目前版本的Titanium的一个弱点就是不能画图!这回我们说说通过
flot在Titanium中画图表。
flot的下载
flot的主页:
http://code.google.com/p/flot/
下载flot-0.7.zip后,把以下文件拷贝到自己的工程中:
flot的测试
作成以下flot测试用的plot_window.js:
var win = Ti.UI.currentWindow;
var webView = Ti.UI.createWebView({
url: 'plot.html'
});
win.add(webView);
其中WebView中表示的plot.html文件如下:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>Flot Examples</title>
<link href="layout.css" rel="stylesheet" type="text/css">
<!--[if lte IE 8]><script language="javascript" type="text/javascript" src="../excanvas.min.js"></script><![endif]-->
<script language="javascript" type="text/javascript" src="jquery.js"></script>
<script language="javascript" type="text/javascript" src="jquery.flot.js"></script>
</head>
<body>
<h1>Data Graph</h1>
<div id="graph" style="width:310px;height:240px;"></div>
<script type="text/javascript">
var weights = [[1301270400000,0],[1301875200000,8.25],[1302480000000,22],[1303084800000,29],[1303689600000,36.5]];
var ticks = [1301270400000,1301875200000,1302480000000,1303084800000,1303689600000];
var setting = {
series: {
lines: { show:true},
points: { show:true}
},
xaxis: {
mode:"time",
timeformat:"%m/%d",
tickSize: [7,"day"],
ticks: ticks
},
yaxis: {
ticks: 10,
min: 0,
},
grid: {
backgroundColor: { colors: ["#fff","#eee"] },
}
};
$.plot($("#graph"),[{data: weights, color: 2}], setting);
</script>
</body>
</html>
运行之后看看效果图:
在TableView中表示图表
var graphButton = Ti.UI.createButton({title: 'Graph'});
graphButton.addEventListener(
'click', function () {
if (records.length > 0) {
var weights = "[";
var ticks = "[";
for (i = records.length-1; i >= 0; i--) {
weights = weights + "[" + records[i].at.getTime() +","+records[i].weight+"],";
ticks = ticks + records[i].at.getTime() + ",";
}
weights = weights + "]"; ticks = ticks + "]";
var graphWindow = Ti.UI.createWindow({
url: 'plot_window.js',
weights: weights,
ticks: ticks
}
);
Ti.UI.currentTab.open(graphWindow);
}
}
);
win.leftNavButton = graphButton;
修改plot_window.js
webView.addEventListener('load', function(){
webView.evalJS('weights =' + win.weights + ';');
webView.evalJS('ticks =' + win.ticks + ';');
webView.evalJS('setting.xaxis.ticks = ticks;');
webView.evalJS('$.plot($("#graph"),[{data: weights, color: 2}], setting);');
});
运行之后,按下TableView左上角的Graph按钮后,看看效果图: