIRECTION_LOCALE, TEXT_DIRECTION_LTR, TEXT_DIRECTION_RTL, TRANSLATION_X, TRANSLATION_Y, VIEW_LOG_TAG, VISIBLE, WINDOW_FOCUSED_STATE_SET, X, Y

Constructor Summary

Constructors
Constructor and Description
`GridLayout(Context context)`
`GridLayout(Context context, AttributeSet attrs)`
`GridLayout(Context context, AttributeSet attrs, int defStyle)`

Method Summary

Methods
Modifier and Type	Method and Description
`protected boolean`	`checkLayoutParams(ViewGroup.LayoutParams p)`
`protected GridLayout.LayoutParams`	`generateDefaultLayoutParams()` Returns a set of default layout parameters.
`GridLayout.LayoutParams`	`generateLayoutParams(AttributeSet attrs)` Returns a new set of layout parameters based on the supplied attributes set.
`protected GridLayout.LayoutParams`	`generateLayoutParams(ViewGroup.LayoutParams p)` Returns a safe set of layout parameters based on the supplied layout params.
`int`	`getAlignmentMode()` Returns the alignment mode.
`int`	`getColumnCount()` Returns the current number of columns.
`int`	`getOrientation()` Returns the current orientation.
`int`	`getRowCount()` Returns the current number of rows.
`boolean`	`getUseDefaultMargins()` Returns whether or not this GridLayout will allocate default margins when no corresponding layout parameters are defined.
`boolean`	`isColumnOrderPreserved()` Returns whether or not column boundaries are ordered by their grid indices.
`boolean`	`isRowOrderPreserved()` Returns whether or not row boundaries are ordered by their grid indices.
`protected void`	`onChildVisibilityChanged(View child, int oldVisibility, int newVisibility)` We need to call invalidateStructure() when a child's GONE flag changes state.
`protected void`	`onDebugDraw(Canvas canvas)`
`protected void`	`onDebugDrawMargins(Canvas canvas)`
`void`	`onInitializeAccessibilityEvent(AccessibilityEvent event)` Initializes an `AccessibilityEvent` with information about this View which is the event source.
`void`	`onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info)` Initializes an `AccessibilityNodeInfo` with information about this view.
`protected void`	`onLayout(boolean changed, int left, int top, int right, int bottom)` Called from layout when this view should assign a size and position to each of its children.
`protected void`	`onMeasure(int widthSpec, int heightSpec)` Measure the view and its content to determine the measured width and the measured height.
`protected void`	`onSetLayoutParams(View child, ViewGroup.LayoutParams layoutParams)`
`protected void`	`onViewAdded(View child)`
`protected void`	`onViewRemoved(View child)`
`void`	`requestLayout()` Call this when something has changed which has invalidated the layout of this view.
`void`	`setAlignmentMode(int alignmentMode)` Sets the alignment mode to be used for all of the alignments between the children of this container.
`void`	`setColumnCount(int columnCount)` ColumnCount is used only to generate default column/column indices when they are not specified by a component's layout parameters.
`void`	`setColumnOrderPreserved(boolean columnOrderPreserved)` When this property is `true`, GridLayout is forced to place the column boundaries so that their associated grid indices are in ascending order in the view.
`void`	`setOrientation(int orientation)` GridLayout uses the orientation property for two purposes: To control the 'direction' in which default row/column indices are generated when they are not specified in a component's layout parameters.
`void`	`setRowCount(int rowCount)` RowCount is used only to generate default row/column indices when they are not specified by a component's layout parameters.
`void`	`setRowOrderPreserved(boolean rowOrderPreserved)` When this property is `true`, GridLayout is forced to place the row boundaries so that their associated grid indices are in ascending order in the view.
`void`	`setUseDefaultMargins(boolean useDefaultMargins)` When `true`, GridLayout allocates default margins around children based on the child's visual characteristics.
`static GridLayout.Spec`	`spec(int start)` Return a Spec, `spec`, where: `spec.span = [start, start + 1]`
`static GridLayout.Spec`	`spec(int start, GridLayout.Alignment alignment)` Return a Spec, `spec`, where: `spec.span = [start, start + 1]` `spec.alignment = alignment`
`static GridLayout.Spec`	`spec(int start, int size)` Return a Spec, `spec`, where: `spec.span = [start, start + size]`
`static GridLayout.Spec`	`spec(int start, int size, GridLayout.Alignment alignment)` Return a Spec, `spec`, where: `spec.span = [start, start + size]` `spec.alignment = alignment`

Methods inherited from class android.view.ViewGroup
addChildrenForAccessibility, addFocusables, addStatesFromChildren, addTouchables, addView, addView, addView, addView, addView, addViewInLayout, addViewInLayout, attachLayoutAnimationParameters, attachViewToParent, bringChildToFront, canAnimate, childAccessibilityStateChanged, childDrawableStateChanged, childHasTransientStateChanged, cleanupLayoutState, clearChildFocus, clearDisappearingChildren, clearFocus, debug, detachAllViewsFromParent, detachViewFromParent, detachViewFromParent, detachViewsFromParent, dispatchConfigurationChanged, dispatchDisplayHint, dispatchDragEvent, dispatchDraw, dispatchFinishTemporaryDetach, dispatchFreezeSelfOnly, dispatchGenericFocusedEvent, dispatchGenericPointerEvent, dispatchGetDisplayList, dispatchHoverEvent, dispatchKeyEvent, dispatchKeyEventPreIme, dispatchKeyShortcutEvent, dispatchRestoreInstanceState, dispatchSaveInstanceState, dispatchSetActivated, dispatchSetPressed, dispatchSetSelected, dispatchStartTemporaryDetach, dispatchSystemUiVisibilityChanged, dispatchThawSelfOnly, dispatchTouchEvent, dispatchTrackballEvent, dispatchUnhandledMove, dispatchVisibilityChanged, dispatchWindowFocusChanged, dispatchWindowSystemUiVisiblityChanged, dispatchWindowVisibilityChanged, drawableStateChanged, drawChild, endViewTransition, findFocus, findViewByPredicateTraversal, findViewsWithText, findViewTraversal, findViewWithTagTraversal, fitSystemWindows, focusableViewAvailable, focusSearch, gatherTransparentRegion, getChildAt, getChildCount, getChildDrawingOrder, getChildMeasureSpec, getChildStaticTransformation, getChildVisibleRect, getDescendantFocusability, getFocusedChild, getLayoutAnimation, getLayoutAnimationListener, getLayoutMode, getLayoutTransition, getPersistentDrawingCache, hasFocus, hasFocusable, hasHoveredChild, hasTransientState, indexOfChild, internalSetPadding, invalidateChild, invalidateChildFast, invalidateChildInParent, isAlwaysDrawnWithCacheEnabled, isAnimationCacheEnabled, isChildrenDrawingOrderEnabled, isChildrenDrawnWithCacheEnabled, isMotionEventSplittingEnabled, isTransformedTouchPointInView, jumpDrawablesToCurrentState, layout, makeOptionalFitsSystemWindows, measureChild, measureChildren, measureChildWithMargins, offsetChildrenTopAndBottom, offsetDescendantRectToMyCoords, offsetRectIntoDescendantCoords, onAnimationEnd, onAnimationStart, onCreateDrawableState, onInterceptHoverEvent, onInterceptTouchEvent, onRequestFocusInDescendants, onRequestSendAccessibilityEvent, recomputeViewAttributes, removeAllViews, removeAllViewsInLayout, removeDetachedView, removeView, removeViewAt, removeViewInLayout, removeViews, removeViewsInLayout, requestChildFocus, requestChildRectangleOnScreen, requestDisallowInterceptTouchEvent, requestFocus, requestSendAccessibilityEvent, requestTransitionStart, requestTransparentRegion, resetAccessibilityStateChanged, resetResolvedDrawables, resetResolvedLayoutDirection, resetResolvedPadding, resetResolvedTextAlignment, resetResolvedTextDirection, resetRtlProperties, resolveDrawables, resolveLayoutDirection, resolveLayoutParams, resolvePadding, resolveRtlPropertiesIfNeeded, resolveTextAlignment, resolveTextDirection, scheduleLayoutAnimation, setAddStatesFromChildren, setAlwaysDrawnWithCacheEnabled, setAnimationCacheEnabled, setChildrenDrawingCacheEnabled, setChildrenDrawingOrderEnabled, setChildrenDrawnWithCacheEnabled, setClipChildren, setClipToPadding, setDescendantFocusability, setLayoutAnimation, setLayoutAnimationListener, setLayoutMode, setLayoutTransition, setMotionEventSplittingEnabled, setOnHierarchyChangeListener, setPersistentDrawingCache, setStaticTransformationsEnabled, shouldDelayChildPressedState, showContextMenuForChild, startActionModeForChild, startLayoutAnimation, startViewTransition, updateViewLayout

Methods inherited from class android.view.View
addFocusables, addOnAttachStateChangeListener, addOnLayoutChangeListener, animate, announceForAccessibility, applyDrawableToTransparentRegion, awakenScrollBars, awakenScrollBars, awakenScrollBars, bringToFront, buildDrawingCache, buildDrawingCache, buildLayer, callOnClick, cancelLongPress, canHaveDisplayList, canResolveLayoutDirection, canScrollHorizontally, canScrollVertically, checkInputConnectionProxy, clearAccessibilityFocus, clearAnimation, combineMeasuredStates, computeHorizontalScrollExtent, computeHorizontalScrollOffset, computeHorizontalScrollRange, computeOpaqueFlags, computeScroll, computeVerticalScrollExtent, computeVerticalScrollOffset, computeVerticalScrollRange, createAccessibilityNodeInfo, createContextMenu, debug, debugIndent, destroyDrawingCache, destroyHardwareResources, dispatchGenericMotionEvent, dispatchPointerEvent, dispatchPopulateAccessibilityEvent, draw, findViewById, findViewByPredicate, findViewByPredicateInsideOut, findViewWithTag, fitsSystemWindows, focusSearch, forceLayout, generateViewId, getAccessibilityCursorPosition, getAccessibilityDelegate, getAccessibilityNodeProvider, getAccessibilityViewId, getAccessibilityWindowId, getAlpha, getAnimation, getApplicationWindowToken, getBackground, getBaseline, getBottom, getBottomFadingEdgeStrength, getBottomPaddingOffset, getCameraDistance, getContentDescription, getContext, getContextMenuInfo, getDefaultSize, getDisplay, getDisplayList, getDrawableState, getDrawingCache, getDrawingCache, getDrawingCacheBackgroundColor, getDrawingCacheQuality, getDrawingRect, getDrawingTime, getFadeHeight, getFadeTop, getFilterTouchesWhenObscured, getFitsSystemWindows, getFocusables, getFocusedRect, getGlobalVisibleRect, getGlobalVisibleRect, getHandler, getHardwareRenderer, getHeight, getHitRect, getHorizontalFadingEdgeLength, getHorizontalScrollbarHeight, getHorizontalScrollFactor, getId, getImportantForAccessibility, getIterableTextForAccessibility, getIteratorForGranularity, getKeepScreenOn, getKeyDispatcherState, getLabelFor, getLayerType, getLayoutDirection, getLayoutParams, getLeft, getLeftFadingEdgeStrength, getLeftPaddingOffset, getLocalVisibleRect, getLocationInWindow, getLocationOnScreen, getMatrix, getMeasuredHeight, getMeasuredHeightAndState, getMeasuredState, getMeasuredWidth, getMeasuredWidthAndState, getMinimumHeight, getMinimumWidth, getNextFocusDownId, getNextFocusForwardId, getNextFocusLeftId, getNextFocusRightId, getNextFocusUpId, getOnFocusChangeListener, getOpticalInsets, getOverScrollMode, getPaddingBottom, getPaddingEnd, getPaddingLeft, getPaddingRight, getPaddingStart, getPaddingTop, getParent, getParentForAccessibility, getPivotX, getPivotY, getRawLayoutDirection, getRawTextAlignment, getRawTextDirection, getResources, getRight, getRightFadingEdgeStrength, getRightPaddingOffset, getRootView, getRotation, getRotationX, getRotationY, getScaleX, getScaleY, getScrollBarDefaultDelayBeforeFade, getScrollBarFadeDuration, getScrollBarSize, getScrollBarStyle, getScrollX, getScrollY, getSolidColor, getSuggestedMinimumHeight, getSuggestedMinimumWidth, getSystemUiVisibility, getTag, getTag, getTextAlignment, getTextDirection, getTop, getTopFadingEdgeStrength, getTopPaddingOffset, getTouchables, getTouchDelegate, getTranslationX, getTranslationY, getVerticalFadingEdgeLength, getVerticalScrollbarPosition, getVerticalScrollbarWidth, getVerticalScrollFactor, getViewRootImpl, getViewTreeObserver, getVisibility, getWidth, getWindowAttachCount, getWindowSystemUiVisibility, getWindowToken, getWindowVisibility, getWindowVisibleDisplayFrame, getX, getY, hackTurnOffWindowResizeAnim, hasOnClickListeners, hasOpaqueScrollbars, hasOverlappingRendering, hasWindowFocus, includeForAccessibility, inflate, initializeFadingEdge, initializeScrollbars, invalidate, invalidate, invalidate, invalidateDrawable, invalidateParentCaches, invalidateParentIfNeeded, isActionableForAccessibility, isActivated, isClickable, isDirty, isDrawingCacheEnabled, isDuplicateParentStateEnabled, isEnabled, isFocusable, isFocusableInTouchMode, isFocused, isHapticFeedbackEnabled, isHardwareAccelerated, isHorizontalFadingEdgeEnabled, isHorizontalScrollBarEnabled, isHovered, isImportantForAccessibility, isInEditMode, isInScrollingContainer, isInTouchMode, isLayoutDirectionInherited, isLayoutRequested, isLayoutRtl, isLongClickable, isOpaque, isPaddingOffsetRequired, isPaddingRelative, isPressed, isRootNamespace, isSaveEnabled, isSaveFromParentEnabled, isScrollbarFadingEnabled, isScrollContainer, isSelected, isShown, isSoundEffectsEnabled, isTextAlignmentInherited, isTextDirectionInherited, isVerticalFadingEdgeEnabled, isVerticalScrollBarEnabled, isVerticalScrollBarHidden, isVisibleToUser, isVisibleToUser, measure, mergeDrawableStates, notifyAccessibilityStateChanged, offsetLeftAndRight, offsetTopAndBottom, onAttachedToWindow, onCheckIsTextEditor, onCloseSystemDialogs, onConfigurationChanged, onCreateContextMenu, onCreateInputConnection, onDetachedFromWindow, onDisplayHint, onDragEvent, onDraw, onDrawHorizontalScrollBar, onDrawScrollBars, onDrawVerticalScrollBar, onFilterTouchEventForSecurity, onFinishInflate, onFinishTemporaryDetach, onFocusChanged, onFocusLost, onGenericMotionEvent, onHoverChanged, onHoverEvent, onKeyDown, onKeyLongPress, onKeyMultiple, onKeyPreIme, onKeyShortcut, onKeyUp, onOverScrolled, onPopulateAccessibilityEvent, onResolveDrawables, onRestoreInstanceState, onRtlPropertiesChanged, onSaveInstanceState, onScreenStateChanged, onScrollChanged, onSetAlpha, onSizeChanged, onStartTemporaryDetach, onTouchEvent, onTrackballEvent, onVisibilityChanged, onWindowFocusChanged, onWindowSystemUiVisibilityChanged, onWindowVisibilityChanged, outputDirtyFlags, overScrollBy, performAccessibilityAction, performButtonActionOnTouchDown, performClick, performHapticFeedback, performHapticFeedback, performLongClick, playSoundEffect, post, postDelayed, postInvalidate, postInvalidate, postInvalidateDelayed, postInvalidateDelayed, postInvalidateOnAnimation, postInvalidateOnAnimation, postOnAnimation, postOnAnimationDelayed, recomputePadding, refreshDrawableState, removeCallbacks, removeOnAttachStateChangeListener, removeOnLayoutChangeListener, requestAccessibilityFocus, requestFitSystemWindows, requestFocus, requestFocus, requestFocusFromTouch, requestRectangleOnScreen, requestRectangleOnScreen, resetPaddingToInitialValues, resolveSize, resolveSizeAndState, restoreHierarchyState, saveHierarchyState, scheduleDrawable, scrollBy, scrollTo, sendAccessibilityEvent, sendAccessibilityEventUnchecked, setAccessibilityCursorPosition, setAccessibilityDelegate, setActivated, setAlpha, setAnimation, setBackground, setBackgroundColor, setBackgroundDrawable, setBackgroundResource, setBottom, setCameraDistance, setClickable, setContentDescription, setDisabledSystemUiVisibility, setDrawingCacheBackgroundColor, setDrawingCacheEnabled, setDrawingCacheQuality, setDuplicateParentStateEnabled, setEnabled, setFadingEdgeLength, setFilterTouchesWhenObscured, setFitsSystemWindows, setFocusable, setFocusableInTouchMode, setFrame, setHapticFeedbackEnabled, setHasTransientState, setHorizontalFadingEdgeEnabled, setHorizontalScrollBarEnabled, setHovered, setId, setImportantForAccessibility, setIsRootNamespace, setKeepScreenOn, setLabelFor, setLayerPaint, setLayerType, setLayoutDirection, setLayoutInsets, setLayoutParams, setLeft, setLongClickable, setMeasuredDimension, setMinimumHeight, setMinimumWidth, setNextFocusDownId, setNextFocusForwardId, setNextFocusLeftId, setNextFocusRightId, setNextFocusUpId, setOnClickListener, setOnCreateContextMenuListener, setOnDragListener, setOnFocusChangeListener, setOnGenericMotionListener, setOnHoverListener, setOnKeyListener, setOnLongClickListener, setOnSystemUiVisibilityChangeListener, setOnTouchListener, setOverScrollMode, setPadding, setPaddingRelative, setPivotX, setPivotY, setPressed, setRight, setRotation, setRotationX, setRotationY, setSaveEnabled, setSaveFromParentEnabled, setScaleX, setScaleY, setScrollBarDefaultDelayBeforeFade, setScrollBarFadeDuration, setScrollbarFadingEnabled, setScrollBarSize, setScrollBarStyle, setScrollContainer, setScrollX, setScrollY, setSelected, setSoundEffectsEnabled, setSystemUiVisibility, setTag, setTag, setTagInternal, setTextAlignment, setTextDirection, setTop, setTouchDelegate, setTranslationX, setTranslationY, setVerticalFadingEdgeEnabled, setVerticalScrollBarEnabled, setVerticalScrollbarPosition, setVisibility, setWillNotCacheDrawing, setWillNotDraw, setX, setY, showContextMenu, showContextMenu, startActionMode, startAnimation, startDrag, toString, unscheduleDrawable, unscheduleDrawable, verifyDrawable, willNotCacheDrawing, willNotDraw

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface android.view.ViewParent
createContextMenu, getParent, getParentForAccessibility, isLayoutRequested, requestFitSystemWindows

- Field Detail
  - HORIZONTAL
```
public static final int HORIZONTAL
```
    The horizontal orientation.
    
    See Also:
    Constant Field Values
  - VERTICAL
```
public static final int VERTICAL
```
    The vertical orientation.
    
    See Also:
    Constant Field Values
  - UNDEFINED
```
public static final int UNDEFINED
```
    The constant used to indicate that a value is undefined. Fields can use this value to indicate that their values have not yet been set. Similarly, methods can return this value to indicate that there is no suitable value that the implementation can return. The value used for the constant (currently Integer.MIN_VALUE) is intended to avoid confusion between valid values whose sign may not be known.
    
    See Also:
    Constant Field Values
  - ALIGN_BOUNDS
```
public static final int ALIGN_BOUNDS
```
    This constant is an alignmentMode. When the alignmentMode is set to ALIGN_BOUNDS, alignment is made between the edges of each component's raw view boundary: i.e. the area delimited by the component's: top, left, bottom and right properties.
    For example, when GridLayout is in ALIGN_BOUNDS mode, children that belong to a row group that uses TOP alignment will all return the same value when their View.getTop() method is called.
    
    See Also:
    setAlignmentMode(int), Constant Field Values
  - ALIGN_MARGINS
```
public static final int ALIGN_MARGINS
```
    This constant is an alignmentMode. When the alignmentMode is set to ALIGN_MARGINS, the bounds of each view are extended outwards, according to their margins, before the edges of the resulting rectangle are aligned.
    For example, when GridLayout is in ALIGN_MARGINS mode, the quantity top - layoutParams.topMargin is the same for all children that belong to a row group that uses TOP alignment.
    
    See Also:
    setAlignmentMode(int), Constant Field Values
  - TOP
```
public static final GridLayout.Alignment TOP
```
    Indicates that a view should be aligned with the top edges of the other views in its cell group.
  - BOTTOM
```
public static final GridLayout.Alignment BOTTOM
```
    Indicates that a view should be aligned with the bottom edges of the other views in its cell group.
  - START
```
public static final GridLayout.Alignment START
```
    Indicates that a view should be aligned with the start edges of the other views in its cell group.
  - END
```
public static final GridLayout.Alignment END
```
    Indicates that a view should be aligned with the end edges of the other views in its cell group.
  - LEFT
```
public static final GridLayout.Alignment LEFT
```
    Indicates that a view should be aligned with the left edges of the other views in its cell group.
  - RIGHT
```
public static final GridLayout.Alignment RIGHT
```
    Indicates that a view should be aligned with the right edges of the other views in its cell group.
  - CENTER
```
public static final GridLayout.Alignment CENTER
```
    Indicates that a view should be centered with the other views in its cell group. This constant may be used in both rowSpecs and columnSpecs.
  - BASELINE
```
public static final GridLayout.Alignment BASELINE
```
    Indicates that a view should be aligned with the baselines of the other views in its cell group. This constant may only be used as an alignment in rowSpecs.
    
    See Also:
    View.getBaseline()
  - FILL
```
public static final GridLayout.Alignment FILL
```
    Indicates that a view should expanded to fit the boundaries of its cell group. This constant may be used in both rowSpecs and columnSpecs.
- Constructor Detail
  - GridLayout
```
public GridLayout(Context context,
          AttributeSet attrs,
          int defStyle)
```
  - GridLayout
```
public GridLayout(Context context,
          AttributeSet attrs)
```
  - GridLayout
```
public GridLayout(Context context)
```
- Method Detail
  - getOrientation
```
public int getOrientation()
```
    Returns the current orientation.
    
    Returns:
    either HORIZONTAL or VERTICAL
    See Also:
    setOrientation(int)
  - setOrientation
```
public void setOrientation(int orientation)
```
    GridLayout uses the orientation property for two purposes:
    - To control the 'direction' in which default row/column indices are generated when they are not specified in a component's layout parameters.
    - To control which axis should be processed first during the layout operation: when orientation is HORIZONTAL the horizontal axis is laid out first.
    The order in which axes are laid out is important if, for example, the height of one of GridLayout's children is dependent on its width - and its width is, in turn, dependent on the widths of other components.
    If your layout contains a TextView (or derivative: Button, EditText, CheckBox, etc.) which is in multi-line mode (the default) it is normally best to leave GridLayout's orientation as HORIZONTAL - because TextView is capable of deriving its height for a given width, but not the other way around.
    Other than the effects above, orientation does not affect the actual layout operation of GridLayout, so it's fine to leave GridLayout in HORIZONTAL mode even if the height of the intended layout greatly exceeds its width.
    The default value of this property is HORIZONTAL.
    Parameters:
    orientation - either HORIZONTAL or VERTICAL
    See Also:
    getOrientation()
  - getRowCount
```
public int getRowCount()
```
    Returns the current number of rows. This is either the last value that was set with setRowCount(int) or, if no such value was set, the maximum value of each the upper bounds defined in GridLayout.LayoutParams.rowSpec.
    
    Returns:
    the current number of rows
    See Also:
    setRowCount(int), GridLayout.LayoutParams.rowSpec
  - setRowCount
```
public void setRowCount(int rowCount)
```
    RowCount is used only to generate default row/column indices when they are not specified by a component's layout parameters.
    
    Parameters:
    rowCount - the number of rows
    See Also:
    getRowCount(), GridLayout.LayoutParams.rowSpec
  - getColumnCount
```
public int getColumnCount()
```
    Returns the current number of columns. This is either the last value that was set with setColumnCount(int) or, if no such value was set, the maximum value of each the upper bounds defined in GridLayout.LayoutParams.columnSpec.
    
    Returns:
    the current number of columns
    See Also:
    setColumnCount(int), GridLayout.LayoutParams.columnSpec
  - setColumnCount
```
public void setColumnCount(int columnCount)
```
    ColumnCount is used only to generate default column/column indices when they are not specified by a component's layout parameters.
    
    Parameters:
    columnCount - the number of columns.
    See Also:
    getColumnCount(), GridLayout.LayoutParams.columnSpec
  - getUseDefaultMargins
```
public boolean getUseDefaultMargins()
```
    Returns whether or not this GridLayout will allocate default margins when no corresponding layout parameters are defined.
    
    Returns:
    true if default margins should be allocated
    See Also:
    setUseDefaultMargins(boolean)
  - setUseDefaultMargins
```
public void setUseDefaultMargins(boolean useDefaultMargins)
```
    When true, GridLayout allocates default margins around children based on the child's visual characteristics. Each of the margins so defined may be independently overridden by an assignment to the appropriate layout parameter.
    When false, the default value of all margins is zero.
    When setting to true, consider setting the value of the alignmentMode property to ALIGN_BOUNDS.
    The default value of this property is false.
    
    Parameters:
    useDefaultMargins - use true to make GridLayout allocate default margins
    See Also:
    getUseDefaultMargins(), setAlignmentMode(int), MarginLayoutParams#leftMargin, MarginLayoutParams#topMargin, MarginLayoutParams#rightMargin, MarginLayoutParams#bottomMargin
  - getAlignmentMode
```
public int getAlignmentMode()
```
    Returns the alignment mode.
    
    Returns:
    the alignment mode; either ALIGN_BOUNDS or ALIGN_MARGINS
    See Also:
    ALIGN_BOUNDS, ALIGN_MARGINS, setAlignmentMode(int)
  - setAlignmentMode
```
public void setAlignmentMode(int alignmentMode)
```
    Sets the alignment mode to be used for all of the alignments between the children of this container.
    The default value of this property is ALIGN_MARGINS.
    
    Parameters:
    alignmentMode - either ALIGN_BOUNDS or ALIGN_MARGINS
    See Also:
    ALIGN_BOUNDS, ALIGN_MARGINS, getAlignmentMode()
  - isRowOrderPreserved
```
public boolean isRowOrderPreserved()
```
    Returns whether or not row boundaries are ordered by their grid indices.
    
    Returns:
    true if row boundaries must appear in the order of their indices, false otherwise
    See Also:
    setRowOrderPreserved(boolean)
  - setRowOrderPreserved
```
public void setRowOrderPreserved(boolean rowOrderPreserved)
```
    When this property is true, GridLayout is forced to place the row boundaries so that their associated grid indices are in ascending order in the view.
    When this property is false GridLayout is at liberty to place the vertical row boundaries in whatever order best fits the given constraints.
    The default value of this property is true.
    
    Parameters:
    rowOrderPreserved - true to force GridLayout to respect the order of row boundaries
    See Also:
    isRowOrderPreserved()
  - isColumnOrderPreserved
```
public boolean isColumnOrderPreserved()
```
    Returns whether or not column boundaries are ordered by their grid indices.
    
    Returns:
    true if column boundaries must appear in the order of their indices, false otherwise
    See Also:
    setColumnOrderPreserved(boolean)
  - setColumnOrderPreserved
```
public void setColumnOrderPreserved(boolean columnOrderPreserved)
```
    When this property is true, GridLayout is forced to place the column boundaries so that their associated grid indices are in ascending order in the view.
    When this property is false GridLayout is at liberty to place the horizontal column boundaries in whatever order best fits the given constraints.
    The default value of this property is true.
    
    Parameters:
    columnOrderPreserved - use true to force GridLayout to respect the order of column boundaries.
    See Also:
    isColumnOrderPreserved()
  - onSetLayoutParams
```
protected void onSetLayoutParams(View child,
                     ViewGroup.LayoutParams layoutParams)
```
    Overrides:
    
    onSetLayoutParams in class ViewGroup
  - checkLayoutParams
```
protected boolean checkLayoutParams(ViewGroup.LayoutParams p)
```
    Description copied from class: ViewGroup
    
    Overrides:
    
    checkLayoutParams in class ViewGroup
  - generateDefaultLayoutParams
```
protected GridLayout.LayoutParams generateDefaultLayoutParams()
```
    Description copied from class: ViewGroup
    
    Returns a set of default layout parameters. These parameters are requested when the View passed to ViewGroup.addView(View) has no layout parameters already set. If null is returned, an exception is thrown from addView.
    
    Overrides:
    
    generateDefaultLayoutParams in class ViewGroup
    
    Returns:
    a set of default layout parameters or null
  - generateLayoutParams
```
public GridLayout.LayoutParams generateLayoutParams(AttributeSet attrs)
```
    Description copied from class: ViewGroup
    
    Returns a new set of layout parameters based on the supplied attributes set.
    
    Overrides:
    
    generateLayoutParams in class ViewGroup
    
    Parameters:
    attrs - the attributes to build the layout parameters from
    
    Returns:
    an instance of ViewGroup.LayoutParams or one of its descendants
  - generateLayoutParams
```
protected GridLayout.LayoutParams generateLayoutParams(ViewGroup.LayoutParams p)
```
    Description copied from class: ViewGroup
    
    Returns a safe set of layout parameters based on the supplied layout params. When a ViewGroup is passed a View whose layout params do not pass the test of ViewGroup.checkLayoutParams(android.view.ViewGroup.LayoutParams), this method is invoked. This method should return a new set of layout params suitable for this ViewGroup, possibly by copying the appropriate attributes from the specified set of layout params.
    
    Overrides:
    
    generateLayoutParams in class ViewGroup
    
    Parameters:
    p - The layout parameters to convert into a suitable set of layout parameters for this ViewGroup.
    
    Returns:
    an instance of ViewGroup.LayoutParams or one of its descendants
  - onDebugDrawMargins
```
protected void onDebugDrawMargins(Canvas canvas)
```
    Overrides:
    
    onDebugDrawMargins in class ViewGroup
  - onDebugDraw
```
protected void onDebugDraw(Canvas canvas)
```
    Overrides:
    
    onDebugDraw in class ViewGroup
  - onViewAdded
```
protected void onViewAdded(View child)
```
    Overrides:
    
    onViewAdded in class ViewGroup
  - onViewRemoved
```
protected void onViewRemoved(View child)
```
    Overrides:
    
    onViewRemoved in class ViewGroup
  - onChildVisibilityChanged
```
protected void onChildVisibilityChanged(View child,
                            int oldVisibility,
                            int newVisibility)
```
    We need to call invalidateStructure() when a child's GONE flag changes state. This implementation is a catch-all, invalidating on any change in the visibility flags.
    
    Overrides:
    
    onChildVisibilityChanged in class ViewGroup
    
    Parameters:
    child - The view whose visibility has changed
    oldVisibility - The previous visibility value (GONE, INVISIBLE, or VISIBLE).
    newVisibility - The new visibility value (GONE, INVISIBLE, or VISIBLE).
  - onMeasure
```
protected void onMeasure(int widthSpec,
             int heightSpec)
```
    Description copied from class: View
    
    Measure the view and its content to determine the measured width and the measured height. This method is invoked by View.measure(int, int) and should be overriden by subclasses to provide accurate and efficient measurement of their contents.
    
    CONTRACT: When overriding this method, you must call View.setMeasuredDimension(int, int) to store the measured width and height of this view. Failure to do so will trigger an IllegalStateException, thrown by View.measure(int, int). Calling the superclass' View.onMeasure(int, int) is a valid use.
    
    The base class implementation of measure defaults to the background size, unless a larger size is allowed by the MeasureSpec. Subclasses should override View.onMeasure(int, int) to provide better measurements of their content.
    
    If this method is overridden, it is the subclass's responsibility to make sure the measured height and width are at least the view's minimum height and width (View.getSuggestedMinimumHeight() and View.getSuggestedMinimumWidth()).
    
    Overrides:
    
    onMeasure in class View
    
    Parameters:
    widthSpec - horizontal space requirements as imposed by the parent. The requirements are encoded with View.MeasureSpec.
    heightSpec - vertical space requirements as imposed by the parent. The requirements are encoded with View.MeasureSpec.
    See Also:
    View.getMeasuredWidth(), View.getMeasuredHeight(), View.setMeasuredDimension(int, int), View.getSuggestedMinimumHeight(), View.getSuggestedMinimumWidth(), View.MeasureSpec.getMode(int), View.MeasureSpec.getSize(int)
  - requestLayout
```
public void requestLayout()
```
    Description copied from class: View
    
    Call this when something has changed which has invalidated the layout of this view. This will schedule a layout pass of the view tree.
    
    Specified by:
    
    requestLayout in interface ViewParent
    
    Overrides:
    
    requestLayout in class View
  - onLayout
```
protected void onLayout(boolean changed,
            int left,
            int top,
            int right,
            int bottom)
```
    Called from layout when this view should assign a size and position to each of its children. Derived classes with children should override this method and call layout on each of their children.
    
    Specified by:
    
    onLayout in class ViewGroup
    
    Parameters:
    changed - This is a new size or position for this view
    left - Left position, relative to parent
    top - Top position, relative to parent
    right - Right position, relative to parent
    bottom - Bottom position, relative to parent
  - onInitializeAccessibilityEvent
```
public void onInitializeAccessibilityEvent(AccessibilityEvent event)
```
    Description copied from class: View
    Initializes an AccessibilityEvent with information about this View which is the event source. In other words, the source of an accessibility event is the view whose state change triggered firing the event.
    Example: Setting the password property of an event in addition to properties set by the super implementation:
```
 public void onInitializeAccessibilityEvent(AccessibilityEvent event) {
     super.onInitializeAccessibilityEvent(event);
     event.setPassword(true);
 }
```
    If an View.AccessibilityDelegate has been specified via calling View.setAccessibilityDelegate(AccessibilityDelegate) its View.AccessibilityDelegate.onInitializeAccessibilityEvent(View, AccessibilityEvent) is responsible for handling this call.
    
    Note: Always call the super implementation before adding information to the event, in case the default implementation has basic information to add.
    Overrides:
    
    onInitializeAccessibilityEvent in class View
    
    Parameters:
    event - The event to initialize.
    See Also:
    View.sendAccessibilityEvent(int), View.dispatchPopulateAccessibilityEvent(AccessibilityEvent)
  - onInitializeAccessibilityNodeInfo
```
public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info)
```
    Description copied from class: View
    Initializes an AccessibilityNodeInfo with information about this view. The base implementation sets:
    Subclasses should override this method, call the super implementation, and set additional attributes.
    
    If an View.AccessibilityDelegate has been specified via calling View.setAccessibilityDelegate(AccessibilityDelegate) its View.AccessibilityDelegate.onInitializeAccessibilityNodeInfo(View, AccessibilityNodeInfo) is responsible for handling this call.
    Overrides:
    
    onInitializeAccessibilityNodeInfo in class View
    
    Parameters:
    info - The instance to initialize.
  - spec
```
public static GridLayout.Spec spec(int start,
                   int size,
                   GridLayout.Alignment alignment)
```
    Return a Spec, spec, where:
    - spec.span = [start, start + size]
    - spec.alignment = alignment
    Parameters:
    start - the start
    size - the size
    alignment - the alignment
  - spec
```
public static GridLayout.Spec spec(int start,
                   GridLayout.Alignment alignment)
```
    Return a Spec, spec, where:
    - spec.span = [start, start + 1]
    - spec.alignment = alignment
    Parameters:
    start - the start index
    alignment - the alignment
  - spec
```
public static GridLayout.Spec spec(int start,
                   int size)
```
    Return a Spec, spec, where:
    - spec.span = [start, start + size]
    Parameters:
    start - the start
    size - the size
  - spec
```
public static GridLayout.Spec spec(int start)
```
    Return a Spec, spec, where:
    - spec.span = [start, start + 1]
    Parameters:
    start - the start index

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GridLayout

Class GridLayout

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getOrientation

setOrientation

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