Develop Reference

Android Webview doesn't load

I have a problem with Android Web view.
The slider work fine with Apple but doesn't load on Android WebView.
Can anyone help? www.pgc-usa.net/ivynails
Thanks

I think I know. Web views in Android by default do not have JavaScript enabled. This is because there is someway it can do harm to the app. To enable it though it takes two lines
WebSettings webSettings = yourWebview.getSettings();
yourWebview.setJavaScriptEnabled(true);
You can also set it so that links that are clicked open in the web view. ( Otherwise they open in browser.) to add this you just add
yourWebview.setWebViewClient(new WebViewClient());
All that together will make it come to this:
WebView yourWebview = (WebView) findViewById(R.id.myWebview);
yourWebview.loadUrl("http://www.pgc-usa.net/ivynails");
WebSettings webSettings = yourWebviewgetSettings();
webSettings.setJavaScriptEnabled(true);
yourWebview.setWebViewClient(new WebViewClient());
You can find out more by visiting this page on the Android developer site by clicking this link.

Android Webview - Webpage must fit the screen

I have tried the following to fit the web page based on the device screen size. But after code the text fields and drop down buttons are not working. Can anyone help me?
WebView myWebView;
#SuppressWarnings("deprecation")
#SuppressLint("SetJavaScriptEnabled")
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
myWebView = (WebView) findViewById(R.id.webview);
WebSettings webSettings = myWebView.getSettings();
webSettings.setJavaScriptEnabled(true);
myWebView.getSettings().setLayoutAlgorithm(LayoutAlgorithm.SINGLE_COLUMN);
myWebView.getSettings().setPluginState(PluginState.ON);
myWebView.loadUrl("http://m.immigrer.com/potentiel");
myWebView.setWebViewClient(new myWebViewClient());
}

The page you linked to is designed to fit the screen by default. You should try setting setUseWideViewPort(true) as that makes the WebView pay attention to the site's viewport meta tag. Also, the LayoutAlgorithm setting might be messing things up: try using LayoutAlgorithm.NORMAL.

Use downloadListener or use onPageStarted() and check if your webview ends with '.pdf'.(Assuming your URL, which contains a PDF is ending with '.pdf'. Else check any qualifier you are using in all your URLs where you expect a PDF to download, and then pass on that URL to AsyncTask to download.

Tested the link with the following settings:
WebSettings s = getSettings();
s.setBuiltInZoomControls(true);
s.setLayoutAlgorithm(WebSettings.LayoutAlgorithm.NARROW_COLUMNS);
s.setUseWideViewPort(true);
s.setLoadWithOverviewMode(true);
s.setSavePassword(true);
s.setSaveFormData(true);
s.setJavaScriptEnabled(true);
s.setRenderPriority(RenderPriority.HIGH);
s.setPluginState(android.webkit.WebSettings.PluginState.ON_DEMAND);
// enable navigator.geolocation
s.setGeolocationEnabled(true);
s.setGeolocationDatabasePath("");
// enable Web Storage: localStorage, sessionStorage
s.setDomStorageEnabled(true);
I was able to use text fields and drop down buttons. Some settings are irrelevant but hey it works

Using local storage on Android webview

I am experimenting with Android code: I would like to store one value using HTML 5 local storage. For this exercise I' using a page as simple as this one:
http://www.w3schools.com/html5/tryit.asp?filename=tryhtml5_webstorage_local_clickcount
My manifest does allow me to hit the internet, and it is min-sdk of 7.
Here is my java code:
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
webview = (WebView) findViewById(R.id.webview);
WebView webView = (WebView) findViewById(R.id.webview);
webView.addJavascriptInterface(new JavaScriptInterface(this), "Android");
WebSettings webSettings = webview.getSettings();
webSettings.setJavaScriptEnabled(true);
webSettings.setDatabasePath("");
webSettings.setDomStorageEnabled(true);
webview.setWebChromeClient(new WebChromeClient());
webview.loadUrl("http://www.xyz.com/test.html");
///xyz.com/test.html is a sample :)
webview.setWebViewClient(new HelloWebViewClient());
}
My problem is that when I close the app, the locally stored value is no longer there. I can browse to the same page using the default browser, and the value is persistent even after closing the emulator, which is exactly the behavior that I am looking for.
This is probably a something extremely simple....any ideas?

It appears the empty string DatabasePath is the problem. I tried similar code and with an empty string path, the value does not persist after the app exits. If I define a specific database path, the value persists as expected.
Try:
webSettings.setDatabasePath("/data/data/"+this.getPackageName()+"/databases/");

If your app use multiple webview you will still have troubles : localStorage is not correctly shared accross all webviews.
If you want to share the same data in multiple webviews the only way is to repair it with a java database and a javascript interface.
This page on github shows how to do this.
hope this help!

Couldn't get it working on all devices (especially with ICS) - even with database path, enabling DOMStorage etc. - using cookies instead helped me out.

Video not appearing on a WebView

I has a app that loads a url on a WebView.
web = (WebView) findViewById(R.id.webview);
WebSettings settings = web.getSettings();
settings.setJavaScriptEnabled(true);
settings.setJavaScriptCanOpenWindowsAutomatically(false);
settings.setSupportMultipleWindows(false);
settings.setSupportZoom(false);
settings.setPluginsEnabled(true);
web.setVerticalScrollBarEnabled(false);
web.setHorizontalScrollBarEnabled(false);
web.loadUrl(lastUrl);
But a spot that should has Video first shows a "loading" view than disappears, if a tap on it occurs, the sound of the video starts playing but not show.
PS: I came across answers that told to add the hardwareAccelerated flag on Manifest, but this solutions simply does not work here.

I used settings.setDomStorageEnabled(true) as well with hardwareAccelerated="true" and it's working.

Did you see this question and the comment from slytron?
By the way setPluginsEnabled is deprecated in favor of setPluginState as of API level 8.

WebView Problem on Youtube site in Android?

i tried to load the url ww.youtube.com on my app in a webview. but it cant be load completely. it loads just like below image. in the browser it loads comfortably. why? Any Idea?
image http://www.freeimagehosting.net/uploads/d7356dd8e1.png

the simple answer is to call the youtube app thats loaded on every phone with your webview. check out the code on http://fluxkore.com/index.php/android-apps/ to call the youtube app.....

Enable JavaScript! =)
myWebView = (WebView) findViewById(R.id.webview);
WebSettings webSettings = myWebView.getSettings();
webSettings.setJavaScriptEnabled(true);
myWebView.loadUrl("http://www.youtube.com");

It might be a problem with WebViews - WebViews aren't fully fledged browsers, and have limited functionality. For example, the reference page specifically says that WebViews don't handle JavaScripts. If JavaScripts, Flash or something like that is required to properly load YouTube, then that could be why the WebView doesn't handle it properly.