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MainActivity如下:

package cc.test.testwakelock;import android.os.Bundle;import android.app.Activity;import android.content.Context;import android.content.Intent;/** * Demo描述: * 点亮屏幕和解开键盘锁完整示例 *  * 注意权限: * 
    * 
    * 
    *  * 测试方法: * 程序运行后,里面按下电源键即可. *  * 参考资料: * 1 http://code.eoe.cn/399/title/%E4%BD%BF%E7%94%A8WakeLock%E4%BD%BFAndroid%E5%BA%94%E7%94%A8%E7%A8%8B%E5%BA%8F%E4%BF%9D%E6%8C%81%E5%90%8E%E5%8F%B0%E5%94%A4%E9%86%92 * 2 http://bbs.csdn.net/topics/360073862 * 3 http://www.cnblogs.com/keyindex/articles/1819504.html * 4 http://www.cnblogs.com/stoic/archive/2011/11/01/2785220.html *   Thank you very much */public class MainActivity extends Activity {	private Context mContext;	@Override	protected void onCreate(Bundle savedInstanceState) {		super.onCreate(savedInstanceState);		setContentView(R.layout.main);		init();	}		private void init() {		mContext = this;		for (int i = 0; i < 20000; i++) {			for (int j = 0; j < 20000; j++) {				if (i == 19999 && j == 19999) {					Intent intent = new Intent(mContext,ScreenAndLockService.class);					startService(intent);				}			}		}	}		//终止服务	@Override	public void onBackPressed() {		super.onBackPressed();		Intent intent = new Intent(mContext,ScreenAndLockService.class);		stopService(intent);	}		//终止服务	@Override	protected void onDestroy() {		super.onDestroy();		Intent intent = new Intent(mContext,ScreenAndLockService.class);		stopService(intent);	}}

ScreenAndLockService如下:

package cc.test.testwakelock;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;/** * 注意方法: * WakeLock android.os.PowerManager.newWakeLock(int levelAndFlags, String tag) * 该方法第一个参数为flag,有几个不同的变量.请查阅官方API * 具体的需求,视情况而定 * */public class ScreenAndLockService extends Service {	// 键盘管理器	KeyguardManager mKeyguardManager;	// 键盘锁	private KeyguardLock mKeyguardLock;	// 电源管理器	private PowerManager mPowerManager;	// 唤醒锁	private PowerManager.WakeLock mWakeLock;	@Override	public IBinder onBind(Intent arg0) {		return null;	}	@Override	public void onCreate() {		super.onCreate();		System.out.println("----> 开启服务");		mPowerManager = (PowerManager) getSystemService(Context.POWER_SERVICE);		mKeyguardManager = (KeyguardManager) getSystemService(Context.KEYGUARD_SERVICE);			}	@Override	public void onStart(Intent intent, int startId) {		// 点亮亮屏		mWakeLock = mPowerManager.newWakeLock		(PowerManager.ACQUIRE_CAUSES_WAKEUP | PowerManager.SCREEN_DIM_WAKE_LOCK, "Tag");		mWakeLock.acquire();		// 初始化键盘锁		mKeyguardLock = mKeyguardManager.newKeyguardLock("");		// 键盘解锁		mKeyguardLock.disableKeyguard();	}	//一定要释放唤醒锁和恢复键盘	@Override	public void onDestroy() {		super.onDestroy();		if (mWakeLock != null) {			System.out.println("----> 终止服务,释放唤醒锁");			mWakeLock.release();			mWakeLock = null;		}		if (mKeyguardLock!=null) {			System.out.println("----> 终止服务,重新锁键盘");			mKeyguardLock.reenableKeyguard();		}	}}

main.xml如下:

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