How to use WebView.addJavascriptInterface to bind java class with javascript function format as "A.B.func()"
I want to support some self-define JavaScript interface with format "A.B.func()" on my app's WebView activity.
Here is a sample
The web page's html&js code is such as:
<html>
<body>
<script type="text/javascript">
document.write("B.func1() return " + A.B.func());
</script>
</body>
</html>
And my java code is such as:
public class MyDemo extends Activity {
private WebView mWebView;
public void onCreate(Bundle savedInstanceState) {
...
mWebView = (WebView)findViewById(R.id.webView1);
mWebView.getSettings().setJavaScriptEnabled(true);
mWebView.addJavascriptInterface(new AClass(), "A");
mWebView.loadUrl("file:///android_asset/mydemo.html");
}
final class AClass {
final class BClass {
BClass() {}
int func() { return 1; }
}
public BClass B = new BClass();
AClass() {}
}
}
But when I run my app on simulator it can't run on right 开发者_如何学运维way. And the LogCat send warning to me such as:
TypeError : Result of expression 'A.B' [undefined] is not an object. at file:///android_asset/mydemo.html
So my question is:
1. if I want to bind javascript interface format as "A.B.func()" to my java class, how can I do it? 2. if I want to get javascript class's property directly, not by function calling, how can I do it? a javascript sample to show Q2 use "var prop = A.property" not use "var prop = A.getProperty()"Expect your help! Thank you!
I don't think you can. You could just add methods in A, like b_doSomething(){B.doSomething()} to "forward" your calls, and call those from javascript.
As for accessing properties, I'm not sure it's possible, the Javascript Interface is made for calling methods (pretty much like a normal Java Interface, I guess).
Eclispe show message in LogCat "Uncaught TypeError: Object [object Object] has no method 'toast'". But in phone it works successfully...
<script>
function doHemant() {
jse.doThis();
}
</script>
<input type="button" value="Toast" onClick="doHemant();" /> <br />
wv.addJavascriptInterface(new JavaScriptExtensions(), "jse");
class JavaScriptExtensions
{
public void doThis()
{
Toast.makeText(MainActivity.this, "Wata Toast...", TOAST_LONG).show();
}
}
加载中,请稍侯......
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