Android应用帮助类13-网络管理类-AbWifiUtil

package com.ab.util;


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 AbWifiUtil {


/**
* 
* 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WiFi
boolean 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WiFi
boolean 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;
}


}