android监听wifi断开,使用BroadcastReceiver获取Android中断开的WiFi网络的SSID？
我有以下BroadcastRecevier：
public class WiFiConnectionEventsReceiver extends BroadcastReceiver {
private static final String TAG = WiFiConnectionEventsReceiver.class.getSimpleName();
@Override
public void onReceive(Context context, @NonNull Intent intent) {
Log.v(TAG, "action: " + intent.getAction());
Log.v(TAG, "component: " + intent.getComponent());
Bundle extras = intent.getExtras();
if (extras != null) {
for (String key : extras.keySet()) {
Log.v(TAG, "key [" + key + "]: " +
extras.get(key));
}
} else {
Log.v(TAG, "no extras");
}
ConnectivityManager conMan = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo netInfo = conMan.getActiveNetworkInfo();
if (netInfo != null && netInfo.getType() == ConnectivityManager.TYPE_WIFI) {
Log.d("NetworkInfo", "Have Wifi Connection");
Log.d("NetworkInfo", netInfo.getExtraInfo());
Log.d("NetworkInfo", netInfo.getTypeName());
}
else {
Log.d("NetworkInfo", "Don't have Wifi Connection");
Log.d("NetworkInfo", netInfo.getExtraInfo());
Log.d("NetworkInfo", netInfo.getTypeName());
}
WifiManager wifiManager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
Log.d("WifiInfo", wifiManager.getConnectionInfo().toString());
}
}
它接收网络连接和断开连接事件 .
当它连接到WiFi网络时，我能够轻松获得网络的SSID .
但我希望能够在网络断开时获得WiFi网络的SSID(无需存储先前连接的网络，然后以这种方式匹配它们等) . 这可能吗？
WiFi连接时记录日志：
V/WiFiConnectionEventsReceiver: action: android.net.conn.CONNECTIVITY_CHANGE
V/WiFiConnectionEventsReceiver: component: ComponentInfo{com.example.test/com.example.test.WiFiConnectionEventsReceiver}
V/WiFiConnectionEventsReceiver: key [networkInfo]: [type: WIFI[], state: CONNECTED/CONNECTED, reason: (unspecified), extra: "SKY123”, roaming: false, failover: false, isAvailable: true]
V/WiFiConnectionEventsReceiver: key [networkType]: 1
V/WiFiConnectionEventsReceiver: key [inetCondition]: 100
V/WiFiConnectionEventsReceiver: key [extraInfo]: "SKY123”
D/NetworkInfo: Have Wifi Connection
D/NetworkInfo: "SKY123”
D/NetworkInfo: WIFI
D/WifiInfo: SSID: SKY123, BSSID: 10:40:03:ad:6x:c9, MAC: 02:00:00:00:00:00, Supplicant state: COMPLETED, RSSI: -79, Link speed: 43Mbps, Frequency: 2412MHz, Net ID: 1, Metered hint: false, score: 60
WiFi断开连接时记录(注意未知的SSID)：
V/WiFiConnectionEventsReceiver: action: android.net.conn.CONNECTIVITY_CHANGE
V/WiFiConnectionEventsReceiver: component: ComponentInfo{com.example.test/com.example.test.WiFiConnectionEventsReceiver}
V/WiFiConnectionEventsReceiver: key [networkInfo]: [type: WIFI[], state: DISCONNECTED/DISCONNECTED, reason: (unspecified), extra: , roaming: false, failover: false, isAvailable: true]
V/WiFiConnectionEventsReceiver: key [networkType]: 1
V/WiFiConnectionEventsReceiver: key [inetCondition]: 0
V/WiFiConnectionEventsReceiver: key [extraInfo]:
V/WiFiConnectionEventsReceiver: key [noConnectivity]: true
D/NetworkInfo: Don't have Wifi Connection
D/NetworkInfo: id
D/NetworkInfo: MOBILE
D/WifiInfo: SSID: , BSSID: , MAC: 02:00:00:00:00:00, Supplicant state: COMPLETED, RSSI: -127, Link speed: -1Mbps, Frequency: -1MHz, Net ID: -1, Metered hint: false, score: 0
我想要这个信息的原因是我希望能够跟踪用户在每个网络上的WiFi使用情况 - 连接和断开连接时间 .
如果没有断开连接的网络的SSID，我能想到的唯一方法就是：
if (WiFi network ABC disconnected)
if (if previous stored connection for WiFi network ABC has no disconnection time)
set WiFI network ABC disconnection time to now
然而，上述方法感觉不稳定，例如，如果由于某种原因错过了WiFi断开事件等等