Settings: localize no heart rate sensor selected.

src/main/java/de/dennisguse/opentracks/services/sensors/BluetoothRemoteSensorManager.java

@@ -86,11 +86,11 @@ public class BluetoothRemoteSensorManager {
         @Override
         public void onSharedPreferenceChanged(SharedPreferences preferences, String key) {
             if (bluetoothConnectionManager != null && PreferencesUtils.isKey(context, R.string.settings_sensor_bluetooth_heart_rate_key, key)) {
-                String address = PreferencesUtils.getBluetoothHeartRateSensorAddress(context);
+                if (PreferencesUtils.isBluetoothHeartRateSensorAddressDefault(context)) {
-                if (address.equals(PreferencesUtils.BLUETOOTH_SENSOR_DEFAULT)) {
                     stop();
                     return;
                 }
+                String address = PreferencesUtils.getBluetoothHeartRateSensorAddress(context);
                 if (bluetoothConnectionManager.isSameBluetoothDevice(address)) {
                     return;
                 }
@@ -145,12 +145,11 @@ public class BluetoothRemoteSensorManager {
             return;
         }
 
-//        String address = PreferencesUtils.getString(context, R.string.settings_sensor_bluetooth_heart_rate_key, PreferencesUtils.BLUETOOTH_SENSOR_DEFAULT);
+        if (PreferencesUtils.isBluetoothHeartRateSensorAddressDefault(context)) {
-        String address = PreferencesUtils.getBluetoothHeartRateSensorAddress(context);
-        if (PreferencesUtils.BLUETOOTH_SENSOR_DEFAULT.equals(address)) {
             Log.w(TAG, "No bluetooth address.");
             return;
         }
+        String address = PreferencesUtils.getBluetoothHeartRateSensorAddress(context);
         Log.i(TAG, "Connecting to bluetooth address: " + address);
 
         BluetoothDevice device;

src/main/java/de/dennisguse/opentracks/settings/BluetoothLePreference.java

@@ -24,6 +24,7 @@ import java.util.List;
 
 import de.dennisguse.opentracks.R;
 import de.dennisguse.opentracks.util.BluetoothUtils;
+import de.dennisguse.opentracks.util.PreferencesUtils;
 
 /**
  * Preference to select a discoverable Bluetooth LE device.
@@ -33,6 +34,8 @@ public class BluetoothLePreference extends DialogPreference {
 
     private final static String TAG = BluetoothLePreference.class.getSimpleName();
 
+    private final static int DEVICE_NONE_RESOURCEID = R.string.value_none;
+
     public BluetoothLePreference(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
         super(context, attrs, defStyleAttr, defStyleRes);
     }
@@ -75,6 +78,10 @@ public class BluetoothLePreference extends DialogPreference {
 
     @Override
     public CharSequence getSummary() {
+        if (getValue() == null || PreferencesUtils.isBluetoothHeartRateSensorAddressDefault(getContext(), getValue())) {
+            return getContext().getString(DEVICE_NONE_RESOURCEID);
+        }
+
         return getValue();
     }
 
@@ -142,7 +149,7 @@ public class BluetoothLePreference extends DialogPreference {
             }
 
             String deviceNone = getContext().getString(R.string.sensor_type_value_none);
-            listAdapter.add(getContext().getString(R.string.value_none), deviceNone);
+            listAdapter.add(getContext().getString(DEVICE_NONE_RESOURCEID), deviceNone);
             selectedEntryIndex = 0;
 
             BluetoothLePreference preference = (BluetoothLePreference) getPreference();

src/main/java/de/dennisguse/opentracks/util/PreferencesUtils.java

@@ -32,8 +32,6 @@ import de.dennisguse.opentracks.R;
  */
 public class PreferencesUtils {
 
-    public static final String BLUETOOTH_SENSOR_DEFAULT = "";
-
     private PreferencesUtils() {
     }
 
@@ -251,12 +249,20 @@ public class PreferencesUtils {
         PreferencesUtils.setBoolean(context, R.string.recording_track_paused_key, RECORDING_TRACK_PAUSED);
     }
 
+    public static String getBluetoothHeartRateSensorAddressNone(Context context) {
+        return context.getString(R.string.sensor_type_value_none);
+    }
+
     public static boolean isBluetoothHeartRateSensorAddressDefault(Context context) {
-        return PreferencesUtils.BLUETOOTH_SENSOR_DEFAULT.equals(getBluetoothHeartRateSensorAddress(context));
+        return getBluetoothHeartRateSensorAddressNone(context).equals(getBluetoothHeartRateSensorAddress(context));
+    }
+
+    public static boolean isBluetoothHeartRateSensorAddressDefault(Context context, String currentValue) {
+        return getBluetoothHeartRateSensorAddressNone(context).equals(currentValue);
     }
 
     public static String getBluetoothHeartRateSensorAddress(Context context) {
-        return PreferencesUtils.getString(context, R.string.settings_sensor_bluetooth_heart_rate_key, PreferencesUtils.BLUETOOTH_SENSOR_DEFAULT);
+        return PreferencesUtils.getString(context, R.string.settings_sensor_bluetooth_heart_rate_key, getBluetoothHeartRateSensorAddressNone(context));
     }
 
     public static boolean shouldChartShowCadence(Context context) {