Added setting to disable downloading while roaming

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

@@ -71,6 +71,7 @@ public class FragmentOptions extends FragmentBase implements SharedPreferences.O
     private TextView tvConnectionRoaming;
     private SwitchCompat swMetered;
     private Spinner spDownload;
+    private SwitchCompat swRoaming;
 
     private Spinner spStartup;
     private SwitchCompat swDate;
@@ -126,7 +127,7 @@ public class FragmentOptions extends FragmentBase implements SharedPreferences.O
 
     private final static String[] ADVANCED_OPTIONS = new String[]{
             "enabled", "schedule_start", "schedule_end",
-            "metered", "download",
+            "metered", "download", "roaming",
             "startup", "date", "threading", "avatars", "identicons", "name_email", "subject_italic", "flags", "preview",
             "addresses", "monospaced", "autohtml", "autoimages", "actionbar",
             "pull", "swipenav", "autoexpand", "autoclose", "autonext", "collapse", "autoread", "automove",
@@ -155,6 +156,7 @@ public class FragmentOptions extends FragmentBase implements SharedPreferences.O
         tvConnectionRoaming = view.findViewById(R.id.tvConnectionRoaming);
         swMetered = view.findViewById(R.id.swMetered);
         spDownload = view.findViewById(R.id.spDownload);
+        swRoaming = view.findViewById(R.id.swRoaming);
 
         spStartup = view.findViewById(R.id.spStartup);
         swDate = view.findViewById(R.id.swDate);
@@ -281,6 +283,14 @@ public class FragmentOptions extends FragmentBase implements SharedPreferences.O
             }
         });
 
+        swRoaming.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
+            @Override
+            public void onCheckedChanged(CompoundButton compoundButton, boolean checked) {
+                prefs.edit().putBoolean("roaming", checked).apply();
+                ServiceSynchronize.reload(getContext(), "roaming=" + checked);
+            }
+        });
+
         spStartup.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
             @Override
             public void onItemSelected(AdapterView<?> adapterView, View view, int position, long id) {
@@ -652,6 +662,8 @@ public class FragmentOptions extends FragmentBase implements SharedPreferences.O
                 break;
             }
 
+        swRoaming.setChecked(prefs.getBoolean("roaming", true));
+
         boolean compact = prefs.getBoolean("compact", false);
 
         String startup = prefs.getString("startup", "unified");

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

@@ -808,6 +808,7 @@ public class Helper {
     static NetworkState getNetworkState(Context context) {
         SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
         boolean metered = prefs.getBoolean("metered", true);
+        boolean roaming = prefs.getBoolean("roaming", true);
 
         NetworkState state = new NetworkState();
         Boolean isMetered = isMetered(context);
@@ -815,7 +816,7 @@ public class Helper {
         state.unmetered = (isMetered != null && !isMetered);
         state.suitable = (isMetered != null && (metered || !isMetered));
 
-        if (state.connected) {
+        if (state.connected && !roaming) {
             ConnectivityManager cm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
             if (Build.VERSION.SDK_INT < Build.VERSION_CODES.M) {
                 NetworkInfo ani = cm.getActiveNetworkInfo();

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

@@ -225,19 +225,17 @@
             app:layout_constraintStart_toStartOf="parent"
             app:layout_constraintTop_toBottomOf="@id/tvDownload" />
 
-        <TextView
-            android:id="@+id/tvRoamingHint"
-            android:layout_width="0dp"
+        <androidx.appcompat.widget.SwitchCompat
+            android:id="@+id/swRoaming"
+            android:layout_width="match_parent"
             android:layout_height="wrap_content"
             android:layout_marginStart="12dp"
-            android:layout_marginTop="6dp"
-            android:layout_marginEnd="60dp"
-            android:text="@string/title_advanced_roaming_hint"
-            android:textAppearance="@style/TextAppearance.AppCompat.Small"
-            android:textStyle="italic"
-            app:layout_constraintEnd_toEndOf="parent"
+            android:layout_marginTop="12dp"
+            android:layout_marginEnd="12dp"
+            android:text="@string/title_advanced_roaming"
             app:layout_constraintStart_toStartOf="parent"
-            app:layout_constraintTop_toBottomOf="@id/spDownload" />
+            app:layout_constraintTop_toBottomOf="@id/spDownload"
+            app:switchPadding="12dp" />
 
         <TextView
             android:id="@+id/tvSectionDisplay"
@@ -248,7 +246,7 @@
             android:text="@string/title_advanced_section_display"
             android:textAppearance="@style/TextAppearance.AppCompat.Medium"
             app:layout_constraintStart_toStartOf="parent"
-            app:layout_constraintTop_toBottomOf="@id/tvRoamingHint" />
+            app:layout_constraintTop_toBottomOf="@id/swRoaming" />
 
         <View
             android:id="@+id/vSeparatorDisplay"

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

@@ -161,6 +161,7 @@
 
     <string name="title_advanced_metered">Use metered connections</string>
     <string name="title_advanced_download">Automatically download messages and attachments on a metered connection up to</string>
+    <string name="title_advanced_roaming">Download messages and attachments while roaming</string>
     <string name="title_advanced_browse">Browse messages on the server</string>
 
     <string name="title_advanced_startup">Show on start screen</string>
@@ -206,7 +207,6 @@
     <string name="title_advanced_enabled_hint">Globally disable or enable receiving and sending of messages</string>
     <string name="title_advanced_metered_hint">Metered connections are generally mobile connections or paid Wi-Fi hotspots</string>
     <string name="title_advanced_metered_warning">Disabling this option will disable receiving and sending messages on mobile internet connections</string>
-    <string name="title_advanced_roaming_hint">Message texts and attachments will never be downloaded when roaming</string>
     <string name="title_advanced_browse_hint">Fetch more messages when scrolling down</string>
     <string name="title_advanced_threading_hint">Group messages related to each other</string>
     <string name="title_advanced_name_email_hint">When disabled only names will be shown when available</string>