Android 如何获取所有wifi接入点的BSSID？
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How to get BSSID of all wifi access points?
提问by Balaji Khadake
I need to get BSSID(MAC) of all AP's. Please find below code block.
我需要获取所有 AP 的 BSSID(MAC)。请找到下面的代码块。
List<WifiConfiguration> test = wifiManager.getConfiguredNetworks();
for(int k=0;k<test.size();k++){
Log.d("acheck", "test BSSID = "+test.get(k).BSSID);
Log.d("acheck", "test BSSID = "+test.get(k).BSSID);
}
But above code block returns SSID properly but null for BSSID. I want to connect to strongest access point with user defined SSID. Is there any API method available to get best signal strength's AP with user defined SSID.(In my case there are many SSID's with single SSID with multiple AP's available.)
但上面的代码块正确返回 SSID，但为 BSSID 返回 null。我想使用用户定义的 SSID 连接到最强的接入点。是否有任何 API 方法可用于通过用户定义的 SSID 获得最佳信号强度的 AP。（在我的情况下，有许多具有单个 SSID 的 SSID，而多个 AP 可用。）
回答by Mr_and_Mrs_D
Adapted the answer by @ToonSuperLove, mainly to avoid NPEs.
改编@ToonSuperLove 的答案，主要是为了避免 NPE。
public class WifiTest extends Activity {
public void loadWifiAvailableList(EditText etWifiList) {
WifiManager wifiManager = (WifiManager)
getSystemService(Context.WIFI_SERVICE);
List<ScanResult> results = wifiManager.getScanResults();
String message = "No results. Check wireless is on";
if (results != null) {
final int size = results.size();
if (size == 0) message = "No access points in range";
else {
ScanResult bestSignal = results.get(0);
etWifiList.setText(""); // etWifiList is EditText
int count = 1;
for (ScanResult result : results) {
etWifiList.append(count++ + ". " + result.SSID + " : "
+ result.level + "\n" + result.BSSID + "\n"
+ result.capabilities + "\n"
+ "\n=======================\n");
if (WifiManager.compareSignalLevel(bestSignal.level,
result.level) < 0) {
bestSignal = result;
}
}
message = String.format(
"%s networks found. %s is the strongest.", size,
bestSignal.SSID + " : " + bestSignal.level);
}
}
Toast.makeText(this, message, Toast.LENGTH_LONG).show();
}
}
回答by Sruit A.Suk
In configuration it just the setting part (eg. like the dialog that ask user/pass/ WPA or NULL blah blah)
在配置中，它只是设置部分（例如，像询问用户/通过/ WPA 或 NULL 等等的对话框）
To get BSSID from AP, you need to get it from ScanResult
要从 AP 获取 BSSID，您需要从 ScanResult 获取
public void loadWifiAvailableList() {
List<ScanResult> results = wifiManager.getScanResults();
ScanResult bestSignal = null;
etWifiList.setText(""); // etWifiList is EditText
int count = 1;
for (ScanResult result : results) {
etWifiList.append(count++ + ". " + result.SSID + " : " + result.level + "\n" +
result.BSSID + "\n" + result.capabilities + "\n" +
"\n=======================\n");
if (bestSignal == null || WifiManager.compareSignalLevel(bestSignal.level, result.level) < 0)
{
bestSignal = result;
}
}
String message = String.format("%s networks found. %s is the strongest.",
results.size(), bestSignal.SSID + " : " + bestSignal.level);
Toast.makeText(this, message, Toast.LENGTH_LONG).show();
}
回答by Ray
To get BSSID for currently connected WIFI network, use WiFiInfo class.
要获取当前连接的 WIFI 网络的 BSSID，请使用 WiFiInfo 类。
WifiManager wifiMan = (WifiManager) context.getSystemService(
Context.WIFI_SERVICE);
WifiInfo wifiInfo = wifiMan.getConnectionInfo();
String macAddr = wifiInfo.getMacAddress();
String bssid = wifiInfo.getBSSID();
