color, package and action bar configuration.

shared/src/main/java/org/chromium/customtabsclient/shared/CustomTabsHelper.java

Index: shared/src/main/java/org/chromium/customtabsclient/shared/CustomTabsHelper.java
diff --git a/shared/src/main/java/org/chromium/customtabsclient/shared/CustomTabsHelper.java b/shared/src/main/java/org/chromium/customtabsclient/shared/CustomTabsHelper.java
index 00af1e2189019aeabbcfcc4d498e22d09a2a073c..631e740a1d6ab42a8eec8597a466d84e2b6ac001 100644
--- a/shared/src/main/java/org/chromium/customtabsclient/shared/CustomTabsHelper.java
+++ b/shared/src/main/java/org/chromium/customtabsclient/shared/CustomTabsHelper.java
@@ -19,6 +19,7 @@ import android.content.Intent;
 import android.content.IntentFilter;
 import android.content.pm.PackageManager;
 import android.content.pm.ResolveInfo;
+import android.graphics.Color;
 import android.net.Uri;
 import android.text.TextUtils;
 import android.util.Log;
@@ -60,9 +61,14 @@ public class CustomTabsHelper {
      * @param context {@link Context} to use for accessing {@link PackageManager}.
      * @return The package name recommended to use for connecting to custom tabs related components.
      */
-    public static String getPackageNameToUse(Context context) {
+    public static String getPackageNameToUse(Context context,
+                                             List<String> packagesSupportingCustomTabs) {
         if (sPackageNameToUse != null) return sPackageNameToUse;
 
+        if (packagesSupportingCustomTabs == null) {
+            packagesSupportingCustomTabs = getAllPackagesSupportingCustomTabs(context);
+        }
+
         PackageManager pm = context.getPackageManager();
         // Get default VIEW intent handler.
         Intent activityIntent = new Intent(Intent.ACTION_VIEW, Uri.parse("http://www.example.com"));
@@ -72,18 +78,6 @@ public class CustomTabsHelper {
             defaultViewHandlerPackageName = defaultViewHandlerInfo.activityInfo.packageName;
         }
 
-        // Get all apps that can handle VIEW intents.
-        List<ResolveInfo> resolvedActivityList = pm.queryIntentActivities(activityIntent, 0);
-        List<String> packagesSupportingCustomTabs = new ArrayList<>();
-        for (ResolveInfo info : resolvedActivityList) {
-            Intent serviceIntent = new Intent();
-            serviceIntent.setAction(ACTION_CUSTOM_TABS_CONNECTION);
-            serviceIntent.setPackage(info.activityInfo.packageName);
-            if (pm.resolveService(serviceIntent, 0) != null) {
-                packagesSupportingCustomTabs.add(info.activityInfo.packageName);
-            }
-        }
-
         // Now packagesSupportingCustomTabs contains all apps that can handle both VIEW intents
         // and service calls.
         if (packagesSupportingCustomTabs.isEmpty()) {
@@ -106,6 +100,10 @@ public class CustomTabsHelper {
         return sPackageNameToUse;
     }
 
+    public static String getPackageNameToUse(Context context) {

[Ian Wen, 2016/02/09 00:14:16]

javadoc. /** @see getPackageNameToUse(Context, List) **/. Every public methods
or public attributes must have javadoc.

[BigBossZhiling, 2016/02/09 01:03:12]

Done.

+        return getPackageNameToUse(context, null);
+    }
+
     /**
      * Used to check whether there is a specialized handler for a given intent.
      * @param intent The intent to check with.
@@ -139,4 +137,65 @@ public class CustomTabsHelper {
     public static String[] getPackages() {
         return new String[]{"", STABLE_PACKAGE, BETA_PACKAGE, DEV_PACKAGE, LOCAL_PACKAGE};
     }
+
+    /**
+     * @return All possible colors.
+     */
+    public static String[] getColors() {
+        ArrayList<String> fieldList = new ArrayList<String>();
+        String colorName;
+        for (int i = 0; i < Color.class.getFields().length; i ++) {
+            colorName = Color.class.getFields()[i].getName();
+            // Make only the first character capitalized.
+            fieldList.add(i, colorName.charAt(0) + colorName.substring(1).toLowerCase());
+        }
+        return fieldList.toArray(new String[fieldList.size()]);
+    }
+
+    /**
+     * Get all apps that support custom tabs.
+     * @param context
+     * @return
+     */
+    public static ArrayList<String> getAllPackagesSupportingCustomTabs(Context context) {
+        PackageManager pm = context.getPackageManager();
+        // Get default VIEW intent handler.
+        Intent activityIntent = new Intent(Intent.ACTION_VIEW, Uri.parse("http://www.example.com"));
+        // Get all apps that can handle VIEW intents.
+        List<ResolveInfo> resolvedActivityList = pm.queryIntentActivities(activityIntent, 0);
+        ArrayList<String> packagesSupportingCustomTabs = new ArrayList<>();
+        for (ResolveInfo info : resolvedActivityList) {
+            Intent serviceIntent = new Intent();
+            serviceIntent.setAction(ACTION_CUSTOM_TABS_CONNECTION);
+            serviceIntent.setPackage(info.activityInfo.packageName);
+            if (pm.resolveService(serviceIntent, 0) != null) {
+                packagesSupportingCustomTabs.add(info.activityInfo.packageName);
+            }
+        }
+        return packagesSupportingCustomTabs;
+    }
+
+    public static int stringToColor(String color) {
+        try {
+            return (int) Color.class.getField(color.toUpperCase()).get(new Color());
+        } catch (Exception e) {
+            return 0; // Transparent.
+        }
+    }
+
+    public static String chromeStable() {
+        return STABLE_PACKAGE;
+    }
+
+    public static String chromeBeta() {
+        return BETA_PACKAGE;
+    }
+
+    public static String chromeDev() {
+        return DEV_PACKAGE;
+    }
+
+    public static String chromeLocal() {
+        return LOCAL_PACKAGE;
+    }
 }