Android热点相关功能开发

本文中所用到的方法，在MT6582平台、API19测试可行，其它平台不一定可以，要具体测。

附一个MT6582源码的链接https://github.com/CM-Huawei/Source_MT6582。

下面我把我封装的热点管理类贴出来，可以实现热点相关的所有功能（除了设置最大允许连接数和一定时间无设备连接后关闭热点的功能），包括打开、关闭热点，设置热点名称、密码，禁用、解除禁用某个设备。

注：

1.HotspotClient类，在源码中放在android.net.wifi包下，所以新建android.net.wifi的包用来存放，否则可能会出问题；

2.这里面好几个方法我都是通过遍历WifiManager的所有方法获取的，因为我在直接获取的时候总会报NoSuchMethodException，不明白原因；

3.使用的时候，mWifiManager根据自己项目的实际情况不要忘记初始化就好。

import java.io.BufferedReader;import java.io.File;import java.io.FileReader;import java.lang.reflect.InvocationTargetException;import java.lang.reflect.Method;import java.util.ArrayList;import java.util.List;import android.util.Log;import android.net.wifi.HotspotClient;import android.net.wifi.WifiConfiguration;import android.net.wifi.WifiManager;public class HotspotManager {private static final String Tag = "HotspotManager";public static WifiManager mWifiManager;/** * 设置热点状态，会对应的打开或关闭WiFi *  * @param state *            要设置的状态 * @param ssid *            热点名称，can be null * @param pwd *            热点密码，can be null * @return 设置成功与否 */public static boolean setHotPotState(boolean state, String ssid, String pwd) {boolean isOpened = isHotPotTurnedOn();if (state == isOpened) {Log.i(Tag, "-> Set state is equal with hotpot state!");return false;}Log.i(Tag, "set hot pot state : " + state);try {WifiConfiguration apConfig = getHotPotConfig();// 通过反射调用设置热点Method method = WifiManager.class.getMethod("setWifiApEnabled", WifiConfiguration.class, boolean.class);mWifiManager.setWifiEnabled(!state);if (ssid != null) {apConfig.SSID = ssid;}if (pwd != null) {apConfig.preSharedKey = pwd;}return (boolean) method.invoke(mWifiManager, apConfig, state);} catch (Exception e) {Log.e(Tag, "Set hot pot " + state + " got exception : " + e.getLocalizedMessage());return false;}}/** * 热点是否打开 * @return */public static boolean isHotPotTurnedOn() {try {Method method = mWifiManager.getClass().getDeclaredMethod("isWifiApEnabled");// 调用getWifiApState() ，获取返回值return (boolean) method.invoke(mWifiManager);} catch (Exception e) {Log.i(Tag, "Get hot pot state exception -> " + e.getLocalizedMessage());return false;}}/** * 获取当前热点的配置参数 *  * @return */public static HotspotParam getHotPotParams() {try {HotspotParam param = new HotspotParam();WifiConfiguration config = getHotPotConfig();if (config.SSID != null && !config.SSID.equals("")) {param.hotspotSSID = new String(config.SSID);} else {config.SSID = "";}if (config.preSharedKey != null && !config.preSharedKey.equals("")) {param.hotspotPwd = new String(config.preSharedKey);} else {param.hotspotPwd = "";}param.encryptionType = config.allowedKeyManagement.get(4) ? 4 : 0;List<?> tmp = getHotspotClients();if (tmp != null && tmp.size() > 0) {param.connectedClientsNum = 0;param.blackListNum = 0;for (int i = 0; i < tmp.size(); i++) {HotspotClient client = (HotspotClient) tmp.get(i);Log.d(Tag, "Got hotspot client -> " + client.deviceAddress);if (!client.isBlocked) {if (param.connectedClients == null) {param.connectedClients = new String[tmp.size()];}param.connectedClients[param.connectedClientsNum] = new String(client.deviceAddress);param.connectedClientsNum++;} else {if (param.blackList == null) {param.blackList = new String[tmp.size()];}param.blackList[param.blackListNum] = new String(client.deviceAddress);param.blackListNum++;}}}return param;} catch (IllegalAccessException e) {Log.e(Tag, "getHotPotParams IllegalAccessException : " + e.getMessage());return null;} catch (NoSuchMethodException e) {Log.e(Tag, "getHotPotParams NoSuchMethodException : " + e.getMessage());return null;} catch (IllegalArgumentException e) {Log.e(Tag, "getHotPotParams IllegalArgumentException : " + e.getMessage());return null;} catch (InvocationTargetException e) {Log.e(Tag, "getHotPotParams InvocationTargetException : " + e.getMessage());return null;}}/** * 设置热点名称 *  * @param length *            名称长度 1-32bytes * @param ssid *            名称 */public static boolean setHotPotSSID(String ssid) {try {WifiConfiguration config = getHotPotConfig();String former = config.SSID;Log.i(Tag, "former ssid:" + former + " set ssid:" + ssid);config.SSID = ssid;Log.i(Tag, "pwd:" + config.preSharedKey);return setWifiApConfiguration(config);} catch (NoSuchMethodException e) {Log.e(Tag, "setHotPotSSID NoSuchMethodException : " + e.getLocalizedMessage());return false;} catch (IllegalAccessException e) {Log.e(Tag, "setHotPotSSID IllegalAccessException : " + e.getLocalizedMessage());return false;} catch (IllegalArgumentException e) {Log.e(Tag, "setHotPotSSID IllegalArgumentException : " + e.getLocalizedMessage());return false;} catch (InvocationTargetException e) {Log.e(Tag, "setHotPotSSID InvocationTargetException : " + e.getLocalizedMessage());return false;}}/** * 设置热点密码 *  * @param pwd * @return */public static boolean setHotPotPwd(String pwd) {try {WifiConfiguration config = getHotPotConfig();String former = config.preSharedKey;Log.d(Tag, "former pwd:" + former + " set pwd:" + pwd);config.preSharedKey = pwd;return setWifiApConfiguration(config);} catch (NoSuchMethodException e) {Log.e(Tag, "setHotPotPwd NoSuchMethodException : " + e.getLocalizedMessage());return false;} catch (IllegalAccessException e) {Log.e(Tag, "setHotPotPwd IllegalAccessException : " + e.getLocalizedMessage());return false;} catch (IllegalArgumentException e) {Log.e(Tag, "setHotPotPwd IllegalArgumentException : " + e.getLocalizedMessage());return false;} catch (InvocationTargetException e) {Log.e(Tag, "setHotPotPwd InvocationTargetException : " + e.getLocalizedMessage());return false;}}/** * 设置加密方式 *  * @param type *            0代表不加密，4代表WPA2_PSK * @return */public static boolean setHotPotEncryption(int type) {int tmp = 0;if (type == 0) {tmp = 0;} else {tmp = 4;}try {WifiConfiguration config = getHotPotConfig();int oldEnc = config.allowedKeyManagement.get(4) ? 4 : 0;Log.d(Tag, "former encryption:" + oldEnc + " set encryption:" + tmp);if (oldEnc == -1) {Log.e(Tag, "Unexpected here!!!加密方式只有两种选择,检查代码");oldEnc = 0;}if (oldEnc == tmp) {return true;}config.allowedKeyManagement.clear();config.allowedKeyManagement.set(tmp);if (tmp == 4) {config.allowedAuthAlgorithms.set(WifiConfiguration.AuthAlgorithm.OPEN); // WPA2_PSK} else {config.wepTxKeyIndex = 0;config.wepKeys[0] = "";}return setWifiApConfiguration(config);} catch (NoSuchMethodException e) {Log.e(Tag, "setHotPotEncryption NoSuchMethodException : " + e.getLocalizedMessage());return false;} catch (IllegalAccessException e) {Log.e(Tag, "setHotPotEncryption IllegalAccessException : " + e.getLocalizedMessage());return false;} catch (IllegalArgumentException e) {Log.e(Tag, "setHotPotEncryption IllegalArgumentException : " + e.getLocalizedMessage());return false;} catch (InvocationTargetException e) {Log.e(Tag,"setHotPotEncryption InvocationTargetException : " + e.getLocalizedMessage());return false;}}/** * 设置黑名单 * @param deviceAddr * @return */public static boolean blockClient(String deviceAddr) {try {// 获取当前连接的客户端List<?> list = getHotspotClients();if (list == null || (list != null && list.size() == 0)) {Log.e(Tag, "blockClient current connected clients is null!");return false;}// 通过反射获取设置黑名单方法Method method = null;Method[] methods = WifiManager.class.getMethods();for (Method method2 : methods) {if (method2.getName().equals("blockClient")) {method = method2;break;}}if (method == null) {Log.e(Tag, "blockClient cannot find blockClient method");return false;}for (int i = 0; i < list.size(); i++) {HotspotClient client = (HotspotClient) list.get(i);if (client.deviceAddress.equals(deviceAddr) && !client.isBlocked) {return (boolean) method.invoke(mWifiManager, client);}}return false;} catch (IllegalAccessException e) {Log.e(Tag, "blockClient exception : " + e.getLocalizedMessage());return false;} catch (IllegalArgumentException e) {Log.e(Tag, "blockClient exception : " + e.getLocalizedMessage());return false;} catch (InvocationTargetException e) {Log.e(Tag, "blockClient exception : " + e.getLocalizedMessage());return false;}}/** * 移出黑名单 * @param addr * @return */public static boolean unblockClient(String addr) {// 通过反射获取设置黑名单方法Method method = null;Method[] methods = WifiManager.class.getMethods();for (Method method2 : methods) {if (method2.getName().equals("unblockClient")) {method = method2;break;}}if (method == null) {Log.e(Tag, "unblockClient cannot find unblockClient method");return false;}Log.d(Tag, "unblock client -> " + addr);HotspotClient client = new HotspotClient(addr, true);try {return (boolean) method.invoke(mWifiManager, client);} catch (IllegalAccessException e) {Log.e(Tag, "unblockClient exception : " + e.getLocalizedMessage());return false;} catch (IllegalArgumentException e) {Log.e(Tag, "unblockClient exception : " + e.getLocalizedMessage());return false;} catch (InvocationTargetException e) {Log.e(Tag, "unblockClient exception : " + e.getLocalizedMessage());return false;}}/** * 设置热点配置 * @param config * @return */private static boolean setWifiApConfiguration(WifiConfiguration config)throws NoSuchMethodException, IllegalAccessException, IllegalArgumentException, InvocationTargetException {Method method = null;Method[] methods = WifiManager.class.getMethods();for (Method method2 : methods) {if (method2.getName().equals("setWifiApConfiguration")) {method = method2;break;}}if (method == null) {return false;}return (boolean) method.invoke(mWifiManager, config);}@SuppressWarnings("unused")private static ArrayList<String> getCurrentConnectedClients() {ArrayList<String> connected = null;try {File file = new File("/proc/net/arp");if (!file.exists()) {return null;}connected = new ArrayList<>();FileReader fr = new FileReader(file);BufferedReader reader = new BufferedReader(fr);String line = reader.readLine();while ((line = reader.readLine()) != null) {String[] tokens = line.split("[ ]+");if (tokens != null && tokens.length >= 4) {String flag = tokens[2];// 连接状态，这个也不准确String HWAddr = tokens[3];// 地址if (!HWAddr.equals("00:00:00:00:00:00")) {connected.add(HWAddr);Log.d(Tag, "地址：" + HWAddr + ",状态：" + flag);}}}reader.close();if (connected.size() > 0) {return connected;} elsereturn null;} catch (Exception e) {Log.e(Tag, "Get connected clients exception : " + e.getLocalizedMessage());return null;}}/** * 获取当前连接到热点的客户端 * @return */private static List<?> getHotspotClients()throws IllegalAccessException, IllegalArgumentException, InvocationTargetException {Method method = null;Method[] methods = WifiManager.class.getMethods();for (Method method2 : methods) {if (method2.getName().equals("getHotspotClients")) {method = method2;break;}}if (method == null) {return null;}return (List<?>) method.invoke(mWifiManager);}/** * 获取当前热点配置 * @return */private static WifiConfiguration getHotPotConfig()throws NoSuchMethodException, IllegalAccessException, IllegalArgumentException, InvocationTargetException {Method method = WifiManager.class.getDeclaredMethod("getWifiApConfiguration");method.setAccessible(true);WifiConfiguration config = (WifiConfiguration) method.invoke(mWifiManager);return config;}}

package android.net.wifi;import android.os.Parcel;import android.os.Parcelable;/** * A class representing a hotspot client * @hide */public class HotspotClient implements Parcelable {    /**     * The MAC address of the client     * @hide     * @internal     */    public String deviceAddress;    /**     * The flag indicates whether this client is blocked or not     * @hide     * @internal     */    public boolean isBlocked = false;    /**     * @hide     */    public HotspotClient(String address, boolean blocked) {        deviceAddress = address;        isBlocked = blocked;    }    /**     * @hide     */    public HotspotClient(HotspotClient source) {        if (source != null) {            deviceAddress = source.deviceAddress;            isBlocked = source.isBlocked;        }    }    /**     * @hide     */    public String toString() {        StringBuffer sbuf = new StringBuffer();        sbuf.append(" deviceAddress: ").append(deviceAddress);        sbuf.append('\n');        sbuf.append(" isBlocked: ").append(isBlocked);        sbuf.append("\n");        return sbuf.toString();    }    /** Implement the Parcelable interface {@hide} */    public int describeContents() {        return 0;    }    /** Implement the Parcelable interface {@hide} */    public void writeToParcel(Parcel dest, int flags) {        dest.writeString(deviceAddress);        dest.writeByte(isBlocked ? (byte)1 : (byte)0);    }    /** Implement the Parcelable interface {@hide} */    public static final Creator<HotspotClient> CREATOR =        new Creator<HotspotClient>() {            public HotspotClient createFromParcel(Parcel in) {                HotspotClient result = new HotspotClient(in.readString(), in.readByte() == 1 ? true : false);                return result;            }            public HotspotClient[] newArray(int size) {                return new HotspotClient[size];            }        };}

public class HotspotParam {public String hotspotSSID;// 密码最少8个字节最多32个字节public String hotspotPwd;// 加密方式public int encryptionType;// 最大连接数(1-8之间)public int maxClientsNum;// 已连接的数量public int connectedClientsNum;// 已连接的设备名称public String[] connectedClients;// 黑名单，最多设置10个public String[] blackList;// 黑名单数量public int blackListNum;/*--------------------------------------------------------------------------------*/}