Some changes...

app/src/main/java/info/nightscout/androidaps/plugins/PumpCommon/dialog/RileyLinkBLEScanActivity.java

@@ -128,7 +128,7 @@ public class RileyLinkBLEScanActivity extends AppCompatActivity {
             }
         });
 
-        startScanBLE();
+        prepareForScanning();
     }
 
 
@@ -150,16 +150,19 @@ public class RileyLinkBLEScanActivity extends AppCompatActivity {
     @Override
     public boolean onOptionsItemSelected(MenuItem item) {
         switch (item.getItemId()) {
-            case R.id.rileylink_miScan:
+            case R.id.rileylink_miScan: {
+                // FIXME
                 scanLeDevice(true);
                 return true;
+            }
+
             default:
                 return super.onOptionsItemSelected(item);
         }
     }
 
 
-    public void startScanBLE() {
+    public void prepareForScanning() {
         // https://developer.android.com/training/permissions/requesting.html
         // http://developer.radiusnetworks.com/2015/09/29/is-your-beacon-app-ready-for-android-6.html
         if (!getPackageManager().hasSystemFeature(PackageManager.FEATURE_BLUETOOTH_LE)) {
@@ -194,10 +197,11 @@ public class RileyLinkBLEScanActivity extends AppCompatActivity {
                 filters = Arrays.asList(new ScanFilter.Builder().setServiceUuid(
                     ParcelUuid.fromString(GattAttributes.SERVICE_RADIO)).build());
 
-                scanLeDevice(true);
+                // scanLeDevice(true);
             }
         }
 
+        // disable currently selected RL, so that we can discover it
         RileyLinkUtil.sendBroadcastMessage(RileyLinkConst.Intents.RileyLinkDisconnect);
     }
 
@@ -224,13 +228,9 @@ public class RileyLinkBLEScanActivity extends AppCompatActivity {
 
             Log.d(TAG, scanRecord.toString());
 
-            runOnUiThread(new Runnable() {
-
-                @Override
-                public void run() {
+            runOnUiThread(() -> {
                 if (addDevice(scanRecord))
                     mLeDeviceListAdapter.notifyDataSetChanged();
-                }
             });
         }
 
@@ -238,10 +238,7 @@ public class RileyLinkBLEScanActivity extends AppCompatActivity {
         @Override
         public void onBatchScanResults(final List<ScanResult> results) {
 
-            runOnUiThread(new Runnable() {
-
-                @Override
-                public void run() {
+            runOnUiThread(() -> {
 
                 boolean added = false;
 
@@ -253,7 +250,6 @@ public class RileyLinkBLEScanActivity extends AppCompatActivity {
 
                 if (added)
                     mLeDeviceListAdapter.notifyDataSetChanged();
-                }
             });
         }
 
@@ -293,7 +289,6 @@ public class RileyLinkBLEScanActivity extends AppCompatActivity {
 
 
         private String getDeviceDebug(BluetoothDevice device) {
-
             return "BluetoothDevice [name=" + device.getName() + ", address=" + device.getAddress() + //
                 ", type=" + device.getType(); // + ", alias=" + device.getAlias();
         }

app/src/main/java/info/nightscout/androidaps/plugins/PumpMedtronic/MedtronicFragment.java

@@ -252,15 +252,19 @@ public class MedtronicFragment extends SubscriberFragment {
 
         pumpStatus.rileyLinkError = (RileyLinkError)checkStatusSet(pumpStatus.rileyLinkError, RileyLinkUtil.getError());
 
+        if (errorsView != null) {
             if (pumpStatus.rileyLinkError != null) {
                 int resourceId = pumpStatus.rileyLinkError.getResourceId(getTargetDevice());
                 errorsView.setText(getTranslation(resourceId));
             } else
                 errorsView.setText("-");
+        }
 
         pumpStatus.pumpDeviceState = (PumpDeviceState)checkStatusSet(pumpStatus.pumpDeviceState,
             MedtronicUtil.getPumpDeviceState());
 
+        if (pumpStatusIconView != null) {
+
             if (pumpStatus.pumpDeviceState != null) {
                 // TODO Pump State
 
@@ -292,8 +296,8 @@ public class MedtronicFragment extends SubscriberFragment {
                             if (cmd == MedtronicCommandType.GetHistoryData) {
 
                                 if (MedtronicUtil.frameNumber == null) {
-                                pumpStatusIconView.setText(MainApp.gs(R.string.medtronic_cmd_desc_get_history_request,
-                                    MedtronicUtil.pageNumber));
+                                    pumpStatusIconView.setText(MainApp.gs(
+                                        R.string.medtronic_cmd_desc_get_history_request, MedtronicUtil.pageNumber));
                                 } else {
                                     pumpStatusIconView.setText(MainApp.gs(resourceId, MedtronicUtil.pageNumber,
                                         MedtronicUtil.frameNumber));
@@ -327,6 +331,7 @@ public class MedtronicFragment extends SubscriberFragment {
             } else {
                 pumpStatusIconView.setText("{fa-bed}   ");
             }
+        }
 
         if (queueView != null) {
             Spanned status = ConfigBuilderPlugin.getPlugin().getCommandQueue().spannedStatus();

app/src/main/res/menu/menu_rileylink_ble_scan.xml

@@ -5,7 +5,6 @@
 
     <item
         android:id="@+id/rileylink_miScan"
-        android:icon="@drawable/refresh"
         app:showAsAction="ifRoom"
         android:title="Scan"></item>
 </menu>