android - 4次电源按钮按下调用功能

我已经创建了一种发送SMS并在函数callfunction();下调用的方法
当用户按下四次电源按钮时，我想调用该函数，这不要求应用程序处于启动状态。

最佳答案

尝试使用Power Manager

  PARTIAL_WAKE_LOCK

  在API级别1中添加
  整数PARTIAL_WAKE_LOCK
  唤醒锁定级别：确保CPU在运行；屏幕和键盘背光将被允许熄灭。

  如果用户按下电源按钮，则屏幕将关闭，但CPU将保持打开状态，直到所有部分唤醒锁都已释放。

  常数值：1（0x00000001）

例：

//Initialize the Power Manager
PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE);

 //Create a PARTIAL_WAKE_LOCK
 //This will keep the cpu running in the Background, so that the function will be called on the desired Time
 PowerManager.WakeLock wl = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "My Tag");

//Check if the WackLock is held (may throw erro if you try to acquire twice)
//TRUE --> Do nothing, all good
//FALSE --> Acquire the WakeLock
 if(!wl.isHeld()){
    wl.acquire();
 }

//*****
//You code to handel the Powerbutton comes here
//*****

//If the Repeating task is not active, release the Lock

//Check if the WackLock is held (may throw error if you try to release a none acquired Lock)
//TRUE --> Release Lock
//FALSE --> Do nothing, all good
 if(wl.isHeld()){
    wl.release();
 }

要处理电源按钮，请查看以下文章：
How to hook into the Power button in Android?

这只是一个假设，如果仍然不起作用，是否可以发布一些Logs或项目的更多代码片段:)