android:descendantFocusability 焦点 父控件与子控件焦点
16lz
2021-01-23
android:descendantFocusability 焦点 父控件与子控件焦点
android:descendantFocusability
Defines the relationship between the ViewGroup and its descendants when looking for a View to take focus.
Must be one of the following constant values.
Constant Value Description
beforeDescendants 0 The ViewGroup will get focus before any of its descendants.
afterDescendants 1 The ViewGroup will get focus only if none of its descendants want it.
blocksDescendants 2 The ViewGroup will block its descendants from receiving focus
android:descendantFocusability
Defines the relationship between the ViewGroup and its descendants when looking for a View to take focus.
Must be one of the following constant values.
Constant Value Description
beforeDescendants 0 The ViewGroup will get focus before any of its descendants.
afterDescendants 1 The ViewGroup will get focus only if none of its descendants want it.
blocksDescendants 2 The ViewGroup will block its descendants from receiving focus
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