Fixed out of memory on viewing large original messages

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

@@ -796,16 +796,8 @@ public class FragmentMessage extends FragmentEx {
     }
 
     private void onMenuShowHtml() {
-        new SimpleTask<String>() {
-            @Override
-            protected String onLoad(Context context, Bundle args) throws Throwable {
-                return message.read(context);
-            }
-
-            @Override
-            protected void onLoaded(Bundle a, String html) {
         Bundle args = new Bundle();
-                args.putString("html", html);
+        args.putLong("id", message.id);
         args.putString("from", MessageHelper.getFormattedAddresses(message.from, true));
 
         FragmentWebView fragment = new FragmentWebView();
@@ -815,8 +807,6 @@ public class FragmentMessage extends FragmentEx {
         fragmentTransaction.replace(R.id.content_frame, fragment).addToBackStack("webview");
         fragmentTransaction.commit();
     }
-        }.load(this, new Bundle());
-    }
 
     private void onMenuUnseen() {
         Bundle args = new Bundle();

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

@@ -19,6 +19,7 @@ package eu.faircode.email;
     Copyright 2018 by Marcel Bokhorst (M66B)
 */
 
+import android.content.Context;
 import android.content.SharedPreferences;
 import android.net.Uri;
 import android.os.Bundle;
@@ -82,13 +83,28 @@ public class FragmentWebView extends FragmentEx {
             String url = args.getString("url");
             webview.loadUrl(url);
             setSubtitle(url);
-        } else if (args.containsKey("html")) {
-            String html = args.getString("html");
+        } else if (args.containsKey("id")) {
+            new SimpleTask<String>() {
+                @Override
+                protected String onLoad(Context context, Bundle args) throws Throwable {
+                    long id = args.getLong("id");
+                    return EntityMessage.read(context, id);
+                }
+
+                @Override
+                protected void onLoaded(Bundle args, String html) {
                     String from = args.getString("from");
                     webview.loadDataWithBaseURL("email://", html, "text/html", "UTF-8", null);
                     setSubtitle(from);
                 }
 
+                @Override
+                protected void onException(Bundle args, Throwable ex) {
+                    Helper.unexpectedError(getContext(), ex);
+                }
+            }.load(this, args);
+        }
+
         ((ActivityBase) getActivity()).addBackPressedListener(new ActivityBase.IBackPressedListener() {
             @Override
             public boolean onBackPressed() {