IT. Expert System.

Android Reference

RelativeLayout

android.widget

Class RelativeLayout

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

All Implemented Interfaces:

Drawable.Callback, AccessibilityEventSource, KeyEvent.Callback, ViewManager, ViewParent

Direct Known Subclasses:

DialerFilter, TwoLineListItem
```
public class RelativeLayout
extends ViewGroup
```
A Layout where the positions of the children can be described in relation to each other or to the parent.
Note that you cannot have a circular dependency between the size of the RelativeLayout and the position of its children. For example, you cannot have a RelativeLayout whose height is set to WRAP_CONTENT and a child set to ALIGN_PARENT_BOTTOM.

See the Relative Layout guide.

Also see RelativeLayout.LayoutParams for layout attributes

Nested Class Summary

Nested Classes
Modifier and Type Class and Description

static class RelativeLayout.LayoutParams
Per-child layout information associated with RelativeLayout.
- 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

Nested Classes
Modifier and Type	Class and Description
`static class`	`RelativeLayout.LayoutParams` Per-child layout information associated with RelativeLayout.

Field Summary

Fields
Modifier and Type	Field and Description
`static int`	`ABOVE` Rule that aligns a child's bottom edge with another child's top edge.
`static int`	`ALIGN_BASELINE` Rule that aligns a child's baseline with another child's baseline.
`static int`	`ALIGN_BOTTOM` Rule that aligns a child's bottom edge with another child's bottom edge.
`static int`	`ALIGN_END` Rule that aligns a child's end edge with another child's end edge.
`static int`	`ALIGN_LEFT` Rule that aligns a child's left edge with another child's left edge.
`static int`	`ALIGN_PARENT_BOTTOM` Rule that aligns the child's bottom edge with its RelativeLayout parent's bottom edge.
`static int`	`ALIGN_PARENT_END` Rule that aligns the child's end edge with its RelativeLayout parent's end edge.
`static int`	`ALIGN_PARENT_LEFT` Rule that aligns the child's left edge with its RelativeLayout parent's left edge.
`static int`	`ALIGN_PARENT_RIGHT` Rule that aligns the child's right edge with its RelativeLayout parent's right edge.
`static int`	`ALIGN_PARENT_START` Rule that aligns the child's start edge with its RelativeLayout parent's start edge.
`static int`	`ALIGN_PARENT_TOP` Rule that aligns the child's top edge with its RelativeLayout parent's top edge.
`static int`	`ALIGN_RIGHT` Rule that aligns a child's right edge with another child's right edge.
`static int`	`ALIGN_START` Rule that aligns a child's start edge with another child's start edge.
`static int`	`ALIGN_TOP` Rule that aligns a child's top edge with another child's top edge.
`static int`	`BELOW` Rule that aligns a child's top edge with another child's bottom edge.
`static int`	`CENTER_HORIZONTAL` Rule that centers the child horizontally with respect to the bounds of its RelativeLayout parent.
`static int`	`CENTER_IN_PARENT` Rule that centers the child with respect to the bounds of its RelativeLayout parent.
`static int`	`CENTER_VERTICAL` Rule that centers the child vertically with respect to the bounds of its RelativeLayout parent.
`static int`	`END_OF` Rule that aligns a child's start edge with another child's end edge.
`static int`	`LEFT_OF` Rule that aligns a child's right edge with another child's left edge.
`static int`	`RIGHT_OF` Rule that aligns a child's left edge with another child's right edge.
`static int`	`START_OF` Rule that aligns a child's end edge with another child's start edge.
`static int`	`TRUE`

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
`RelativeLayout(Context context)`
`RelativeLayout(Context context, AttributeSet attrs)`
`RelativeLayout(Context context, AttributeSet attrs, int defStyle)`

Method Summary

Methods
Modifier and Type	Method and Description
`protected boolean`	`checkLayoutParams(ViewGroup.LayoutParams p)`
`boolean`	`dispatchPopulateAccessibilityEvent(AccessibilityEvent event)` Dispatches an `AccessibilityEvent` to the `View` first and then to its children for adding their text content to the event.
`protected ViewGroup.LayoutParams`	`generateDefaultLayoutParams()` Returns a set of layout parameters with a width of `ViewGroup.LayoutParams.WRAP_CONTENT`, a height of `ViewGroup.LayoutParams.WRAP_CONTENT` and no spanning.
`RelativeLayout.LayoutParams`	`generateLayoutParams(AttributeSet attrs)` Returns a new set of layout parameters based on the supplied attributes set.
`protected ViewGroup.LayoutParams`	`generateLayoutParams(ViewGroup.LayoutParams p)` Returns a safe set of layout parameters based on the supplied layout params.
`int`	`getBaseline()` Return the offset of the widget's text baseline from the widget's top boundary.
`int`	`getGravity()` Describes how the child views are positioned.
`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 l, int t, int r, int b)` Called from layout when this view should assign a size and position to each of its children.
`protected void`	`onMeasure(int widthMeasureSpec, int heightMeasureSpec)` Measure the view and its content to determine the measured width and the measured height.
`void`	`requestLayout()` Call this when something has changed which has invalidated the layout of this view.
`void`	`setGravity(int gravity)` Describes how the child views are positioned.
`void`	`setHorizontalGravity(int horizontalGravity)`
`void`	`setIgnoreGravity(int viewId)` Defines which View is ignored when the gravity is applied.
`void`	`setVerticalGravity(int verticalGravity)`
`boolean`	`shouldDelayChildPressedState()` Return true if the pressed state should be delayed for children or descendants of this ViewGroup.

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, onChildVisibilityChanged, onCreateDrawableState, onDebugDraw, onDebugDrawMargins, onInterceptHoverEvent, onInterceptTouchEvent, onRequestFocusInDescendants, onRequestSendAccessibilityEvent, onSetLayoutParams, onViewAdded, onViewRemoved, 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, 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, draw, findViewById, findViewByPredicate, findViewByPredicateInsideOut, findViewWithTag, fitsSystemWindows, focusSearch, forceLayout, generateViewId, getAccessibilityCursorPosition, getAccessibilityDelegate, getAccessibilityNodeProvider, getAccessibilityViewId, getAccessibilityWindowId, getAlpha, getAnimation, getApplicationWindowToken, getBackground, 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
  - TRUE
```
public static final int TRUE
```
    See Also:
    Constant Field Values
  - LEFT_OF
```
public static final int LEFT_OF
```
    Rule that aligns a child's right edge with another child's left edge.
    
    See Also:
    Constant Field Values
  - RIGHT_OF
```
public static final int RIGHT_OF
```
    Rule that aligns a child's left edge with another child's right edge.
    
    See Also:
    Constant Field Values
  - ABOVE
```
public static final int ABOVE
```
    Rule that aligns a child's bottom edge with another child's top edge.
    
    See Also:
    Constant Field Values
  - BELOW
```
public static final int BELOW
```
    Rule that aligns a child's top edge with another child's bottom edge.
    
    See Also:
    Constant Field Values
  - ALIGN_BASELINE
```
public static final int ALIGN_BASELINE
```
    Rule that aligns a child's baseline with another child's baseline.
    
    See Also:
    Constant Field Values
  - ALIGN_LEFT
```
public static final int ALIGN_LEFT
```
    Rule that aligns a child's left edge with another child's left edge.
    
    See Also:
    Constant Field Values
  - ALIGN_TOP
```
public static final int ALIGN_TOP
```
    Rule that aligns a child's top edge with another child's top edge.
    
    See Also:
    Constant Field Values
  - ALIGN_RIGHT
```
public static final int ALIGN_RIGHT
```
    Rule that aligns a child's right edge with another child's right edge.
    
    See Also:
    Constant Field Values
  - ALIGN_BOTTOM
```
public static final int ALIGN_BOTTOM
```
    Rule that aligns a child's bottom edge with another child's bottom edge.
    
    See Also:
    Constant Field Values
  - ALIGN_PARENT_LEFT
```
public static final int ALIGN_PARENT_LEFT
```
    Rule that aligns the child's left edge with its RelativeLayout parent's left edge.
    
    See Also:
    Constant Field Values
  - ALIGN_PARENT_TOP
```
public static final int ALIGN_PARENT_TOP
```
    Rule that aligns the child's top edge with its RelativeLayout parent's top edge.
    
    See Also:
    Constant Field Values
  - ALIGN_PARENT_RIGHT
```
public static final int ALIGN_PARENT_RIGHT
```
    Rule that aligns the child's right edge with its RelativeLayout parent's right edge.
    
    See Also:
    Constant Field Values
  - ALIGN_PARENT_BOTTOM
```
public static final int ALIGN_PARENT_BOTTOM
```
    Rule that aligns the child's bottom edge with its RelativeLayout parent's bottom edge.
    
    See Also:
    Constant Field Values
  - CENTER_IN_PARENT
```
public static final int CENTER_IN_PARENT
```
    Rule that centers the child with respect to the bounds of its RelativeLayout parent.
    
    See Also:
    Constant Field Values
  - CENTER_HORIZONTAL
```
public static final int CENTER_HORIZONTAL
```
    Rule that centers the child horizontally with respect to the bounds of its RelativeLayout parent.
    
    See Also:
    Constant Field Values
  - CENTER_VERTICAL
```
public static final int CENTER_VERTICAL
```
    Rule that centers the child vertically with respect to the bounds of its RelativeLayout parent.
    
    See Also:
    Constant Field Values
  - START_OF
```
public static final int START_OF
```
    Rule that aligns a child's end edge with another child's start edge.
    
    See Also:
    Constant Field Values
  - END_OF
```
public static final int END_OF
```
    Rule that aligns a child's start edge with another child's end edge.
    
    See Also:
    Constant Field Values
  - ALIGN_START
```
public static final int ALIGN_START
```
    Rule that aligns a child's start edge with another child's start edge.
    
    See Also:
    Constant Field Values
  - ALIGN_END
```
public static final int ALIGN_END
```
    Rule that aligns a child's end edge with another child's end edge.
    
    See Also:
    Constant Field Values
  - ALIGN_PARENT_START
```
public static final int ALIGN_PARENT_START
```
    Rule that aligns the child's start edge with its RelativeLayout parent's start edge.
    
    See Also:
    Constant Field Values
  - ALIGN_PARENT_END
```
public static final int ALIGN_PARENT_END
```
    Rule that aligns the child's end edge with its RelativeLayout parent's end edge.
    
    See Also:
    Constant Field Values
- Constructor Detail
  - RelativeLayout
```
public RelativeLayout(Context context)
```
  - RelativeLayout
```
public RelativeLayout(Context context,
              AttributeSet attrs)
```
  - RelativeLayout
```
public RelativeLayout(Context context,
              AttributeSet attrs,
              int defStyle)
```
- Method Detail
  - shouldDelayChildPressedState
```
public boolean shouldDelayChildPressedState()
```
    Description copied from class: ViewGroup
    
    Return true if the pressed state should be delayed for children or descendants of this ViewGroup. Generally, this should be done for containers that can scroll, such as a List. This prevents the pressed state from appearing when the user is actually trying to scroll the content. The default implementation returns true for compatibility reasons. Subclasses that do not scroll should generally override this method and return false.
    
    Overrides:
    
    shouldDelayChildPressedState in class ViewGroup
  - setIgnoreGravity
```
public void setIgnoreGravity(int viewId)
```
    Defines which View is ignored when the gravity is applied. This setting has no effect if the gravity is Gravity.START | Gravity.TOP.
    
    Parameters:
    viewId - The id of the View to be ignored by gravity, or 0 if no View should be ignored.
    See Also:
    setGravity(int)
  - getGravity
```
public int getGravity()
```
    Describes how the child views are positioned.
    
    Returns:
    the gravity.
    See Also:
    setGravity(int), Gravity
  - setGravity
```
public void setGravity(int gravity)
```
    Describes how the child views are positioned. Defaults to Gravity.START | Gravity.TOP.
    Note that since RelativeLayout considers the positioning of each child relative to one another to be significant, setting gravity will affect the positioning of all children as a single unit within the parent. This happens after children have been relatively positioned.
    
    Parameters:
    gravity - See Gravity
    See Also:
    setHorizontalGravity(int), setVerticalGravity(int)
  - setHorizontalGravity
```
public void setHorizontalGravity(int horizontalGravity)
```
  - setVerticalGravity
```
public void setVerticalGravity(int verticalGravity)
```
  - getBaseline
```
public int getBaseline()
```
    Description copied from class: View
    
    Return the offset of the widget's text baseline from the widget's top boundary. If this widget does not support baseline alignment, this method returns -1.
    
    Overrides:
    
    getBaseline in class View
    
    Returns:
    the offset of the baseline within the widget's bounds or -1 if baseline alignment is not supported
  - 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
  - onMeasure
```
protected void onMeasure(int widthMeasureSpec,
             int heightMeasureSpec)
```
    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:
    widthMeasureSpec - horizontal space requirements as imposed by the parent. The requirements are encoded with View.MeasureSpec.
    heightMeasureSpec - 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)
  - onLayout
```
protected void onLayout(boolean changed,
            int l,
            int t,
            int r,
            int b)
```
    Description copied from class: ViewGroup
    
    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
    l - Left position, relative to parent
    t - Top position, relative to parent
    r - Right position, relative to parent
    b - Bottom position, relative to parent
  - generateLayoutParams
```
public RelativeLayout.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
  - generateDefaultLayoutParams
```
protected ViewGroup.LayoutParams generateDefaultLayoutParams()
```
    Returns a set of layout parameters with a width of ViewGroup.LayoutParams.WRAP_CONTENT, a height of ViewGroup.LayoutParams.WRAP_CONTENT and no spanning.
    
    Overrides:
    
    generateDefaultLayoutParams in class ViewGroup
    
    Returns:
    a set of default layout parameters or null
  - checkLayoutParams
```
protected boolean checkLayoutParams(ViewGroup.LayoutParams p)
```
    Description copied from class: ViewGroup
    
    Overrides:
    
    checkLayoutParams in class ViewGroup
  - generateLayoutParams
```
protected ViewGroup.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
  - dispatchPopulateAccessibilityEvent
```
public boolean dispatchPopulateAccessibilityEvent(AccessibilityEvent event)
```
    Description copied from class: View
    
    Dispatches an AccessibilityEvent to the View first and then to its children for adding their text content to the event. Note that the event text is populated in a separate dispatch path since we add to the event not only the text of the source but also the text of all its descendants. A typical implementation will call View.onPopulateAccessibilityEvent(AccessibilityEvent) on the this view and then call the View.dispatchPopulateAccessibilityEvent(AccessibilityEvent) on each child. Override this method if custom population of the event text content is required.
    If an View.AccessibilityDelegate has been specified via calling View.setAccessibilityDelegate(AccessibilityDelegate) its View.AccessibilityDelegate.dispatchPopulateAccessibilityEvent(View, AccessibilityEvent) is responsible for handling this call.
    
    Note: Accessibility events of certain types are not dispatched for populating the event text via this method. For details refer to AccessibilityEvent.
    
    Overrides:
    
    dispatchPopulateAccessibilityEvent in class View
    
    Parameters:
    event - The event.
    
    Returns:
    True if the event population was completed.
  - 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.

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Android Reference

RelativeLayout

Class RelativeLayout

Nested Class Summary

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Nested classes/interfaces inherited from class android.view.View

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TRUE

LEFT_OF

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RelativeLayout

RelativeLayout

RelativeLayout

Method Detail

shouldDelayChildPressedState

setIgnoreGravity

getGravity

setGravity

setHorizontalGravity

setVerticalGravity

getBaseline

requestLayout

onMeasure

onLayout

generateLayoutParams

generateDefaultLayoutParams

checkLayoutParams

generateLayoutParams

dispatchPopulateAccessibilityEvent

onInitializeAccessibilityEvent

onInitializeAccessibilityNodeInfo

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