向WifiManager.SUPPLICANT_STATE_CHANGED_ACTION注冊接收器,以便在發生連接失敗時得到通知.這可能是由于提供了無效的憑據來連接到WiFi

private void registerReceiver() {

IntentFilter filter = new IntentFilter();

filter.addAction(ConnectivityManager.CONNECTIVITY_ACTION);

filter.addAction(WifiManager.SUPPLICANT_STATE_CHANGED_ACTION);

registerReceiver(mReceiver, filter);

}

還有您的接收器

private BroadcastReceiver mReceiver = new BroadcastReceiver() {

@Override

public void onReceive(Context context, Intent intent) {

NetworkInfo info = intent.getParcelableExtra(WifiManager.EXTRA_NETWORK_INFO);

if (info != null) {

if (info.isConnected()) {

//connected

WifiManager wifiManager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);

WifiInfo wifiInfo = wifiManager.getConnectionInfo();

String ssid = wifiInfo.getSSID();

}

} else {

if (intent.getAction().equals(WifiManager.SUPPLICANT_STATE_CHANGED_ACTION)) {

if (intent.hasExtra(WifiManager.EXTRA_SUPPLICANT_ERROR)) {

//failed to connect

}

}

}

};

總結

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