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javaandroidandroid-wifi

How to detect if user has 3G/Wifi on before making URL connection?

I don't want my app to crash if the user doesn't have wifi or 3g connectivity. How can I catch this at runtime in my app?

Solution

  • First get a reference to the ConnectivityManager and then check the Wifi and 3G status of the device. You'll need the ACCESS_NETWORK_STATE permission to use this service.

        ConnectivityManager connManager = (ConnectivityManager) getSystemService(CONNECTIVITY_SERVICE);
    NetworkInfo mWifi = connManager.getNetworkInfo(ConnectivityManager.TYPE_WIFI);
    NetworkInfo mMobile = connManager.getNetworkInfo(ConnectivityManager.TYPE_MOBILE);

    if (mWifi.isConnected() == false && mMobile.isConnected() == false) {
        showDialog(DIALOG_NETWORK_UNAVAILABLE);
    }