Keep message bodies

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

@@ -149,8 +149,8 @@ public class FragmentMessages extends FragmentBase {
     private int autoCloseCount = 0;
     private boolean autoExpanded = true;
     private Map<String, List<Long>> values = new HashMap<>();
-    private LongSparseArray<Spanned> bodies = new LongSparseArray<>();
-    private LongSparseArray<String> html = new LongSparseArray<>();
+    private Map<Long, Spanned> bodies = new HashMap<>();
+    private Map<Long, String> html = new HashMap<>();
     private LongSparseArray<TupleAccountSwipes> accountSwipes = new LongSparseArray<>();
 
     private BoundaryCallbackMessages boundaryCallback = null;
@@ -1485,6 +1485,7 @@ public class FragmentMessages extends FragmentBase {
     @Override
     public void onSaveInstanceState(Bundle outState) {
         super.onSaveInstanceState(outState);
+
         outState.putBoolean("fair:autoExpanded", autoExpanded);
         outState.putInt("fair:autoCloseCount", autoCloseCount);
 
@@ -1492,6 +1493,14 @@ public class FragmentMessages extends FragmentBase {
         for (String name : values.keySet())
             outState.putLongArray("fair:name:" + name, Helper.toLongArray(values.get(name)));
 
+        outState.putLongArray("fair:bodies", Helper.toLongArray(bodies.keySet()));
+        for (Long key : bodies.keySet())
+            outState.putString("fair:bodies:" + key, HtmlHelper.toHtml(bodies.get(key)));
+
+        outState.putLongArray("fair:html", Helper.toLongArray(html.keySet()));
+        for (Long key : html.keySet())
+            outState.putString("fair:html:" + key, html.get(key));
+
         if (rvMessage != null) {
             Parcelable rv = rvMessage.getLayoutManager().onSaveInstanceState();
             outState.putParcelable("fair:rv", rv);
@@ -1509,13 +1518,18 @@ public class FragmentMessages extends FragmentBase {
             autoExpanded = savedInstanceState.getBoolean("fair:autoExpanded");
             autoCloseCount = savedInstanceState.getInt("fair:autoCloseCount");
 
-            String[] names = savedInstanceState.getStringArray("fair:values");
-            for (String name : names) {
+            for (String name : savedInstanceState.getStringArray("fair:values")) {
                 values.put(name, new ArrayList<Long>());
                 for (Long value : savedInstanceState.getLongArray("fair:name:" + name))
                     values.get(name).add(value);
             }
 
+            for (long id : savedInstanceState.getLongArray("fair:bodies"))
+                bodies.put(id, HtmlHelper.fromHtml(savedInstanceState.getString("fair:bodies:" + id)));
+
+            for (long id : savedInstanceState.getLongArray("fair:html"))
+                html.put(id, savedInstanceState.getString("fair:html:" + id));
+
             if (rvMessage != null) {
                 Parcelable rv = savedInstanceState.getBundle("fair:rv");
                 rvMessage.getLayoutManager().onRestoreInstanceState(rv);

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

@@ -88,6 +88,7 @@ import java.util.LinkedHashMap;
 import java.util.List;
 import java.util.Map;
 import java.util.Objects;
+import java.util.Set;
 import java.util.concurrent.ThreadFactory;
 
 import javax.mail.Address;
@@ -1002,6 +1003,14 @@ public class Helper {
         return result;
     }
 
+    static long[] toLongArray(Set<Long> set) {
+        long[] result = new long[set.size()];
+        int i = 0;
+        for (Long value : set)
+            result[i++] = value;
+        return result;
+    }
+
     static List<Long> fromLongArray(long[] array) {
         List<Long> result = new ArrayList<>();
         for (int i = 0; i < array.length; i++)