Events
PhoneGap lifecycle events.
Event Types
- deviceready
- pause
- resume
- online
- offline
- backbutton
- batterycritical
- batterylow
- batterystatus
- menubutton
- searchbutton
- startcallbutton
- endcallbutton
- volumedownbutton
- volumeupbutton
deviceready
This is an event that fires when PhoneGap is fully loaded.
document.addEventListener("deviceready", yourCallbackFunction, false);
Details
This is a very important event that every PhoneGap application should use.
PhoneGap consists of two code bases: native and JavaScript. While the native code is loading, a custom loading image is displayed. However, JavaScript is only loaded once the DOM loads. This means your web application could, potentially, call a PhoneGap JavaScript function before it is loaded.
The PhoneGap deviceready
event fires once PhoneGap has fully loaded. After the device has fired, you can safely make calls to PhoneGap function.
Typically, you will want to attach an event listener with document.addEventListener
once the HTML document's DOM has loaded.
Supported Platforms
- Android
- BlackBerry WebWorks (OS 5.0 and higher)
- iOS
Quick Example
document.addEventListener("deviceready", onDeviceReady, false);
function onDeviceReady() {
// Now safe to use the PhoneGap API
}
Full Example
<!DOCTYPE html>
<html>
<head>
<title>PhoneGap Device Ready Example</title>
<script type="text/javascript" charset="utf-8" src="phonegap.js"></script>
<script type="text/javascript" charset="utf-8">
// Call onDeviceReady when PhoneGap is loaded.
//
// At this point, the document has loaded but phonegap.js has not.
// When PhoneGap is loaded and talking with the native device,
// it will call the event `deviceready`.
//
function onLoad() {
document.addEventListener("deviceready", onDeviceReady, false);
}
// PhoneGap is loaded and it is now safe to make calls PhoneGap methods
//
function onDeviceReady() {
// Now safe to use the PhoneGap API
}
</script>
</head>
<body onload="onLoad()">
</body>
</html>
BlackBerry (OS 4.6) Quirks
Custom events are not supported in the RIM BrowserField (web browser view), so the deviceready
event will never fire.
A workaround is to manually query PhoneGap.available
until PhoneGap has fully loaded.
function onLoad() {
// BlackBerry OS 4 browser does not support events.
// So, manually wait until PhoneGap is available.
//
var intervalID = window.setInterval(
function() {
if (PhoneGap.available) {
window.clearInterval(intervalID);
onDeviceReady();
}
},
500
);
}
function onDeviceReady() {
// Now safe to use the PhoneGap API
}
pause
This is an event that fires when a PhoneGap application is put into the background.
document.addEventListener("pause", yourCallbackFunction, false);
Details
PhoneGap consists of two code bases: native and JavaScript. While the native code puts the application into the background the pause event is fired.
Typically, you will want to attach an event listener with document.addEventListener
once you receive the PhoneGap 'deviceready' event.
Supported Platforms
- Android
- BlackBerry WebWorks (OS 5.0 and higher)
- iOS
Quick Example
document.addEventListener("pause", onPause, false);
function onPause() {
// Handle the pause event
}
Full Example
<!DOCTYPE html>
<html>
<head>
<title>PhoneGap Pause Example</title>
<script type="text/javascript" charset="utf-8" src="phonegap.js"></script>
<script type="text/javascript" charset="utf-8">
// Call onDeviceReady when PhoneGap is loaded.
//
// At this point, the document has loaded but phonegap.js has not.
// When PhoneGap is loaded and talking with the native device,
// it will call the event `deviceready`.
//
function onLoad() {
document.addEventListener("deviceready", onDeviceReady, false);
}
// PhoneGap is loaded and it is now safe to make calls PhoneGap methods
//
function onDeviceReady() {
document.addEventListener("pause", onPause, false);
}
// Handle the pause event
//
function onPause() {
}
</script>
</head>
<body onload="onLoad()">
</body>
</html>
iOS Quirks
In the pause handler, any calls that go through Objective-C will not work, nor will any calls that are interactive, like alerts. This means that you cannot call console.log (and its variants), or any calls from Plugins or the PhoneGap API. These will only be processed when the app resumes (processed on the next run-loop).
resume
This is an event that fires when a PhoneGap application is retrieved from the background.
document.addEventListener("resume", yourCallbackFunction, false);
Details
PhoneGap consists of two code bases: native and JavaScript. While the native code pulls the application from the background the resume event is fired.
Typically, you will want to attach an event listener with document.addEventListener
once you receive the PhoneGap 'deviceready' event.
Supported Platforms
- Android
- BlackBerry WebWorks (OS 5.0 and higher)
- iOS
Quick Example
document.addEventListener("resume", onResume, false);
function onResume() {
// Handle the resume event
}
Full Example
<!DOCTYPE html>
<html>
<head>
<title>PhoneGap Resume Example</title>
<script type="text/javascript" charset="utf-8" src="phonegap.js"></script>
<script type="text/javascript" charset="utf-8">
// Call onDeviceReady when PhoneGap is loaded.
//
// At this point, the document has loaded but phonegap.js has not.
// When PhoneGap is loaded and talking with the native device,
// it will call the event `deviceready`.
//
function onLoad() {
document.addEventListener("deviceready", onDeviceReady, false);
}
// PhoneGap is loaded and it is now safe to make calls PhoneGap methods
//
function onDeviceReady() {
document.addEventListener("resume", onResume, false);
}
// Handle the resume event
//
function onResume() {
}
</script>
</head>
<body onload="onLoad()">
</body>
</html>
online
This is an event that fires when a PhoneGap application is online (connected to the Internet).
document.addEventListener("online", yourCallbackFunction, false);
Details
When the application's network connection changes to being online, the online event is fired.
Typically, you will want to attach an event listener with document.addEventListener
once you receive the PhoneGap 'deviceready' event.
Supported Platforms
- Android
- BlackBerry WebWorks (OS 5.0 and higher)
- iOS
Quick Example
document.addEventListener("online", onOnline, false);
function onOnline() {
// Handle the online event
}
Full Example
<!DOCTYPE html>
<html>
<head>
<title>PhoneGap Online Example</title>
<script type="text/javascript" charset="utf-8" src="phonegap.js"></script>
<script type="text/javascript" charset="utf-8">
// Call onDeviceReady when PhoneGap is loaded.
//
// At this point, the document has loaded but phonegap.js has not.
// When PhoneGap is loaded and talking with the native device,
// it will call the event `deviceready`.
//
function onLoad() {
document.addEventListener("deviceready", onDeviceReady, false);
}
// PhoneGap is loaded and it is now safe to make calls PhoneGap methods
//
function onDeviceReady() {
document.addEventListener("online", onOnline, false);
}
// Handle the online event
//
function onOnline() {
}
</script>
</head>
<body onload="onLoad()">
</body>
</html>
iOS Quirks
During initial startup, the first online event (if applicable) will take at least a second to fire.
offline
This is an event that fires when a PhoneGap application is offline (not connected to the Internet).
document.addEventListener("offline", yourCallbackFunction, false);
Details
When the application's network connection changes to being offline, the offline event is fired.
Typically, you will want to attach an event listener with document.addEventListener
once you receive the PhoneGap 'deviceready' event.
Supported Platforms
- Android
- BlackBerry WebWorks (OS 5.0 and higher)
- iOS
Quick Example
document.addEventListener("offline", onOffline, false);
function onOffline() {
// Handle the offline event
}
Full Example
<!DOCTYPE html>
<html>
<head>
<title>PhoneGap Offline Example</title>
<script type="text/javascript" charset="utf-8" src="phonegap.js"></script>
<script type="text/javascript" charset="utf-8">
// Call onDeviceReady when PhoneGap is loaded.
//
// At this point, the document has loaded but phonegap.js has not.
// When PhoneGap is loaded and talking with the native device,
// it will call the event `deviceready`.
//
function onLoad() {
document.addEventListener("deviceready", onDeviceReady, false);
}
// PhoneGap is loaded and it is now safe to make calls PhoneGap methods
//
function onDeviceReady() {
document.addEventListener("offline", onOffline, false);
}
// Handle the offline event
//
function onOffline() {
}
</script>
</head>
<body onload="onLoad()">
</body>
</html>
iOS Quirks
During initial startup, the first offline event (if applicable) will take at least a second to fire.
backbutton
This is an event that fires when the user presses the back button.
document.addEventListener("backbutton", yourCallbackFunction, false);
Details
If you need to override the default back button behaviour you can register an event listener for the 'backbutton' event. It is no longer necessary to call any other method to over ride the back button behaviour. Now, you only need to register an event listener for 'backbutton'.
Typically, you will want to attach an event listener with document.addEventListener
once you receive the PhoneGap 'deviceready' event.
Supported Platforms
- Android
- BlackBerry WebWorks (OS 5.0 and higher)
Quick Example
document.addEventListener("backbutton", onBackKeyDown, false);
function onBackKeyDown() {
// Handle the back button
}
Full Example
<!DOCTYPE html>
<html>
<head>
<title>PhoneGap Back Button Example</title>
<script type="text/javascript" charset="utf-8" src="phonegap.js"></script>
<script type="text/javascript" charset="utf-8">
// Call onDeviceReady when PhoneGap is loaded.
//
// At this point, the document has loaded but phonegap.js has not.
// When PhoneGap is loaded and talking with the native device,
// it will call the event `deviceready`.
//
function onLoad() {
document.addEventListener("deviceready", onDeviceReady, false);
}
// PhoneGap is loaded and it is now safe to call PhoneGap methods
//
function onDeviceReady() {
// Register the event listener
document.addEventListener("backbutton", onBackKeyDown, false);
}
// Handle the back button
//
function onBackKeyDown() {
}
</script>
</head>
<body onload="onLoad()">
</body>
</html>
batterycritical
This is an event that fires when a PhoneGap application detects the battery has reached the critical level threshold.
window.addEventListener("batterycritical", yourCallbackFunction, false);
Details
This event that fires when a PhoneGap application detects the percentage of battery has reached the critical battery threshold. This value is device specific.
The batterycritical handler will be called with an object that contains two properties:
- level: The percentage of battery (0-100). (Number)
- isPlugged: A boolean that represents whether or not the device is plugged in or not. (Boolean)
Typically, you will want to attach an event listener with window.addEventListener
once you receive the PhoneGap 'deviceready' event.
Supported Platforms
- iOS
- Android
- BlackBerry WebWorks (OS 5.0 and higher)
Quick Example
window.addEventListener("batterycritical", onBatteryCritical, false);
function onBatteryCritical(info) {
// Handle the battery critical event
alert("Battery Level Critical " + info.level + "%\nRecharge Soon!");
}
Full Example
<!DOCTYPE html>
<html>
<head>
<title>PhoneGap Device Ready Example</title>
<script type="text/javascript" charset="utf-8" src="phonegap.js"></script>
<script type="text/javascript" charset="utf-8">
// Call onDeviceReady when PhoneGap is loaded.
//
// At this point, the document has loaded but phonegap.js has not.
// When PhoneGap is loaded and talking with the native device,
// it will call the event `deviceready`.
//
function onLoad() {
document.addEventListener("deviceready", onDeviceReady, false);
}
// PhoneGap is loaded and it is now safe to make calls PhoneGap methods
//
function onDeviceReady() {
window.addEventListener("batterycritical", onBatteryCritical, false);
}
// Handle the batterycritical event
//
function onBatteryCritical(info) {
alert("Battery Level Critical " + info.level + "%\nRecharge Soon!");
}
</script>
</head>
<body onload="onLoad()">
</body>
</html>
batterylow
This is an event that fires when a PhoneGap application detects the battery has reached the low level threshold.
window.addEventListener("batterylow", yourCallbackFunction, false);
Details
This event that fires when a PhoneGap application detects the percentage of battery has reached the low battery threshold. This value is device specific.
The batterylow handler will be called with an object that contains two properties:
- level: The percentage of battery (0-100). (Number)
- isPlugged: A boolean that represents whether or not the device is plugged in or not. (Boolean)
Typically, you will want to attach an event listener with document.addEventListener
once you receive the PhoneGap 'deviceready' event.
Supported Platforms
- iOS
- Android
- BlackBerry WebWorks (OS 5.0 and higher)
Quick Example
window.addEventListener("batterylow", onBatteryLow, false);
function onBatteryLow(info) {
// Handle the battery low event
alert("Battery Level Low " + info.level + "%");
}
Full Example
<!DOCTYPE html>
<html>
<head>
<title>PhoneGap Device Ready Example</title>
<script type="text/javascript" charset="utf-8" src="phonegap.js"></script>
<script type="text/javascript" charset="utf-8">
// Call onDeviceReady when PhoneGap is loaded.
//
// At this point, the document has loaded but phonegap.js has not.
// When PhoneGap is loaded and talking with the native device,
// it will call the event `deviceready`.
//
function onLoad() {
document.addEventListener("deviceready", onDeviceReady, false);
}
// PhoneGap is loaded and it is now safe to make calls PhoneGap methods
//
function onDeviceReady() {
window.addEventListener("batterylow", onBatteryLow, false);
}
// Handle the batterylow event
//
function onBatteryLow(info) {
alert("Battery Level Low " + info.level + "%");
}
</script>
</head>
<body onload="onLoad()">
</body>
</html>
batterystatus
This is an event that fires when a PhoneGap application detects a change in the battery status.
window.addEventListener("batterystatus", yourCallbackFunction, false);
Details
This event that fires when a PhoneGap application detects the percentage of battery has changed by at least 1 percent. It is also fired if the device has been plugged in or un-plugged.
The battery status handler will be called with an object that contains two properties:
- level: The percentage of battery (0-100). (Number)
- isPlugged: A boolean that represents whether or not the device is plugged in or not. (Boolean)
Typically, you will want to attach an event listener with window.addEventListener
once you receive the PhoneGap 'deviceready' event.
Supported Platforms
- iOS
- Android
- BlackBerry WebWorks (OS 5.0 and higher)
Quick Example
window.addEventListener("batterystatus", onBatteryStatus, false);
function onBatteryStatus(info) {
// Handle the online event
console.log("Level: " + info.level + " isPlugged: " + info.isPlugged);
}
Full Example
<!DOCTYPE html>
<html>
<head>
<title>PhoneGap Device Ready Example</title>
<script type="text/javascript" charset="utf-8" src="phonegap.js"></script>
<script type="text/javascript" charset="utf-8">
// Call onDeviceReady when PhoneGap is loaded.
//
// At this point, the document has loaded but phonegap.js has not.
// When PhoneGap is loaded and talking with the native device,
// it will call the event `deviceready`.
//
function onLoad() {
document.addEventListener("deviceready", onDeviceReady, false);
}
// PhoneGap is loaded and it is now safe to make calls PhoneGap methods
//
function onDeviceReady() {
window.addEventListener("batterystatus", onBatteryStatus, false);
}
// Handle the batterystatus event
//
function onBatteryStatus(info) {
console.log("Level: " + info.level + " isPlugged: " + info.isPlugged);
}
</script>
</head>
<body onload="onLoad()">
</body>
</html>
menubutton
This is an event that fires when the user presses the menu button.
document.addEventListener("menubutton", yourCallbackFunction, false);
Details
If you need to override the default menu button behaviour you can register an event listenter for the 'menubutton' event.
Typically, you will want to attach an event listener with document.addEventListener
once you receive the PhoneGap 'deviceready' event.
Supported Platforms
- Android
- BlackBerry WebWorks (OS 5.0 and higher)
Quick Example
document.addEventListener("menubutton", onMenuKeyDown, false);
function onMenuKeyDown() {
// Handle the back button
}
Full Example
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"
"http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
<title>PhoneGap Menu Button Example</title>
<script type="text/javascript" charset="utf-8" src="phonegap.js"></script>
<script type="text/javascript" charset="utf-8">
// Call onDeviceReady when PhoneGap is loaded.
//
// At this point, the document has loaded but phonegap.js has not.
// When PhoneGap is loaded and talking with the native device,
// it will call the event `deviceready`.
//
function onLoad() {
document.addEventListener("deviceready", onDeviceReady, false);
}
// PhoneGap is loaded and it is now safe to make calls PhoneGap methods
//
function onDeviceReady() {
// Register the event listener
document.addEventListener("menubutton", onMenuKeyDown, false);
}
// Handle the menu button
//
function onMenuKeyDown() {
}
</script>
</head>
<body onload="onLoad()">
</body>
</html>
searchbutton
This is an event that fires when the user presses the search button on Android.
document.addEventListener("searchbutton", yourCallbackFunction, false);
Details
If you need to override the default search button behaviour on Android you can register an event listener for the 'searchbutton' event.
Typically, you will want to attach an event listener with document.addEventListener
once you receive the PhoneGap 'deviceready' event.
Supported Platforms
- Android
Quick Example
document.addEventListener("searchbutton", onSearchKeyDown, false);
function onSearchKeyDown() {
// Handle the search button
}
Full Example
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"
"http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
<title>PhoneGap Search Button Example</title>
<script type="text/javascript" charset="utf-8" src="phonegap.js"></script>
<script type="text/javascript" charset="utf-8">
// Call onDeviceReady when PhoneGap is loaded.
//
// At this point, the document has loaded but phonegap.js has not.
// When PhoneGap is loaded and talking with the native device,
// it will call the event `deviceready`.
//
function onLoad() {
document.addEventListener("deviceready", onDeviceReady, false);
}
// PhoneGap is loaded and it is now safe to make calls PhoneGap methods
//
function onDeviceReady() {
// Register the event listener
document.addEventListener("searchbutton", onSearchKeyDown, false);
}
// Handle the search button
//
function onSearchKeyDown() {
}
</script>
</head>
<body onload="onLoad()">
</body>
</html>
startcallbutton
This is an event that fires when the user presses the start call button.
document.addEventListener("startcallbutton", yourCallbackFunction, false);
Details
If you need to override the default start call behaviour you can register an event listener for the 'startcallbutton' event.
Typically, you will want to attach an event listener with document.addEventListener
once you receive the PhoneGap 'deviceready' event.
Supported Platforms
- BlackBerry WebWorks (OS 5.0 and higher)
Quick Example
document.addEventListener("startcallbutton", onStartCallKeyDown, false);
function onStartCallKeyDown() {
// Handle the start call button
}
Full Example
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"
"http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
<title>PhoneGap Start Call Button Example</title>
<script type="text/javascript" charset="utf-8" src="phonegap.js"></script>
<script type="text/javascript" charset="utf-8">
// Call onDeviceReady when PhoneGap is loaded.
//
// At this point, the document has loaded but phonegap.js has not.
// When PhoneGap is loaded and talking with the native device,
// it will call the event `deviceready`.
//
function onLoad() {
document.addEventListener("deviceready", onDeviceReady, false);
}
// PhoneGap is loaded and it is now safe to make calls PhoneGap methods
//
function onDeviceReady() {
// Register the event listener
document.addEventListener("startcallbutton", onStartCallKeyDown, false);
}
// Handle the start call button
//
function onStartCallKeyDown() {
}
</script>
</head>
<body onload="onLoad()">
</body>
</html>
endcallbutton
This is an event that fires when the user presses the end call button.
document.addEventListener("endcallbutton", yourCallbackFunction, false);
Details
If you need to override the default end call behaviour you can register an event listener for the 'endcallbutton' event.
Typically, you will want to attach an event listener with document.addEventListener
once you receive the PhoneGap 'deviceready' event.
Supported Platforms
- BlackBerry WebWorks (OS 5.0 and higher)
Quick Example
document.addEventListener("endcallbutton", onEndCallKeyDown, false);
function onEndCallKeyDown() {
// Handle the end call button
}
Full Example
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"
"http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
<title>PhoneGap End Call Button Example</title>
<script type="text/javascript" charset="utf-8" src="phonegap.js"></script>
<script type="text/javascript" charset="utf-8">
// Call onDeviceReady when PhoneGap is loaded.
//
// At this point, the document has loaded but phonegap.js has not.
// When PhoneGap is loaded and talking with the native device,
// it will call the event `deviceready`.
//
function onLoad() {
document.addEventListener("deviceready", onDeviceReady, false);
}
// PhoneGap is loaded and it is now safe to make calls PhoneGap methods
//
function onDeviceReady() {
// Register the event listener
document.addEventListener("endcallbutton", onEndCallKeyDown, false);
}
// Handle the end call button
//
function onEndCallKeyDown() {
}
</script>
</head>
<body onload="onLoad()">
</body>
</html>
volumedownbutton
This is an event that fires when the user presses the volume down button.
document.addEventListener("volumedownbutton", yourCallbackFunction, false);
Details
If you need to override the default volume down behaviour you can register an event listener for the 'volumedownbutton' event.
Typically, you will want to attach an event listener with document.addEventListener
once you receive the PhoneGap 'deviceready' event.
Supported Platforms
- BlackBerry WebWorks (OS 5.0 and higher)
Quick Example
document.addEventListener("volumedownbutton", onVolumeDownKeyDown, false);
function onVolumeDownKeyDown() {
// Handle the volume down button
}
Full Example
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"
"http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
<title>PhoneGap Volume Down Button Example</title>
<script type="text/javascript" charset="utf-8" src="phonegap.js"></script>
<script type="text/javascript" charset="utf-8">
// Call onDeviceReady when PhoneGap is loaded.
//
// At this point, the document has loaded but phonegap.js has not.
// When PhoneGap is loaded and talking with the native device,
// it will call the event `deviceready`.
//
function onLoad() {
document.addEventListener("deviceready", onDeviceReady, false);
}
// PhoneGap is loaded and it is now safe to make calls PhoneGap methods
//
function onDeviceReady() {
// Register the event listener
document.addEventListener("volumedownbutton", onVolumeDownKeyDown, false);
}
// Handle the volume down button
//
function onVolumeDownKeyDown() {
}
</script>
</head>
<body onload="onLoad()">
</body>
</html>
volumeupbutton
This is an event that fires when the user presses the volume up button.
document.addEventListener("volumeupbutton", yourCallbackFunction, false);
Details
If you need to override the default volume up behaviour you can register an event listener for the 'volumeupbutton' event.
Typically, you will want to attach an event listener with document.addEventListener
once you receive the PhoneGap 'deviceready' event.
Supported Platforms
- BlackBerry WebWorks (OS 5.0 and higher)
Quick Example
document.addEventListener("volumeupbutton", onVolumeUpKeyDown, false);
function onVolumeUpKeyDown() {
// Handle the volume up button
}
Full Example
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"
"http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
<title>PhoneGap Volume Up Button Example</title>
<script type="text/javascript" charset="utf-8" src="phonegap.js"></script>
<script type="text/javascript" charset="utf-8">
// Call onDeviceReady when PhoneGap is loaded.
//
// At this point, the document has loaded but phonegap.js has not.
// When PhoneGap is loaded and talking with the native device,
// it will call the event `deviceready`.
//
function onLoad() {
document.addEventListener("deviceready", onDeviceReady, false);
}
// PhoneGap is loaded and it is now safe to make calls PhoneGap methods
//
function onDeviceReady() {
// Register the event listener
document.addEventListener("volumeupbutton", onVolumeUpKeyDown, false);
}
// Handle the volume up button
//
function onVolumeUpKeyDown() {
}
</script>
</head>
<body onload="onLoad()">
</body>
</html>