处理Android中的所有鼠标事件 [英] Handle all mouse events in Android

问题描述

好吧，问题很简单 - 我如何处理 android 2/3/4 中的左/右/中点击、滚轮和(！)悬停移动.

Well, the question is rather simple - how can i handle left/right/middle click, wheel and (!)hover move in android 2/3/4.

我一直在挖掘这个话题，发现以下内容

I've been digging on this topic and found the following

• 在 api 14 中，我们几乎可以用新奇的 MotionEvent 处理任何事情
• 从 api 12(仍然缺少蓝牙)(UPD OA 向后移植到 2.3.4)以来，我们还有 Open Accessory 似乎可以与 USB 鼠标配合使用
• 鼠标实际上在具有 ICS 和 Honeycomb 和 cyanogen 2.3.7 的平板电脑上运行良好，但就像在每个按钮上单击一下一样.我想知道有没有办法拦截鼠标消息.

请帮助我了解如何在每个版本的 android 中以最简单和正确的方式处理蓝牙和 USB 鼠标.或者说这是不可能的.

Help me please to understand how i can handle bluetooth and usb mouse in most simple and right way in each version of android. Or say its impossible.

UPD2:似乎只有 3.1+ 的 USB Host，而 USB Accessory 对这个任务没用

UPD2: seems like USB Host only in 3.1+, while USB Accessory useless for this task

推荐答案

这些是我的发现:

对于 API 级别 <9:

For Api Level < 9:

• 外部鼠标主按钮的处理方式与正常的手指触摸一样.似乎没有办法检测到鼠标.
• 辅助按钮通过带有 KeyEvent.KEYCODE_BACK 的 KeyEvent 分派.无法区分实际的返回"按下和辅助按钮按下.

• External mouse primary button is handled just as a normal finger touch. There seems to be no way to detect the mouse.
• Secondary button is dispatched trough a KeyEvent with KeyEvent.KEYCODE_BACK. No way to distinguish between actual "Back" presses and secondary button presses.

对于 API 级别 9+:

For Api Level 9+:

• 添加了一个新方法MotionEvent.getSource().我用这个来检测输入是否来自鼠标.
• 次要按钮仍通过带有 KeyEvent.KEYCODE_BACK 的 KeyEvent 调度.在某些设备上，KeyEvent.getSource() 返回 InputDevice.SOURCE_MOUSE，因此辅助按钮检测在某些情况下有效.

• A new method has been added MotionEvent.getSource(). I use this one to detect if input is from mouse.
• Secondary button is still dispatched through a KeyEvent with KeyEvent.KEYCODE_BACK. On some devices the KeyEvent.getSource() returns InputDevice.SOURCE_MOUSE, so secondary button detection works in some cases.

对于 API 级别 12+:

For Api Level 12+:

• OnGenericMotionListener 已添加.我用这个来检测 ACTION_HOVER_MOVE 的鼠标移动和 ACTION_SCROLL 的滚轮变化.

• OnGenericMotionListener has been added. I use this one to detect mouse moves with ACTION_HOVER_MOVE and wheel changes with ACTION_SCROLL.

对于 API 级别 14+:

For Api Level 14+:

• 新方法 MotionEvent.getButtonState().当 MotionEvent.getActionMasked() 为 ACTION_MOVE、ACTION_DOWN 或ACTION_UP.

• New method MotionEvent.getButtonState(). I track this one to distinguish if a primary, secondary, tertiary mouse button is pressed when the MotionEvent.getActionMasked() is ACTION_MOVE, ACTION_DOWN or ACTION_UP.

我没有研究过 Api 级别 15/16 或工具类型，因为我能够使用上述内容跟踪所有鼠标事件.如果有人有其他信息或者我错过了 15/16/tooltypes，那将会很有趣.

I haven't looked into Api Level 15/16 or the tool type, because I'm able to track all mouse events with what I described above. Would be interesting if anybody has additional information or if I' missing out with 15/16/tooltypes.

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