PowerManagerWakeLock.java

package com.joyplus.showkey.screensaver;
import android.content.Context;  
import android.os.PowerManager;  
import android.os.PowerManager.WakeLock;  
  
public class PowerManagerWakeLock {  
  
    private static WakeLock wakeLock;  
      
    /**���� ������Ļ����*/  
    public static void acquire(Context context) {  
        PowerManager pm = (PowerManager) context.getSystemService(Context.POWER_SERVICE);  
        wakeLock = pm.newWakeLock(PowerManager.SCREEN_BRIGHT_WAKE_LOCK|PowerManager.ON_AFTER_RELEASE, "PowerManagerWakeLock");  
        wakeLock.acquire();  
    }  
      
    /**�ر� ������Ļ����*/  
    public static void release() {         
        if (wakeLock != null) {  
            wakeLock.release();  
            wakeLock = null;  
        }  
    }  
}