Limit number of progress updates

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

@@ -1800,6 +1800,7 @@ public class FragmentCompose extends FragmentBase {
         }
 
         long size = 0;
+        int lastProgress = 0;
         try {
             File file = attachment.getFile(context);
 
@@ -1815,8 +1816,13 @@ public class FragmentCompose extends FragmentBase {
                     os.write(buffer, 0, len);
 
                     // Update progress
-                    if (attachment.size != null && attachment.size > 0)
-                        db.attachment().setProgress(attachment.id, (int) (size * 100 / attachment.size));
+                    if (attachment.size != null && attachment.size > 0) {
+                        int progress = (int) (size * 100 / attachment.size / 20 * 20);
+                        if (progress != lastProgress) {
+                            lastProgress = progress;
+                            db.attachment().setProgress(attachment.id, progress);
+                        }
+                    }
                 }
 
                 if (image) {

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

@@ -908,6 +908,7 @@ public class MessageHelper {
             try (InputStream is = apart.part.getInputStream()) {
                 long size = 0;
                 long total = apart.part.getSize();
+                int lastprogress = 0;
 
                 try (OutputStream os = new BufferedOutputStream(new FileOutputStream(file))) {
                     byte[] buffer = new byte[ATTACHMENT_BUFFER_SIZE];
@@ -916,8 +917,13 @@ public class MessageHelper {
                         os.write(buffer, 0, len);
 
                         // Update progress
-                        if (total > 0)
-                            db.attachment().setProgress(id, (int) (size * 100 / total));
+                        if (total > 0) {
+                            int progress = (int) (size * 100 / total / 20 * 20);
+                            if (progress != lastprogress) {
+                                lastprogress = progress;
+                                db.attachment().setProgress(id, progress);
+                            }
+                        }
                     }
                 }