检查意图互联网连接

Question

检查意图互联网连接有安卓系统吗？Intent ACTION_XXX当互联网连接可用时通知我？我想实例化一个BroadcastReceiver当用户启用Internet连接(通过wifi、GSM等)时，通知我的应用程序。有人能帮我吗？

Answer 1

<receiver android:name=".YOURRECEIVER">
   <intent-filter>
      <action android:name="android.net.conn.CONNECTIVITY_CHANGE" />
   </intent-filter></receiver><uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />

Answer 2

public class NetworkStateReceiver extends BroadcastReceiver {
    private static final String TAG = "NetworkStateReceiver";

    @Override
    public void onReceive(final Context context, final Intent intent) {

        Log.d(TAG, "Network connectivity change");

        if (intent.getExtras() != null) {
            final ConnectivityManager connectivityManager = (ConnectivityManager)context.getSystemService(Context.CONNECTIVITY_SERVICE);
            final NetworkInfo ni = connectivityManager.getActiveNetworkInfo();

            if (ni != null && ni.isConnectedOrConnecting()) {
                Log.i(TAG, "Network " + ni.getTypeName() + " connected");
            } else if (intent.getBooleanExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY, Boolean.FALSE)) {
                Log.d(TAG, "There's no network connectivity");
            }
        }
    }}