android 打开ap热点

在android上，实现打开ap热点功能，记录一下过程中遇到的问题；
package com.test;import android.content.Context;import android.net.wifi.WifiConfiguration;import android.net.wifi.WifiManager;import java.lang.reflect.Method;public class WifiUtils {    private WifiManager wifiManager = (WifiManager) ContextUtils.getApplicationContext().getSystemService(Context.WIFI_SERVICE);    private boolean isWifiEnabled() {        return wifiManager.isWifiEnabled();    }    /**     * 是否打开共享热点     */    private boolean isWifiApEnabled() {        try {            Method method = wifiManager.getClass().getMethod("isWifiApEnabled");            method.setAccessible(true);            return (Boolean) method.invoke(wifiManager);        } catch (Exception e) {            e.printStackTrace();        }        return false;    }    /**     * 是否打开指定共享热点：名称和密码     */    private boolean isWifiApEnabled(String ssid, String password) {        boolean ret = isWifiApEnabled();        if (!ret) {            return false;        }        WifiConfiguration wifiConfig = getWifiApConfiguration();        String apName = wifiConfig.SSID;        String apPassword = wifiConfig.preSharedKey;        // TODO 可能要注意引号等特殊字符        return ssid.equals(apName) && password.equals(apPassword);    }    /**     * 获取AP热点配置信息     */    private WifiConfiguration getWifiApConfiguration() {        try {            Method method = wifiManager.getClass().getMethod("getWifiApConfiguration");            method.setAccessible(true);            return (WifiConfiguration) method.invoke(wifiManager);        } catch (Exception e) {            e.printStackTrace();        }        return null;    }    private WifiConfiguration createWifiApConfiguration(String ssid, String password) {        WifiConfiguration wifiConfig = new WifiConfiguration();        wifiConfig.SSID = ssid;// 热点名称        wifiConfig.preSharedKey = password;// 热点密码        wifiConfig.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.WPA_PSK);        /**         * WPA2_PSK=4，比WPA安全性更高         * 在android 4.4 上设置，无效：Invalid WifiConfiguration         * 在android 6   上设置，有效         */        // wifiConfig.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.WPA2_PSK);        wifiConfig.allowedAuthAlgorithms.set(WifiConfiguration.AuthAlgorithm.OPEN);        wifiConfig.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.CCMP);        wifiConfig.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.CCMP);        wifiConfig.allowedProtocols.set(WifiConfiguration.Protocol.WPA);        return wifiConfig;    }    private boolean setWifiApConfiguration(WifiConfiguration wifiConfig) {        try {            Method method = wifiManager.getClass().getMethod("setWifiApConfiguration", WifiConfiguration.class);            return (Boolean) method.invoke(wifiManager, wifiConfig);        } catch (Exception e) {            e.printStackTrace();        }        return false;    }    private boolean setWifiApEnabled(WifiConfiguration wifiConfig, boolean enabled) {        try {            // TODO WifiManager.setWifiApEnabled()已经被废弃；在android 7以上，需要替换为ConnectivityManager.startTethering()            Method method = wifiManager.getClass().getMethod("setWifiApEnabled", WifiConfiguration.class, Boolean.TYPE);            return (Boolean) method.invoke(wifiManager, wifiConfig, enabled);        } catch (Exception e) {            e.printStackTrace();        }        return false;    }    /**     * 打开热点     */    public void openAp(String apSsid, String apPassword) {        if (isWifiApEnabled(apSsid, apPassword)) {            // 1.指定ap已经打开，名称和密码一致            return;        } else {            // 2.指定ap没有打开            // 2.1.关闭热点            if (isWifiEnabled()) {                wifiManager.setWifiEnabled(false);            }            // 【注意：如果已经打开ap热点，名称和密码不一致，则需要先关闭AP热点，重新设置AP配置，然后再次打开AP热点】            // 2.2.关闭ap热点            WifiConfiguration wifiConfig = createWifiApConfiguration(apSsid, apPassword);            if (isWifiApEnabled()) {                setWifiApEnabled(wifiConfig, false);            }            // 2.3.重新设置ap配置            setWifiApConfiguration(wifiConfig);            // 2.4.打开ap热点            setWifiApEnabled(wifiConfig, true);        }    }    public void closeAp(String apSsid, String apPassword) {        // TODO        WifiConfiguration wifiConfig = createWifiApConfiguration(apSsid, apPassword);        setWifiApEnabled(wifiConfig, false);    }    public void test() {        String apSsid = "test";        String apPassword = "12345678";        openAp(apSsid, apPassword);        closeAp(apSsid, apPassword);    }}
参考：
系统setting，Wifi模块WifiStateMachine.java
https://blog.csdn.net/bukker/article/details/78649504
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