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我正在寻找一种方法来让我的程序在屏幕因超时而关闭后使手机振动。我做了很多研究，并没有找到有效的方法。我已经查看了 PowerManager 类，更具体地说是 WakeLock 机制。从许多帖子的声音来看，我需要使用 WakeLock 类的 PARTIAL_WAKE_LOCK 变量。

PARTIAL_WAKE_LOCK - 确保 CPU 正在运行的唤醒锁。

但是，当屏幕关闭时，我无法让它振动手机。我知道我正确使用了 WakeLock，因为我可以让 SCREEN_DIM_WAKE_LOCK 工作。PARTIAL_WAKE_LOCK 是我要找的吗？

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2 回答 2

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 @Override

    public void onCreate() {

        super.onCreate();

        // REGISTER RECEIVER THAT HANDLES SCREEN ON AND SCREEN OFF LOGIC

        IntentFilter filter = new IntentFilter(Intent.ACTION_SCREEN_ON);

        filter.addAction(Intent.ACTION_SCREEN_OFF);

        BroadcastReceiver mReceiver = new ScreenReceiver();

        registerReceiver(mReceiver, filter);

    }



    @Override

    public void onStart(Intent intent, int startId) {

        boolean screenOn = intent.getBooleanExtra("screen_state", false);

        if (!screenOn) {

            // Get instance of Vibrator from current Context
            Vibrator v = (Vibrator) getSystemService(Context.VIBRATOR_SERVICE);
           // This example will cause the phone to vibrate "SOS" in Morse Code
           // In Morse Code, "s" = "dot-dot-dot", "o" = "dash-dash-dash"
           // There are pauses to separate dots/dashes, letters, and words
           // The following numbers represent millisecond lengths
            int dot = 200;      // Length of a Morse Code "dot" in milliseconds
           int dash = 500;     // Length of a Morse Code "dash" in milliseconds
            int short_gap = 200;    // Length of Gap Between dots/dashes
           int medium_gap = 500;   // Length of Gap Between Letters
           int long_gap = 1000;    // Length of Gap Between Words
            long[] pattern = {
             0,  // Start immediately
             dot, short_gap, dot, short_gap, dot,    // s
             medium_gap,
             dash, short_gap, dash, short_gap, dash, // o
            medium_gap,
            dot, short_gap, dot, short_gap, dot,    // s
           long_gap
           };

           // Only perform this pattern one time (-1 means "do not repeat")
          v.vibrate(pattern, -1);


        } else {

            // YOUR CODE

        }

    }

请注意，您必须将 uses-permission 行添加到您的 Manifest.xml 文件中，位于块之外。

<manifest xmlns:android="http://schemas.android.com/apk/res/android" package="...">
<uses-permission android:name="android.permission.VIBRATE"/>

注意：您还必须在真机上测试此代码，模拟器无法振动

于 2011-09-07T06:38:31.777 回答
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对我来说，解决方案是直接使用没有模式的振动，所以我不必使用 PowerManager 来唤醒锁定。

于 2013-08-23T09:41:30.137 回答