ListView 的 state_activated、state_selected、state_pressed、state_focused 说明 [英] Explanation of state_activated, state_selected, state_pressed, state_focused for ListView

问题描述

任何人都可以解释(或指向一个解释的链接)ListView 项目的 state_activated、state_selected、state_pressed 和 state_focused 之间的区别吗?它们都是 ListViews 的有效状态吗?是否使用触摸或键盘是否重要?此链接似乎不再有效.

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 用于使用键盘/dpad/轨迹球/等.
• state_activated 在调用 View.setActivated(true) 时使用.这用于持久选择"(请参阅​​平板电脑上的设置以了解实例)
• state_pressed 在用户按下项目时使用通过触摸或键盘或鼠标
• state_focused 如果项目被标记为可聚焦并且它接收到通过键盘/dpad/轨迹球/等的用户聚焦.或者如果该项目在触摸模式下可聚焦
• 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

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