Bluetooth: move getting adapter to BluetoothUtils.

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

@@ -26,12 +26,10 @@ import android.os.Message;
 import android.util.Log;
 import android.widget.Toast;
 
-import java.util.ArrayList;
-
 import de.dennisguse.opentracks.R;
 import de.dennisguse.opentracks.content.sensor.SensorDataSet;
+import de.dennisguse.opentracks.util.BluetoothUtils;
 import de.dennisguse.opentracks.util.PreferencesUtils;
-import de.dennisguse.opentracks.util.UnitConversions;
 
 /**
  * Bluetooth LE sensor manager.
@@ -45,7 +43,7 @@ public class BluetoothRemoteSensorManager {
 
     private static final String TAG = BluetoothConnectionManager.class.getSimpleName();
 
-    private static final BluetoothAdapter bluetoothAdapter = getDefaultBluetoothAdapter();
+    private static final BluetoothAdapter bluetoothAdapter = BluetoothUtils.getDefaultBluetoothAdapter(TAG);
 
     private final Context context;
 
@@ -114,43 +112,6 @@ public class BluetoothRemoteSensorManager {
         sharedPreferences = PreferencesUtils.getSharedPreferences(context);
     }
 
-    private static BluetoothAdapter getDefaultBluetoothAdapter() {
-        // If from the main application thread, return directly
-        if (Thread.currentThread().equals(Looper.getMainLooper().getThread())) {
-            return BluetoothAdapter.getDefaultAdapter();
-        }
-
-        // Get the default adapter from the main application thread
-        final ArrayList<BluetoothAdapter> adapters = new ArrayList<>(1);
-        final Object mutex = new Object();
-
-        Handler handler = new Handler(Looper.getMainLooper());
-        handler.post(new Runnable() {
-            @Override
-            public void run() {
-                adapters.add(BluetoothAdapter.getDefaultAdapter());
-                synchronized (mutex) {
-                    mutex.notify();
-                }
-            }
-        });
-
-        while (adapters.isEmpty()) {
-            synchronized (mutex) {
-                try {
-                    mutex.wait(UnitConversions.ONE_SECOND);
-                } catch (InterruptedException e) {
-                    Log.e(TAG, "Interrupted while waiting for default bluetooth adapter", e);
-                }
-            }
-        }
-
-        if (adapters.get(0) == null) {
-            Log.w(TAG, "No bluetooth adapter found.");
-        }
-        return adapters.get(0);
-    }
-
     public void start() {
         sharedPreferences.registerOnSharedPreferenceChangeListener(sharedPreferenceChangeListener);
         startCurrentSensor();

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

@@ -19,7 +19,11 @@ import android.bluetooth.BluetoothAdapter;
 import android.bluetooth.BluetoothClass;
 import android.bluetooth.BluetoothDevice;
 import android.bluetooth.BluetoothGattCharacteristic;
+import android.os.Handler;
+import android.os.Looper;
+import android.util.Log;
 
+import java.util.ArrayList;
 import java.util.List;
 import java.util.Set;
 
@@ -33,6 +37,43 @@ public class BluetoothUtils {
     private BluetoothUtils() {
     }
 
+    public static BluetoothAdapter getDefaultBluetoothAdapter(final String TAG) {
+        // If from the main application thread, return directly
+        if (Thread.currentThread().equals(Looper.getMainLooper().getThread())) {
+            return BluetoothAdapter.getDefaultAdapter();
+        }
+
+        // Get the default adapter from the main application thread
+        final ArrayList<BluetoothAdapter> adapters = new ArrayList<>(1);
+        final Object mutex = new Object();
+
+        Handler handler = new Handler(Looper.getMainLooper());
+        handler.post(new Runnable() {
+            @Override
+            public void run() {
+                adapters.add(BluetoothAdapter.getDefaultAdapter());
+                synchronized (mutex) {
+                    mutex.notify();
+                }
+            }
+        });
+
+        while (adapters.isEmpty()) {
+            synchronized (mutex) {
+                try {
+                    mutex.wait(UnitConversions.ONE_SECOND);
+                } catch (InterruptedException e) {
+                    Log.e(TAG, "Interrupted while waiting for default bluetooth adapter", e);
+                }
+            }
+        }
+
+        if (adapters.get(0) == null) {
+            Log.w(TAG, "No bluetooth adapter found.");
+        }
+        return adapters.get(0);
+    }
+
     /**
      * Populates the device names and the device addresses with all the suitable
      * bluetooth devices.