Trebuchet: disable search bar when there are no search activities

- On non-GMS devices, there are no Search apps which can support
the search bar implementation.
- Disable the search bar entirely if there is no search activity
- Add a new utility method in SettingsProvider

Change-Id: I3bcbceae4ceab308e4d797dad107e0a2ab72d673

1 files changed, 9 insertions, 0 deletions

diff --git a/src/com/android/launcher3/Utilities.java b/src/com/android/launcher3/Utilities.java
index fcd4b8587..a594fd9f9 100644
--- a/src/com/android/launcher3/Utilities.java
+++ b/src/com/android/launcher3/Utilities.java
@@ -17,6 +17,7 @@
 package com.android.launcher3;
 
 import android.app.Activity;
+import android.app.SearchManager;
 import android.content.ActivityNotFoundException;
 import android.content.ComponentName;
 import android.content.Context;
@@ -566,4 +567,12 @@ public final class Utilities {
         float px = dp * (metrics.densityDpi / (float) DisplayMetrics.DENSITY_DEFAULT);
         return px;
     }
+
+    public static boolean searchActivityExists(Context context) {
+        SearchManager searchManager =
+                (SearchManager) context.getSystemService(Context.SEARCH_SERVICE);
+        ComponentName activityName = searchManager.getGlobalSearchActivity();
+
+        return activityName != null;
+    }
 }