Link inside android webview is opened twice - php

Question

I'm having a weird problem with android's webview. I load a page to the webview which has a link in it. I have set the webview to open that link in the same webview (not on a browser). When the next page is opened it writes some stuff to mysql. If an user has already opened that second page on a same day, the user gets redirected to the first page and no stuff is written to mysql. I noticed that in 1 out of 3-4 times on first situation pressing the link writes the stuff to mysql twice (with a same timestamp) and redirects the user right away to first page. So it seems that when the link is clicked the url is opened twice in a row. Everything works as supposed on my computer's browsers (safari, firefox and chrome). I found some article that said that empty src-fields on images can cause this but there are no empty src-fields in my php/html code.
Webview is set like this:
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_description);
WebViewClient yourWebClient = new WebViewClient()
{
public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) {
webView.loadUrl("file:///android_asset/404.html");
}
#Override
public boolean shouldOverrideUrlLoading(WebView view, String url)
{
if ( url.contains("google") == false ) {
webView.loadUrl(url);
return false;
}
else {
Intent i = new Intent(Intent.ACTION_VIEW, Uri.parse(url));
startActivity(i);
return true;
}
}
};
webView = (WebView) findViewById(R.id.description);
webView.getSettings().setJavaScriptEnabled(true);
if (Build.VERSION.SDK_INT >= 11){
webView.setLayerType(View.LAYER_TYPE_SOFTWARE, null);
}
String url = (MainActivity.URL+"app/description.php?tagid="+tagId+"&screenwidth="+viewPortWidth+"&screenheight="+viewPortHeight+"&deviceid="+MainActivity.myDeviceId+"&lang="+MainActivity.myLanguage+"&os=android);
webView.setWebViewClient(yourWebClient);
webView.loadUrl(url);
}
My link is just a typical div inside an anchor tag (written in php):
echo '<a href="description.php?type='.$type.'&screenwidth='.$screenWidth.'&screenheight='.$screenHeight.'&tagid='.$tagid.'&no=1&deviceid='.$deviceid.'&lang='.$language.'">
<div class="redbutton">'.$lang['NO'].'</div></a>';

Answer 1

Actually only return false, webpage will automatically be loaded in WebView. No need to use webView.loadUrl();.
if ( url.contains("google") == false ) {
return false;
}
Give it a try and let me know if doesn't work.
As Documentation states -
while return false means the current WebView handles the url

Answer 2

Ok I found the reason for this. This was the cause:
#Override
public boolean shouldOverrideUrlLoading(WebView view, String url)
{
if ( url.contains("google") == false ) {
webView.loadUrl(url);
return false; // <----THIS LINE
}
else {
Intent i = new Intent(Intent.ACTION_VIEW, Uri.parse(url));
startActivity(i);
return false;
}
}
That should have returned true. I found this out by testing with this:
#Override
public void onPageFinished(WebView view, String url)
{
super.onPageFinished(view, url);
String url_new = view.getUrl();
Log.v("","Webview url: "+url_new);
}
I noticed that it printed out the url twice every time that some link was pressed, but it didn't do that when the webview was loaded first time. When I changed the return statement to true it only printed out once per click as it's supposed to do.