Webview in background using service but location not working

I was trying to make the webview send geo-location in in background with this code I have below. No luck so far but thesame code works fine in activity
`

mWebView = new WebView(getApplicationContext());
//mWebView.setListener(this, this);
mWebView.setListener(new Activity(), this);
mWebView.setGeolocationEnabled(true);
mWebView.setMixedContentAllowed(true);
mWebView.setCookiesEnabled(true);
mWebView.setThirdPartyCookiesEnabled(true);
mWebView.setWebViewClient(new WebViewClient() {

/*
@Override
public void onPageFinished(WebView view, String url) {
// Toast.makeText(MainActivity.this, "Finished loading", Toast.LENGTH_SHORT).show();

}*/

});
mWebView.setWebChromeClient(new WebChromeClient() {

@Override
public void onReceivedTitle(WebView view, String title) {
super.onReceivedTitle(view, title);
Toast.makeText(MainActivity.this, title, Toast.LENGTH_SHORT).show();
}

});

mWebView.addHttpHeader("X-Requested-With", "");
mWebView.getSettings().setPluginState(WebSettings.PluginState.ON);
mWebView.getSettings().setPluginState(WebSettings.PluginState.ON_DEMAND);
mWebView.setWebViewClient(new MyWebViewClient());
mWebView.getSettings().setJavaScriptEnabled(true);

mWebView.loadUrl(TEST_PAGE_URL);

`

Please help or positive director will be appreciated