Android点亮屏幕和解锁完整示例

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: * <uses-permission android:name="android.permission.WAKE_LOCK"/> * <uses-permission android:name="android.permission.DEVICE_POWER"/> * <uses-permission android:name="android.permission.DISABLE_KEYGUARD"/> *  * 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;@Overrideprotected 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@Overridepublic void onBackPressed() {super.onBackPressed();Intent intent = new Intent(mContext,ScreenAndLockService.class);stopService(intent);}//终止服务@Overrideprotected 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;@Overridepublic IBinder onBind(Intent arg0) {return null;}@Overridepublic void onCreate() {super.onCreate();System.out.println("----> 开启服务");mPowerManager = (PowerManager) getSystemService(Context.POWER_SERVICE);mKeyguardManager = (KeyguardManager) getSystemService(Context.KEYGUARD_SERVICE);}@Overridepublic 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@Overridepublic 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:

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent"    >    <TextView        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="利用WakeLock点亮屏幕"        android:layout_centerInParent="true" /></RelativeLayout>

AndroidManifest.xml如下:

<?xml version="1.0" encoding="utf-8"?><manifest xmlns:android="http://schemas.android.com/apk/res/android"    package="cc.test.testwakelock"    android:versionCode="1"    android:versionName="1.0"    >    <uses-sdk        android:minSdkVersion="10"        android:targetSdkVersion="17" />          <uses-permission android:name="android.permission.WAKE_LOCK"/>      <uses-permission android:name="android.permission.DISABLE_KEYGUARD"/>      <uses-permission android:name="android.permission.DEVICE_POWER"/>          <application        android:allowBackup="true"        android:icon="@drawable/ic_launcher"        android:label="@string/app_name"        android:theme="@style/AppTheme" >        <activity            android:name="cc.test.testwakelock.MainActivity"            android:label="@string/app_name" >            <intent-filter>                <action android:name="android.intent.action.MAIN" />                <category android:name="android.intent.category.LAUNCHER" />            </intent-filter>        </activity>                <service android:name=".ScreenAndLockService"/>    </application></manifest>