最近遇到的需求是将 wifi 热点相关信息展示给用户，于是，有三处功能需要实现：

  1. 判断是否开启了热点
  2. 获取 SSID
  3. 获取 PSK

以下是工具类的全部代码：

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import android.content.Context;
import android.net.wifi.WifiConfiguration;
import android.net.wifi.WifiManager;
import android.util.Log;

import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;

public class WifiApUtil {

    private static final String TAG = "qll_wifiaputils";

    /**
     * 返回 SSID
     * @param context 调用上下文
     * @return
     * */
    public static String getSsid(Context context) {
        String ssid = "";

        WifiManager wifiManager = (WifiManager) context
                .getApplicationContext().getSystemService(Context.WIFI_SERVICE);
        try {
            Method getWifiApConfiguration = wifiManager.getClass().getMethod("getWifiApConfiguration");
            getWifiApConfiguration.setAccessible(true);
            WifiConfiguration configuration = (WifiConfiguration) getWifiApConfiguration.invoke(wifiManager);
            ssid = configuration.SSID;
        } catch (NoSuchMethodException e) {
            Log.e(TAG, "getSsid: 没有这个方法" + e.toString() );
        } catch (IllegalAccessException e) {
            Log.e(TAG, "getSsid: 没有权限" + e.toString() );
        } catch (InvocationTargetException e) {
            Log.e(TAG, "getSsid: 调用目标出错----" + e.toString() );
        }
        return ssid;
    }

    /**
     * 返回 preSharedKey
     * @param context 调用上下文
     * @return
     * */
    public static String getPsk(Context context) {
        String psk = "";

        WifiManager wifiManager = (WifiManager) context
                .getApplicationContext().getSystemService(Context.WIFI_SERVICE);
        try {
            Method getWifiApConfiguration = wifiManager.getClass().getMethod("getWifiApConfiguration");
            getWifiApConfiguration.setAccessible(true);
            WifiConfiguration configuration = (WifiConfiguration) getWifiApConfiguration.invoke(wifiManager);
            psk = configuration.preSharedKey;
        } catch (NoSuchMethodException e) {
            Log.e(TAG, "getPsk: 没有这个方法" + e.toString() );
        } catch (IllegalAccessException e) {
            Log.e(TAG, "getPsk: 没有权限" + e.toString() );
        } catch (InvocationTargetException e) {
            Log.e(TAG, "getPsk: 调用目标出错----" + e.toString() );
        }
        return psk;
    }

    /**
     * 是否打开无线热点
     * @param context 调用上下文
     * @return true if wifiAP is enabled
     * */
    public static boolean isWifiApEnable(Context context) {
        boolean isEnabled = false;
        WifiManager wifiManager = (WifiManager) context
                .getApplicationContext().getSystemService(Context.WIFI_SERVICE);
        try {
            Method isWifiApEnabled = wifiManager.getClass().getMethod("isWifiApEnabled");
            isWifiApEnabled.setAccessible(true);
            isEnabled = (Boolean) isWifiApEnabled.invoke(wifiManager);

        } catch (NoSuchMethodException e) {
            Log.e(TAG, "isWifiApEnable: 没有这个方法" + e.toString() );
        } catch (IllegalAccessException e) {
            Log.e(TAG, "isWifiApEnable: 没有权限" + e.toString() );
        } catch (InvocationTargetException e) {
            Log.e(TAG, "isWifiApEnable: 调用目标出错----" + e.toString() );
        }

        return isEnabled;
    }
}

emmm， 文档注释还在学习中 =-=

如果需要配置的其它信息，可以直接进 configuration 看看。

参考文档

Android盒子开发，获取网络的信息(热点，WIFI，有线)