From 791dedb43f1350db901aa6f91215deecced7757b Mon Sep 17 00:00:00 2001
From: Rahul Sabnis <rahulsabnis@google.com>
Date: Wed, 29 Jan 2020 11:53:10 -0800
Subject: [PATCH] Add api BluetoothAdapter.getMostRecentlyConnectedDevices() to
 be able to get connected devices ordered by how recently they were connected

Bug: 130984590
Test: Manual
Change-Id: Ie5d0c7a8e6bc5daad5ff14064b0c65b7c4c5e6b0
---
 .../android/bluetooth/BluetoothAdapter.java   | 27 +++++++++++++++++++
 1 file changed, 27 insertions(+)

diff --git a/core/java/android/bluetooth/BluetoothAdapter.java b/core/java/android/bluetooth/BluetoothAdapter.java
index 8415ecd38b756..b6d096c2524a3 100644
--- a/core/java/android/bluetooth/BluetoothAdapter.java
+++ b/core/java/android/bluetooth/BluetoothAdapter.java
@@ -2161,6 +2161,33 @@ public final class BluetoothAdapter {
         }
     }
 
+    /**
+     * Fetches a list of the most recently connected bluetooth devices ordered by how recently they
+     * were connected with most recently first and least recently last
+     *
+     * @return {@link List} of bonded {@link BluetoothDevice} ordered by how recently they were
+     * connected
+     *
+     * @hide
+     */
+    @RequiresPermission(Manifest.permission.BLUETOOTH_ADMIN)
+    public @NonNull List<BluetoothDevice> getMostRecentlyConnectedDevices() {
+        if (getState() != STATE_ON) {
+            return new ArrayList<>();
+        }
+        try {
+            mServiceLock.readLock().lock();
+            if (mService != null) {
+                return mService.getMostRecentlyConnectedDevices();
+            }
+        } catch (RemoteException e) {
+            Log.e(TAG, "", e);
+        } finally {
+            mServiceLock.readLock().unlock();
+        }
+        return new ArrayList<>();
+    }
+
     /**
      * Return the set of {@link BluetoothDevice} objects that are bonded
      * (paired) to the local adapter.