Dead loop in android webview backkey for redirect href link

Question

I got to a dead loop in Android webview application with backkey while dealing with redirect links.

For example, when my webview started, it goes to link0.

In l

Answer 1

Annoying redirects get into the backforward history. Detect when url loading is triggered by the user, and add those to the backstack instead.

private List<String> previous = new ArrayList<String>();
private String mLastUrl;
webview.setWebViewClient(new WebViewClient() {
    @Override
    public void onPageFinished(WebView view, String url) {
        Log.i("DebugDebug", "OnPageFinished " + url);
        mLastUrl = url;
        super.onPageFinished(view, url);
    }
});

webview.setOnTouchListener(new View.OnTouchListener() {
    @Override
    public boolean onTouch(View view, MotionEvent motionEvent) {
        WebView.HitTestResult hr  = ((WebView)view).getHitTestResult();
        if (hr != null && mLastUrl != null) {
            if (previous.isEmpty() || !previous.get(previous.size() - 1).equals(mLastUrl)) {
                previous.add(mLastUrl);
            }
            Log.i("DebugDebug", "getExtra = " + hr.getExtra() + "\t\t Type = " + hr.getType());
        }
        return false;
    }
});


@Override
public void onBackPressed() {
    Log.i("DebugDebug", "onBackPressed");
    int size = previous.size();
    if (size > 0){
        webview.loadUrl(previous.get(size - 1));
        previous.remove(size - 1);
    } else {
        super.onBackPressed();
    }
}

Answer 2

I had a same problem and solved it. Here is my answer.

When I click the first link(www.new.a) it automatically redirects other link(mobile.new.a). Usually the links redirect two or three, and my solution have been worked on almost every redirect links. I hope this answer help you out with annyoing redirecting links.

I finally figured out that. You need a WebViewClient with four APIs. There are shouldOverrideUrlLoading(), onPageStarted(), onPageFinished(), and doUpdateVisitedHistory() in the WebViewClient. All the APIs you need is API 1 so don't worry about.

Here is my answer. Check out that! :)

Answer 3

webview.setWebViewClient(new WebViewClient(){
        @Override
        public boolean shouldOverrideUrlLoading(WebView view, String url) {
            Log.i(tag, "url = " + url);
            // view.loadUrl(url);

            // return super.shouldOverrideUrlLoading(view, url);
            return false;
        }
    });

look!!!! the important, shouldOverrideUrlLoading must return false

in shouldOverrideUrlLoading you can't invoke view.loadUrl.

Answer 4

shouldOverrideUrlLoading() is called on a per-URL basis. So, if http://site1.com/ redirects to http://site2.com/, which then redirects to http://site3.com/, you are calling WebView.loadUrl() for each of these URL's. Thus each appears in the back stack.

Instead of creating a WebViewClient you probably want a WebChromeClient. WebChromeClient defines a method onCreateWindow that is only invoked when the WebView is trying to create a new window, not for every single URL it accesses.