Do not use background threads for download UI events.

src/org/thoughtcrime/securesms/components/AudioView.java

@@ -31,7 +31,6 @@ import org.thoughtcrime.securesms.events.PartProgressEvent;
 import org.thoughtcrime.securesms.logging.Log;
 import org.thoughtcrime.securesms.mms.AudioSlide;
 import org.thoughtcrime.securesms.mms.SlideClickListener;
-import org.thoughtcrime.securesms.util.Util;
 
 import java.io.IOException;
 import java.util.concurrent.TimeUnit;
@@ -320,16 +319,11 @@ public class AudioView extends FrameLayout implements AudioSlidePlayer.Listener
     }
   }
 
-  @Subscribe(sticky = true, threadMode = ThreadMode.ASYNC)
+  @Subscribe(sticky = true, threadMode = ThreadMode.MAIN)
   public void onEventAsync(final PartProgressEvent event) {
-    if (audioSlidePlayer != null && event.attachment.equals(this.audioSlidePlayer.getAudioSlide().asAttachment())) {
-      Util.runOnMain(new Runnable() {
-        @Override
-        public void run() {
+    if (audioSlidePlayer != null && event.attachment.equals(audioSlidePlayer.getAudioSlide().asAttachment())) {
       downloadProgress.setInstantProgress(((float) event.progress) / event.total);
     }
-      });
-    }
   }
 
 }

src/org/thoughtcrime/securesms/components/DocumentView.java

@@ -8,7 +8,6 @@ import android.graphics.PorterDuff;
 import android.support.annotation.AttrRes;
 import android.support.annotation.NonNull;
 import android.support.annotation.Nullable;
-import android.support.v4.graphics.drawable.DrawableCompat;
 import android.util.AttributeSet;
 import android.view.View;
 import android.view.ViewGroup;
@@ -147,16 +146,11 @@ public class DocumentView extends FrameLayout {
     return "";
   }
 
-  @Subscribe(sticky = true, threadMode = ThreadMode.ASYNC)
+  @Subscribe(sticky = true, threadMode = ThreadMode.MAIN)
   public void onEventAsync(final PartProgressEvent event) {
-    if (documentSlide != null && event.attachment.equals(this.documentSlide.asAttachment())) {
-      Util.runOnMain(new Runnable() {
-        @Override
-        public void run() {
+    if (documentSlide != null && event.attachment.equals(documentSlide.asAttachment())) {
       downloadProgress.setInstantProgress(((float) event.progress) / event.total);
     }
-      });
-    }
   }
 
   private class DownloadClickedListener implements View.OnClickListener {

src/org/thoughtcrime/securesms/components/TransferControlView.java

@@ -28,7 +28,6 @@ import org.thoughtcrime.securesms.attachments.Attachment;
 import org.thoughtcrime.securesms.database.AttachmentDatabase;
 import org.thoughtcrime.securesms.events.PartProgressEvent;
 import org.thoughtcrime.securesms.mms.Slide;
-import org.thoughtcrime.securesms.util.Util;
 import org.thoughtcrime.securesms.util.ViewUtil;
 
 import java.util.Collections;
@@ -253,13 +252,11 @@ public class TransferControlView extends FrameLayout {
     return totalProgress;
   }
 
-  @Subscribe(sticky = true, threadMode = ThreadMode.ASYNC)
+  @Subscribe(sticky = true, threadMode = ThreadMode.MAIN)
   public void onEventAsync(final PartProgressEvent event) {
     if (downloadProgress.containsKey(event.attachment)) {
-      Util.runOnMain(() -> {
       downloadProgress.put(event.attachment, ((float) event.progress) / event.total);
       progressWheel.setInstantProgress(calculateProgress(downloadProgress));
-      });
     }
   }
 }