首先是x，y，z轴的加速度统计，利用四个数组记录，并长度为偶数时生成图表
var x=[]; var y=[]; var z=[]; var t=[];
document.addEventListener( "plusready", function(){ // 扩展API加载完毕，现在可以正常调用扩展API var acc = document.getElementById("acc"); plus.accelerometer.watchAcceleration( function ( a ) { x.push(a.xAxis); y.push(a.yAxis); z.push(a.zAxis); t.push(x.length); acc.innerText = "x:" + a.xAxis + " y:" + a.yAxis + " z:" + a.zAxis+" "+x.length; if(x.length%2==0){ line(); } }, function ( e ) { alert( "Acceleration error: " + e.message ); }, {frequency:1000} ); // 设置更新间隔时间为1s }, false );
上面的全代码
<script type="text/javascript">
var x=[];
var y=[];
var z=[];
var t=[];
var line = function(){
var dom = document.getElementById("main");
var myChart = echarts.init(dom);
option = {
tooltip: {
trigger: 'item',
formatter: '{a} <br/>{b} : {c}'
},
xAxis: {
type: 'category',
name: 'x',
splitLine: {show: false},
data: t
},
grid: {
left: '3%',
right: '4%',
bottom: '3%',
containLabel: true
},
yAxis: {
},
series: [
{
name: 'x',
type: 'line',
data: x
},
{
name: 'y',
type: 'line',
data: y
},
{
name: 'z',
type: 'line',
data: z
}
]
};
myChart.setOption(option, true);
};
document.addEventListener( "plusready", function(){
// 扩展API加载完毕，现在可以正常调用扩展API
var acc = document.getElementById("acc");
plus.accelerometer.watchAcceleration( function ( a ) {
x.push(a.xAxis);
y.push(a.yAxis);
z.push(a.zAxis);
t.push(x.length);
acc.innerText = "x:" + a.xAxis + "
y:" + a.yAxis + "
z:" + a.zAxis+"
"+x.length;
if(x.length%2==0){
line();
}
}, function ( e ) {
alert( "Acceleration error: " + e.message );
}, {frequency:1000} ); // 设置更新间隔时间为1s
}, false );
</script>
<head> <meta charset="utf-8"/> <meta name="viewport" content="initial-scale=1.0, maximum-scale=1.0, user-scalable=no"/> <title>Accelerometer Example</title> <script src="js/echarts.min.js"></script> </head> <body> Acceleration:<br/> <p id="acc"></p> <div id="main" style=" 350px;height:300px;"></div> </body> <script> document.addEventListener("plusready", function() { // 注册返回按键事件 plus.key.addEventListener('backbutton', function() { // 事件处理 window.history.back(); }, false); }); </script>
