Question

我在使用BroadcastReceiver从IntentService访问WifiManager数据时遇到问题

MyIntentService的BroadcastReceiver可以监视WiFi状态的变化，并在连接时尝试获取当前的SSID

当应用可见并且WiFi连接{dis，}时，一切正常，但是在后台，MyIntentService和BroadcastReceiver会启动，但WifiManager对象不完整（缺少SSID，BSSID不正确，而其他字段是礼物）

相关代码段：

public class MyIntentService extends IntentService {
    private final static String TAG = MyIntentService.class.getSimpleName();

    static BroadcastReceiver broadcastReceiver = new BroadcastReceiver() {
        public void onReceive(Context context, Intent intent) {
            String methodName = new Object() {
            }.getClass().getEnclosingMethod().getName();
            Log.d(TAG, "-> " + methodName);

            String currentSSID = SSIDManager.getCurrentSSID(context);
            Log.d(TAG, "-> currentSSID: " + currentSSID);

            [ ... ]

class SSIDManager {
    private final static String TAG = SSIDManager.class.getSimpleName();

    static String getCurrentSSID(Context context) {
        WifiManager wifiManager = (WifiManager) context.getApplicationContext().getSystemService(Context.WIFI_SERVICE);
        assert wifiManager != null;
        WifiInfo info = wifiManager.getConnectionInfo();
        Log.d("*****", String.valueOf(info));

        [ ... ]

应用程序处于前台时的Logcat：

07-29 10:41:35.934 20094-20094/com.pijupiju.familymode D/*****: SSID: DialUp, BSSID: e8:de:27:d1:0a:dc, MAC: 02:00:00:00:00:00, Supplicant state: COMPLETED, RSSI: -32, Link speed: 54Mbps, Frequency: 2462MHz, Net ID: 7, Metered hint: false, score: 60

应用程序在后台且服务处于活动状态时的Logcat：

07-29 10:41:54.774 20094-20094/com.pijupiju.familymode D/*****: SSID: , BSSID: 02:00:00:00:00:00, 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

TL; DR-wifiManager对象已初始化，但不完整...

有什么想法吗？

通过IntentService通过BroadcastReceiver访问WifiManager时缺少SSID

0 个答案: