state_activated，state_selected，STATE_ pressed，state_focused的解释的ListViewstate_selected、state_activate
谁能解释（或点我一个解释的链接）之间state_activated，state_selected，STATE_ pressed的差异，state_focused的ListView的项目？难道他们的列表视图的所有有效状态？不要紧，如果触摸或键盘正在使用？ 此链接似乎不再是有效的。
Can anyone explain (or point me to a link that explains) the difference between state_activated, state_selected, state_pressed, and state_focused for ListView items? Are they all valid states for ListViews? Does it matter if touch or a keyboard are being used? This link no longer seems to be valid.
非常感谢！
推荐答案
state_selected 是当一个项目使用的是被选择使用
键盘/ DPAD /轨迹球/等。
state_activated 时使用View.setActivated（真）被调用。本
用于持续性的选择（请参阅设置的平板电脑
例如）
STATE_ pressed 当用户为pressing该项目无论是用于
通过触摸或键盘或鼠标
state_focused 时，如果该项目被标记为可聚焦和接收
聚焦或者通过一个键盘/ DPAD /轨迹球/等的用户。或者，如果
该产品可聚焦在触摸模式
state_selected is used when an item is selected using a
keyboard/dpad/trackball/etc.
state_activated is used when View.setActivated(true) is called. This
is used for "persistent selection" (see Settings on tablet for
instance)
state_pressed is used when the user is pressing the item either
through touch or a keyboard or a mouse
state_focused is used if the item is marked focusable and it receives
focus either through the user of a keyboard/dpad/trackball/etc. or if
the item is focusable in touch mode
