New option: Settings->Miscellaneous->Post Feed Preview Max Resolution. Fix low resolution post previews when showing them for the first time. Tweak themed icon.

app/src/main/java/ml/docilealligator/infinityforreddit/SaveMemoryCenterInisdeDownsampleStrategy.java

@@ -4,16 +4,22 @@ import com.bumptech.glide.load.resource.bitmap.DownsampleStrategy;
 
 public class SaveMemoryCenterInisdeDownsampleStrategy extends DownsampleStrategy {
 
+    private int threshold;
+
+    public SaveMemoryCenterInisdeDownsampleStrategy(int threshold) {
+        this.threshold = threshold;
+    }
+
     @Override
     public float getScaleFactor(int sourceWidth, int sourceHeight, int requestedWidth, int requestedHeight) {
         int originalSourceWidth = sourceWidth;
         int originalSourceHeight = sourceHeight;
-        if (sourceWidth * sourceHeight > 5_000_000) {
+        if (sourceWidth * sourceHeight > threshold) {
             int divisor = 2;
             do {
                 sourceWidth /= divisor;
                 sourceHeight /= divisor;
-            } while (sourceWidth * sourceHeight > 5_000_000);
+            } while (sourceWidth * sourceHeight > threshold);
         }
 
         float widthPercentage = (float) requestedWidth / (float) sourceWidth;
@@ -26,4 +32,8 @@ public class SaveMemoryCenterInisdeDownsampleStrategy extends DownsampleStrategy
     public SampleSizeRounding getSampleSizeRounding(int sourceWidth, int sourceHeight, int requestedWidth, int requestedHeight) {
         return SampleSizeRounding.MEMORY;
     }
+
+    public void setThreshold(int threshold) {
+        this.threshold = threshold;
+    }
 }

app/src/main/java/ml/docilealligator/infinityforreddit/adapters/PostDetailRecyclerViewAdapter.java

@@ -141,6 +141,7 @@ public class PostDetailRecyclerViewAdapter extends RecyclerView.Adapter<Recycler
     private Retrofit mStreamableRetrofit;
     private RedditDataRoomDatabase mRedditDataRoomDatabase;
     private RequestManager mGlide;
+    private SaveMemoryCenterInisdeDownsampleStrategy mSaveMemoryCenterInsideDownSampleStrategy;
     private Markwon mPostDetailMarkwon;
     private final MarkwonAdapter mMarkwonAdapter;
     private String mAccessToken;
@@ -233,6 +234,7 @@ public class PostDetailRecyclerViewAdapter extends RecyclerView.Adapter<Recycler
         mStreamableRetrofit = streamableRetrofit;
         mRedditDataRoomDatabase = redditDataRoomDatabase;
         mGlide = glide;
+        mSaveMemoryCenterInsideDownSampleStrategy = new SaveMemoryCenterInisdeDownsampleStrategy(Integer.parseInt(sharedPreferences.getString(SharedPreferencesUtils.POST_FEED_MAX_RESOLUTION, "5000000")));
         mSecondaryTextColor = customThemeWrapper.getSecondaryTextColor();
         int markdownColor = customThemeWrapper.getPostContentColor();
         int postSpoilerBackgroundColor = markdownColor | 0xFF000000;
@@ -655,7 +657,7 @@ public class PostDetailRecyclerViewAdapter extends RecyclerView.Adapter<Recycler
                 Post.Preview preview = getSuitablePreview(mPost.getPreviews());
                 if (preview != null) {
                     ((PostDetailVideoAutoplayViewHolder) holder).aspectRatioFrameLayout.setAspectRatio((float) preview.getPreviewWidth() / preview.getPreviewHeight());
-                    mGlide.load(preview.getPreviewUrl()).centerInside().downsample(new SaveMemoryCenterInisdeDownsampleStrategy()).into(((PostDetailVideoAutoplayViewHolder) holder).previewImageView);
+                    mGlide.load(preview.getPreviewUrl()).centerInside().downsample(mSaveMemoryCenterInsideDownSampleStrategy).into(((PostDetailVideoAutoplayViewHolder) holder).previewImageView);
                 } else {
                     ((PostDetailVideoAutoplayViewHolder) holder).aspectRatioFrameLayout.setAspectRatio(1);
                 }
@@ -916,7 +918,7 @@ public class PostDetailRecyclerViewAdapter extends RecyclerView.Adapter<Recycler
             if (blurImage) {
                 imageRequestBuilder.apply(RequestOptions.bitmapTransform(new BlurTransformation(50, 10))).into(((PostDetailImageAndGifAutoplayViewHolder) holder).mImageView);
             } else {
-                imageRequestBuilder.centerInside().downsample(new SaveMemoryCenterInisdeDownsampleStrategy()).into(((PostDetailImageAndGifAutoplayViewHolder) holder).mImageView);
+                imageRequestBuilder.centerInside().downsample(mSaveMemoryCenterInsideDownSampleStrategy).into(((PostDetailImageAndGifAutoplayViewHolder) holder).mImageView);
             }
         } else if (holder instanceof PostDetailVideoAndGifPreviewHolder) {
             RequestBuilder<Drawable> imageRequestBuilder = mGlide.load(preview.getPreviewUrl())
@@ -944,7 +946,7 @@ public class PostDetailRecyclerViewAdapter extends RecyclerView.Adapter<Recycler
                 imageRequestBuilder.apply(RequestOptions.bitmapTransform(new BlurTransformation(50, 10)))
                         .into(((PostDetailVideoAndGifPreviewHolder) holder).mImageView);
             } else {
-                imageRequestBuilder.centerInside().downsample(new SaveMemoryCenterInisdeDownsampleStrategy()).into(((PostDetailVideoAndGifPreviewHolder) holder).mImageView);
+                imageRequestBuilder.centerInside().downsample(mSaveMemoryCenterInsideDownSampleStrategy).into(((PostDetailVideoAndGifPreviewHolder) holder).mImageView);
             }
         } else if (holder instanceof PostDetailLinkViewHolder) {
             RequestBuilder<Drawable> imageRequestBuilder = mGlide.load(preview.getPreviewUrl())
@@ -972,7 +974,7 @@ public class PostDetailRecyclerViewAdapter extends RecyclerView.Adapter<Recycler
                 imageRequestBuilder.apply(RequestOptions.bitmapTransform(new BlurTransformation(50, 10)))
                         .into(((PostDetailLinkViewHolder) holder).mImageView);
             } else {
-                imageRequestBuilder.centerInside().downsample(new SaveMemoryCenterInisdeDownsampleStrategy()).into(((PostDetailLinkViewHolder) holder).mImageView);
+                imageRequestBuilder.centerInside().downsample(mSaveMemoryCenterInsideDownSampleStrategy).into(((PostDetailLinkViewHolder) holder).mImageView);
             }
         } else if (holder instanceof PostDetailGalleryViewHolder) {
             RequestBuilder<Drawable> imageRequestBuilder = mGlide.load(preview.getPreviewUrl())
@@ -999,7 +1001,7 @@ public class PostDetailRecyclerViewAdapter extends RecyclerView.Adapter<Recycler
             if ((mPost.isNSFW() && mNeedBlurNsfw && !(mDoNotBlurNsfwInNsfwSubreddits && mFragment != null && mFragment.getIsNsfwSubreddit()) && !(mPost.getPostType() == Post.GIF_TYPE && mAutoplayNsfwVideos)) || (mPost.isSpoiler() && mNeedBlurSpoiler)) {
                 imageRequestBuilder.apply(RequestOptions.bitmapTransform(new BlurTransformation(50, 10))).into(((PostDetailGalleryViewHolder) holder).mImageView);
             } else {
-                imageRequestBuilder.centerInside().downsample(new SaveMemoryCenterInisdeDownsampleStrategy()).into(((PostDetailGalleryViewHolder) holder).mImageView);
+                imageRequestBuilder.centerInside().downsample(mSaveMemoryCenterInsideDownSampleStrategy).into(((PostDetailGalleryViewHolder) holder).mImageView);
             }
         }
     }

app/src/main/java/ml/docilealligator/infinityforreddit/adapters/PostRecyclerViewAdapter.java

@@ -11,9 +11,11 @@ import android.graphics.drawable.Drawable;
 import android.net.Uri;
 import android.os.Bundle;
 import android.os.Handler;
+import android.util.Log;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
+import android.view.ViewTreeObserver;
 import android.widget.FrameLayout;
 import android.widget.ImageView;
 import android.widget.LinearLayout;
@@ -135,6 +137,8 @@ public class PostRecyclerViewAdapter extends PagingDataAdapter<Post, RecyclerVie
     private Retrofit mStreamableRetrofit;
     private String mAccessToken;
     private RequestManager mGlide;
+    private int mMaxResolution;
+    private SaveMemoryCenterInisdeDownsampleStrategy mSaveMemoryCenterInsideDownsampleStrategy;
     private Locale mLocale;
     private boolean canStartActivity = true;
     private int mPostType;
@@ -332,6 +336,8 @@ public class PostRecyclerViewAdapter extends PagingDataAdapter<Post, RecyclerVie
 
             mScale = resources.getDisplayMetrics().density;
             mGlide = Glide.with(mActivity);
+            mMaxResolution = Integer.parseInt(mSharedPreferences.getString(SharedPreferencesUtils.POST_FEED_MAX_RESOLUTION, "5000000"));
+            mSaveMemoryCenterInsideDownsampleStrategy = new SaveMemoryCenterInisdeDownsampleStrategy(mMaxResolution);
             mLocale = locale;
             mExoCreator = exoCreator;
             mCallback = callback;
@@ -687,7 +693,7 @@ public class PostRecyclerViewAdapter extends PagingDataAdapter<Post, RecyclerVie
                     Post.Preview preview = getSuitablePreview(post.getPreviews());
                     if (!mFixedHeightPreviewInCard && preview != null) {
                         ((PostVideoAutoplayViewHolder) holder).aspectRatioFrameLayout.setAspectRatio((float) preview.getPreviewWidth() / preview.getPreviewHeight());
-                        mGlide.load(preview.getPreviewUrl()).centerInside().downsample(new SaveMemoryCenterInisdeDownsampleStrategy()).into(((PostVideoAutoplayViewHolder) holder).previewImageView);
+                        mGlide.load(preview.getPreviewUrl()).centerInside().downsample(mSaveMemoryCenterInsideDownsampleStrategy).into(((PostVideoAutoplayViewHolder) holder).previewImageView);
                     } else {
                         ((PostVideoAutoplayViewHolder) holder).aspectRatioFrameLayout.setAspectRatio(1);
                     }
@@ -810,7 +816,13 @@ public class PostRecyclerViewAdapter extends PagingDataAdapter<Post, RecyclerVie
                                 ((PostWithPreviewTypeViewHolder) holder).imageView
                                         .setRatio((float) preview.getPreviewHeight() / preview.getPreviewWidth());
                             }
-                            loadImage(holder);
+                            ((PostWithPreviewTypeViewHolder) holder).imageView.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
+                                @Override
+                                public void onGlobalLayout() {
+                                    ((PostWithPreviewTypeViewHolder) holder).imageView.getViewTreeObserver().removeOnGlobalLayoutListener(this);
+                                    loadImage(holder);
+                                }
+                            });
                         } else {
                             ((PostWithPreviewTypeViewHolder) holder).noPreviewLinkImageView.setVisibility(View.VISIBLE);
                             if (post.getPostType() == Post.VIDEO_TYPE) {
@@ -839,7 +851,7 @@ public class PostRecyclerViewAdapter extends PagingDataAdapter<Post, RecyclerVie
                     Post.Preview preview = getSuitablePreview(post.getPreviews());
                     if (!mFixedHeightPreviewInCard && preview != null) {
                         ((PostCard2VideoAutoplayViewHolder) holder).aspectRatioFrameLayout.setAspectRatio((float) preview.getPreviewWidth() / preview.getPreviewHeight());
-                        mGlide.load(preview.getPreviewUrl()).centerInside().downsample(new SaveMemoryCenterInisdeDownsampleStrategy()).into(((PostCard2VideoAutoplayViewHolder) holder).previewImageView);
+                        mGlide.load(preview.getPreviewUrl()).centerInside().downsample(mSaveMemoryCenterInsideDownsampleStrategy).into(((PostCard2VideoAutoplayViewHolder) holder).previewImageView);
                     } else {
                         ((PostCard2VideoAutoplayViewHolder) holder).aspectRatioFrameLayout.setAspectRatio(1);
                     }
@@ -964,7 +976,13 @@ public class PostRecyclerViewAdapter extends PagingDataAdapter<Post, RecyclerVie
                                 ((PostCard2WithPreviewViewHolder) holder).imageView
                                         .setRatio((float) preview.getPreviewHeight() / preview.getPreviewWidth());
                             }
-                            loadImage(holder);
+                            ((PostCard2WithPreviewViewHolder) holder).imageView.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
+                                @Override
+                                public void onGlobalLayout() {
+                                    ((PostCard2WithPreviewViewHolder) holder).imageView.getViewTreeObserver().removeOnGlobalLayoutListener(this);
+                                    loadImage(holder);
+                                }
+                            });
                         } else {
                             ((PostCard2WithPreviewViewHolder) holder).progressBar.setVisibility(View.GONE);
                             ((PostCard2WithPreviewViewHolder) holder).noPreviewImageView.setVisibility(View.VISIBLE);
@@ -1342,7 +1360,13 @@ public class PostRecyclerViewAdapter extends PagingDataAdapter<Post, RecyclerVie
                                 ((PostGalleryViewHolder) holder).imageView
                                         .setRatio((float) preview.getPreviewHeight() / preview.getPreviewWidth());
                             }
-                            loadImage(holder);
+                            ((PostGalleryViewHolder) holder).imageView.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
+                                @Override
+                                public void onGlobalLayout() {
+                                    ((PostGalleryViewHolder) holder).imageView.getViewTreeObserver().removeOnGlobalLayoutListener(this);
+                                    loadImage(holder);
+                                }
+                            });
                         } else {
                             ((PostGalleryViewHolder) holder).noPreviewImageView.setVisibility(View.VISIBLE);
                             if (post.getPostType() == Post.VIDEO_TYPE) {
@@ -1400,7 +1424,13 @@ public class PostRecyclerViewAdapter extends PagingDataAdapter<Post, RecyclerVie
                                 ((PostGalleryViewHolder) holder).imageView
                                         .setRatio((float) preview.getPreviewHeight() / preview.getPreviewWidth());
                             }
-                            loadImage(holder);
+                            ((PostGalleryViewHolder) holder).imageView.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
+                                @Override
+                                public void onGlobalLayout() {
+                                    ((PostGalleryViewHolder) holder).imageView.getViewTreeObserver().removeOnGlobalLayoutListener(this);
+                                    loadImage(holder);
+                                }
+                            });
                         } else {
                             ((PostGalleryViewHolder) holder).noPreviewImageView.setVisibility(View.VISIBLE);
                             ((PostGalleryViewHolder) holder).noPreviewImageView.setImageResource(R.drawable.ic_outline_video_24dp);
@@ -1424,7 +1454,13 @@ public class PostRecyclerViewAdapter extends PagingDataAdapter<Post, RecyclerVie
                                 ((PostGalleryViewHolder) holder).imageView
                                         .setRatio((float) preview.getPreviewHeight() / preview.getPreviewWidth());
                             }
-                            loadImage(holder);
+                            ((PostGalleryViewHolder) holder).imageView.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
+                                @Override
+                                public void onGlobalLayout() {
+                                    ((PostGalleryViewHolder) holder).imageView.getViewTreeObserver().removeOnGlobalLayoutListener(this);
+                                    loadImage(holder);
+                                }
+                            });
                         } else {
                             ((PostGalleryViewHolder) holder).noPreviewImageView.setVisibility(View.VISIBLE);
                             ((PostGalleryViewHolder) holder).noPreviewImageView.setImageResource(R.drawable.ic_link);
@@ -1458,7 +1494,13 @@ public class PostRecyclerViewAdapter extends PagingDataAdapter<Post, RecyclerVie
                                 ((PostGalleryViewHolder) holder).imageView
                                         .setRatio((float) preview.getPreviewHeight() / preview.getPreviewWidth());
                             }
-                            loadImage(holder);
+                            ((PostGalleryViewHolder) holder).imageView.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
+                                @Override
+                                public void onGlobalLayout() {
+                                    ((PostGalleryViewHolder) holder).imageView.getViewTreeObserver().removeOnGlobalLayoutListener(this);
+                                    loadImage(holder);
+                                }
+                            });
                         } else {
                             ((PostGalleryViewHolder) holder).noPreviewImageView.setVisibility(View.VISIBLE);
                             ((PostGalleryViewHolder) holder).noPreviewImageView.setImageResource(R.drawable.ic_gallery_24dp);
@@ -1481,10 +1523,10 @@ public class PostRecyclerViewAdapter extends PagingDataAdapter<Post, RecyclerVie
                 previewIndex = 0;
             }
             preview = previews.get(previewIndex);
-            if (preview.getPreviewWidth() * preview.getPreviewHeight() > 5_000_000) {
+            if (preview.getPreviewWidth() * preview.getPreviewHeight() > mMaxResolution) {
                 for (int i = previews.size() - 1; i >= 1; i--) {
                     preview = previews.get(i);
-                    if (preview.getPreviewWidth() * preview.getPreviewHeight() <= 5_000_000) {
+                    if (preview.getPreviewWidth() * preview.getPreviewHeight() <= mMaxResolution) {
                         return preview;
                     }
                 }
@@ -1513,7 +1555,7 @@ public class PostRecyclerViewAdapter extends PagingDataAdapter<Post, RecyclerVie
                     imageRequestBuilder.apply(RequestOptions.bitmapTransform(new BlurTransformation(50, 10)))
                             .into(((PostWithPreviewTypeViewHolder) holder).imageView);
                 } else {
-                    imageRequestBuilder.centerInside().downsample(new SaveMemoryCenterInisdeDownsampleStrategy()).into(((PostWithPreviewTypeViewHolder) holder).imageView);
+                    imageRequestBuilder.downsample(mSaveMemoryCenterInsideDownsampleStrategy).into(((PostWithPreviewTypeViewHolder) holder).imageView);
                 }
             }
         } else if (holder instanceof PostCompactBaseViewHolder) {
@@ -1553,7 +1595,7 @@ public class PostRecyclerViewAdapter extends PagingDataAdapter<Post, RecyclerVie
                     imageRequestBuilder.apply(RequestOptions.bitmapTransform(new BlurTransformation(50, 10)))
                             .into(((PostGalleryViewHolder) holder).imageView);
                 } else {
-                    imageRequestBuilder.centerInside().downsample(new SaveMemoryCenterInisdeDownsampleStrategy()).into(((PostGalleryViewHolder) holder).imageView);
+                    imageRequestBuilder.centerInside().downsample(mSaveMemoryCenterInsideDownsampleStrategy).into(((PostGalleryViewHolder) holder).imageView);
                 }
             }
         } else if (holder instanceof PostCard2WithPreviewViewHolder) {
@@ -1573,7 +1615,7 @@ public class PostRecyclerViewAdapter extends PagingDataAdapter<Post, RecyclerVie
                     imageRequestBuilder.apply(RequestOptions.bitmapTransform(new BlurTransformation(50, 10)))
                             .into(((PostCard2WithPreviewViewHolder) holder).imageView);
                 } else {
-                    imageRequestBuilder.centerInside().downsample(new SaveMemoryCenterInisdeDownsampleStrategy()).into(((PostCard2WithPreviewViewHolder) holder).imageView);
+                    imageRequestBuilder.centerInside().downsample(mSaveMemoryCenterInsideDownsampleStrategy).into(((PostCard2WithPreviewViewHolder) holder).imageView);
                 }
             }
         }
@@ -1741,6 +1783,13 @@ public class PostRecyclerViewAdapter extends PagingDataAdapter<Post, RecyclerVie
         mHideTextPostContent = hideTextPostContent;
     }
 
+    public void setPostFeedMaxResolution(int postFeedMaxResolution) {
+        mMaxResolution = postFeedMaxResolution;
+        if (mSaveMemoryCenterInsideDownsampleStrategy != null) {
+            mSaveMemoryCenterInsideDownsampleStrategy.setThreshold(postFeedMaxResolution);
+        }
+    }
+
     @Override
     public void onViewRecycled(@NonNull RecyclerView.ViewHolder holder) {
         super.onViewRecycled(holder);

app/src/main/java/ml/docilealligator/infinityforreddit/customviews/AspectRatioGifImageView.java

@@ -37,6 +37,7 @@ public class AspectRatioGifImageView extends GifImageView {
 
     }
 
+    @Override
     protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
         super.onMeasure(widthMeasureSpec, heightMeasureSpec);
         int width = this.getMeasuredWidth();

app/src/main/java/ml/docilealligator/infinityforreddit/customviews/CustomFontEditTextPreference.java

@@ -0,0 +1,52 @@
+package ml.docilealligator.infinityforreddit.customviews;
+
+import android.content.Context;
+import android.graphics.Typeface;
+import android.util.AttributeSet;
+import android.view.View;
+import android.widget.TextView;
+
+import androidx.preference.EditTextPreference;
+import androidx.preference.PreferenceViewHolder;
+
+import ml.docilealligator.infinityforreddit.CustomFontReceiver;
+
+public class CustomFontEditTextPreference extends EditTextPreference implements CustomFontReceiver {
+    private Typeface typeface;
+
+    public CustomFontEditTextPreference(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
+        super(context, attrs, defStyleAttr, defStyleRes);
+    }
+
+    public CustomFontEditTextPreference(Context context, AttributeSet attrs, int defStyleAttr) {
+        super(context, attrs, defStyleAttr);
+    }
+
+    public CustomFontEditTextPreference(Context context, AttributeSet attrs) {
+        super(context, attrs);
+    }
+
+    public CustomFontEditTextPreference(Context context) {
+        super(context);
+    }
+
+    @Override
+    public void onBindViewHolder(PreferenceViewHolder holder) {
+        super.onBindViewHolder(holder);
+        if (typeface != null) {
+            View titleTextView = holder.findViewById(android.R.id.title);
+            if (titleTextView instanceof TextView) {
+                ((TextView) titleTextView).setTypeface(typeface);
+            }
+            View summaryTextView = holder.findViewById(android.R.id.summary);
+            if (summaryTextView instanceof TextView) {
+                ((TextView) summaryTextView).setTypeface(typeface);
+            }
+        }
+    }
+
+    @Override
+    public void setCustomFont(Typeface typeface, Typeface titleTypeface, Typeface contentTypeface) {
+        this.typeface = typeface;
+    }
+}

app/src/main/java/ml/docilealligator/infinityforreddit/events/ChangePostFeedMaxResolutionEvent.java

@@ -0,0 +1,9 @@
+package ml.docilealligator.infinityforreddit.events;
+
+public class ChangePostFeedMaxResolutionEvent {
+    public int postFeedMaxResolution;
+
+    public ChangePostFeedMaxResolutionEvent(int postFeedMaxResolution) {
+        this.postFeedMaxResolution = postFeedMaxResolution;
+    }
+}

app/src/main/java/ml/docilealligator/infinityforreddit/fragments/PostFragment.java

@@ -109,6 +109,7 @@ import ml.docilealligator.infinityforreddit.events.ChangeMuteNSFWVideoEvent;
 import ml.docilealligator.infinityforreddit.events.ChangeNSFWBlurEvent;
 import ml.docilealligator.infinityforreddit.events.ChangeNetworkStatusEvent;
 import ml.docilealligator.infinityforreddit.events.ChangeOnlyDisablePreviewInVideoAndGifPostsEvent;
+import ml.docilealligator.infinityforreddit.events.ChangePostFeedMaxResolutionEvent;
 import ml.docilealligator.infinityforreddit.events.ChangePostLayoutEvent;
 import ml.docilealligator.infinityforreddit.events.ChangePullToRefreshEvent;
 import ml.docilealligator.infinityforreddit.events.ChangeRememberMutingOptionInPostFeedEvent;
@@ -2089,6 +2090,14 @@ public class PostFragment extends Fragment implements FragmentCommunicator {
         }
     }
 
+    @Subscribe
+    public void onChangePostFeedMaxResolutionEvent(ChangePostFeedMaxResolutionEvent event) {
+        if (mAdapter != null) {
+            mAdapter.setPostFeedMaxResolution(event.postFeedMaxResolution);
+            refreshAdapter();
+        }
+    }
+
     private void refreshAdapter() {
         int previousPosition = -1;
         if (mLinearLayoutManager != null) {

app/src/main/java/ml/docilealligator/infinityforreddit/settings/MiscellaneousPreferenceFragment.java

@@ -2,7 +2,9 @@ package ml.docilealligator.infinityforreddit.settings;
 
 import android.content.SharedPreferences;
 import android.os.Bundle;
+import android.widget.Toast;
 
+import androidx.preference.EditTextPreference;
 import androidx.preference.ListPreference;
 import androidx.preference.SwitchPreference;
 
@@ -14,6 +16,7 @@ import javax.inject.Named;
 import ml.docilealligator.infinityforreddit.Infinity;
 import ml.docilealligator.infinityforreddit.R;
 import ml.docilealligator.infinityforreddit.customviews.CustomFontPreferenceFragmentCompat;
+import ml.docilealligator.infinityforreddit.events.ChangePostFeedMaxResolutionEvent;
 import ml.docilealligator.infinityforreddit.events.ChangeSavePostFeedScrolledPositionEvent;
 import ml.docilealligator.infinityforreddit.events.RecreateActivityEvent;
 import ml.docilealligator.infinityforreddit.utils.SharedPreferencesUtils;
@@ -41,6 +44,7 @@ public class MiscellaneousPreferenceFragment extends CustomFontPreferenceFragmen
         ListPreference mainPageBackButtonActionListPreference = findPreference(SharedPreferencesUtils.MAIN_PAGE_BACK_BUTTON_ACTION);
         SwitchPreference savePostFeedScrolledPositionSwitch = findPreference(SharedPreferencesUtils.SAVE_FRONT_PAGE_SCROLLED_POSITION);
         ListPreference languageListPreference = findPreference(SharedPreferencesUtils.LANGUAGE);
+        EditTextPreference postFeedMaxResolution = findPreference(SharedPreferencesUtils.POST_FEED_MAX_RESOLUTION);
 
         if (mainPageBackButtonActionListPreference != null) {
             mainPageBackButtonActionListPreference.setOnPreferenceChangeListener((preference, newValue) -> {
@@ -65,5 +69,22 @@ public class MiscellaneousPreferenceFragment extends CustomFontPreferenceFragmen
                 return true;
             });
         }
+
+        if (postFeedMaxResolution != null) {
+            postFeedMaxResolution.setOnPreferenceChangeListener((preference, newValue) -> {
+                try {
+                    int resolution = Integer.parseInt((String) newValue);
+                    if (resolution <= 0) {
+                        Toast.makeText(activity, R.string.not_a_valid_number, Toast.LENGTH_SHORT).show();
+                        return false;
+                    }
+                    EventBus.getDefault().post(new ChangePostFeedMaxResolutionEvent(resolution));
+                } catch (NumberFormatException e) {
+                    Toast.makeText(activity, R.string.not_a_valid_number, Toast.LENGTH_SHORT).show();
+                    return false;
+                }
+                return true;
+            });
+        }
     }
 }

app/src/main/java/ml/docilealligator/infinityforreddit/utils/SharedPreferencesUtils.java

@@ -208,6 +208,7 @@ public class SharedPreferencesUtils {
     public static final String SHOW_AUTHOR_AVATAR = "show_author_avatar";
     public static final String ALWAYS_SHOW_CHILD_COMMENT_COUNT = "always_show_child_comment_count";
     public static final String HIDE_UPVOTE_RATIO = "hide_upvote_ratio";
+    public static final String POST_FEED_MAX_RESOLUTION = "post_feed_max_resolution";
 
     public static final String DEFAULT_PREFERENCES_FILE = "ml.docilealligator.infinityforreddit_preferences";
     public static final String MAIN_PAGE_TABS_SHARED_PREFERENCES_FILE = "ml.docilealligator.infinityforreddit.main_page_tabs";

app/src/main/res/values/strings.xml

@@ -637,6 +637,9 @@
     <string name="settings_reddit_user_agreement_title">Reddit User Agreement</string>
     <string name="settings_always_show_child_comment_count_title">Always Show the Number of Child Comments</string>
     <string name="settings_hide_upvote_ratio_title">Hide Upvote Ratio</string>
+    <string name="settings_miscellaneous_dangerous_group_title">Dangerous</string>
+    <string name="settings_post_feed_max_resolution_warning_title">Increase the value to show previews in higher resolution, but the app may crash unexpectedly.</string>
+    <string name="settings_post_feed_max_resolution_title">Post Feed Preview Max Resolution (Width * Height)</string>
 
     <string name="no_link_available">Cannot get the link</string>
 
@@ -1283,4 +1286,6 @@
     <string name="option_5_hint">Option 5</string>
     <string name="option_6_hint">Option 6</string>
 
+    <string name="not_a_valid_number">Not a valid number</string>
+
 </resources>

app/src/main/res/xml/miscellaneous_preferences.xml

@@ -40,4 +40,18 @@
         app:title="@string/settings_language_title"
         app:useSimpleSummaryProvider="true" />
 
+    <ml.docilealligator.infinityforreddit.customviews.CustomFontPreferenceCategory
+        app:title="@string/settings_miscellaneous_dangerous_group_title" />
+
+    <ml.docilealligator.infinityforreddit.customviews.CustomFontPreference
+        app:icon="@drawable/ic_info_preference_24dp"
+        app:summary="@string/settings_post_feed_max_resolution_warning_title"
+        app:enabled="false" />
+
+    <ml.docilealligator.infinityforreddit.customviews.CustomFontEditTextPreference
+        app:defaultValue="5000000"
+        app:key="post_feed_max_resolution"
+        app:title="@string/settings_post_feed_max_resolution_title"
+        app:useSimpleSummaryProvider="true" />
+
 </PreferenceScreen>