Improved print header

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

@@ -4484,38 +4484,56 @@ public class FragmentMessages extends FragmentBase implements SharedPreferences.
 
                     if (message.from != null && message.from.length > 0) {
                         Element span = document.createElement("span");
-                        span.text(getString(R.string.title_from) + " " + MessageHelper.formatAddresses(message.from));
+                        Element strong = document.createElement("strong");
-                        p.append(span.html() + "<br>");
+                        strong.text(getString(R.string.title_from));
+                        span.appendChild(strong);
+                        span.appendText(" " + MessageHelper.formatAddresses(message.from));
+                        span.appendElement("br");
+                        p.appendChild(span);
                     }
 
                     if (message.to != null && message.to.length > 0) {
                         Element span = document.createElement("span");
-                        span.text(getString(R.string.title_to) + " " + MessageHelper.formatAddresses(message.to));
+                        Element strong = document.createElement("strong");
-                        p.append(span.html() + "<br>");
+                        strong.text(getString(R.string.title_to));
+                        span.appendChild(strong);
+                        span.appendText(" " + MessageHelper.formatAddresses(message.to));
+                        span.appendElement("br");
+                        p.appendChild(span);
                     }
 
                     if (message.cc != null && message.cc.length > 0) {
                         Element span = document.createElement("span");
-                        span.text(getString(R.string.title_cc) + " " + MessageHelper.formatAddresses(message.cc));
+                        Element strong = document.createElement("strong");
-                        p.append(span.html() + "<br>");
+                        strong.text(getString(R.string.title_cc));
+                        span.appendChild(strong);
+                        span.appendText(" " + MessageHelper.formatAddresses(message.cc));
+                        span.appendElement("br");
+                        p.appendChild(span);
                     }
 
                     {
-                        Element span = document.createElement("span");
                         DateFormat DTF = Helper.getDateTimeInstance(context, SimpleDateFormat.LONG, SimpleDateFormat.LONG);
-                        span.text(getString(R.string.title_received) + " " + DTF.format(message.received));
+
-                        p.append(span.html() + "<br>");
+                        Element span = document.createElement("span");
+                        Element strong = document.createElement("strong");
+                        strong.text(getString(R.string.title_received));
+                        span.appendChild(strong);
+                        span.appendText(" " + DTF.format(message.received));
+                        span.appendElement("br");
+                        p.appendChild(span);
                     }
 
                     if (!TextUtils.isEmpty(message.subject)) {
                         Element span = document.createElement("span");
-                        span.text(message.subject);
+                        span.appendText(message.subject);
-                        p.append(span.html() + "<br>");
+                        span.appendElement("br");
+                        p.appendChild(span);
                     }
 
-                    p.append("<hr><br>");
+                    p.appendElement("hr").appendElement("br");
 
-                    body.prepend(p.html());
+                    body.prependChild(p);
                 }
 
                 return new String[]{message.subject, document.html()};