使用JavaScriptInterface将值从Java发送到javascript

Question

Android App has:

JavaScriptNFCInterface NFCIDConnector = new JavaScriptNFCInterface(this);
    webView.getSettings().setJavaScriptEnabled(true);
    webView.addJavascriptInterface(NFCIDConnector, "Android");

public class JavaScriptNFCInterface {
    public JavaScriptNFCInterface(Context c) {
        mContext = c;
    }
        @JavascriptInterface
        public String getNFCID() {
            return NFCID;
        }

}

And for testing purpose in UI:

<a class="btn btn-primary" href="#" onclick="console.log(Android.getNFCID)" role="button">test</a>

but im receiving only:

chromium﹕ [INFO:CONSOLE(1)] "function () { [native code] }", source: http://192.168.173.216:8082/#/tablet/index (1)

not string with ID.

Answer 1

You are missing parentheses after the function name, so instead of calling it, you are just printing it. You need to replace:

console.log(Android.getNFCID)

with:

console.log(Android.getNFCID())