Android 8.0一下热点启动

最近需要实现热点的自动，但是各种方式之后只能实现Android 8.0以下的稳定实现；

/**
 * 自动开启热点工具，仅对Android 8以下有效
 * <p>
 * 需要以下权限才能正常使用
 * <uses-permission android:name="android.permission.ACCESS_WIFI_STATE"/>
 * <uses-permission android:name="android.permission.CHANGE_WIFI_STATE"/>
 * <uses-permission android:name="android.permission.WRITE_SETTINGS"/>
 *
 * @author jiangjunjie01
 * Date： 2022/3/18
 */
public class HotPointHelper {
    /**
     * 开启便携热点
     */
    public static boolean openAp(Context context) {
        if (context == null) {
            return false;
        }
        if (isApOn(context)) {
            return false;
        }
        if (!checkPermission(context)) {
            return false;
        }
        WifiManager wifimanager = (WifiManager) context.getApplicationContext().getSystemService(Context.WIFI_SERVICE);
        if (wifimanager == null) {
            return false;
        }
        //开启热点需要关闭wifi
        if (wifimanager.isWifiEnabled()) {
            wifimanager.setWifiEnabled(false);
        }
        //需要设置一个自定义热点，不能直接使用 new WifiConfiguration() ，必须有配置信息
        WifiConfiguration wifiConfiguration = createConfig("1", "1");
        //使用反射开启Wi-Fi热点
        Method method;
        try {
            method = wifimanager.getClass().getMethod("setWifiApEnabled", WifiConfiguration.class, Boolean.TYPE);
            method.invoke(wifimanager, wifiConfiguration, true);
            return true;
        } catch (Exception e) {
            e.printStackTrace();
        }
        return false;
    }

    /**
     * 检查是否允许修改系统设置，需要 WRITE_SETTINGS 权限，无权限则跳转设置页面
     */
    private static boolean checkPermission(Context context) {
        //安卓6以上的特殊处理
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
            if (!Settings.System.canWrite(context)) {
                context.startActivity(new Intent(Settings.ACTION_MANAGE_WRITE_SETTINGS));
                return false;
            }
        }
        return true;
    }

    /**
     * 检测是否打开了热点
     */
    private static boolean isApOn(Context context) {
        WifiManager wifimanager = (WifiManager) context.getApplicationContext().getSystemService(WIFI_SERVICE);
        if (wifimanager != null) {
            Method method = null;
            try {
                method = wifimanager.getClass().getDeclaredMethod("isWifiApEnabled");
                method.setAccessible(true);
                return (boolean) method.invoke(wifimanager);
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
        return false;
    }

    /**
     * 关闭便携热点
     */
    private static void closeAp(Application context) {
        try {
            WifiManager wifimanager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
            Method method = wifimanager.getClass().getMethod("setWifiApEnabled", WifiConfiguration.class, Boolean.TYPE);
            method.invoke(wifimanager, null, false);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    /**
     * 设置有密码的热点信息
     */
    private static WifiConfiguration createConfig(String SSID, String pwd) {
        if (TextUtils.isEmpty(pwd)) {
            return null;
        }
        WifiConfiguration config = new WifiConfiguration();
        config.SSID = SSID;
        config.preSharedKey = pwd;
        config.status = WifiConfiguration.Status.ENABLED;
        config.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.TKIP);
        config.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.CCMP);
        config.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.WPA_PSK);
        config.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.TKIP);
        config.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.CCMP);
        config.allowedProtocols.set(WifiConfiguration.Protocol.RSN);
        return config;
    }
}