Using jqMath in Android application

StackOverflow https://stackoverflow.com/questions/22127355

  •  18-10-2022
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문제

I'am newbie in Android programming and I want to us jqMath to display some math formulas in WebView.

Here is my code:

    WebView webView = (WebView)findViewById(R.id.webView1);
WebSettings webSettings = webView.getSettings();
    webSettings.setJavaScriptEnabled(true);
String js = "<html><head>"
    + "<link rel='stylesheet' href='jqmath-0.4.0.css'>"
    + "<script src='jquery-1.4.3.min.js'></script>"
    + "<script src='jqmath-etc-0.4.0.min.js'></script>"
    + "</head><body>"
    + "<script>var s = '$ax^2+bx+c=0$ with $a≠0$';M.parseMath(s);document.write(s);</script></body>";
webView.loadData(js,  "text/html",  "UTF-8");

What is the problem of this code?,

UPDATE well my problem have solved, but I also changed loadData function to loadDataWithBaseURL I mention just for reference if anyone else have same problem

도움이 되었습니까?

해결책

You need to specify the path correctly for the css,js files as following:

WebView webView = (WebView)findViewById(R.id.webView1);
WebSettings webSettings = webView.getSettings();
webSettings.setJavaScriptEnabled(true);
String path="file:///android_asset/";
String js = "<html><head>"
+ "<link rel='stylesheet' href='"+path+"jqmath-0.4.0.css'>"
+ "<script src='"+path+"jquery-1.4.3.min.js'></script>"
+ "<script src='"+path+"jqmath-etc-0.4.0.min.js'></script>"
+ "</head><body>"
+ "<script>var s = '$ax^2+bx+c=0$ with $a≠0$';M.parseMath(s);document.write(s);</script></body>";
webView.loadData(js,  "text/html",  "UTF-8");

note that the files should be in assets folder.

다른 팁

the location of js lib in assets folder does not match your src declaration assuming that you placed the js libs in assets/js

After specifying the path like Khalid said, the following worked for me

webView.loadDataWithBaseURL( "file:///android_asset/" ,js,  "text/html",  "UTF-8", null);

instead of webView.loadData method.

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