Android应用在设备上加载白屏

Question

I've debugged my app on my PC and it works fine. When I go into my phone and tablet instead of it loading the WebView like it should it simply loads a white screen, I guess failing to load the web site. I'm not sure where to begin debugging since my debug mode and virtual device works fine. Any suggestions?

Answer 1

A couple of suggestions based on these issues:

1. Make sure you have permissions on your devices in the Manifest file:
2. Make sure your devices actually have internet access
3. Possibly enable javascript (ie mWebView.getSettings().setJavaScriptEnabled(true))
4. Try loading a different URL (ie http://google.com ) to see if that loads
5. Try changing the background color to see if your content is loading, but you can't see it (ie mWebView.setBackgroundColor(Color.parseColor("#000000"));)

The fact that it's working locally but not on device suggests either connection issues or permissions in my opinion. The other option is that the html you're loading is corrupt and the browser on your device(s) are breaking on rendering them.

Android WebView shows a blank page

Answer 2

Does your WebView require JavaScript? If so you'll need to enable it.

webView.getSettings().setJavaScriptEnabled(true);