Android and JavaScript Interactive report: Android uncaught Referenceerror:

Possible causes are as follows:

1, the HTML page on the JavaScript write problem, you can first debug in the HTML, such as the elimination of grammar problems;

2, the use of Webview.loadurl call when the string to be spelled correctly, especially when the parameter is passed, the format can be as follows:

Webview.loadurl ("Javascript:showdata ('" +json+ ")");

3, when the call may be the HTML page has not been loaded, using the handler post method, for example:

Private Handler Mhandler = new Handler ();

Mhandler.post (New Runnable () {
@Override
public void Run () {
Webview.loadurl ("Javascript:showdata ('" +json+ ")");

}
});

It can also be:

Webview.setwebviewclient (New Webviewclient () {
@Override
public void onpagefinished (WebView view, String URL) {
super.onpagefinished (view, URL);
Webview.loadurl ("Javascript:showdata (1)");
}
});

4. If the JavaScript alert does not pop out, set:

Webview.setwebchromeclient (New Webchromeclient () {});

No technical content, let's record.

Android and JavaScript Interactive report: Android uncaught Referenceerror: