android - 永远不会触发WifiManager.SUPPLICANT_CONNECTION_CHANGE_ACTION

我正在onResume()上注册接收者:

registerReceiver(wifiConnectivityReceiver, new
                IntentFilter(WifiManager.SUPPLICANT_CONNECTION_CHANGE_ACTION));

这是接收者本身:

class WiFiConnectivityReceiver extends BroadcastReceiver {

    @Override
    public void onReceive(Context context, Intent intent) {
        if (intent.getBooleanExtra(WifiManager.EXTRA_SUPPLICANT_CONNECTED,false)){
            Log.d(TAG,"Connected to network!");
        } else {
            Log.d(TAG,"Could not connect to network!");
        }
    }
}

在我的应用程序中，我可以连接到选定的WiFi网络，但是此SUPPLICANT_CONNECTION_CHANGE_ACTION永远不会触发。例如，如果将其更改为SUPPLICANT_STATE_CHANGED_ACTION，它就可以正常工作。

我正在研究ICS。
有其他 Intent 的人遇到过这样的问题吗？

最佳答案

我认为以下代码将对您有所帮助:

public void installMyReceiver(){
    if (I) Log.i(TAG, "installMyReceiver() - Online");
    mFlag = true;


    myReceiver = new BroadcastReceiver(){
        public void onReceive (Context context, Intent intent){
            String action = intent.getAction();

            if (WifiManager.SUPPLICANT_STATE_CHANGED_ACTION.equals(action)){

                SupplicantState supplicantState = (SupplicantState)intent.getParcelableExtra(WifiManager.EXTRA_NEW_STATE);
                if (supplicantState == (SupplicantState.COMPLETED)){
                    if (I) Log.i(TAG, "SUPPLICANTSTATE ---> Connected");
                      //do something
                }

                if (supplicantState == (SupplicantState.DISCONNECTED)){
                    if (I) Log.i(TAG, "SUPPLICANTSTATE ---> Disconnected");
                       //do something
                }

            }
        }
    };

    IntentFilter mFilter = new IntentFilter (WifiManager.SUPPLICANT_STATE_CHANGED_ACTION);
    this.registerReceiver (myReceiver, mFilter);
}

这是获取所需信息然后执行一些操作的简单方法。
希望它能对您有所帮助!