phonegap 仿照维信实现摇一摇源码 - PhoneGap中文网

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>phonegap_device_network_notification01</title>
<link href="../jquery.mobile-1.3.2.css" rel="stylesheet" type="text/css"/>
<script src="../jquery.js" type="text/javascript"></script>
<script src="../jquery.mobile-1.3.2.js" type="text/javascript"></script>
<script src="../cordova.js" type="text/javascript"></script>
<script type="text/javascript" charset="utf-8">
var watchID = null;
document.addEventListener("deviceready", onDeviceReady, false); //deviceready
var oldValue = {
x: null,
y: null,
z: null
}
function onDeviceReady() {
startWatch();
}
function startWatch() {
var options = { frequency: 300 };
watchID = navigator.accelerometer.watchAcceleration(onSuccess, onError, options);
}
function stopWatch() {
if (watchID) {
navigator.accelerometer.clearWatch(watchID);
watchID = null;
}
}
// 获取加速度信息成功后的回调函数
function onSuccess(newValue) {
var changes = {},
bound = 2;
if (oldValue.x !== null) {
changes.x = Math.abs(oldValue.x-newValue.x);
changes.y = Math.abs(oldValue.y-newValue.y);
changes.z = Math.abs(oldValue.z-newValue.z);
}
if ((changes.x > bound && changes.y > bound) || (changes.x > bound && changes.z >bound)|| (changes.y > bound && changes.z >bound)) {
alert('检测到手机晃动');
}
oldValue = {
x: newValue.x,
y: newValue.y,
z: newValue.z
}
var element = document.getElementById('accelerometer');
element.innerHTML = 'Acceleration X: ' + newValue.x + '<br />' +
'Acceleration Y: ' + newValue.y + '<br />' +
'Acceleration Z: ' + newValue.z + '<br />' +
'Timestamp: ' + newValue.timestamp + '<br />';
}
// 获取加速度信息失败后的回调函数
function onError() {
alert('onError!');
}
</script>
</head>
<body>
<div data-role="page">
<div data-role="header">
<h1>PhoneGap100实战</h1>
</div>
<div data-role="content">
<div id="accelerometer">监测加速度信息中...</div>
<button onclick="stopWatch();">停止监测加速度信息</button>
</div>
<div data-role="footer">
<h4> </h4>
</div>
</div>
</body>
</html>

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