Added "screen always on"-feature to TrackDetailActivity.

And the "show on lockscreen"-feature is only used while recording.

src/main/java/de/dennisguse/opentracks/TrackDetailActivity.java

@@ -127,16 +127,24 @@ public class TrackDetailActivity extends AbstractListActivity implements ChooseA
         public void onSharedPreferenceChanged(SharedPreferences preferences, String key) {
             if (PreferencesUtils.isKey(TrackDetailActivity.this, R.string.recording_track_id_key, key)) {
                 recordingTrackId = PreferencesUtils.getRecordingTrackId(TrackDetailActivity.this);
+                setLockscreenPolicy();
+                setScreenOnPolicy();
             }
 
             if (PreferencesUtils.isKey(TrackDetailActivity.this, R.string.recording_track_paused_key, key)) {
                 recordingTrackPaused = PreferencesUtils.isRecordingTrackPaused(TrackDetailActivity.this);
+                setLockscreenPolicy();
+                setScreenOnPolicy();
             }
 
             if (PreferencesUtils.isKey(TrackDetailActivity.this, R.string.stats_show_on_lockscreen_while_recording_key, key)) {
                 setLockscreenPolicy();
             }
 
+            if (PreferencesUtils.isKey(TrackDetailActivity.this, R.string.stats_keep_screen_on_while_recording_key, key)) {
+                setScreenOnPolicy();
+            }
+
             if (key == null) return;
 
             runOnUiThread(new Runnable() {
@@ -227,11 +235,13 @@ public class TrackDetailActivity extends AbstractListActivity implements ChooseA
     @Override
     public void onAttachedToWindow() {
         setLockscreenPolicy();
+        setScreenOnPolicy();
         super.onAttachedToWindow();
     }
 
     private void setLockscreenPolicy() {
-        boolean showOnLockScreen = PreferencesUtils.shouldShowStatsOnLockscreen(TrackDetailActivity.this);
+        boolean showOnLockScreen = PreferencesUtils.shouldShowStatsOnLockscreen(TrackDetailActivity.this)
+                && PreferencesUtils.isRecording(this);
 
         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O_MR1) {
             setShowWhenLocked(showOnLockScreen);
@@ -242,6 +252,17 @@ public class TrackDetailActivity extends AbstractListActivity implements ChooseA
         }
     }
 
+    private void setScreenOnPolicy() {
+        boolean keepScreenOn = PreferencesUtils.shouldKeepScreenOn(TrackDetailActivity.this)
+                && PreferencesUtils.isRecording(this);
+
+        if (keepScreenOn) {
+            getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
+        } else {
+            getWindow().clearFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
+        }
+    }
+
     @Override
     protected void onStart() {
         super.onStart();

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

@@ -289,6 +289,11 @@ public class PreferencesUtils {
         return getBoolean(context, R.string.stats_show_on_lockscreen_while_recording_key, STATS_SHOW_ON_LOCKSCREEN_DEFAULT);
     }
 
+    public static boolean shouldKeepScreenOn(Context context) {
+        final boolean DEFAULT = context.getResources().getBoolean(R.bool.stats_keep_screen_on_while_recording_default);
+        return getBoolean(context, R.string.stats_keep_screen_on_while_recording_key, DEFAULT);
+    }
+
     public static boolean isShowStatsGradeElevation(Context context) {
         final boolean STATS_SHOW_GRADE_ELEVATION = context.getResources().getBoolean(R.bool.stats_show_grade_elevation_default);
         return PreferencesUtils.getBoolean(context, R.string.stats_show_grade_elevation_key, STATS_SHOW_GRADE_ELEVATION);

src/main/res/values/settings.xml

@@ -25,6 +25,9 @@
     <string name="stats_show_on_lockscreen_while_recording_key" translatable="false">trackdetail_show_on_lockscreen_while_recording</string>
     <bool name="stats_show_on_lockscreen_while_recording_default" translatable="false">false</bool>
 
+    <string name="stats_keep_screen_on_while_recording_key" translatable="false">trackdetail_keep_screen_on_while_recording</string>
+    <bool name="stats_keep_screen_on_while_recording_default" translatable="false">false</bool>
+
     <string name="settings_reset_key" translatable="false">settingsReset</string>
 
     <string name="settings_sensor_bluetooth_heart_rate_key" translatable="false">bluetoothSensor</string>

src/main/res/values/strings.xml

@@ -1194,6 +1194,13 @@ limitations under the License.
     While recording, show statistics without unlocking the device.
   </string>
 
+  <string name="settings_recording_keep_screen_on_while_recording_title" translation_description="In the 'Settings' page, the option to change the 'show on lockscreen' behavior while recording.">
+    Keep screen on
+  </string>
+  <string name="settings_recording_keep_screen_on_while_recording_summary" translation_description="In the 'Settings' page, the option to change the 'show on lockscreen' behavior while recording.">
+    While recording, keep the screen on.
+  </string>
+
   <string name="settings_recording" translation_description="In the 'Settings' page, the option to change the recording settings.
 
       Character limit: ~26 (1 line)">

src/main/res/xml/settings.xml

@@ -74,6 +74,11 @@ limitations under the License.
             android:key="@string/stats_show_on_lockscreen_while_recording_key"
             android:summary="@string/settings_recording_show_on_lockscreen_while_recording_summary"
             android:title="@string/settings_recording_show_on_lockscreen_while_recording_title" />
+        <CheckBoxPreference
+            android:defaultValue="@bool/stats_keep_screen_on_while_recording_default"
+            android:key="@string/stats_keep_screen_on_while_recording_key"
+            android:summary="@string/settings_recording_keep_screen_on_while_recording_summary"
+            android:title="@string/settings_recording_keep_screen_on_while_recording_title" />
         <ListPreference
             android:defaultValue="@string/voice_frequency_default"
             android:entryValues="@array/frequency_values"