public class FocusFinder
extends Object
| java.lang.Object | |
| ↳ | android.view.FocusFinder |
该算法用于从当前具有焦点的视图中查找给定方向上的下一个可聚焦视图。
Public methods |
|
|---|---|
View |
findNearestTouchable(ViewGroup root, int x, int y, int direction, int[] deltas) 查找指定视图的最近可触摸视图。 |
final View |
findNextFocus(ViewGroup root, View focused, int direction) 从目前关注的角度出发，找到下一个要关注根后代的视图。 |
View |
findNextFocusFromRect(ViewGroup root, Rect focusedRect, int direction) 找到下一个视图，以便在根的后代中关注焦点，从根的坐标中的特定矩形中搜索。 |
static FocusFinder |
getInstance() 获取此线程的焦点查找器。 |
Inherited methods |
|
|---|---|
 From class java.lang.Object
|
|
View findNearestTouchable (ViewGroup root, int x, int y, int direction, int[] deltas)
查找指定视图的最近可触摸视图。
| Parameters | |
|---|---|
root |
ViewGroup: The root of the tree in which to search |
x |
int: X coordinate from which to start the search |
y |
int: Y coordinate from which to start the search |
direction |
int: Direction to look |
deltas |
int: Offset from the
|
| Returns | |
|---|---|
View |
The nearest touchable view, or null if none exists. |
View findNextFocus (ViewGroup root, View focused, int direction)
从目前关注的角度出发，找到下一个要关注根后代的视图。
| Parameters | |
|---|---|
root |
ViewGroup: Contains focused. Cannot be null. |
focused |
View: Has focus now. |
direction |
int: Direction to look. |
| Returns | |
|---|---|
View |
The next focusable view, or null if none exists. |
View findNextFocusFromRect (ViewGroup root, Rect focusedRect, int direction)
找到下一个视图，以便在根的后代中关注焦点，从根的坐标中的特定矩形中搜索。
| Parameters | |
|---|---|
root |
ViewGroup: Contains focusedRect. Cannot be null. |
focusedRect |
Rect: The starting point of the search. |
direction |
int: Direction to look. |
| Returns | |
|---|---|
View |
The next focusable view, or null if none exists. |
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