Rexsee API介紹：Android屏幕鎖定，Keyguard函數與擴展源碼

Android鎖屏時會先調用onPause()；解鎖時調用onResume，讀入保存的應用程序的資源。若是運行程序時已經鎖屏，應用程序會先調用onCreate(),而後onResume(),再則onPause()。

取消鎖屏：

<uses-permission android:name="android.permission.DISABLE_KEYGUARD"/>
KeyguardManager mKeyGuardManager = (KeyguardManager)getSystemService(KEYGUARD_SERVICE);
KeyguardLock mLock = mKeyGuardManager.newKeyguardLock("本身Activity名字");
mLock.disableKeyguard();

也是至關的簡單了，但基於Rexsee的API，能夠經過一句話搞定。

1. 取消鎖屏：window.setTimeout('rexseeKeyguard.disable();alert(\'自動解鎖！\');',10000);

alert('請按電源鍵關屏再開屏看到鎖屏畫面，10秒後自動解鎖。')

2. 啓動鎖屏：rexseeKeyguard.reEnable();

以下是rexseeKeyguard.java源碼：

/* 
* Copyright (C) 2011 The Rexsee Open Source Project 
* 
* Licensed under the Rexsee License, Version 1.0 (the "License"); 
* you may not use this file except in compliance with the License. 
* You may obtain a copy of the License at 
* 
*      http://www.rexsee.com/CN/legal/license.html 
* 
* Unless required by applicable law or agreed to in writing, software 
* distributed under the License is distributed on an "AS IS" BASIS, 
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
* See the License for the specific language governing permissions and 
* limitations under the License. 
*/ 
 
package rexsee.core.alarm;  
 
import rexsee.core.browser.JavascriptInterface;  
import rexsee.core.browser.RexseeBrowser;  
import android.app.KeyguardManager;  
import android.app.KeyguardManager.KeyguardLock;  
import android.content.Context;  
 
public class RexseeKeyguard implements JavascriptInterface {  
 
       private static final String INTERFACE_NAME = "Keyguard";  
       @Override  
       public String getInterfaceName() {  
               return mBrowser.application.resources.prefix + INTERFACE_NAME;  
       }  
       @Override  
       public JavascriptInterface getInheritInterface(RexseeBrowser childBrowser) {  
               return this;  
       }  
       @Override  
       public JavascriptInterface getNewInterface(RexseeBrowser childBrowser) {  
               return new RexseeKeyguard(childBrowser);  
       }  
 
       private final Context mContext;  
       private final RexseeBrowser mBrowser;  
       private KeyguardLock mKeyguardLock = null;  
 
       public RexseeKeyguard(RexseeBrowser browser) {  
               mBrowser = browser;  
               mContext = browser.getContext();  
       }  
       public RexseeKeyguard(Context context) {  
               mBrowser = null;  
               mContext = context;  
       }  
 
       //JavaScript Interface  
 
       public void enable() {  
               /*  
               try {  
                       DevicePolicyManager dpm = (DevicePolicyManager) mContext.getSystemService(Context.DEVICE_POLICY_SERVICE);  
                       dpm.lockNow();  
               } catch (Exception e) {  
                       mBrowser.exception(getInterfaceName(), e);  
               }  
               */  
       }  
       public void reEnable() {  
               if (mKeyguardLock != null) {  
                       mKeyguardLock.reenableKeyguard();  
                       mKeyguardLock = null;  
               }  
       }  
       public void disable() {  
               KeyguardManager keyguardManager = (KeyguardManager) mContext.getSystemService(Context.KEYGUARD_SERVICE);  
               mKeyguardLock = keyguardManager.newKeyguardLock("");  
               mKeyguardLock.disableKeyguard();  
       }  
 
}

僅對Rexsee的源碼和函數事件作了整理，相關的demo或源碼解析能夠在Rexsee社區瞭解，目前Rexsee已提供了近2000個擴展，覆蓋Android原生功能超過90%，且所有開放： http://www.rexsee.com/