Added setting to disable hiding the time zone

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

@@ -60,6 +60,7 @@ public class FragmentOptionsPrivacy extends FragmentBase implements SharedPrefer
     private SwitchCompat swConfirmImages;
     private SwitchCompat swConfirmHtml;
     private SwitchCompat swDisableTracking;
+    private SwitchCompat swHideTimeZone;
     private Button btnBiometrics;
     private Button btnPin;
     private Spinner spBiometricsTimeout;
@@ -71,7 +72,8 @@ public class FragmentOptionsPrivacy extends FragmentBase implements SharedPrefer
     private Group grpSafeBrowsing;
 
     private final static String[] RESET_OPTIONS = new String[]{
-            "confirm_links", "browse_links", "confirm_images", "confirm_html", "disable_tracking",
+            "confirm_links", "browse_links", "confirm_images", "confirm_html",
+            "disable_tracking", "hide_timezone",
             "biometrics", "pin", "biometrics_timeout",
             "display_hidden", "secure", "safe_browsing"
     };
@@ -92,6 +94,7 @@ public class FragmentOptionsPrivacy extends FragmentBase implements SharedPrefer
         swConfirmImages = view.findViewById(R.id.swConfirmImages);
         swConfirmHtml = view.findViewById(R.id.swConfirmHtml);
         swDisableTracking = view.findViewById(R.id.swDisableTracking);
+        swHideTimeZone = view.findViewById(R.id.swHideTimeZone);
         btnBiometrics = view.findViewById(R.id.btnBiometrics);
         btnPin = view.findViewById(R.id.btnPin);
         spBiometricsTimeout = view.findViewById(R.id.spBiometricsTimeout);
@@ -144,6 +147,13 @@ public class FragmentOptionsPrivacy extends FragmentBase implements SharedPrefer
             }
         });
 
+        swHideTimeZone.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
+            @Override
+            public void onCheckedChanged(CompoundButton compoundButton, boolean checked) {
+                prefs.edit().putBoolean("hide_timezone", checked).apply();
+            }
+        });
+
         btnBiometrics.setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View v) {
@@ -278,6 +288,7 @@ public class FragmentOptionsPrivacy extends FragmentBase implements SharedPrefer
         swConfirmImages.setChecked(prefs.getBoolean("confirm_images", true));
         swConfirmHtml.setChecked(prefs.getBoolean("confirm_html", true));
         swDisableTracking.setChecked(prefs.getBoolean("disable_tracking", true));
+        swHideTimeZone.setChecked(prefs.getBoolean("hide_timezone", true));
 
         boolean biometrics = prefs.getBoolean("biometrics", false);
         btnBiometrics.setText(biometrics

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

@@ -140,6 +140,12 @@ public class MessageHelper {
     static MimeMessageEx from(Context context, EntityMessage message, EntityIdentity identity, Session isession, boolean send)
             throws MessagingException, IOException {
         DB db = DB.getInstance(context);
+        SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
+        int receipt_type = prefs.getInt("receipt_type", 2);
+        boolean hide_timezone = prefs.getBoolean("hide_timezone", true);
+        boolean autocrypt = prefs.getBoolean("autocrypt", true);
+        boolean mutual = prefs.getBoolean("autocrypt_mutual", true);
+
         MimeMessageEx imessage = new MimeMessageEx(isession, message.msgid);
 
         // Flags
@@ -217,8 +223,6 @@ public class MessageHelper {
             if (message.receipt_request != null && message.receipt_request) {
                 String to = (identity.replyto == null ? identity.email : identity.replyto);
 
-                SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
-                int receipt_type = prefs.getInt("receipt_type", 2);
                 // 0=Read receipt
                 // 1=Delivery receipt
                 // 2=Read+delivery receipt
@@ -238,9 +242,8 @@ public class MessageHelper {
             imessage.addHeader("List-Unsubscribe", "<" + message.unsubscribe + ">");
 
         MailDateFormat mdf = new MailDateFormat();
-        mdf.setTimeZone(TimeZone.getTimeZone("UTC"));
+        mdf.setTimeZone(hide_timezone ? TimeZone.getTimeZone("UTC") : TimeZone.getDefault());
         imessage.setHeader("Date", mdf.format(new Date()));
-        //imessage.setSentDate(new Date());
 
         List<EntityAttachment> attachments = db.attachment().getAttachments(message.id);
 
@@ -249,10 +252,6 @@ public class MessageHelper {
                 if (EntityAttachment.PGP_KEY.equals(attachment.encryption)) {
                     InternetAddress from = (InternetAddress) message.from[0];
 
-                    SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
-                    boolean autocrypt = prefs.getBoolean("autocrypt", true);
-                    boolean mutual = prefs.getBoolean("autocrypt_mutual", true);
-
                     if (autocrypt) {
                         String mode = (mutual ? "mutual" : "nopreference");
 

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

@@ -126,6 +126,18 @@
             app:layout_constraintTop_toBottomOf="@+id/tvConfirmHtmlHint"
             app:switchPadding="12dp" />
 
+        <androidx.appcompat.widget.SwitchCompat
+            android:id="@+id/swHideTimeZone"
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="12dp"
+            android:checked="true"
+            android:text="@string/title_advanced_hide_timezone"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toBottomOf="@+id/swDisableTracking"
+            app:switchPadding="12dp" />
+
         <eu.faircode.email.FixedTextView
             android:id="@+id/tvBiometrics"
             android:layout_width="0dp"
@@ -137,7 +149,7 @@
             android:textColor="?android:attr/textColorPrimary"
             app:layout_constraintEnd_toEndOf="parent"
             app:layout_constraintStart_toStartOf="parent"
-            app:layout_constraintTop_toBottomOf="@id/swDisableTracking" />
+            app:layout_constraintTop_toBottomOf="@id/swHideTimeZone" />
 
         <Button
             android:id="@+id/btnBiometrics"

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

@@ -414,6 +414,7 @@
     <string name="title_advanced_confirm_images">Confirm showing images</string>
     <string name="title_advanced_confirm_html">Show reformatted messages by default</string>
     <string name="title_advanced_tracking">Automatically recognize and disable tracking images</string>
+    <string name="title_advanced_hide_timezone">Send messages without timezone data</string>
     <string name="title_advanced_display_hidden">Display hidden message texts</string>
     <string name="title_advanced_secure">Hide from recent apps screen and prevent taking screenshots</string>
     <string name="title_advanced_pin">PIN</string>