Catch Webview click on button

In html:

<input type="file" name="files[]" data-picture="2"  id="pic2" class="pic2" onClick="showAndroidToast('identity')">

<script type="text/javascript">
    function showAndroidToast(type) {
        androidPicture.showToast(type);
    }
</script>


In Android:

webView.addJavascriptInterface(new WebAppInterface(this), "androidPicture");

class WebAppInterface {
	Context mContext;
	public static String type;

	/** Instantiate the interface and set the context */
	WebAppInterface(Context c) {
		mContext = c;
	}

	/** Show a toast from the web page */
	@JavascriptInterface
	public void showToast(String type) {
		Log.d("TAG", "Received: "+type);
	}
}