与WIFI操作相关的工具类

package com.flyou.utils;import java.util.List;import android.content.Context;import android.net.ConnectivityManager;import android.net.NetworkInfo;import android.net.wifi.ScanResult;import android.net.wifi.WifiInfo;import android.net.wifi.WifiManager;import android.telephony.TelephonyManager;public class WifiUtil {/** *  * 描述：打开wifi. * @param context * @param enabled * @return */public static void setWifiEnabled(Context context,boolean enabled){WifiManager wifiManager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);if(enabled){wifiManager.setWifiEnabled(true);}else{wifiManager.setWifiEnabled(false);}}/** *  * 描述：是否有网络连接. * @param context * @return */public static boolean isConnectivity(Context context) {ConnectivityManager connectivityManager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);TelephonyManager telephonyManager = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);return ((connectivityManager.getActiveNetworkInfo() != null && connectivityManager.getActiveNetworkInfo().getState() == NetworkInfo.State.CONNECTED) || telephonyManager.getNetworkType() == TelephonyManager.NETWORK_TYPE_UMTS);}/** * 判断当前网络是否是wifi网络. * * @param context the context * @return boolean */public static boolean isWifiConnectivity(Context context) {ConnectivityManager connectivityManager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);NetworkInfo activeNetInfo = connectivityManager.getActiveNetworkInfo();if (activeNetInfo != null&& activeNetInfo.getType() == ConnectivityManager.TYPE_WIFI) {return true;}return false;}/** *  * 描述：得到所有的WiFi列表. * @param context * @return */public static List<ScanResult> getScanResults(Context context) {WifiManager wifiManager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);List<ScanResult> list = null;//开始扫描WiFiboolean f = wifiManager.startScan();if(!f){getScanResults(context);}else{// 得到扫描结果list = wifiManager.getScanResults();}return list;}/** *  * 描述：根据SSID过滤扫描结果. * @param context * @param bssid * @return */public static ScanResult getScanResultsByBSSID(Context context,String bssid) {WifiManager wifiManager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);ScanResult scanResult = null;//开始扫描WiFiboolean f = wifiManager.startScan();if(!f){getScanResultsByBSSID(context,bssid);}// 得到扫描结果List<ScanResult> list = wifiManager.getScanResults();if (list != null) {for (int i = 0; i < list.size(); i++) {// 得到扫描结果scanResult = list.get(i);if (scanResult.BSSID.equals(bssid)) {break;}}}return scanResult;}/** *  * 描述：获取连接的WIFI信息. * @param context * @return */public static WifiInfo getConnectionInfo(Context context) {WifiManager wifiManager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);WifiInfo wifiInfo = wifiManager.getConnectionInfo();return wifiInfo;}}