当android有互联网连接时如何建议

Question

guys, i want to create an application that performs a particular action when the device has a internet connection. Is this possible in android?

thanks.

Answer 1

you can list for a particular intent. define a receiver like this,

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

and in your receive, inspect the network state like,

@Override
public void onReceive(Context ctx, Intent intent) {
    if (intent.getAction().equals(ConnectivityManager.CONNECTIVITY_ACTION)) {
        NetworkInfo info = intent
                .getParcelableExtra(ConnectivityManager.EXTRA_NETWORK_INFO);
        String typeName = info.getTypeName();
        String subtypeName = info.getSubtypeName();
                    boolean available = info.isAvailable();
                    // etc
        }
}

Answer 2

public boolean online() {
    ConnectivityManager manager =
        (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
    NetworkInfo info = manager.getActiveNetworkInfo();
    return info != null && info.isConnectedOrConnecting();
}