#SushiHangover.GoogleChrome.CustomTabs.Shared

Xamarin.Android implemetation of Android.Support.CustomTabs.Shared with demos

####Current project status:

This is a Xamarin.Android C# port of Google's Java-based CustomTabs code:

Ref: GoogleChrome/custom-tabs-client

• Java-based Application -> C#-based Application
• Java-based customtabsdemos -> C#-based AndroidCustomTabs
• Java package org.chromium.customtabsclient.shared converted to C# and publiched as a Nuget in namepsace Android.Support.CustomTabs.Shared

###Using Chrome-based CustomTabs is Easy:

var url = "https://www.xamarin.com";
var customTabsIntent = new CustomTabsIntent.Builder().Build();
CustomTabActivityHelper.OpenCustomTab(this, customTabsIntent, Uri.Parse(url), new WebviewFallback());

If Chrome is not installed, you have complete control over a fallback, the above example is using a WebView-based Activity as the fallback

• Logcat output (Chrome Beta installed and being used):

[CustomTabsHelper] PackageNameToUse: com.chrome.beta

• Logcat output (Chrome is not install, using WebView:

[CustomTabsHelper] PackageNameToUse: [WebViewFactory] Loading com.android.webview version ....

When using the KeepAliveService via AddKeepAliveExtra(...), you can monitor your application's Importanceand its elevation viaLogImportance`:

mLogImportance = new LogImportance();
mLogImportance.Run();

Logcat output before launching a Chrome CustomTab:

[LogImportance] New importance = Foreground

Logcat output after launching a Chrome CustomTab:

[LogImportance] New importance = Foreground (Reason: Service in use)

##Nuget:

PM> Install-Package SushiHangover.Android.Support.CustomTabs.Shared

Ref: https://www.nuget.org/packages/SushiHangover.Android.Support.CustomTabs.Shared

##Xamarin Linker Friendly:

This library is linker friendly ([assembly:LinkerSafe]) and uses conditional preservation on members ([Preserve(Conditional = true)])

• Linking on Android

##Chrome Custom Tabs:

Java Examples and Documentation

Re: https://github.com/GoogleChrome/custom-tabs-client

Chrome Custom Tabs provides a way for an application to customize and interact with a Chrome Activity on Android. This makes the web content feel like being a part of the application, while retaining the full functionality and performance of a complete web browser.

###CustomTabs Reading Material

####Modernizing OAuth interactions in Native Apps for Better Usability and Security

On April 20, 2017, we will start blocking OAuth requests using web-views for all OAuth clients on platforms where viable alternatives exist.

####Chrome Custom Tabs

Chrome Custom Tabs also allow the developer to pre-start Chrome and pre-fetch content for faster loading.

##License

Consult LICENSE

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