How to control the Android WebView history/back stack?

Question

I am trying to figure out a way to handle the WebView back stack similar to how the Android web browser handles it when the back button is pressed from within my own app\'s WebV

Answer 1

Detect when url loading is triggered by the user, and add those to the backstack instead.

private List previous = new ArrayList();
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();
    }
}