Android打开WIFI或者移动网络的代码实现

package wy.testnetwork;        import java.lang.reflect.Field;    import java.lang.reflect.InvocationTargetException;    import java.lang.reflect.Method;    import android.net.ConnectivityManager;    import android.net.wifi.WifiManager;    import android.os.Bundle;    import android.app.Activity;    import android.content.Context;    /**    * Demo描述:    * 通过代码打开wifi或者移动网络    *     * 学习资料:    * 1 http://blog.csdn.net/way_ping_li/article/details/8493700    * 2 http://stackoverflow.com/questions/12535101/how-can-i-turn-off-3g-data-programmatically-on-android    * 3 http://www.cnblogs.com/willyan/archive/2012/07/03/2574513.html    * 4 http://ask.csdn.net/questions/152    * 5 http://blog.csdn.net/lfdfhl/article/details/10311505    * 6 http://blog.csdn.net/tu_bingbing/article/details/8469871    * 7 http://blog.csdn.net/stevenhu_223/article/details/9052083    *   Thank you very much    *       * 备注说明:    * 1 在学习资料1中还涉及到利用代码打开GPS    * 2 通过代码打开wifi和移动网络在某些机型上是不可实现的    *    */    public class MainActivity extends Activity {        @Override        protected void onCreate(Bundle savedInstanceState) {            super.onCreate(savedInstanceState);            setContentView(R.layout.main);            toggleWiFi(this, false);            toggleMobileData(this, true);        }                     //设置是否打开Wifi        private void toggleWiFi(Context context, boolean enabled) {            WifiManager wifiManager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);            wifiManager.setWifiEnabled(enabled);        }                /**        * 设置是否打开移动网络        *         * 但没有直接的API可调用,但是我们发现:        * 在ConnectivityManager中有一隐藏的方法setMobileDataEnabled()        * 源码如下:        * public void setMobileDataEnabled(boolean enabled) {        *   try {        *      mService.setMobileDataEnabled(enabled);        *   } catch (RemoteException e) {        *      }        * }        *         * 这里的重点就是mService,查看其声明:        * private IConnectivityManager mService;        * 继续查看源码可知IConnectivityManager为了一个AIDL(接口interface IConnectivityManager)        *         *         * 调用过程:        * ConnectivityManager中有一隐藏的方法setMobileDataEnabled()        * 在setMobileDataEnabled()中调用了IConnectivityManager中的setMobileDataEnabled(boolean)        *         * 所以我们首先需要反射出ConnectivityManager类的成员变量mService(IConnectivityManager类型)        */        private void toggleMobileData(Context context, boolean enabled) {              ConnectivityManager connectivityManager =             (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);                        //ConnectivityManager类              Class<?> connectivityManagerClass = null;            //ConnectivityManager类中的字段              Field connectivityManagerField = null;                                    //IConnectivityManager接口            Class<?> iConnectivityManagerClass = null;            //IConnectivityManager接口的对象            Object iConnectivityManagerObject = null;            //IConnectivityManager接口的对象的方法            Method setMobileDataEnabledMethod = null;                        try {                //取得ConnectivityManager类                connectivityManagerClass = Class.forName(connectivityManager.getClass().getName());                //取得ConnectivityManager类中的字段mService                connectivityManagerField = connectivityManagerClass.getDeclaredField("mService");                //取消访问私有字段的合法性检查                 //该方法来自java.lang.reflect.AccessibleObject                connectivityManagerField.setAccessible(true);                                                //实例化mService                //该get()方法来自java.lang.reflect.Field                //一定要注意该get()方法的参数:                //它是mService所属类的对象                //完整例子请参见:                //http://blog.csdn.net/lfdfhl/article/details/13509839                iConnectivityManagerObject = connectivityManagerField.get(connectivityManager);                //得到mService所属接口的Class                iConnectivityManagerClass = Class.forName(iConnectivityManagerObject.getClass().getName());                //取得IConnectivityManager接口中的setMobileDataEnabled(boolean)方法                //该方法来自java.lang.Class.getDeclaredMethod                setMobileDataEnabledMethod =                 iConnectivityManagerClass.getDeclaredMethod("setMobileDataEnabled", Boolean.TYPE);                //取消访问私有方法的合法性检查                 //该方法来自java.lang.reflect.AccessibleObject                setMobileDataEnabledMethod.setAccessible(true);                //调用setMobileDataEnabled方法                setMobileDataEnabledMethod.invoke(iConnectivityManagerObject,enabled);            } catch (ClassNotFoundException e) {                   e.printStackTrace();              } catch (NoSuchFieldException e) {                   e.printStackTrace();              } catch (SecurityException e) {                   e.printStackTrace();              } catch (NoSuchMethodException e) {                   e.printStackTrace();              } catch (IllegalArgumentException e) {                   e.printStackTrace();              } catch (IllegalAccessException e) {                   e.printStackTrace();              } catch (InvocationTargetException e) {                   e.printStackTrace();              }         }            }

<?xml version="1.0" encoding="utf-8"?>    <manifest xmlns:android="http://schemas.android.com/apk/res/android"        package="wy.testnetwork"        android:versionCode="1"        android:versionName="1.0" >            <uses-sdk            android:minSdkVersion="10"            android:targetSdkVersion="10" />                <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />        <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />        <uses-permission android:name="android.permission.CHANGE_NETWORK_STATE" />        <uses-permission android:name="android.permission.CHANGE_WIFI_STATE" />            <application            android:allowBackup="true"            android:icon="@drawable/ic_launcher"            android:label="@string/app_name"            android:theme="@style/AppTheme" >            <activity                android:name="wy.testnetwork.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>        </application>        </manifest>

<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"        tools:context=".MainActivity" >            <TextView            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:text="通过代码打开wifi或者移动网络"             android:layout_centerHorizontal="true"            android:layout_marginTop="50dip"        />        </RelativeLayout>