blob: 94db5fa86cf620c54a6001261e97b8031006a4df [file] [log] [blame]
<!--
Licensed to the Apache Software Foundation (ASF) under one
or more contributor license agreements. See the NOTICE file
distributed with this work for additional information
regarding copyright ownership. The ASF licenses this file
to you under the Apache License, Version 2.0 (the
"License"); you may not use this file except in compliance
with the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing,
software distributed under the License is distributed on an
"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
KIND, either express or implied. See the License for the
specific language governing permissions and limitations
under the License.
-->
<!DOCTYPE html>
<html lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<meta name="viewport" content="initial-scale=1.0, maximum-scale=1.0, user-scalable=no, width=device-width">
<meta name="generator" content="joDoc">
<link rel="stylesheet" type="text/css" href="index.css">
<title>PhoneGap API Documentation</title>
</head>
<body>
<div id="header">
<h1>Phone<strong>Gap</strong> Documentation</h1>
<small></small>
</div>
<div id="subheader">
<h1>Accelerometer</h1>
<small>[ SELECT BOX PLACEHOLDER ]</small>
</div>
<div id="sidebar">
<div class="vertical_divider"></div>
<h1>API Reference</h1>
<ul>
<li><a href="phonegap_accelerometer_accelerometer.md.html">Accelerometer</a></li>
<li><a href="phonegap_camera_camera.md.html">Camera</a></li>
<li><a href="phonegap_device_device.md.html">Device</a></li>
<li><a href="phonegap_events_events.md.html">Events</a></li>
<li><a href="phonegap_geolocation_geolocation.md.html">Geolocation</a></li>
<li><a href="phonegap_notification_notification.md.html">Notification</a></li>
</ul>
</div>
<div id="content">
<h1><a name="Accelerometer">Accelerometer</a></h1>
<blockquote>
<p>Captures device motion in the x, y, and z direction.</p>
</blockquote>
<h2>Methods</h2>
<ul>
<li><a href="phonegap_accelerometer_accelerometer.md.html#accelerometer.getCurrentAcceleration">accelerometer.getCurrentAcceleration</a></li>
<li><a href="phonegap_accelerometer_accelerometer.md.html#accelerometer.watchAcceleration">accelerometer.watchAcceleration</a></li>
<li><a href="phonegap_accelerometer_accelerometer.md.html#accelerometer.clearWatch">accelerometer.clearWatch</a></li>
</ul>
<h2>Arguments</h2>
<ul>
<li><a href="phonegap_accelerometer_accelerometer.md.html#accelerometerSuccess">accelerometerSuccess</a></li>
<li><a href="phonegap_accelerometer_accelerometer.md.html#accelerometerError">accelerometerError</a></li>
<li><a href="phonegap_accelerometer_accelerometer.md.html#accelerometerOptions">accelerometerOptions</a></li>
</ul>
<h2>Objects (Read-Only)</h2>
<ul>
<li><a href="phonegap_accelerometer_accelerometer.md.html#Acceleration">Acceleration</a></li>
</ul>
<hr>
<h1><a name="accelerometer.getCurrentAcceleration">accelerometer.getCurrentAcceleration</a></h1>
<p>Get the current acceleration along the x, y, and z axis.</p>
<pre><code>navigator.accelerometer.getCurrentAcceleration(<a href="phonegap_accelerometer_accelerometer.md.html#accelerometerSuccess">accelerometerSuccess</a>, <a href="phonegap_accelerometer_accelerometer.md.html#accelerometerError">accelerometerError</a>);
</code></pre>
<h2>Description</h2>
<p>The accelerometer is a motion sensor that detects the change (delta) in movement relative to the current position. The accelerometer can detect 3D movement along the x, y, and z axis.</p>
<p>The acceleration is returned using the <code><a href="phonegap_accelerometer_accelerometer.md.html#accelerometerSuccess">accelerometerSuccess</a></code> callback function.</p>
<h2>Supported Platforms</h2>
<ul>
<li>iPhone</li>
</ul>
<h2>Quick Example</h2>
<pre><code>function onSuccess(acceleration) {
alert('<a href="phonegap_accelerometer_accelerometer.md.html#Acceleration">Acceleration</a> X: ' + acceleration.x + '\n' +
'<a href="phonegap_accelerometer_accelerometer.md.html#Acceleration">Acceleration</a> Y: ' + acceleration.y + '\n' +
'<a href="phonegap_accelerometer_accelerometer.md.html#Acceleration">Acceleration</a> Z: ' + acceleration.z + '\n';
};
function onError() {
alert('onError!');
};
navigator.<a href="phonegap_accelerometer_accelerometer.md.html#accelerometer.getCurrentAcceleration">accelerometer.getCurrentAcceleration</a>(onSuccess, onError);
</code></pre>
<h2>Full Example</h2>
<pre><code>&lt;!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"
"http://www.w3.org/TR/html4/strict.dtd"&gt;
&lt;html&gt;
&lt;head&gt;
&lt;title&gt;<a href="phonegap_accelerometer_accelerometer.md.html#Acceleration">Acceleration</a> Example&lt;/title&gt;
&lt;script type="text/javascript" charset="utf-8" src="phonegap.js"&gt;&lt;/script&gt;
&lt;script type="text/javascript" charset="utf-8"&gt;
// Wait for PhoneGap to load
//
function onLoad() {
document.addEventListener("<a href="phonegap_events_events.md.html#deviceready">deviceready</a>", onDeviceReady, false);
}
// PhoneGap is ready
//
function onDeviceReady() {
navigator.<a href="phonegap_accelerometer_accelerometer.md.html#accelerometer.getCurrentAcceleration">accelerometer.getCurrentAcceleration</a>(onSuccess, onError);
}
// onSuccess: Get a snapshot of the current acceleration
//
function onSuccess(acceleration) {
alert('<a href="phonegap_accelerometer_accelerometer.md.html#Acceleration">Acceleration</a> X: ' + acceleration.x + '\n' +
'<a href="phonegap_accelerometer_accelerometer.md.html#Acceleration">Acceleration</a> Y: ' + acceleration.y + '\n' +
'<a href="phonegap_accelerometer_accelerometer.md.html#Acceleration">Acceleration</a> Z: ' + acceleration.z + '\n');
}
// onError: Failed to get the acceleration
//
function onError() {
alert('onError!');
}
&lt;/script&gt;
&lt;/head&gt;
&lt;body onload="onLoad()"&gt;
&lt;h1&gt;Example&lt;/h1&gt;
&lt;p&gt;getCurrentAcceleration&lt;/p&gt;
&lt;/body&gt;
&lt;/html&gt;
</code></pre>
<h2>iPhone Quirks</h2>
<ul>
<li>iPhone doesn't have the concept of getting the current acceleration at any given point.</li>
<li>You must watch the acceleration and capture the data at given time intervals.</li>
<li>Thus, the <code>getCurrentAcceleration</code> function will give you the last value reported from a phoneGap <code>watchAccelerometer</code> call.</li>
</ul>
<hr>
<h1><a name="accelerometer.watchAcceleration">accelerometer.watchAcceleration</a></h1>
<p>At a regular interval, get the acceleration along the x, y, and z axis.</p>
<pre><code>var watchID = navigator.accelerometer.watchAcceleration(<a href="phonegap_accelerometer_accelerometer.md.html#accelerometerSuccess">accelerometerSuccess</a>,
<a href="phonegap_accelerometer_accelerometer.md.html#accelerometerError">accelerometerError</a>,
[<a href="phonegap_accelerometer_accelerometer.md.html#accelerometerOptions">accelerometerOptions</a>]);
</code></pre>
<h2>Description</h2>
<p>The accelerometer is a motion sensor that detects the change (delta) in movement relative to the current position. The accelerometer can detect 3D movement along the x, y, and z axis.</p>
<p>The <code><a href="phonegap_accelerometer_accelerometer.md.html#accelerometer.watchAcceleration">accelerometer.watchAcceleration</a></code> gets the device's current acceleration at a regular interval. Each time the <code><a href="phonegap_accelerometer_accelerometer.md.html#Acceleration">Acceleration</a></code> is retrieved, the <code><a href="phonegap_accelerometer_accelerometer.md.html#accelerometerSuccess">accelerometerSuccess</a></code> callback function is executed. Specify the interval in milliseconds via the <code>frequency</code> parameter in the <code>acceleratorOptions</code> object.</p>
<p>The returned watch ID references references the accelerometer watch interval. The watch ID can be used with <code><a href="phonegap_accelerometer_accelerometer.md.html#accelerometer.clearWatch">accelerometer.clearWatch</a></code> to stop watching the accelerometer.</p>
<h2>Supported Platforms</h2>
<ul>
<li>iPhone</li>
</ul>
<h2>Quick Example</h2>
<pre><code>function onSuccess(acceleration) {
alert('<a href="phonegap_accelerometer_accelerometer.md.html#Acceleration">Acceleration</a> X: ' + acceleration.x + '\n' +
'<a href="phonegap_accelerometer_accelerometer.md.html#Acceleration">Acceleration</a> Y: ' + acceleration.y + '\n' +
'<a href="phonegap_accelerometer_accelerometer.md.html#Acceleration">Acceleration</a> Z: ' + acceleration.z + '\n');
};
function onError() {
alert('onError!');
};
var options = { frequency: 3000 }; // Update every 3 seconds
var watchID = navigator.<a href="phonegap_accelerometer_accelerometer.md.html#accelerometer.watchAcceleration">accelerometer.watchAcceleration</a>(onSuccess, onError, options);
</code></pre>
<h2>Full Example</h2>
<pre><code>&lt;!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"
"http://www.w3.org/TR/html4/strict.dtd"&gt;
&lt;html&gt;
&lt;head&gt;
&lt;title&gt;<a href="phonegap_accelerometer_accelerometer.md.html#Acceleration">Acceleration</a> Example&lt;/title&gt;
&lt;script type="text/javascript" charset="utf-8" src="phonegap.js"&gt;&lt;/script&gt;
&lt;script type="text/javascript" charset="utf-8"&gt;
// The watch id references the current `watchAcceleration`
var watchID = null;
// Wait for PhoneGap to load
//
function onLoad() {
document.addEventListener("<a href="phonegap_events_events.md.html#deviceready">deviceready</a>", onDeviceReady, false);
}
// PhoneGap is ready
//
function onDeviceReady() {
startWatch();
}
// Start watching the acceleration
//
function startWatch() {
// Update acceleration every 3 seconds
var options = { frequency: 3000 };
watchID = navigator.<a href="phonegap_accelerometer_accelerometer.md.html#accelerometer.watchAcceleration">accelerometer.watchAcceleration</a>(onSuccess, onError, options);
}
// Stop watching the acceleration
//
function stopWatch() {
if (watchID) {
navigator.<a href="phonegap_accelerometer_accelerometer.md.html#accelerometer.clearWatch">accelerometer.clearWatch</a>(watchID);
watchID = null;
}
}
// onSuccess: Get a snapshot of the current acceleration
//
function onSuccess(acceleration) {
var element = document.getElementById('accelerometer');
element.innerHTML = '<a href="phonegap_accelerometer_accelerometer.md.html#Acceleration">Acceleration</a> X: ' + acceleration.x + '&lt;br /&gt;' +
'<a href="phonegap_accelerometer_accelerometer.md.html#Acceleration">Acceleration</a> Y: ' + acceleration.y + '&lt;br /&gt;' +
'<a href="phonegap_accelerometer_accelerometer.md.html#Acceleration">Acceleration</a> Z: ' + acceleration.z + '&lt;br /&gt;';
}
// onError: Failed to get the acceleration
//
function onError() {
alert('onError!');
}
&lt;/script&gt;
&lt;/head&gt;
&lt;body onload="onLoad()"&gt;
&lt;div id="accelerometer"&gt;Waiting for accelerometer...&lt;/div&gt;
&lt;/body&gt;
&lt;/html&gt;
</code></pre>
<h2> iPhone Quirks</h2>
<ul>
<li>At the interval requested, PhoneGap will call the success callback function and pass the accelerometer results.</li>
<li>However, in requests to the device PhoneGap restricts the interval to minimum of every 40ms and a maximum of every 1000ms.
<ul>
<li>For example, if you request an interval of 3 seconds (3000ms), PhoneGap will request an interval of 1 second from the device but invoke the success callback at the requested interval of 3 seconds.</li>
</ul>
</li>
</ul>
<hr>
<h1><a name="accelerometer.clearWatch">accelerometer.clearWatch</a></h1>
<p>Stop watching the <code><a href="phonegap_accelerometer_accelerometer.md.html#Acceleration">Acceleration</a></code> referenced by the watch ID parameter.</p>
<pre><code>navigator.<a href="phonegap_accelerometer_accelerometer.md.html#accelerometer.clearWatch">accelerometer.clearWatch</a>(watchID);
</code></pre>
<ul>
<li>
<strong>watchID</strong>: The ID returned by <code><a href="phonegap_accelerometer_accelerometer.md.html#accelerometer.watchAcceleration">accelerometer.watchAcceleration</a></code>.</li>
</ul>
<h2>Supported Platforms</h2>
<ul>
<li>iPhone</li>
</ul>
<h2>Quick Example</h2>
<pre><code>var watchID = navigator.<a href="phonegap_accelerometer_accelerometer.md.html#accelerometer.watchAcceleration">accelerometer.watchAcceleration</a>(onSuccess, onError, options);
// ... later on ...
navigator.<a href="phonegap_accelerometer_accelerometer.md.html#accelerometer.clearWatch">accelerometer.clearWatch</a>(watchID);
</code></pre>
<h2>Full Example</h2>
<pre><code>&lt;!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"
"http://www.w3.org/TR/html4/strict.dtd"&gt;
&lt;html&gt;
&lt;head&gt;
&lt;title&gt;<a href="phonegap_accelerometer_accelerometer.md.html#Acceleration">Acceleration</a> Example&lt;/title&gt;
&lt;script type="text/javascript" charset="utf-8" src="phonegap.js"&gt;&lt;/script&gt;
&lt;script type="text/javascript" charset="utf-8"&gt;
// The watch id references the current `watchAcceleration`
var watchID = null;
// Wait for PhoneGap to load
//
function onLoad() {
document.addEventListener("<a href="phonegap_events_events.md.html#deviceready">deviceready</a>", onDeviceReady, false);
}
// PhoneGap is ready
//
function onDeviceReady() {
startWatch();
}
// Start watching the acceleration
//
function startWatch() {
// Update acceleration every 3 seconds
var options = { frequency: 3000 };
watchID = navigator.<a href="phonegap_accelerometer_accelerometer.md.html#accelerometer.watchAcceleration">accelerometer.watchAcceleration</a>(onSuccess, onError, options);
}
// Stop watching the acceleration
//
function stopWatch() {
if (watchID) {
navigator.<a href="phonegap_accelerometer_accelerometer.md.html#accelerometer.clearWatch">accelerometer.clearWatch</a>(watchID);
watchID = null;
}
}
// onSuccess: Get a snapshot of the current acceleration
//
function onSuccess(acceleration) {
var element = document.getElementById('accelerometer');
element.innerHTML = '<a href="phonegap_accelerometer_accelerometer.md.html#Acceleration">Acceleration</a> X: ' + acceleration.x + '&lt;br /&gt;' +
'<a href="phonegap_accelerometer_accelerometer.md.html#Acceleration">Acceleration</a> Y: ' + acceleration.y + '&lt;br /&gt;' +
'<a href="phonegap_accelerometer_accelerometer.md.html#Acceleration">Acceleration</a> Z: ' + acceleration.z + '&lt;br /&gt;';
}
// onError: Failed to get the acceleration
//
function onError() {
alert('onError!');
}
&lt;/script&gt;
&lt;/head&gt;
&lt;body onload="onLoad()"&gt;
&lt;div id="accelerometer"&gt;Waiting for accelerometer...&lt;/div&gt;
&lt;button onclick="stopWatch();"&gt;Stop Watching&lt;/button&gt;
&lt;/body&gt;
&lt;/html&gt;
</code></pre>
<hr>
<h1><a name="Acceleration">Acceleration</a></h1>
<p>Contains <code><a href="phonegap_accelerometer_accelerometer.md.html#Accelerometer">Accelerometer</a></code> data captured at a specific point in time.</p>
<h2>Properties</h2>
<ul>
<li>
<strong>x:</strong> Amount of motion on the x-axis. Range [0, 1] (<code>Number</code>)</li>
<li>
<strong>y:</strong> Amount of motion on the y-axis. Range [0, 1] (<code>Number</code>)</li>
<li>
<strong>z:</strong> Amount of motion on the z-axis. Range [0, 1] (<code>Number</code>)</li>
<li>
<strong>timestamp:</strong> Creation timestamp in milliseconds. (<code>DOMTimeStamp</code>)</li>
</ul>
<h2>Description</h2>
<p>This object is created and populated by PhoneGap, and returned by an <code><a href="phonegap_accelerometer_accelerometer.md.html#Accelerometer">Accelerometer</a></code> method.</p>
<h2>Supported Platforms</h2>
<ul>
<li>Untested</li>
</ul>
<h2>Quick Example</h2>
<pre><code>function onSuccess(acceleration) {
alert('<a href="phonegap_accelerometer_accelerometer.md.html#Acceleration">Acceleration</a> X: ' + acceleration.x + '\n' +
'<a href="phonegap_accelerometer_accelerometer.md.html#Acceleration">Acceleration</a> Y: ' + acceleration.y + '\n' +
'<a href="phonegap_accelerometer_accelerometer.md.html#Acceleration">Acceleration</a> Z: ' + acceleration.z + '\n';
};
function onError() {
alert('onError!');
};
navigator.<a href="phonegap_accelerometer_accelerometer.md.html#accelerometer.getCurrentAcceleration">accelerometer.getCurrentAcceleration</a>(onSuccess, onError);
</code></pre>
<h2>Full Example</h2>
<pre><code>&lt;!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"
"http://www.w3.org/TR/html4/strict.dtd"&gt;
&lt;html&gt;
&lt;head&gt;
&lt;title&gt;<a href="phonegap_accelerometer_accelerometer.md.html#Acceleration">Acceleration</a> Example&lt;/title&gt;
&lt;script type="text/javascript" charset="utf-8" src="phonegap.js"&gt;&lt;/script&gt;
&lt;script type="text/javascript" charset="utf-8"&gt;
// Wait for PhoneGap to load
//
function onLoad() {
document.addEventListener("<a href="phonegap_events_events.md.html#deviceready">deviceready</a>", onDeviceReady, false);
}
// PhoneGap is ready
//
function onDeviceReady() {
navigator.<a href="phonegap_accelerometer_accelerometer.md.html#accelerometer.getCurrentAcceleration">accelerometer.getCurrentAcceleration</a>(onSuccess, onError);
}
// onSuccess: Get a snapshot of the current acceleration
//
function onSuccess() {
alert('<a href="phonegap_accelerometer_accelerometer.md.html#Acceleration">Acceleration</a> X: ' + acceleration.x + '\n' +
'<a href="phonegap_accelerometer_accelerometer.md.html#Acceleration">Acceleration</a> Y: ' + acceleration.y + '\n' +
'<a href="phonegap_accelerometer_accelerometer.md.html#Acceleration">Acceleration</a> Z: ' + acceleration.z + '\n';
}
// onError: Failed to get the acceleration
//
function onError() {
alert('onError!');
}
&lt;/script&gt;
&lt;/head&gt;
&lt;body onload="onLoad()"&gt;
&lt;h1&gt;Example&lt;/h1&gt;
&lt;p&gt;getCurrentAcceleration&lt;/p&gt;
&lt;/body&gt;
&lt;/html&gt;
</code></pre>
<hr>
<h1><a name="accelerometerSuccess">accelerometerSuccess</a></h1>
<p>onSuccess callback function that provides the <a href="phonegap_accelerometer_accelerometer.md.html#Acceleration">Acceleration</a> information.</p>
<pre><code>function(acceleration) {
// Do something
}
</code></pre>
<h2>Parameters</h2>
<ul>
<li>
<strong>acceleration:</strong> The acceleration at a single moment in time. (<a href="phonegap_accelerometer_accelerometer.md.html#Acceleration">Acceleration</a>)</li>
</ul>
<h2>Example</h2>
<pre><code>function onSuccess(acceleration) {
alert('<a href="phonegap_accelerometer_accelerometer.md.html#Acceleration">Acceleration</a> X: ' + acceleration.x + '\n' +
'<a href="phonegap_accelerometer_accelerometer.md.html#Acceleration">Acceleration</a> Y: ' + acceleration.y + '\n' +
'<a href="phonegap_accelerometer_accelerometer.md.html#Acceleration">Acceleration</a> Z: ' + acceleration.z + '\n';
};
</code></pre>
<hr>
<h1><a name="accelerometerError">accelerometerError</a></h1>
<p>onError callback function for acceleration functions.</p>
<pre><code>function() {
// Handle the error
}
</code></pre>
<hr>
<h1><a name="accelerometerOptions">accelerometerOptions</a></h1>
<p>An optional parameter to customize the retrieval of the accelerometer.</p>
<h2>Options</h2>
<ul>
<li>
<strong>frequency:</strong> How often to retrieve the <code><a href="phonegap_accelerometer_accelerometer.md.html#Acceleration">Acceleration</a></code> in milliseconds. <em>(Number)</em> (Default: 10000)</li>
</ul>
</div>
</body>
</html>