屏幕解锁和点亮

import android.app.KeyguardManager;
import android.app.KeyguardManager.KeyguardLock;
import android.app.Service;
import android.content.Context;
import android.content.Intent;
import android.os.IBinder;
import android.os.PowerManager;
import android.util.Log;

public class ScreenService extends Service {

//声明键盘管理器
KeyguardManager mKeyguardManager = null;   
//声明键盘锁
private KeyguardLock mKeyguardLock = null;   
//声明电源管理器
private PowerManager pm;
private PowerManager.WakeLock wakeLock;

@Override   
public IBinder onBind(Intent arg0) {   
return null;   
}   
@Override   
public void onCreate() {   
//获取电源的服务
pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
//获取系统服务
mKeyguardManager = (KeyguardManager) getSystemService(Context.KEYGUARD_SERVICE);
super.onCreate();   
}   
@Override   
public void onStart(Intent intent, int startId){  
//点亮亮屏
wakeLock = pm.newWakeLock(PowerManager.ACQUIRE_CAUSES_WAKEUP | PowerManager.SCREEN_DIM_WAKE_LOCK, "My Tag");
wakeLock.acquire();
//初始化键盘锁，可以锁定或解开键盘锁
mKeyguardLock = mKeyguardManager.newKeyguardLock("");   
//禁用显示键盘锁定
mKeyguardLock.disableKeyguard();   
}
@Override
public void onDestroy() {
wakeLock.release();
super.onDestroy();
}   
}

记得需要在AndroidManifest文件中加入
<!-- 解锁的权限 -->
<uses-permission android:name="android.permission.DISABLE_KEYGUARD"></uses-permission>
<!-- 亮屏的权限 -->
<uses-permission android:name="android.permission.WAKE_LOCK"></uses-permission>