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PhoneGap学习笔记(三) 加速计、罗盘、地理位置

加速计方法

 var watchID=navigator.accelerometer.watchAcceleration(onSuccess,onError,{frequency:500});

第一个参数为成功回调,第二个为失败回调,第三个为参数,表示每隔多少毫秒获取一次数据,方法返回一个ID

该ID用户清除加速计监听:

navigator.accelerometer.clearWatch(watchID);

加速计获取加速数据成功后会调用onSuccess方法

var msg=document.getElementById("msg");var x=document.getElementById("x");var y=document.getElementById("y");var z=document.getElementById("z");function onSuccess(acceleration){
msg.innerHTML=acceleration.timestamp; x.innerHTML
=acceleration.x; y.innerHTML=acceleration.y; z.innerHTML=acceleration.z;}

 罗盘方法:

var watchID=navigator.compass.watchHeading(onSuccess,onError,{frequency:500});

清除监听

navigator.compass.clearWatch(watchID);

罗盘获取加速数据成功后会调用onSuccess方法

function onSuccess(heading){x.innerHTML=heading.magneticHeading;}

地理位置:

function init(){   var watchID=navigator.geolocation.watchPosition(onSuccess,onError,{frequency:500});  //navigator.geolocation.clearWatch(watchID);}function onSuccess(position){    msg.innerHTML=‘纬度: ‘    + position.coords.latitude          + ‘\n‘ +          ‘经度: ‘            + position.coords.longitude         + ‘\n‘ +          ‘高度: ‘            + position.coords.altitude          + ‘\n‘ +          ‘经纬度读取经度(米):‘ + position.coords.accuracy          + ‘\n‘ +          ‘高度读取经度(米): ‘  + position.coords.altitudeAccuracy  + ‘\n‘ +          ‘方向: ‘            + position.coords.heading           + ‘\n‘ +          ‘速度: ‘            + position.coords.speed             + ‘\n‘ +          ‘时间戳: ‘          + position.timestamp                + ‘\n‘;}function one rror(){    }

 

PhoneGap学习笔记(三) 加速计、罗盘、地理位置