Added option to force polling on (un)metered networks

app/src/main/java/eu/faircode/email/EntityAccount.java

@@ -229,6 +229,18 @@ public class EntityAccount extends EntityOrder implements Serializable {
     }
 
     boolean isExempted(Context context) {
+        SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
+        boolean poll_metered = prefs.getBoolean("poll_metered", false);
+        boolean poll_unmetered = prefs.getBoolean("poll_unmetered", false);
+
+        if (poll_metered || poll_unmetered) {
+            ConnectionHelper.NetworkState state = ConnectionHelper.getNetworkState(context);
+            if (poll_metered && state.isConnected() && !state.isUnmetered())
+                return false;
+            if (poll_unmetered && state.isConnected() && state.isUnmetered())
+                return false;
+        }
+
         return this.poll_exempted;
     }
 

app/src/main/java/eu/faircode/email/FragmentOptionsSynchronize.java

@@ -82,6 +82,8 @@ public class FragmentOptionsSynchronize extends FragmentBase implements SharedPr
     private Spinner spPollInterval;
     private TextView tvPollBattery;
     private RecyclerView rvExempted;
+    private SwitchCompat swPollMetered;
+    private SwitchCompat swPollUnmetered;
     private SwitchCompat swSchedule;
     private TextView tvSchedulePro;
     private TextView tvScheduleStart;
@@ -132,6 +134,7 @@ public class FragmentOptionsSynchronize extends FragmentBase implements SharedPr
 
     private final static List<String> RESET_OPTIONS = Collections.unmodifiableList(Arrays.asList(
             "enabled", "poll_interval", "auto_optimize",
+            "poll_metered", "poll_unmetered",
             "schedule", "schedule_start", "schedule_end", "schedule_start_weekend", "schedule_end_weekend", "weekend",
             "sync_quick_imap", "sync_quick_pop",
             "sync_nodate", "sync_unseen", "sync_flagged", "delete_unseen", "sync_kept",
@@ -172,6 +175,8 @@ public class FragmentOptionsSynchronize extends FragmentBase implements SharedPr
         tvPollBattery = view.findViewById(R.id.tvPollBattery);
 
         rvExempted = view.findViewById(R.id.rvExempted);
+        swPollMetered = view.findViewById(R.id.swPollMetered);
+        swPollUnmetered = view.findViewById(R.id.swPollUnmetered);
 
         swSchedule = view.findViewById(R.id.swSchedule);
         tvSchedulePro = view.findViewById(R.id.tvSchedulePro);
@@ -369,6 +374,20 @@ public class FragmentOptionsSynchronize extends FragmentBase implements SharedPr
         adapter = new AdapterAccountExempted(getViewLifecycleOwner(), getContext());
         rvExempted.setAdapter(adapter);
 
+        swPollMetered.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
+            @Override
+            public void onCheckedChanged(CompoundButton compoundButton, boolean checked) {
+                prefs.edit().putBoolean("poll_metered", checked).apply();
+            }
+        });
+
+        swPollUnmetered.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
+            @Override
+            public void onCheckedChanged(CompoundButton compoundButton, boolean checked) {
+                prefs.edit().putBoolean("poll_unmetered", checked).apply();
+            }
+        });
+
         swSchedule.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
             @Override
             public void onCheckedChanged(CompoundButton compoundButton, boolean checked) {
@@ -706,6 +725,8 @@ public class FragmentOptionsSynchronize extends FragmentBase implements SharedPr
                 }
 
             tvPollBattery.setVisibility(pollInterval > 0 && pollInterval < 15 ? View.VISIBLE : View.GONE);
+            swPollMetered.setChecked(prefs.getBoolean("poll_metered", false));
+            swPollUnmetered.setChecked(prefs.getBoolean("poll_unmetered", false));
             grpExempted.setVisibility(pollInterval == 0 ? View.GONE : View.VISIBLE);
 
             swSchedule.setChecked(prefs.getBoolean("schedule", false) && pro);

app/src/main/java/eu/faircode/email/ServiceSynchronize.java

@@ -160,7 +160,7 @@ public class ServiceSynchronize extends ServiceBase implements SharedPreferences
     private static final String ACTION_NEW_MESSAGE_COUNT = BuildConfig.APPLICATION_ID + ".NEW_MESSAGE_COUNT";
 
     private static final List<String> PREF_EVAL = Collections.unmodifiableList(Arrays.asList(
-            "enabled", "poll_interval", "last_daily" // restart account(s)
+            "enabled", "poll_interval", "poll_metered", "poll_unmetered", "last_daily" // restart account(s)
     ));
 
     private static final List<String> PREF_RELOAD = Collections.unmodifiableList(Arrays.asList(

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

@@ -250,6 +250,30 @@
                     app:layout_constraintStart_toStartOf="parent"
                     app:layout_constraintTop_toBottomOf="@id/tvExempted" />
 
+                <androidx.appcompat.widget.SwitchCompat
+                    android:id="@+id/swPollMetered"
+                    android:layout_width="0dp"
+                    android:layout_height="wrap_content"
+                    android:layout_marginStart="12dp"
+                    android:layout_marginTop="12dp"
+                    android:text="@string/title_advanced_poll_metered"
+                    app:layout_constraintEnd_toEndOf="parent"
+                    app:layout_constraintStart_toStartOf="parent"
+                    app:layout_constraintTop_toBottomOf="@id/rvExempted"
+                    app:switchPadding="12dp" />
+
+                <androidx.appcompat.widget.SwitchCompat
+                    android:id="@+id/swPollUnmetered"
+                    android:layout_width="0dp"
+                    android:layout_height="wrap_content"
+                    android:layout_marginStart="12dp"
+                    android:layout_marginTop="12dp"
+                    android:text="@string/title_advanced_poll_unmetered"
+                    app:layout_constraintEnd_toEndOf="parent"
+                    app:layout_constraintStart_toStartOf="parent"
+                    app:layout_constraintTop_toBottomOf="@id/swPollMetered"
+                    app:switchPadding="12dp" />
+
                 <androidx.appcompat.widget.SwitchCompat
                     android:id="@+id/swSchedule"
                     android:layout_width="0dp"
@@ -258,7 +282,7 @@
                     android:text="@string/title_advanced_schedule"
                     app:layout_constraintEnd_toEndOf="parent"
                     app:layout_constraintStart_toStartOf="parent"
-                    app:layout_constraintTop_toBottomOf="@id/rvExempted"
+                    app:layout_constraintTop_toBottomOf="@id/swPollUnmetered"
                     app:switchPadding="12dp" />
 
                 <TextView
@@ -477,7 +501,7 @@
                     android:id="@+id/grpExempted"
                     android:layout_width="0dp"
                     android:layout_height="0dp"
-                    app:constraint_referenced_ids="tvExempted,rvExempted" />
+                    app:constraint_referenced_ids="tvExempted,rvExempted,swPollMetered,swPollUnmetered" />
             </androidx.constraintlayout.widget.ConstraintLayout>
         </androidx.cardview.widget.CardView>
 

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

@@ -420,6 +420,8 @@
     <string name="title_advanced_when">When</string>
     <string name="title_advanced_optimize">Automatically optimize</string>
     <string name="title_advanced_always">Always receive messages for these accounts</string>
+    <string name="title_advanced_poll_metered">Periodically check for new messages while on a metered network</string>
+    <string name="title_advanced_poll_unmetered">Periodically check for new messages while on a unmetered network</string>
     <string name="title_advanced_schedule">Schedule</string>
     <string name="title_advanced_schedule_workdays">Workdays</string>
     <string name="title_advanced_schedule_weekend">Weekend</string>