Fixed a Setting Bluetooth Airplane mode bug.

+ This patch moves the switch listeners from setup/teardown of the SwitchBar
to pause/resume of Bluetooth Settings.  This prevents Bluetooth from
receiving connect messages while Airplane mode is turning off Bluetooth
(which is what caused Bluetooth to re-enable.)

Bug: 17465951
Change-Id: I4d32fcf5bb3a2241ed03e2295c86390e15743954

src/com/android/settings/bluetooth/BluetoothEnabler.java

@@ -90,12 +90,10 @@ public final class BluetoothEnabler implements SwitchBar.OnSwitchChangeListener
     }
 
     public void setupSwitchBar() {
-        mSwitchBar.addOnSwitchChangeListener(this);
         mSwitchBar.show();
     }
 
     public void teardownSwitchBar() {
-        mSwitchBar.removeOnSwitchChangeListener(this);
         mSwitchBar.hide();
     }
 
@@ -112,6 +110,7 @@ public final class BluetoothEnabler implements SwitchBar.OnSwitchChangeListener
         // Bluetooth state is not sticky, so set it manually
         handleStateChanged(mLocalAdapter.getBluetoothState());
 
+        mSwitchBar.addOnSwitchChangeListener(this);
         mContext.registerReceiver(mReceiver, mIntentFilter);
         mValidListener = true;
     }
@@ -121,6 +120,7 @@ public final class BluetoothEnabler implements SwitchBar.OnSwitchChangeListener
             return;
         }
 
+        mSwitchBar.removeOnSwitchChangeListener(this);
         mContext.unregisterReceiver(mReceiver);
         mValidListener = false;
     }