接着上篇的获取蓝牙列表，这次我们来获取android设备的wifi列表，话不多少直接上代码！
1.首先我们先获取wifi权限
<!-- 以下是使用wifi访问网络所需的权限 -->
<uses-permission android:name="android.permission.CHANGE_NETWORK_STATE" />
<uses-permission android:name="android.permission.CHANGE_WIFI_STATE" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.INTERNET" />接下来我们直接来定义wifiUtil
public class WifiUtil {
private Context context;
public WifiUtil(Context context) {
this.context = context;
}
// TODO: 2021/9/15 获取本机WIFI设备详细信息
@SuppressLint("MissingPermission")
public void getDetailsWifiInfo() {
StringBuffer sInfo = new StringBuffer();
WifiManager mWifiManager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
WifiInfo mWifiInfo = mWifiManager.getConnectionInfo();
int Ip = mWifiInfo.getIpAddress();
String strIp = "" + (Ip & 0xFF) + "." + ((Ip >> 8) & 0xFF) + "." + ((Ip >> 16) & 0xFF) + "." + ((Ip >> 24) & 0xFF);
sInfo.append("\n--BSSID : " + mWifiInfo.getBSSID());
sInfo.append("\n--SSID : " + mWifiInfo.getSSID());
sInfo.append("\n--nIpAddress : " + strIp);
sInfo.append("\n--MacAddress : " + mWifiInfo.getMacAddress());
sInfo.append("\n--NetworkId : " + mWifiInfo.getNetworkId());
sInfo.append("\n--LinkSpeed : " + mWifiInfo.getLinkSpeed() + "Mbps");
sInfo.append("\n--Rssi : " + mWifiInfo.getRssi());
sInfo.append("\n--SupplicantState : " + mWifiInfo.getSupplicantState()+mWifiInfo);
sInfo.append("\n\n\n\n");
Log.d("getDetailsWifiInfo", sInfo.toString());
}
// TODO: 2021/9/15 获取附近wifi信号
public List<String> getAroundWifiDeviceInfo() {
StringBuffer sInfo = new StringBuffer();
WifiManager mWifiManager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
WifiInfo mWifiInfo = mWifiManager.getConnectionInfo();
List<ScanResult> scanResults = mWifiManager.getScanResults();//搜索到的设备列表
List<ScanResult> newScanResultList = new ArrayList<>();
for (ScanResult scanResult : scanResults) {
int position = getItemPosition(newScanResultList,scanResult);
if (position != -1){
if (newScanResultList.get(position).level < scanResult.level){
newScanResultList.remove(position);
newScanResultList.add(position,scanResult);
}
}else {
newScanResultList.add(scanResult);
}
}
List<String> stringList = new ArrayList<>();
for (int i = 0; i <newScanResultList.size() ; i++) {
StringBuilder stringBuilder = new StringBuilder();
stringBuilder.append("设备名(SSID) ->" + newScanResultList.get(i).SSID + "\n");
stringBuilder.append("信号强度 ->" + newScanResultList.get(i).level + "\n");
stringBuilder.append("BSSID ->" + newScanResultList.get(i).BSSID + "\n");
stringBuilder.append("level ->" + newScanResultList.get(i).level + "\n");
stringBuilder.append("采集时间戳 ->" +System.currentTimeMillis() + "\n");
stringBuilder.append("rssi ->" + (mWifiInfo != null && (mWifiInfo.getSSID().replace("\"", "")).equals(newScanResultList.get(i).SSID) ? mWifiInfo.getRssi() : null) + "\n");
//是否为连接信号(1连接，默认为null)
stringBuilder.append("是否为连接信号 ->" + (mWifiInfo != null && (mWifiInfo.getSSID().replace("\"", "")).equals(newScanResultList.get(i).SSID) ? 1: null) + "\n");
stringBuilder.append("信道 - >" +getCurrentChannel(mWifiManager) + "\n");
//1 为2.4g 2 为5g
stringBuilder.append("频段 ->" + is24GOr5GHz(newScanResultList.get(i).frequency));
stringList.add(stringBuilder.toString());
}
Log.d("getAroundWifiDeviceInfo", sInfo.toString());
return stringList;
}
public static String is24GOr5GHz(int freq) {
if (freq > 2400 && freq < 2500){
return "1";
}else if (freq > 4900 && freq < 5900){
return "2";
}else {
return "无法判断";
}
}
/**
* 返回item在list中的坐标
*/
private int getItemPosition(List<ScanResult>list, ScanResult item) {
for (int i = 0; i < list.size(); i++) {
if (item.SSID.equals(list.get(i).SSID)) {
return i;
}
}
return -1;
}
public static int getCurrentChannel(WifiManager wifiManager) {
WifiInfo wifiInfo = wifiManager.getConnectionInfo();// 当前wifi连接信息
List<ScanResult> scanResults = wifiManager.getScanResults();
for (ScanResult result : scanResults) {
if (result.BSSID.equalsIgnoreCase(wifiInfo.getBSSID())
&& result.SSID.equalsIgnoreCase(wifiInfo.getSSID()
.substring(1, wifiInfo.getSSID().length() - 1))) {
return getChannelByFrequency(result.frequency);
}
}
return -1;
}
/**
* 根据频率获得信道
*
* @param frequency
* @return
*/
public static int getChannelByFrequency(int frequency) {
int channel = -1;
switch (frequency) {
case 2412:
channel = 1;
break;
case 2417:
channel = 2;
break;
case 2422:
channel = 3;
break;
case 2427:
channel = 4;
break;
case 2432:
channel = 5;
break;
case 2437:
channel = 6;
break;
case 2442:
channel = 7;
break;
case 2447:
channel = 8;
break;
case 2452:
channel = 9;
break;
case 2457:
channel = 10;
break;
case 2462:
channel = 11;
break;
case 2467:
channel = 12;
break;
case 2472:
channel = 13;
break;
case 2484:
channel = 14;
break;
case 5745:
channel = 149;
break;
case 5765:
channel = 153;
break;
case 5785:
channel = 157;
break;
case 5805:
channel = 161;
break;
case 5825:
channel = 165;
break;
}
return channel;
}
}
记得获取wifi的过程中要去掉重复的信号哈，去重代码
for (ScanResult scanResult : scanResults) {
int position = getItemPosition(newScanResultList,scanResult);
if (position != -1){
if (newScanResultList.get(position).level < scanResult.level){
newScanResultList.remove(position);
newScanResultList.add(position,scanResult);
}
}else {
newScanResultList.add(scanResult);
}
}2.在需要获取列表的地方设置数据，记得动态获取权限哈
// TODO: 2021/9/18 设置wifi管理器并动态获取手机权限
@SuppressLint({"CheckResult","NotifyDataSetChanged"})
private void setWifiManager() {
RxPermissions rxPermissions = new RxPermissions(this);
rxPermissions.requestEach(Manifest.permission.ACCESS_FINE_LOCATION)
.subscribe(permission -> {
if (permission.name.equalsIgnoreCase(Manifest.permission.ACCESS_FINE_LOCATION)) {
wifiUtil = new WifiUtil(this);
wifiListAdapter.getDatas().clear();
wifiList.clear();
wifiList.add(getString(R.string.wifi_list));
wifiList.addAll(wifiUtil.getAroundWifiDeviceInfo());
for (int i = 0; i < wifiList.size(); i++) {
typeBeanList.add(new TypeBean(true, wifiList.get(i)));
}
wifiListAdapter.notifyDataSetChanged();
}
});
}3.展示结果
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