Apache Cordova API Documentation

Network Information (Connection)

This plugin provides an implementation of an old version of the Network Information API. It provides information about the device's cellular and wifi connection, and whether the device has an internet connection.

Installation

cordova plugin add org.apache.cordova.network-information

Supported Platforms

  • Amazon Fire OS
  • Android
  • BlackBerry 10
  • iOS
  • Windows Phone 7 and 8
  • Tizen
  • Windows 8

Connection

The connection object, exposed via navigator.connection, provides information about the device's cellular and wifi connection.

Properties

  • connection.type

Constants

  • Connection.UNKNOWN
  • Connection.ETHERNET
  • Connection.WIFI
  • Connection.CELL_2G
  • Connection.CELL_3G
  • Connection.CELL_4G
  • Connection.CELL
  • Connection.NONE

connection.type

This property offers a fast way to determine the device's network connection state, and type of connection.

Quick Example

function checkConnection() {
    var networkState = navigator.connection.type;

    var states = {};
    states[Connection.UNKNOWN]  = 'Unknown connection';
    states[Connection.ETHERNET] = 'Ethernet connection';
    states[Connection.WIFI]     = 'WiFi connection';
    states[Connection.CELL_2G]  = 'Cell 2G connection';
    states[Connection.CELL_3G]  = 'Cell 3G connection';
    states[Connection.CELL_4G]  = 'Cell 4G connection';
    states[Connection.CELL]     = 'Cell generic connection';
    states[Connection.NONE]     = 'No network connection';

    alert('Connection type: ' + states[networkState]);
}

checkConnection();

API Change

Until Cordova 2.3.0, the Connection object was accessed via navigator.network.connection, after which it was changed to navigator.connection to match the W3C specification. It's still available at its original location, but is deprecated and will eventually be removed.

iOS Quirks

  • iOS can't detect the type of cellular network connection.
    • navigator.connection.type is set to Connection.CELL for all cellular data.

Windows Phone Quirks

  • When running in the emulator, always detects navigator.connection.type as Connection.UNKNOWN.

  • Windows Phone can't detect the type of cellular network connection.

    • navigator.connection.type is set to Connection.CELL for all cellular data.

Tizen Quirks

  • Tizen can only detect a WiFi or cellular connection.
    • navigator.connection.type is set to Connection.CELL_2G for all cellular data.

Network-related Events

offline

The event fires when an application goes offline, and the device is not connected to the Internet.

document.addEventListener("offline", yourCallbackFunction, false);

Details

The offline event fires when a previously connected device loses a network connection so that an application can no longer access the Internet. It relies on the same information as the Connection API, and fires when the connection.type becomes NONE.

Applications typically should use document.addEventListener to attach an event listener once the deviceready event fires.

Quick Example

document.addEventListener("offline", onOffline, false);

function onOffline() {
    // Handle the offline event
}

iOS Quirks

During initial startup, the first offline event (if applicable) takes at least a second to fire.

Windows Phone 7 Quirks

When running in the Emulator, the connection.status is always unknown, so this event does not fire.

Windows Phone 8 Quirks

The Emulator reports the connection type as Cellular, which does not change, so the event does not fire.

online

This event fires when an application goes online, and the device becomes connected to the Internet.

document.addEventListener("online", yourCallbackFunction, false);

Details

The online event fires when a previously unconnected device receives a network connection to allow an application access to the Internet. It relies on the same information as the Connection API, and fires when the value of connection.type changes from NONE to any other value.

Applications typically should use document.addEventListener to attach an event listener once the deviceready event fires.

Quick Example

document.addEventListener("online", onOnline, false);

function onOnline() {
    // Handle the online event
}

iOS Quirks

During initial startup, the first online event (if applicable) takes at least a second to fire, prior to which connection.type is UNKNOWN.

Windows Phone 7 Quirks

When running in the Emulator, the connection.status is always unknown, so this event does not fire.

Windows Phone 8 Quirks

The Emulator reports the connection type as Cellular, which does not change, so events does not fire.

Last modified: 2014-05-23



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