DO NOT MERGE: UsbManager: Don't display activity picker if there are no apps available for an accessory

Change-Id: I1aa578887e42aef375211eadece4c1fddaf234f8
Signed-off-by: Mike Lockwood <lockwood@android.com>

Author: mikeandroid

services/java/com/android/server/usb/UsbDeviceSettingsManager.java

@@ -394,8 +394,11 @@ public void accessoryAttached(UsbAccessory accessory) {
             defaultPackage = mAccessoryPreferenceMap.get(new AccessoryFilter(accessory));
         }
 
+        int count = matches.size();
+        // don't show the resolver activity if there are no choices available
+        if (count == 0) return;
+
         if (defaultPackage != null) {
-            int count = matches.size();
             for (int i = 0; i < count; i++) {
                 ResolveInfo rInfo = matches.get(i);
                 if (rInfo.activityInfo != null &&