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POWebView.capturePicture failing with url parameters
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  1. POWebView.capturePicture failing with url parameters
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    copied!<p>[Android Newbie alert]</p> <p>I need to capture the contents of a WebView in a BitMap and I've run into a strange problem. My approach is to register a WebViewClient with the WebView, and in <em>onPageFinished</em> I call <em>capturePicture</em>. With a simple URL (e.g. <a href="http://www.yahoo.com" rel="nofollow noreferrer">http://www.yahoo.com</a>), it works fine. In other cases, capturePicture returns a Picture with height and width values = 0. The page loads fine, either way. The actual url I have to use has quite a few url parameters and I initially thought having any parameters was the problem, but that's not the case. Here's a few sample urls with comments indicating whether it works or not:</p> <ol> <li>w.loadUrl("<a href="http://www.yahoo.com" rel="nofollow noreferrer">http://www.yahoo.com</a>"); //yes</li> <li>w.loadUrl("<a href="http://search.yahoo.com/search?p=android" rel="nofollow noreferrer">http://search.yahoo.com/search?p=android</a>"); // usually not???</li> <li>w.loadUrl("<a href="http://www.yahoo.com?foo=bar" rel="nofollow noreferrer">http://www.yahoo.com?foo=bar</a>"); // nope</li> <li>w.loadUrl("<a href="http://www.google.com" rel="nofollow noreferrer">http://www.google.com</a>"); // yep</li> <li>w.loadUrl("<a href="http://www.google.com?q=android" rel="nofollow noreferrer">http://www.google.com?q=android</a>"); // yep</li> <li>w.loadUrl("<a href="http://www.google.com?foo=bar" rel="nofollow noreferrer">http://www.google.com?foo=bar</a>"); // yes</li> </ol> <p>The second case is particularly frustrating as it appears to not work. However, if I run the test app with #5 first, then switching the url to #2 and running it then works.</p> <p>Here's a snippet of an actual simplified test I created:</p> <blockquote> <pre><code>public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); </code></pre> </blockquote> <pre><code> w = new WebView(this); w.setWebViewClient(new WebViewClient() { public void onPageFinished(WebView webview, String url) { Picture picture = webview.capturePicture(); Log.d("Height", "" + picture.getHeight()); Log.d("Width", "" + picture.getWidth()); Bitmap b = Bitmap.createBitmap(picture.getWidth(), picture .getHeight(), Bitmap.Config.ARGB_8888); Canvas c = new Canvas(b); picture.draw(c); } }); w.getSettings().setJavaScriptEnabled(true); setContentView(w); //w.loadUrl("http://www.yahoo.com"); //yes w.loadUrl("http://search.yahoo.com/search?p=android"); // usually not??? //w.loadUrl("http://www.yahoo.com?foo=bar"); // nope //w.loadUrl("http://www.google.com"); // yep //w.loadUrl("http://www.google.com?q=android"); // yep //w.loadUrl("http://www.google.com?foo=bar"); // yes } </code></pre> <p>Has anyone run into this issue? Hopefully I'm just being an idiot and there's a simple solution or workaround?</p>
 

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