Question

With this method i know when the user is connected or not.

public boolean isOnline() {
    ConnectivityManager cm = 
         (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
    NetworkInfo netInfo = cm.getActiveNetworkInfo();
    if (netInfo != null && netInfo.isConnected()) {
        return true;
    }
    return false;
}

in my application when the user press send it will upload some data to the server, if there is not conectivity it will say “we will try to send it later” but how i can check the internet status and only when the connectivity is on, send the information?

Answer 1

First, use an IntentService to handle all of your data uploads. Have it check for connectivity with the method you have – if connected, upload the data otherwise store it (use SharedPreferences or a database).

Second create a BroadcastReceiver and register it in the manifest with the following <intent-filter>…

<intent-filter>
    <action android:name="android.net.wifi.STATE_CHANGE" />
    <action android:name="android.net.conn.CONNECTIVITY_CHANGE" />"
</intent-filter>

NOTE: You will need the following permissions…

<uses-permission android:name="android.permission.CHANGE_NETWORK_STATE" />
<uses-permission android:name="android.permission.CHANGE_WIFI_STATE" />

In the onReceive(...) method of the BroadcastReceiver have it check to see if any data is pending and, if there is, have it start the IntentService to send the data.

Also, use Notifications created by the IntentService to give feedback to the user.