Setting: add option to adjust idle speed.

New default: 0.5km/h (replaces 0.5mp/h).

Fixes #1004.

src/main/java/de/dennisguse/opentracks/content/data/Speed.java

@@ -5,6 +5,7 @@ import androidx.annotation.NonNull;
 import java.time.Duration;
 import java.util.Objects;
 
+import de.dennisguse.opentracks.settings.PreferencesUtils;
 import de.dennisguse.opentracks.util.UnitConversions;
 
 public class Speed {
@@ -25,6 +26,10 @@ public class Speed {
         return of(Float.parseFloat(speed_mps));
     }
 
+    public static Speed ofKMH(double speed_kmh) {
+        return of(Distance.ofKilometer(speed_kmh), Duration.ofHours(1));
+    }
+
     public static Speed zero() {
         return of(0.0);
     }
@@ -42,10 +47,6 @@ public class Speed {
         return Speed.of(Math.abs(speed1.speed_mps - speed2.speed_mps));
     }
 
-
-    // Anything faster than that (in meters per second) will be considered moving.
-    private static final double MAX_NO_MOVEMENT_SPEED = 0.224;
-
     private final double speed_mps;
 
     private Speed(double speed_mps) {
@@ -65,7 +66,7 @@ public class Speed {
     }
 
     public boolean isMoving() {
-        return !isInvalid() && speed_mps >= MAX_NO_MOVEMENT_SPEED;
+        return !isInvalid() && greaterThan(PreferencesUtils.getIdleSpeed());
     }
 
     public boolean lessThan(Speed speed) {

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

@@ -74,5 +74,8 @@ public class GpsSettingsFragment extends PreferenceFragmentCompat {
 
         ListPreference recordingGpsAccuracy = findPreference(getString(R.string.recording_gps_accuracy_key));
         recordingGpsAccuracy.setEntries(PreferencesUtils.getThresholdHorizontalAccuracyEntries());
+
+        ListPreference idleSpeed = findPreference(getString(R.string.idle_speed_key));
+        idleSpeed.setEntries(PreferencesUtils.getIdleSpeedEntries());
     }
 }

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

@@ -42,6 +42,7 @@ import de.dennisguse.opentracks.R;
 import de.dennisguse.opentracks.content.data.DataField;
 import de.dennisguse.opentracks.content.data.Distance;
 import de.dennisguse.opentracks.content.data.Layout;
+import de.dennisguse.opentracks.content.data.Speed;
 import de.dennisguse.opentracks.io.file.TrackFileFormat;
 import de.dennisguse.opentracks.util.CsvConstants;
 import de.dennisguse.opentracks.util.TrackIconUtils;
@@ -448,6 +449,43 @@ public class PreferencesUtils {
     }
 
 
+    public static Speed getIdleSpeed() {
+        final float DEFAULT = Float.parseFloat(resources.getString(R.string.idle_speed_default));
+        float value = getFloat(R.string.idle_speed_key, DEFAULT);
+        return Speed.ofKMH(value);
+    }
+
+    static String[] getIdleSpeedEntries() {
+        String[] entryValues = resources.getStringArray(R.array.idle_speed_values);
+        String[] entries = new String[entryValues.length];
+
+        final float idleSpeedDefault = Float.parseFloat(resources.getString(R.string.idle_speed_default));
+
+        boolean metricUnits = isMetricUnits();
+
+        for (int i = 0; i < entryValues.length; i++) {
+            float value = Float.parseFloat(entryValues[i]);
+            if (metricUnits) {
+                if (value == idleSpeedDefault) {
+                    entries[i] = resources.getString(R.string.value_float_kilometer_hour_recommended, value);
+                } else {
+                    entries[i] = resources.getString(R.string.value_float_kilometer_hour, value);
+                }
+            } else {
+                double valueMPH = Speed.ofKMH(value).toMPH();
+
+                if (value == idleSpeedDefault) {
+                    entries[i] = resources.getString(R.string.value_float_mile_hour_recommended, valueMPH);
+                } else {
+                    entries[i] = resources.getString(R.string.value_float_mile_hour, valueMPH);
+                }
+            }
+        }
+
+        return entries;
+    }
+
+
     public static boolean shouldInstantExportAfterWorkout(Context context) {
         final boolean INSTANT_POST_WORKOUT_EXPORT_DEFAULT = resources.getBoolean(R.bool.post_workout_export_enabled_default);
         return getBoolean(R.string.post_workout_export_enabled_key, INSTANT_POST_WORKOUT_EXPORT_DEFAULT) && isDefaultExportDirectoryUri(context);