Android 怎么在锁屏状态下获取按键事件？ - V2EX
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RichardY

Android 怎么在锁屏状态下获取按键事件？

  •   
  •   RichardY Dec 9, 2019 15532 views
    This topic created in 2331 days ago, the information mentioned may be changed or developed.
    我重写了 OnKeyDown，但只是在程序界面有效。我希望在锁屏状态下能够监听到按键并执行操作有没有办法？看到有的回答说要 root。如果 root 能行我也可以 root。
  • root
  • onkeydown
  • 按键
  • 重写
    7 replies    2019-12-13 09:47:52 +08:00
    iwtbauh
        1
    iwtbauh  
       Dec 9, 2019 via Android
    我只知道媒体按钮也可以在锁屏时捕获，只要你的应用是音频焦点

    root 后可以直接读 /dev/input/event*，按照 Linux 的方式读即可
    sx90
        2
    sx90  
       Dec 9, 2019
    自定义锁屏

    Android 锁屏，就是为了降低功耗，个人觉得设计程序不能违背初衷
    RichardY
        3
    RichardY  
    OP
       Dec 10, 2019 via Android
    @sx90 功耗其实如果我能监听按键的话不是问题。我的程序需要先由设备管理员事件触发，然后再监听按键。不是一直在监听。
    RichardY
        4
    RichardY  
    OP
       Dec 10, 2019
    @iwtbauh 音频焦点的意思是要播放音频吗？
    mmrx
        5
    mmrx  
       Dec 10, 2019
    @RichardY 我感觉 1#的意思可以参考云音乐或者 qq 音乐在锁屏后控制音乐播放的效果，播放音乐可以播放“无声”的音乐
    RichardY
        6
    RichardY  
    OP
       Dec 10, 2019
    @mmrx 那会干扰正在播放的音乐吧？
    mmrx
        7
    mmrx  
       Dec 13, 2019
    @RichardY 应该会的
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