PhoneGap模仿微信摇一摇功能

<!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>&nbsp;</h4>
        </div>
</div>

</body>
</html>

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原文地址：https://www.cnblogs.com/LO-ME/p/4574485.html