File	Doc	Category	Size	Date	Package
ViewParent.java	API Doc	Android 1.5 API	7823	Wed May 06 22:41:56 BST 2009	android.view

ViewParent

Fields Summary

Constructors Summary

Methods Summary
public void	bringChildToFront(View child) Change the z order of the child so it's on top of all other children param child
public void	childDrawableStateChanged(View child) This method is called on the parent when a child's drawable state has changed. param child The child whose drawable state has changed.
public void	clearChildFocus(View child) Called when a child of this parent is giving up focus param child The view that is giving up focus
public void	createContextMenu(ContextMenu menu) Have the parent populate the specified context menu if it has anything to add (and then recurse on its parent). param menu The menu to populate
public View	focusSearch(View v, int direction) Find the nearest view in the specified direction that wants to take focus param v The view that currently has focus param direction One of FOCUS_UP, FOCUS_DOWN, FOCUS_LEFT, and FOCUS_RIGHT
public void	focusableViewAvailable(View v) Tells the parent that a new focusable view has become available. This is to handle transitions from the case where there are no focusable views to the case where the first focusable view appears. param v The view that has become newly focusable
public boolean	getChildVisibleRect(View child, android.graphics.Rect r, android.graphics.Point offset)
public android.view.ViewParent	getParent() Returns the parent if it exists, or null. return a ViewParent or null if this ViewParent does not have a parent
public void	invalidateChild(View child, android.graphics.Rect r) All or part of a child is dirty and needs to be redrawn. param child The child which is dirty param r The area within the child that is invalid
public android.view.ViewParent	invalidateChildInParent(int[] location, android.graphics.Rect r) All or part of a child is dirty and needs to be redrawn. The location array is an array of two int values which respectively define the left and the top position of the dirty child. This method must return the parent of this ViewParent if the specified rectangle must be invalidated in the parent. If the specified rectangle does not require invalidation in the parent or if the parent does not exist, this method must return null. When this method returns a non-null value, the location array must have been updated with the left and top coordinates of this ViewParent. param location An array of 2 ints containing the left and top coordinates of the child to invalidate param r The area within the child that is invalid return the parent of this ViewParent or null
public boolean	isLayoutRequested() Indicates whether layout was requested on this view parent. return true if layout was requested, false otherwise
public void	recomputeViewAttributes(View child) Tell view hierarchy that the global view attributes need to be re-evaluated. param child View whose attributes have changed.
public void	requestChildFocus(View child, View focused) Called when a child of this parent wants focus param child The child of this ViewParent that wants focus. This view will contain the focused view. It is not necessarily the view that actually has focus. param focused The view that is a descendant of child that actually has focus
public boolean	requestChildRectangleOnScreen(View child, android.graphics.Rect rectangle, boolean immediate) Called when a child of this group wants a particular rectangle to be positioned onto the screen. {@link ViewGroup}s overriding this can trust that: child will be a direct child of this group rectangle will be in the child's coordinates {@link ViewGroup}s overriding this should uphold the contract: nothing will change if the rectangle is already visible the view port will be scrolled only just enough to make the rectangle visible param child The direct child making the request. param rectangle The rectangle in the child's coordinates the child wishes to be on the screen. param immediate True to forbid animated or delayed scrolling, false otherwise return Whether the group scrolled to handle the operation
public void	requestDisallowInterceptTouchEvent(boolean disallowIntercept) Called when a child does not want this parent and its ancestors to intercept touch events with {@link ViewGroup#onInterceptTouchEvent(MotionEvent)}. This parent should pass this call onto its parents. This parent must obey this request for the duration of the touch (that is, only clear the flag after this parent has received an up or a cancel. param disallowIntercept True if the child does not want the parent to intercept touch events.
public void	requestLayout() Called when something has changed which has invalidated the layout of a child of this view parent. This will schedule a layout pass of the view tree.
public void	requestTransparentRegion(View child) Called when a child wants the view hierarchy to gather and report transparent regions to the window compositor. Views that "punch" holes in the view hierarchy, such as SurfaceView can use this API to improve performance of the system. When no such a view is present in the hierarchy, this optimization in unnecessary and might slightly reduce the view hierarchy performance. param child the view requesting the transparent region computation
public boolean	showContextMenuForChild(View originalView) Bring up a context menu for the specified view or its ancestors. In most cases, a subclass does not need to override this. However, if the subclass is added directly to the window manager (for example, {@link ViewManager#addView(View, android.view.ViewGroup.LayoutParams)}) then it should override this and show the context menu. param originalView The source view where the context menu was first invoked return true if a context menu was displayed