Add options to change the number of columns in PostFragment portrait and landscape modes. Upgrade compileSdkVersion and targetSdkVersion to 30.

app/build.gradle

@@ -1,11 +1,11 @@
 apply plugin: 'com.android.application'
 
 android {
-    compileSdkVersion 29
+    compileSdkVersion 30
     defaultConfig {
         applicationId "ml.docilealligator.infinityforreddit"
         minSdkVersion 21
-        targetSdkVersion 29
+        targetSdkVersion 30
         versionCode 39
         versionName "4.0.3"
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"

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

@@ -260,7 +260,14 @@ public class PostFragment extends Fragment implements FragmentCommunicator {
         activity.getWindowManager().getDefaultDisplay().getMetrics(displayMetrics);
         int windowWidth = displayMetrics.widthPixels;
 
-        if (resources.getConfiguration().orientation == Configuration.ORIENTATION_PORTRAIT && !resources.getBoolean(R.bool.isTablet)) {
+        int nColumns;
+        if (resources.getConfiguration().orientation == Configuration.ORIENTATION_PORTRAIT) {
+            nColumns = Integer.parseInt(mSharedPreferences.getString(SharedPreferencesUtils.NUMBER_OF_COLUMNS_IN_POST_FEED_PORTRAIT, "1"));
+        } else {
+            nColumns = Integer.parseInt(mSharedPreferences.getString(SharedPreferencesUtils.NUMBER_OF_COLUMNS_IN_POST_FEED_LANDSCAPE, "1"));
+        }
+
+        if (nColumns == 1) {
             mLinearLayoutManager = new LinearLayoutManager(activity);
             mPostRecyclerView.setLayoutManager(mLinearLayoutManager);
         } else {

app/src/main/java/ml/docilealligator/infinityforreddit/Settings/NumberOfColumnsInPostFeedPreferenceFragment.java

@@ -0,0 +1,14 @@
+package ml.docilealligator.infinityforreddit.Settings;
+
+import android.os.Bundle;
+
+import androidx.preference.PreferenceFragmentCompat;
+
+import ml.docilealligator.infinityforreddit.R;
+
+public class NumberOfColumnsInPostFeedPreferenceFragment extends PreferenceFragmentCompat {
+    @Override
+    public void onCreatePreferences(Bundle savedInstanceState, String rootKey) {
+        setPreferencesFromResource(R.xml.number_of_columns_in_post_feed_preferences, rootKey);
+    }
+}

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

@@ -80,6 +80,8 @@ public class SharedPreferencesUtils {
     public static final String DEFAULT_POST_LAYOUT_KEY = "default_post_layout";
     public static final String SHOW_DIVIDER_IN_COMPACT_LAYOUT = "show_divider_in_compact_layout";
     public static final String SHOW_THUMBNAIL_ON_THE_LEFT_IN_COMPACT_LAYOUT = "show_thumbnail_on_the_left_in_compact_layout";
+    public static final String NUMBER_OF_COLUMNS_IN_POST_FEED_PORTRAIT = "number_of_columns_in_post_feed_portrait";
+    public static final String NUMBER_OF_COLUMNS_IN_POST_FEED_LANDSCAPE = "number_of_columns_in_post_feed_landscape";
     public static final String SWIPE_RIGHT_TO_GO_BACK = "swipe_to_go_back_from_post_detail";
     public static final String VOLUME_KEYS_NAVIGATE_COMMENTS = "volume_keys_navigate_comments";
     public static final String VOLUME_KEYS_NAVIGATE_POSTS = "volume_keys_navigate_posts";

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

@@ -228,4 +228,9 @@
         <item>yyyy.M.d HH:mm</item>
         <item>yyyy.M.d hh:mm a</item>
     </string-array>
+    
+    <string-array name="settings_number_of_columns_in_post_feed">
+        <item>1</item>
+        <item>2</item>
+    </string-array>
 </resources>

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

@@ -387,6 +387,9 @@
     <string name="settings_default_post_layout">Default Post Layout</string>
     <string name="settings_show_divider_in_compact_layout">Show Divider in Compact Layout</string>
     <string name="settings_show_thumbnail_on_the_left_in_compact_layout">Show Thumbnail on the Left in Compact Layout</string>
+    <string name="settings_number_of_columns_in_post_feed_title">The Number of Columns in Post Feed</string>
+    <string name="settings_number_of_columns_in_post_feed_portrait_title">Portrait</string>
+    <string name="settings_number_of_columns_in_post_feed_landscape_title">Landscape</string>
     <string name="settings_swap_tap_and_long_title">Swap Tap and Long Press in Comments</string>
     <string name="settings_swipe_to_go_back_title">Swipe Right to Go Back</string>
     <string name="settings_swipe_to_go_back_summary">Does Not Apply to All Pages</string>

app/src/main/res/xml-sw600dp/number_of_columns_in_post_feed_preferences.xml

@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="utf-8"?>
+<PreferenceScreen xmlns:app="http://schemas.android.com/apk/res-auto">
+    <ListPreference
+        app:defaultValue="2"
+        app:entries="@array/settings_number_of_columns_in_post_feed"
+        app:entryValues="@array/settings_number_of_columns_in_post_feed"
+        app:key="number_of_columns_in_post_feed_portrait"
+        app:title="@string/settings_number_of_columns_in_post_feed_portrait_title"
+        app:useSimpleSummaryProvider="true" />
+
+    <ListPreference
+        app:defaultValue="2"
+        app:entries="@array/settings_number_of_columns_in_post_feed"
+        app:entryValues="@array/settings_number_of_columns_in_post_feed"
+        app:key="number_of_columns_in_post_feed_landscape"
+        app:title="@string/settings_number_of_columns_in_post_feed_landscape_title"
+        app:useSimpleSummaryProvider="true" />
+</PreferenceScreen>

app/src/main/res/xml/interface_preference.xml

@@ -62,6 +62,10 @@
         app:key="show_thumbnail_on_the_left_in_compact_layout"
         app:title="@string/settings_show_thumbnail_on_the_left_in_compact_layout" />
 
+    <Preference
+        app:title="@string/settings_number_of_columns_in_post_feed_title"
+        app:fragment="ml.docilealligator.infinityforreddit.Settings.NumberOfColumnsInPostFeedPreferenceFragment" />
+
     <PreferenceCategory
         app:title="@string/settings_category_comment_title" />
 

app/src/main/res/xml/number_of_columns_in_post_feed_preferences.xml

@@ -0,0 +1,24 @@
+<?xml version="1.0" encoding="utf-8"?>
+<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto">
+    <Preference
+        android:icon="@drawable/ic_info_preference_24dp"
+        app:summary="@string/settings_tab_info"
+        app:enabled="false" />
+
+    <ListPreference
+        app:defaultValue="1"
+        app:entries="@array/settings_number_of_columns_in_post_feed"
+        app:entryValues="@array/settings_number_of_columns_in_post_feed"
+        app:key="number_of_columns_in_post_feed_portrait"
+        app:title="@string/settings_number_of_columns_in_post_feed_portrait_title"
+        app:useSimpleSummaryProvider="true" />
+
+    <ListPreference
+        app:defaultValue="2"
+        app:entries="@array/settings_number_of_columns_in_post_feed"
+        app:entryValues="@array/settings_number_of_columns_in_post_feed"
+        app:key="number_of_columns_in_post_feed_landscape"
+        app:title="@string/settings_number_of_columns_in_post_feed_landscape_title"
+        app:useSimpleSummaryProvider="true" />
+</PreferenceScreen>