App 2.12.1: no scroll bars; energy since start

The pages' scroll bars never faded on the car: a ScrollView shows its
bar on every layout, and the live values lay the page out every two
seconds. StableScrollView, the root of every page, now has none.

A new "Energy since start" tile, left of "Usage since start", shows the
net kWh taken from the pack since the trip began, recuperation counted
back.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01QLJfZQZeAKAwSqViTmLzki

SPECS.md

@@ -113,6 +113,9 @@ tyre pressures, GPS (lat, lon, elevation, heading) and the is_* flags. It does *
   INGEST_TOKEN) into git and pushed it. Commit amended and force-pushed; both values regenerated in
   the now gitignored `k8s/secrets.yaml` (since moved to `k8s/secrets/secrets.yaml`, outside
   `kubectl apply -f k8s/`). Filled-in secrets live only there from now on.
+- 2026-10-18 — App 2.12.1: no scroll bars (the 2-second refresh kept them from ever fading);
+  "Energy since start" tile (net kWh of the trip, recuperation counted back) left of "Usage since
+  start".
 - 2026-10-18 — App 2.12.0, server 2.5.0: settings entered on a phone. "Enter on phone" shows a QR
   code; the phone form on the server (approval password) takes the ABRP credentials, charging
   price and usable capacity, and the car collects them once (RFC 8628-style, like pairing; values

app/build.gradle

@@ -34,8 +34,8 @@ android {
         applicationId "com.stinnesbeck.nilsmg4"
         minSdk 27
         targetSdk 36
-        versionCode 75
+        versionCode 76
-        versionName "2.12.0"
+        versionName "2.12.1"
 
         // Nothing about the server ships in the APK: its URL and ingest token are entered in
         // the app's Server tab (ServerConfig), and the database is only reachable by the server.

app/src/main/java/com/evsuite/abrp/MainActivity.java

@@ -92,7 +92,8 @@ public class MainActivity extends AppCompatActivity {
             vehCharging, vehHvac,
             vehTireFl, vehTireFr, vehTireRl, vehTireRr,
             vehRangeTrip, vehRangeTripNote, vehRangeAverage, vehRangeAverageNote,
-            vehUsageTrip, vehUsageTripNote, vehUsageAverage, vehUsageAverageNote;
+            vehUsageTrip, vehUsageTripNote, vehUsageAverage, vehUsageAverageNote,
+            vehEnergyTrip, vehEnergyTripNote;
 
     /** Usable pack capacity for the range estimates; the car does not publish it. */
     static final String USABLE_KWH_KEY = "usable_kwh";
@@ -1187,6 +1188,8 @@ public class MainActivity extends AppCompatActivity {
         vehUsageTripNote    = vehiclePane.findViewById(R.id.vehicle_usage_trip_note);
         vehUsageAverage     = vehiclePane.findViewById(R.id.vehicle_usage_average);
         vehUsageAverageNote = vehiclePane.findViewById(R.id.vehicle_usage_average_note);
+        vehEnergyTrip       = vehiclePane.findViewById(R.id.vehicle_energy_trip);
+        vehEnergyTripNote   = vehiclePane.findViewById(R.id.vehicle_energy_trip_note);
     }
 
     private double usableKwh() {
@@ -1204,6 +1207,9 @@ public class MainActivity extends AppCompatActivity {
         estimator.add(monotonicMs, s.getBatteryPowerKw(), s.getSpeedKmh());
         Double remaining = RangeEstimator.remainingKwh(s.getSocPercent(), usableKwh());
         RangeEstimator.Estimate trip = estimator.sinceStart(remaining);
+        Double energy = estimator.energySinceStart();
+        vehEnergyTrip.setText(energy == null ? "—" : getString(R.string.energy_kwh, energy));
+        vehEnergyTripNote.setText(energy == null ? R.string.energy_trip_waiting : R.string.energy_trip_note);
         showEstimate(vehRangeTrip, vehRangeTripNote, vehUsageTrip, vehUsageTripNote, trip,
                 trip == null ? "" : getString(R.string.usage_over_distance, trip.distanceKm),
                 R.string.range_trip_waiting);

app/src/main/java/com/evsuite/abrp/RangeEstimator.java

@@ -110,6 +110,11 @@ final class RangeEstimator {
         tripLast = s;
     }
 
+    /** Net energy taken from the pack since start, in kWh; null before the trip's first sample. */
+    synchronized Double energySinceStart() {
+        return tripLast == null ? null : tripEnergyKwh;
+    }
+
     /** Range at the consumption since start; null until the trip has some distance behind it. */
     synchronized Estimate sinceStart(Double remainingKwh) {
         if (remainingKwh == null || tripDistanceKm < MIN_DISTANCE_KM) return null;

app/src/main/java/com/evsuite/abrp/StableScrollView.java

@@ -16,18 +16,28 @@ import android.widget.ScrollView;
  * Here only scrolling that is not part of a layout counts as the driver's position, and every
  * layout restores it. ScrollView.scrollTo clamps against the real content height, so a
  * position that no longer exists still ends at the bottom rather than past it.
+ *
+ * No scroll bar: a ScrollView shows its bar on every layout, and the live values lay the page
+ * out every two seconds, so on the car it never faded. The pages scroll by touch.
  */
 public class StableScrollView extends ScrollView {
 
     private int wantedScrollY;
     private boolean inLayout;
 
-    public StableScrollView(Context context) { super(context); }
+    public StableScrollView(Context context) {
+        super(context);
+        setVerticalScrollBarEnabled(false);
+    }
 
-    public StableScrollView(Context context, AttributeSet attrs) { super(context, attrs); }
+    public StableScrollView(Context context, AttributeSet attrs) {
+        super(context, attrs);
+        setVerticalScrollBarEnabled(false);
+    }
 
     public StableScrollView(Context context, AttributeSet attrs, int defStyleAttr) {
         super(context, attrs, defStyleAttr);
+        setVerticalScrollBarEnabled(false);
     }
 
     @Override

app/src/main/res/layout-w1000dp/pane_vehicle.xml

@@ -32,7 +32,11 @@
         </LinearLayout>
         <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_marginTop="16dp" android:orientation="horizontal" android:baselineAligned="false">
             <Space android:layout_width="0dp" android:layout_height="1dp" android:layout_weight="1" android:layout_marginEnd="10dp" />
-            <Space android:layout_width="0dp" android:layout_height="1dp" android:layout_weight="1" android:layout_marginEnd="10dp" />
+            <LinearLayout android:layout_width="0dp" android:layout_height="wrap_content" android:layout_weight="1" android:layout_marginEnd="10dp" android:orientation="vertical" android:minHeight="112dp" android:padding="16dp" android:background="@drawable/bg_glass">
+                <TextView android:layout_width="match_parent" android:layout_height="wrap_content" android:text="@string/vehicle_row_energy_trip" android:textAppearance="@style/Text.EV.Secondary" />
+                <TextView android:id="@+id/vehicle_energy_trip" android:layout_width="match_parent" android:layout_height="wrap_content" android:text="—" android:layout_marginTop="6dp" android:textAppearance="@style/Text.EV.Metric.Compact" android:maxLines="1" android:autoSizeTextType="uniform" android:autoSizeMinTextSize="18sp" android:autoSizeMaxTextSize="28sp" android:autoSizeStepGranularity="1sp" />
+                <TextView android:id="@+id/vehicle_energy_trip_note" android:layout_width="match_parent" android:layout_height="wrap_content" android:text="" android:textAppearance="@style/Text.EV.Secondary" android:textColor="@color/ev_cyan" android:textSize="16sp" android:maxLines="1" android:ellipsize="end" />
+            </LinearLayout>
             <LinearLayout android:layout_width="0dp" android:layout_height="wrap_content" android:layout_weight="1" android:layout_marginEnd="10dp" android:orientation="vertical" android:minHeight="112dp" android:padding="16dp" android:background="@drawable/bg_glass">
                 <TextView android:layout_width="match_parent" android:layout_height="wrap_content" android:text="@string/vehicle_row_usage_trip" android:textAppearance="@style/Text.EV.Secondary" />
                 <TextView android:id="@+id/vehicle_usage_trip" android:layout_width="match_parent" android:layout_height="wrap_content" android:text="—" android:layout_marginTop="6dp" android:textAppearance="@style/Text.EV.Metric.Compact" android:maxLines="1" android:autoSizeTextType="uniform" android:autoSizeMinTextSize="18sp" android:autoSizeMaxTextSize="28sp" android:autoSizeStepGranularity="1sp" />

app/src/main/res/layout/pane_vehicle.xml

@@ -21,6 +21,11 @@
                 <TextView android:id="@+id/vehicle_range_average" android:layout_width="match_parent" android:layout_height="wrap_content" android:text="—" android:layout_marginTop="6dp" android:textAppearance="@style/Text.EV.Metric.Compact" android:maxLines="1" android:autoSizeTextType="uniform" android:autoSizeMinTextSize="18sp" android:autoSizeMaxTextSize="28sp" android:autoSizeStepGranularity="1sp" />
                 <TextView android:id="@+id/vehicle_range_average_note" android:layout_width="match_parent" android:layout_height="wrap_content" android:text="" android:textAppearance="@style/Text.EV.Secondary" android:textColor="@color/ev_cyan" android:textSize="16sp" android:maxLines="1" android:ellipsize="end" />
             </LinearLayout>
+            <LinearLayout android:layout_width="0dp" android:layout_height="wrap_content" android:layout_columnWeight="1" android:layout_margin="4dp" android:orientation="vertical" android:minHeight="112dp" android:padding="16dp" android:background="@drawable/bg_glass">
+                <TextView android:layout_width="match_parent" android:layout_height="wrap_content" android:text="@string/vehicle_row_energy_trip" android:textAppearance="@style/Text.EV.Secondary" />
+                <TextView android:id="@+id/vehicle_energy_trip" android:layout_width="match_parent" android:layout_height="wrap_content" android:text="—" android:layout_marginTop="6dp" android:textAppearance="@style/Text.EV.Metric.Compact" android:maxLines="1" android:autoSizeTextType="uniform" android:autoSizeMinTextSize="18sp" android:autoSizeMaxTextSize="28sp" android:autoSizeStepGranularity="1sp" />
+                <TextView android:id="@+id/vehicle_energy_trip_note" android:layout_width="match_parent" android:layout_height="wrap_content" android:text="" android:textAppearance="@style/Text.EV.Secondary" android:textColor="@color/ev_cyan" android:textSize="16sp" android:maxLines="1" android:ellipsize="end" />
+            </LinearLayout>
             <LinearLayout android:layout_width="0dp" android:layout_height="wrap_content" android:layout_columnWeight="1" android:layout_margin="4dp" android:orientation="vertical" android:minHeight="112dp" android:padding="16dp" android:background="@drawable/bg_glass">
                 <TextView android:layout_width="match_parent" android:layout_height="wrap_content" android:text="@string/vehicle_row_usage_trip" android:textAppearance="@style/Text.EV.Secondary" />
                 <TextView android:id="@+id/vehicle_usage_trip" android:layout_width="match_parent" android:layout_height="wrap_content" android:text="—" android:layout_marginTop="6dp" android:textAppearance="@style/Text.EV.Metric.Compact" android:maxLines="1" android:autoSizeTextType="uniform" android:autoSizeMinTextSize="18sp" android:autoSizeMaxTextSize="28sp" android:autoSizeStepGranularity="1sp" />

app/src/main/res/values/strings.xml

@@ -34,6 +34,10 @@
     <string name="vehicle_row_range_trip">Range since start</string>
     <string name="vehicle_row_range_average">Range at 5-min average</string>
     <string name="vehicle_row_usage_trip">Usage since start</string>
+    <string name="vehicle_row_energy_trip">Energy since start</string>
+    <string name="energy_kwh">%1$.1f kWh</string>
+    <string name="energy_trip_note">net, after recuperation</string>
+    <string name="energy_trip_waiting">once the car is on</string>
     <string name="vehicle_row_usage_average">Usage, 5-min average</string>
     <string name="range_consumption">%1$.1f kWh/100 km</string>
     <string name="range_over">&gt; %1$d km</string>

app/src/test/java/com/evsuite/abrp/RangeEstimatorTest.java

@@ -115,4 +115,17 @@ public class RangeEstimatorTest {
         assertEquals(-6.25, regen.kwhPer100Km, 0.01);
         assertTrue(Double.isInfinite(regen.rangeKm));
     }
+
+    @Test
+    public void energySinceStartIsTheNetEnergyOfTheTrip() {
+        RangeEstimator r = new RangeEstimator();
+        assertNull(r.energySinceStart());
+        r.add(0, 3f, 0f);
+        assertEquals(0.0, r.energySinceStart(), 1e-9);                 // the trip has begun
+        for (long t = 15_000; t <= 600_000; t += 15_000) r.add(t, 30f, 100f);
+        // 10 minutes at 30 kW = 5 kWh, plus the first 15 s ramp from 3 kW.
+        assertEquals(5.0, r.energySinceStart(), 0.1);
+        for (long t = 615_000; t <= 735_000; t += 15_000) r.add(t, -20f, 60f); // downhill
+        assertTrue(r.energySinceStart() < 5.0);                         // recuperation counts back
+    }
 }