public static void Initialize(global::Android.App.Activity a)
{
activity = a;
List <string> packages = PackageManagerHelper.GetPackageNameToUse
(
global::Android.App.Application.Context,
"http://xamarin.com"
);
PackagesSupportingCustomTabs = PackageManagerHelper.PackagesSupportingCustomTabs;
PackageForCustomTabs = PackagesSupportingCustomTabs.FirstOrDefault().Value;
CustomTabsActivityManager = new CustomTabsActivityManager(a);
CustomTabsIntentBuilder = new CustomTabsIntent.Builder(CustomTabsActivityManager.Session);
CustomTabActivityHelper = new CustomTabActivityHelper();
return;
}
/// <summary>
/// Goes through all apps that handle VIEW intents and have a warmup service. Picks
/// the one chosen by the user if there is one, otherwise makes a best effort to return a
/// valid package name.
///
/// This is <strong>not</strong> threadsafe.
/// </summary>
/// <param name="context"> <seealso cref="Context"/> to use for accessing <seealso cref="PackageManager"/>. </param>
/// <returns> The package name recommended to use for connecting to custom tabs related components. </returns>
protected static List <string> GetPackageNamesToUseImplementation
(
Context context,
string url
)
{
sPackageNamesToUse = new List <string>();
if (!string.IsNullOrEmpty(sPackageNameToUse))
{
// User has set the Package to handle Opening Urls
sPackageNamesToUse.Add(sPackageNameToUse);
// do not try to detect available packages
return(sPackageNamesToUse);
}
PackageManager pm = context.PackageManager;
// Get default VIEW intent handler.
Intent activityIntent = new Intent(Intent.ActionView, Android.Net.Uri.Parse(url));
ResolveInfo resolve_info_default_view_handler = pm.ResolveActivity(activityIntent, 0);
string defaultViewHandlerPackageName = null;
if (resolve_info_default_view_handler != null)
{
defaultViewHandlerPackageName = resolve_info_default_view_handler.ActivityInfo.PackageName;
}
System.Diagnostics.Debug.WriteLine($"defaultViewHandlerPackageName = {defaultViewHandlerPackageName}");
#if DEBUG
StringBuilder sb1 = new StringBuilder();
sb1.AppendLine($" package for url ");
sb1.AppendLine($" url = {url.ToString()}");
sb1.AppendLine($" resolve_info_default_view_handler.ResolvePackageName = {resolve_info_default_view_handler.ResolvePackageName}");
sb1.AppendLine($" resolve_info_default_view_handler.ActivityInfo.PackageName = {resolve_info_default_view_handler.ActivityInfo.PackageName}");
sb1.AppendLine($" resolve_info_default_view_handler.ActivityInfo.Name = {resolve_info_default_view_handler.ActivityInfo.Name}");
sb1.AppendLine($" resolve_info_default_view_handler.ActivityInfo.ParentActivityName = {resolve_info_default_view_handler.ActivityInfo.ParentActivityName}");
System.Diagnostics.Debug.WriteLine(sb1.ToString());
#endif
// Get all apps that can handle VIEW intents.
IList <ResolveInfo> resolvedActivityList = pm.QueryIntentActivities(activityIntent, PackageInfoFlags.MatchAll);
IList <string> packagesSupportingCustomTabs = new List <string>();
foreach (ResolveInfo info in resolvedActivityList)
{
#if DEBUG
StringBuilder sb = new StringBuilder();
sb.AppendLine($" activity resolved ");
sb.AppendLine($" info ");
sb.AppendLine($" Name = {info.ActivityInfo.Name}");
sb.AppendLine($" PackageName = {info.ActivityInfo.PackageName}");
sb.AppendLine($" ProcessName = {info.ActivityInfo.ProcessName}");
System.Diagnostics.Debug.WriteLine(sb.ToString());
#endif
Intent serviceIntent = new Intent();
// Android.Support.CustomTabs.action.CustomTabsService
serviceIntent.SetAction(PackageManagerHelper.CustomTabsActionCustomTabsService);
serviceIntent.SetPackage(info.ActivityInfo.PackageName);
if (pm.ResolveService(serviceIntent, PackageInfoFlags.MatchAll) != null)
{
#if DEBUG
StringBuilder sb2 = new StringBuilder();
sb2.AppendLine($" activity resolved ");
sb2.AppendLine($" info ");
sb2.AppendLine($" Name = {info.ActivityInfo.Name}");
sb2.AppendLine($" PackageName = {info.ActivityInfo.PackageName}");
sb2.AppendLine($" ProcessName = {info.ActivityInfo.ProcessName}");
System.Diagnostics.Debug.WriteLine(sb2.ToString());
#endif
packagesSupportingCustomTabs.Add(info.ActivityInfo.PackageName);
}
}
// Now packagesSupportingCustomTabs contains all apps that can handle both VIEW intents
// and service calls.
if (packagesSupportingCustomTabs.Count == 0)
{
System.Diagnostics.Debug.WriteLine($" Packages Supporting CustomTabs Count = 0");
sPackageNameToUse = null;
}
else if (packagesSupportingCustomTabs.Count == 1)
{
System.Diagnostics.Debug.WriteLine($" Packages Supporting CustomTabs Count = 1");
System.Diagnostics.Debug.WriteLine($" Packages Supporting CustomTabs = {packagesSupportingCustomTabs[0]}");
sPackageNameToUse = packagesSupportingCustomTabs[0];
sPackageNamesToUse.Add(sPackageNameToUse);
}
else if
(
// !TextUtils.IsEmpty(defaultViewHandlerPackageName) // Android API
string.IsNullOrEmpty(defaultViewHandlerPackageName) // .NET API
&&
!HasSpecializedHandlerIntents(context, activityIntent)
&&
packagesSupportingCustomTabs.Contains(defaultViewHandlerPackageName)
)
{
sPackageNameToUse = defaultViewHandlerPackageName;
}
else if (packagesSupportingCustomTabs.Contains(PackagesSupportingCustomTabs["STABLE_PACKAGE"]))
{
sPackageNameToUse = PackagesSupportingCustomTabs["STABLE_PACKAGE"];
}
else if (packagesSupportingCustomTabs.Contains(PackagesSupportingCustomTabs["BETA_PACKAGE"]))
{
sPackageNameToUse = PackagesSupportingCustomTabs["BETA_PACKAGE"];
}
else if (packagesSupportingCustomTabs.Contains(PackagesSupportingCustomTabs["DEV_PACKAGE"]))
{
sPackageNameToUse = PackagesSupportingCustomTabs["DEV_PACKAGE"];
}
else if (packagesSupportingCustomTabs.Contains(PackagesSupportingCustomTabs["CANARY_PACKAGE"]))
{
sPackageNameToUse = PackagesSupportingCustomTabs["CANARY_PACKAGE"];
}
else if (packagesSupportingCustomTabs.Contains(PackagesSupportingCustomTabs["LOCAL_PACKAGE"]))
{
sPackageNameToUse = PackagesSupportingCustomTabs["LOCAL_PACKAGE"];
}
for (int i = 0; i < sPackageNamesToUse.Count; i++)
{
PackagesSupportingCustomTabs.Add($"Detected {i}", sPackageNamesToUse[i]);
}
return(sPackageNamesToUse);
}
