Work on a crash fix

Clover/app/src/main/java/org/floens/chan/core/presenter/ImageViewerPresenter.java

@@ -25,6 +25,7 @@ import org.floens.chan.core.model.Loadable;
 import org.floens.chan.core.model.PostImage;
 import org.floens.chan.core.settings.ChanSettings;
 import org.floens.chan.ui.view.MultiImageView;
+import org.floens.chan.utils.Logger;
 
 import java.util.ArrayList;
 import java.util.List;
@@ -187,6 +188,8 @@ public class ImageViewerPresenter implements MultiImageView.Callback, ViewPager.
     private void onLowResInCenter() {
         PostImage postImage = images.get(selectedPosition);
 
+        Logger.test("onLowResInCenter " + postImage.imageUrl);
+
         if (imageAutoLoad(postImage) && !postImage.spoiler) {
             if (postImage.type == PostImage.Type.STATIC) {
                 callback.setImageMode(postImage, MultiImageView.Mode.BIGIMAGE);

Clover/app/src/main/java/org/floens/chan/ui/view/MultiImageView.java

@@ -109,7 +109,8 @@ public class MultiImageView extends FrameLayout implements View.OnClickListener
 
     public void setMode(final Mode newMode) {
         if (this.mode != newMode) {
-//            Logger.d(TAG, "Changing mode from " + this.mode + " to " + newMode + " for " + postImage.thumbnailUrl);
+            Logger.d(TAG, "Changing mode from " + this.mode + " to " + newMode + " for " + postImage.thumbnailUrl);
+            Mode oldMode = this.mode;
             this.mode = newMode;
 
             AndroidUtils.waitForMeasure(this, new AndroidUtils.OnMeasuredCallback() {
@@ -159,6 +160,10 @@ public class MultiImageView extends FrameLayout implements View.OnClickListener
             return;
         }
 
+        if (thumbnailRequest != null) {
+            return;
+        }
+
         // Also use volley for the thumbnails
         thumbnailRequest = Chan.getVolleyImageLoader().get(thumbnailUrl, new com.android.volley.toolbox.ImageLoader.ImageListener() {
             @Override
@@ -186,6 +191,10 @@ public class MultiImageView extends FrameLayout implements View.OnClickListener
             return;
         }
 
+        if (bigImageRequest != null) {
+            return;
+        }
+
         callback.showProgress(this, true);
         bigImageRequest = Chan.getFileCache().downloadFile(imageUrl, new FileCache.DownloadedCallback() {
             @Override
@@ -243,6 +252,10 @@ public class MultiImageView extends FrameLayout implements View.OnClickListener
             return;
         }
 
+        if (gifRequest != null) {
+            return;
+        }
+
         callback.showProgress(this, true);
         gifRequest = Chan.getFileCache().downloadFile(gifUrl, new FileCache.DownloadedCallback() {
             @Override
@@ -294,6 +307,10 @@ public class MultiImageView extends FrameLayout implements View.OnClickListener
     }
 
     public void setVideo(String videoUrl) {
+        if (videoRequest != null) {
+            return;
+        }
+
         callback.showProgress(this, true);
         videoRequest = Chan.getFileCache().downloadFile(videoUrl, new FileCache.DownloadedCallback() {
             @Override
@@ -359,6 +376,8 @@ public class MultiImageView extends FrameLayout implements View.OnClickListener
 
             videoView.setVideoPath(file.getAbsolutePath());
 
+            Logger.e(TAG, "videoView.start " + postImage.imageUrl + ", " + getWidth() + ", " + getHeight() + ", " + (isAttachedToWindow()));
+
             try {
                 videoView.start();
             } catch (IllegalStateException e) {