SUPPLICANT_CONNECTION_CHANGE_ACTION从未收到过

Question

我希望在设备切换网络时收到通知,但由于一些奇怪的原因,尽管文档和SO上的各种示例,这个特定的操作永远不会被发送到我的接收器.

这是我的代码

接收器:

BroadcastReceiver connectedToLocalWifiReceiver = new BroadcastReceiver() {
        @Override
        public void onReceive(Context context, Intent intent) {
            final String action = intent.getAction();
            Log.d(TAG, "ACTION='" + action +"'"); //<-- WifiManager.SUPPLICANT_CONNECTION_CHANGE_ACTION never turns up here
            if (action.equals(WifiManager.SUPPLICANT_CONNECTION_CHANGE_ACTION)) {
                if (intent.getBooleanExtra(WifiManager.EXTRA_SUPPLICANT_CONNECTED, false)){
                    //this block of code is never called

                } else {
                    // ditto for this block
                }
            }
        }
    };

注册:在我连接到网络之前的代码中,我注册了我的接收器.我已经尝试将其注册到其他操作并且它们确实出现了(ConnectivityManager.CONNECTIVITY_ACTION例如)但是SUPPLICANT_CONNECTION_CHANGE_ACTION我什么都没得到.

IntentFilter intentFilter = new IntentFilter();
intentFilter.addAction(WifiManager.SUPPLICANT_CONNECTION_CHANGE_ACTION);
registerReceiver(connectedToLocalWifiReceiver, intentFilter);
wifiManager.enableNetwork(i.networkId, true);
wifiManager.reconnect();

所以在这一点上,wifi实际上与其当前网络断开连接并连接到我指定的那个,但它没有广播任何东西.

我看不出任何明显错误,但必须遗漏一些非常重要的东西.

我的清单权限是这样设置的,虽然我没有看到,如果它实际上正确地进行了wifi切换,权限可能与它有任何关系了:

<uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
    <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
    <uses-permission android:name="android.permission.CHANGE_WIFI_MULTICAST_STATE"/>
    <uses-permission android:name="android.permission.CHANGE_WIFI_STATE"/>
    <uses-permission android:name="android.permission.CHANGE_NETWORK_STATE"/>

很想知道我在俯瞰什么.

Answer 1

我遇到了类似的问题并设法解决了它.

我正在使用NETWORK_STATE_CHANGED_ACTION而不是SUPPLICANT_CONNECTION_CHANGE_ACTION.

registerReceiver(new BroadcastReceiver() {
    public void onReceive(Context context, Intent intent) {
        Log.v(LOG_TAG, "onReceive");
        if (intent.getAction().equals(WifiManager.NETWORK_STATE_CHANGED_ACTION)) {
            Log.d(LOG_TAG, "network state was changed");
            NetworkInfo networkInfo = intent.getParcelableExtra(WifiManager.EXTRA_NETWORK_INFO);
            if (networkInfo.getState() == NetworkInfo.State.CONNECTED) {
                Log.d(LOG_TAG, "network connection has been established");
                // the receiver is no longer needed, so unregist it immediately.
                unregisterReceiver(this);

                // do something...

            }
        }
    }
}, new IntentFilter(WifiManager.NETWORK_STATE_CHANGED_ACTION));

注意:我没有设置任何其他权限.