Android
android.view
public class

android.view.FocusFinder

java.lang.Object
android.view.FocusFinder

The algorithm used for finding the next focusable view in a given direction from a view that currently has focus.

Summary

Public Methods

          View  findNearestTouchable(ViewGroup root, int x, int y, int direction, int[] deltas)
Find the nearest touchable view to the specified view.
    final      View  findNextFocus(ViewGroup root, View focused, int direction)
Find the next view to take focus in root's descendants, starting from the view that currently is focused.
          View  findNextFocusFromRect(ViewGroup root, Rect focusedRect, int direction)
Find the next view to take focus in root's descendants, searching from a particular rectangle in root's coordinates.
      static    FocusFinder  getInstance()
Get the focus finder for this thread.
Methods inherited from class java.lang.Object

Details

Public Methods

public View findNearestTouchable(ViewGroup root, int x, int y, int direction, int[] deltas)

Find the nearest touchable view to the specified view.

Parameters

root The root of the tree in which to search
x X coordinate from which to start the search
y Y coordinate from which to start the search
direction Direction to look
deltas Offset from the to the edge of the nearest view. Note that this array may already be populated with values.

Returns

  • The nearest touchable view, or null if none exists.

public final View findNextFocus(ViewGroup root, View focused, int direction)

Find the next view to take focus in root's descendants, starting from the view that currently is focused.

Parameters

root Contains focused
focused Has focus now.
direction Direction to look.

Returns

  • The next focusable view, or null if none exists.

public View findNextFocusFromRect(ViewGroup root, Rect focusedRect, int direction)

Find the next view to take focus in root's descendants, searching from a particular rectangle in root's coordinates.

Parameters

root Contains focusedRect.
focusedRect The starting point of the search.
direction Direction to look.

Returns

  • The next focusable view, or null if none exists.

public static FocusFinder getInstance()

Get the focus finder for this thread.
Copyright 2007 Google Inc. Build 0.9_r1-98467 - 14 Aug 2008 18:48