Android デバイスにカスタムタブをサポートするブラウザが搭載されているかどうかを確認する

String packageName = CustomTabsClient.getPackageName(
        context,
        Collections.emptyList()
);
if (packageName == null) {
    // Custom Tabs are not supported by the default browser
}

// Get all apps that can handle VIEW intents and Custom Tab service connections.
Intent activityIntent = new Intent(Intent.ACTION_VIEW, Uri.parse("http://www.example.com"));
PackageManager packageManager = context.getPackageManager();
List<ResolveInfo> resolveInfos = packageManager.queryIntentActivities(activityIntent, PackageManager.MATCH_ALL);

// Extract package names from ResolveInfo objects
List<String> packageNames = new ArrayList<>();
for (ResolveInfo info : resolveInfos) {
    packageNames.add(info.activityInfo.packageName);
}

// Get a package that supports Custom Tabs
String packageName = CustomTabsClient.getPackageName(
        context,
        packageNames,
        true /* ignore default */
);
if (packageName == null) {
    // Custom Tabs are not supported by any browser on the device
}

<queries>
    <intent>
        <action android:name=
            "android.support.customtabs.action.CustomTabsService" />
    </intent>
</queries>