我创建使用PhoneGap的android.I都写在创建PDF java.Code文件中的代码创建的HTML字符串pdf文件一个示例应用程序,无法从phonegap android调用java方法?
public class PdfGenerator
{
private WebView mAppView;
private DroidGap mGap;
public PdfGenerator(DroidGap gap, WebView view)
{
mAppView = view;
mGap = gap;
}
public void generatePDF()
{
File root = Environment.getExternalStorageDirectory();
File gpxfile = new File(root, "test.pdf");
System.out.println("Path ::::"+gpxfile);
try{
Document document = new Document(PageSize.LETTER);
PdfWriter.getInstance(document, new FileOutputStream(gpxfile));
document.open();
document.addAuthor("Real Gagnon");
document.addCreator("Real's HowTo");
document.addSubject("Thanks for your support");
document.addCreationDate();
document.addTitle("Please read this");
HTMLWorker htmlWorker = new HTMLWorker(document);
String str = "<html><head></head><body>"+
"<a href='http://www.rgagnon.com/howto.html'><b>Real's HowTo</b></a>" +
"<h1>Show your support</h1>" +
"<p>It DOES cost a lot to produce this site - in ISP storage and transfer fees, " +
"in personal hardware and software costs to set up test environments, and above all," +
"the huge amounts of time it takes for one person to design and write the actual content." +
"<p>If you feel that effort has been useful to you, perhaps you will consider giving something back?" +
"<p>Donate using PayPal® to [email protected]" +
"<p>Contributions via PayPal are accepted in any amount " +
"<P><br><table border='1'><tr><td>Java HowTo<tr>" +
"<td bgcolor='red'>Javascript HowTo<tr><td>Powerbuilder HowTo</table>" +
"</body></html>";
htmlWorker.parse(new StringReader(str));
document.close();
System.out.println("Done");
}
catch (Exception e) {
e.printStackTrace();
}
}
}
我勉类代码,
public class MainActivity extends DroidGap
{
PdfGenerator pdf;
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
super.init();
pdf = new PdfGenerator(this, appView);
appView.addJavascriptInterface(pdf, "PdfGenerator");
super.loadUrl("file:///android_asset/www/test.html");
}
}
Javascript代码,
<html>
<head>
<meta name="viewport" content="width=320; user-scalable=no" />
<meta http-equiv="Content-type" content="text/html; charset=utf-8">
<script type="text/javascript" charset="utf-8" src="cordova.js"></script>
<script>
function pdf()
{
document.addEventListener("deviceReady", deviceReady, false);
}
function creatfile()
{
window.PdfGenerator.generatePDF();
}
function deviceReady() {
window.PdfGenerator.generatePDF();
}
</script>
</head>
<body>
<input type="submit" onclick="pdf()" value="IMEI" />
</body>
焕我从JavaScript调用我得到了以下错误generatePDF,
Uncaught TypeError: Cannot call method 'generatePDF' of undefined
请帮帮我。
我建议你在谷歌搜索。此外,我很确定这个问题已经得到解答。 这不是在js代码中调用java函数的方法。 有一个函数调用cordova.exec。请看看文档。 – Larta
Ditto Larta。查看插件上的文档:http://cordova.apache.org/docs/en/3.5.0/guide_hybrid_plugins_index.md.html#Plugin%20Development%20Guide –
我只有谷歌的代码。它实际上工作很好 –