Save light, dark and amoled Material You themes to database. Add 'Apply Material You' option. Test MotionLayout.

app/build.gradle

@@ -46,7 +46,7 @@ dependencies {
     implementation 'androidx.biometric:biometric:1.2.0-alpha03'
     implementation 'androidx.browser:browser:1.3.0'
     implementation 'androidx.cardview:cardview:1.0.0'
-    implementation 'androidx.constraintlayout:constraintlayout:2.0.4'
+    implementation 'androidx.constraintlayout:constraintlayout:2.1.0-beta02'
     implementation 'androidx.legacy:legacy-support-v4:1.0.0'
     def lifecycleVersion = "2.2.0"
     implementation "androidx.lifecycle:lifecycle-livedata:$lifecycleVersion"

app/src/main/AndroidManifest.xml

@@ -32,6 +32,8 @@
         android:theme="@style/AppTheme"
         android:usesCleartextTraffic="true"
         tools:replace="android:label">
+        <activity android:name=".activities.MotionTestActivity"
+            android:theme="@style/AppTheme.NoActionBar" />
         <activity
             android:name=".activities.LockScreenActivity"
             android:theme="@style/AppTheme.NoActionBar" />
@@ -430,7 +432,6 @@
             android:name=".services.SubmitPostService"
             android:enabled="true"
             android:exported="false" />
-
         <service
             android:name=".services.MaterialYouService"
             android:exported="false" />

app/src/main/java/ml/docilealligator/infinityforreddit/activities/MotionTestActivity.java

@@ -0,0 +1,41 @@
+package ml.docilealligator.infinityforreddit.activities;
+
+import android.os.Bundle;
+import android.util.Log;
+
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.constraintlayout.motion.widget.MotionLayout;
+
+import ml.docilealligator.infinityforreddit.R;
+
+public class MotionTestActivity extends AppCompatActivity {
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_motion_test);
+
+        MotionLayout motionLayout = findViewById(R.id.motion_layout);
+        motionLayout.addTransitionListener(new MotionLayout.TransitionListener() {
+            @Override
+            public void onTransitionStarted(MotionLayout motionLayout, int i, int i1) {
+                Log.i("asdfasdf", "start " + (i == R.id.start) + " " + (i1 == R.id.end));
+            }
+
+            @Override
+            public void onTransitionChange(MotionLayout motionLayout, int i, int i1, float v) {
+                Log.i("asdfasdf", "start " + (i == R.id.start) + " " + (i1 == R.id.end) + " " + v);
+            }
+
+            @Override
+            public void onTransitionCompleted(MotionLayout motionLayout, int i) {
+                Log.i("asdfasdf", "complete " + (i == R.id.start));
+            }
+
+            @Override
+            public void onTransitionTrigger(MotionLayout motionLayout, int i, boolean b, float v) {
+                Log.i("asdfasdf", "trigger " + (i == R.id.start) + " " + v + " " + b);
+            }
+        });
+    }
+}

app/src/main/java/ml/docilealligator/infinityforreddit/broadcastreceivers/WallpaperChangeReceiver.java

@@ -3,13 +3,24 @@ package ml.docilealligator.infinityforreddit.broadcastreceivers;
 import android.content.BroadcastReceiver;
 import android.content.Context;
 import android.content.Intent;
+import android.content.SharedPreferences;
+
+import javax.inject.Inject;
+import javax.inject.Named;
 
 import ml.docilealligator.infinityforreddit.services.MaterialYouService;
+import ml.docilealligator.infinityforreddit.utils.SharedPreferencesUtils;
 
 public class WallpaperChangeReceiver extends BroadcastReceiver {
+    @Inject
+    @Named("default")
+    SharedPreferences mSharedPreferences;
+
     @Override
     public void onReceive(Context context, Intent intent) {
-        Intent materialYouIntent = new Intent(context, MaterialYouService.class);
+        if (mSharedPreferences.getBoolean(SharedPreferencesUtils.ENABLE_MATERIAL_YOU, false)) {
-        context.startService(materialYouIntent);
+            Intent materialYouIntent = new Intent(context, MaterialYouService.class);
+            context.startService(materialYouIntent);
+        }
     }
 }

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

@@ -0,0 +1,39 @@
+package ml.docilealligator.infinityforreddit.customviews;
+
+import android.content.Context;
+import android.util.AttributeSet;
+import android.view.MotionEvent;
+import android.view.ViewConfiguration;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.constraintlayout.motion.widget.MotionLayout;
+
+public class ClickableMotionLayout extends MotionLayout {
+    private long mStartTime = 0;
+
+    public ClickableMotionLayout(@NonNull Context context) {
+        super(context);
+    }
+
+    public ClickableMotionLayout(@NonNull Context context, @Nullable AttributeSet attrs) {
+        super(context, attrs);
+    }
+
+    public ClickableMotionLayout(@NonNull Context context, @Nullable AttributeSet attrs, int defStyleAttr) {
+        super(context, attrs, defStyleAttr);
+    }
+
+    @Override
+    public boolean onInterceptTouchEvent(MotionEvent event) {
+        if ( event.getAction() == MotionEvent.ACTION_DOWN ) {
+            mStartTime = event.getEventTime();
+        } else if ( event.getAction() == MotionEvent.ACTION_UP ) {
+            if ( event.getEventTime() - mStartTime <= ViewConfiguration.getTapTimeout() ) {
+                return false;
+            }
+        }
+
+        return super.onInterceptTouchEvent(event);
+    }
+}

app/src/main/java/ml/docilealligator/infinityforreddit/services/MaterialYouService.java

@@ -40,7 +40,8 @@ public class MaterialYouService extends IntentService {
     @Override
     protected void onHandleIntent(Intent intent) {
         ((Infinity) getApplication()).getAppComponent().inject(this);
-        MaterialYouUtils.changeTheme(this, executor, new Handler(), customThemeWrapper,
+        MaterialYouUtils.changeTheme(this, executor, new Handler(), redditDataRoomDatabase,
-                lightThemeSharedPreferences, darkThemeSharedPreferences, amoledThemeSharedPreferences);
+                customThemeWrapper, lightThemeSharedPreferences, darkThemeSharedPreferences,
+                amoledThemeSharedPreferences);
     }
 }

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

@@ -50,6 +50,9 @@ public class ThemePreferenceFragment extends PreferenceFragmentCompat {
 
     private AppCompatActivity activity;
     @Inject
+    @Named("default")
+    SharedPreferences sharedPreferences;
+    @Inject
     @Named("light_theme")
     SharedPreferences lightThemeSharedPreferences;
     @Inject
@@ -79,6 +82,7 @@ public class ThemePreferenceFragment extends PreferenceFragmentCompat {
         Preference customizeAmoledThemePreference = findPreference(SharedPreferencesUtils.CUSTOMIZE_AMOLED_THEME);
         Preference selectAndCustomizeThemePreference = findPreference(SharedPreferencesUtils.MANAGE_THEMES);
         SwitchPreference enableMaterialYouSwitchPreference = findPreference(SharedPreferencesUtils.ENABLE_MATERIAL_YOU);
+        Preference applyMaterialYouPreference = findPreference(SharedPreferencesUtils.APPLY_MATERIAL_YOU);
 
         boolean systemDefault = Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q;
         if (themePreference != null && amoledDarkSwitch != null) {
@@ -169,15 +173,33 @@ public class ThemePreferenceFragment extends PreferenceFragmentCompat {
             });
         }
 
-        if (enableMaterialYouSwitchPreference != null) {
+        if (enableMaterialYouSwitchPreference != null && applyMaterialYouPreference != null) {
-            Handler handler = new Handler();
+            applyMaterialYouPreference.setVisible(
+                    sharedPreferences.getBoolean(SharedPreferencesUtils.ENABLE_MATERIAL_YOU, false));
+
             enableMaterialYouSwitchPreference.setOnPreferenceChangeListener((preference, newValue) -> {
-                if (true) {
+                if ((Boolean) newValue) {
-                    MaterialYouUtils.changeTheme(activity, executor, new Handler(), customThemeWrapper,
+                    MaterialYouUtils.changeTheme(activity, executor, new Handler(),
-                            lightThemeSharedPreferences, darkThemeSharedPreferences, amoledThemeSharedPreferences);
+                            redditDataRoomDatabase, customThemeWrapper,
+                            lightThemeSharedPreferences, darkThemeSharedPreferences,
+                            amoledThemeSharedPreferences);
+                    applyMaterialYouPreference.setVisible(true);
+                } else {
+                    applyMaterialYouPreference.setVisible(false);
                 }
                 return true;
             });
+
+            applyMaterialYouPreference.setOnPreferenceChangeListener(new Preference.OnPreferenceChangeListener() {
+                @Override
+                public boolean onPreferenceChange(Preference preference, Object newValue) {
+                    MaterialYouUtils.changeTheme(activity, executor, new Handler(),
+                            redditDataRoomDatabase, customThemeWrapper,
+                            lightThemeSharedPreferences, darkThemeSharedPreferences,
+                            amoledThemeSharedPreferences);
+                    return true;
+                }
+            });
         }
 
         customThemeViewModel = new ViewModelProvider(this,

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

@@ -14,11 +14,33 @@ import org.greenrobot.eventbus.EventBus;
 
 import java.util.concurrent.Executor;
 
+import ml.docilealligator.infinityforreddit.RedditDataRoomDatabase;
+import ml.docilealligator.infinityforreddit.customtheme.CustomTheme;
 import ml.docilealligator.infinityforreddit.customtheme.CustomThemeWrapper;
 import ml.docilealligator.infinityforreddit.events.RecreateActivityEvent;
 
 public class MaterialYouUtils {
+    public interface CheckThemeNameListener {
+        void themeNotExists();
+        void themeExists();
+    }
+
+    public static void checkThemeName(Executor executor, Handler handler,
+                                      RedditDataRoomDatabase redditDataRoomDatabase,
+                                      CheckThemeNameListener checkThemeNameListener) {
+        executor.execute(() -> {
+            if (redditDataRoomDatabase.customThemeDao().getCustomTheme("Material You") != null
+                    || redditDataRoomDatabase.customThemeDao().getCustomTheme("Material You Dark") != null
+                    || redditDataRoomDatabase.customThemeDao().getCustomTheme("Material You Amoled") != null) {
+                handler.post(checkThemeNameListener::themeExists);
+            } else {
+                handler.post(checkThemeNameListener::themeNotExists);
+            }
+        });
+    }
+
     public static void changeTheme(Context context, Executor executor, Handler handler,
+                                   RedditDataRoomDatabase redditDataRoomDatabase,
                                    CustomThemeWrapper customThemeWrapper,
                                    SharedPreferences lightThemeSharedPreferences,
                                    SharedPreferences darkThemeSharedPreferences,
@@ -29,6 +51,10 @@ public class MaterialYouUtils {
                 WallpaperColors wallpaperColors = wallpaperManager.getWallpaperColors(WallpaperManager.FLAG_SYSTEM);
 
                 if (wallpaperColors != null) {
+                    CustomTheme lightTheme = CustomThemeWrapper.getIndigo(context);
+                    CustomTheme darkTheme = CustomThemeWrapper.getIndigoDark(context);
+                    CustomTheme amoledTheme = CustomThemeWrapper.getIndigoAmoled(context);
+
                     int colorPrimaryInt = shiftColorTo255(wallpaperColors.getPrimaryColor().toArgb(), 0.4);
                     int colorPrimaryDarkInt = shiftColorTo0(colorPrimaryInt, 0.3);
                     int backgroundColor = shiftColorTo255(colorPrimaryInt, 0.6);
@@ -39,39 +65,51 @@ public class MaterialYouUtils {
                     int colorPrimaryAppropriateTextColor = getAppropriateTextColor(colorPrimaryInt);
                     int backgroundColorAppropriateTextColor = getAppropriateTextColor(backgroundColor);
 
-                    lightThemeSharedPreferences.edit().putInt(CustomThemeSharedPreferencesUtils.COLOR_PRIMARY, colorPrimaryInt)
+                    lightTheme.colorPrimary = colorPrimaryInt;
-                            .putInt(CustomThemeSharedPreferencesUtils.COLOR_PRIMARY_DARK, colorPrimaryDarkInt)
+                    lightTheme.colorPrimaryDark = colorPrimaryDarkInt;
-                            .putInt(CustomThemeSharedPreferencesUtils.COLOR_ACCENT, colorAccentInt)
+                    lightTheme.colorAccent = colorAccentInt;
-                            .putInt(CustomThemeSharedPreferencesUtils.COLOR_PRIMARY_LIGHT_THEME, colorPrimaryInt)
+                    lightTheme.colorPrimaryLightTheme = colorPrimaryInt;
-                            .putInt(CustomThemeSharedPreferencesUtils.BACKGROUND_COLOR, backgroundColor)
+                    lightTheme.backgroundColor = backgroundColor;
-                            .putInt(CustomThemeSharedPreferencesUtils.CARD_VIEW_BACKGROUND_COLOR, cardViewBackgroundColor)
+                    lightTheme.cardViewBackgroundColor = cardViewBackgroundColor;
-                            .putInt(CustomThemeSharedPreferencesUtils.COMMENT_BACKGROUND_COLOR, cardViewBackgroundColor)
+                    lightTheme.commentBackgroundColor = cardViewBackgroundColor;
-                            .putInt(CustomThemeSharedPreferencesUtils.AWARDED_COMMENT_BACKGROUND_COLOR, cardViewBackgroundColor)
+                    lightTheme.awardedCommentBackgroundColor = cardViewBackgroundColor;
-                            .putInt(CustomThemeSharedPreferencesUtils.BOTTOM_APP_BAR_BACKGROUND_COLOR, colorPrimaryInt)
+                    lightTheme.bottomAppBarBackgroundColor = colorPrimaryInt;
-                            .putInt(CustomThemeSharedPreferencesUtils.NAV_BAR_COLOR, colorPrimaryInt)
+                    lightTheme.navBarColor = colorPrimaryInt;
-                            .putInt(CustomThemeSharedPreferencesUtils.PRIMARY_TEXT_COLOR, backgroundColorAppropriateTextColor)
+                    lightTheme.primaryTextColor = backgroundColorAppropriateTextColor;
-                            .putInt(CustomThemeSharedPreferencesUtils.BOTTOM_APP_BAR_ICON_COLOR, colorPrimaryAppropriateTextColor)
+                    lightTheme.bottomAppBarIconColor = colorPrimaryAppropriateTextColor;
-                            .putInt(CustomThemeSharedPreferencesUtils.PRIMARY_ICON_COLOR, backgroundColorAppropriateTextColor)
+                    lightTheme.primaryIconColor = backgroundColorAppropriateTextColor;
-                            .putInt(CustomThemeSharedPreferencesUtils.FAB_ICON_COLOR, colorPrimaryAppropriateTextColor)
+                    lightTheme.fabIconColor = colorPrimaryAppropriateTextColor;
-                            .putInt(CustomThemeSharedPreferencesUtils.TOOLBAR_PRIMARY_TEXT_AND_ICON_COLOR, colorPrimaryAppropriateTextColor)
+                    lightTheme.toolbarPrimaryTextAndIconColor = colorPrimaryAppropriateTextColor;
-                            .putInt(CustomThemeSharedPreferencesUtils.TOOLBAR_SECONDARY_TEXT_COLOR, colorPrimaryAppropriateTextColor)
+                    lightTheme.toolbarSecondaryTextColor = colorPrimaryAppropriateTextColor;
-                            .putInt(CustomThemeSharedPreferencesUtils.TAB_LAYOUT_WITH_COLLAPSED_COLLAPSING_TOOLBAR_TAB_INDICATOR, colorPrimaryAppropriateTextColor)
+                    lightTheme.tabLayoutWithCollapsedCollapsingToolbarTabIndicator = colorPrimaryAppropriateTextColor;
-                            .putInt(CustomThemeSharedPreferencesUtils.TAB_LAYOUT_WITH_COLLAPSED_COLLAPSING_TOOLBAR_TEXT_COLOR, colorPrimaryAppropriateTextColor)
+                    lightTheme.tabLayoutWithCollapsedCollapsingToolbarTextColor = colorPrimaryAppropriateTextColor;
-                            .putInt(CustomThemeSharedPreferencesUtils.TAB_LAYOUT_WITH_COLLAPSED_COLLAPSING_TOOLBAR_TAB_BACKGROUND, colorPrimaryInt)
+                    lightTheme.tabLayoutWithCollapsedCollapsingToolbarTabBackground = colorPrimaryInt;
-                            .putInt(CustomThemeSharedPreferencesUtils.TAB_LAYOUT_WITH_EXPANDED_COLLAPSING_TOOLBAR_TAB_BACKGROUND, colorPrimaryInt)
+                    lightTheme.tabLayoutWithExpandedCollapsingToolbarTabBackground = colorPrimaryInt;
-                            .putInt(CustomThemeSharedPreferencesUtils.TAB_LAYOUT_WITH_EXPANDED_COLLAPSING_TOOLBAR_TAB_INDICATOR, colorPrimaryAppropriateTextColor)
+                    lightTheme.tabLayoutWithExpandedCollapsingToolbarTabIndicator = colorPrimaryAppropriateTextColor;
-                            .putInt(CustomThemeSharedPreferencesUtils.TAB_LAYOUT_WITH_EXPANDED_COLLAPSING_TOOLBAR_TEXT_COLOR, colorPrimaryAppropriateTextColor)
+                    lightTheme.tabLayoutWithExpandedCollapsingToolbarTextColor = colorPrimaryAppropriateTextColor;
-                            .putInt(CustomThemeSharedPreferencesUtils.CIRCULAR_PROGRESS_BAR_BACKGROUND, colorPrimaryInt)
+                    lightTheme.circularProgressBarBackground = colorPrimaryInt;
-                            .putBoolean(CustomThemeSharedPreferencesUtils.LIGHT_STATUS_BAR, getAppropriateTextColor(colorPrimaryInt) == Color.toArgb(Color.BLACK))
+                    lightTheme.isLightStatusBar = getAppropriateTextColor(colorPrimaryInt) == Color.toArgb(Color.BLACK);
-                            .apply();
+                    lightTheme.name = "Material You";
-                    darkThemeSharedPreferences.edit()
+
-                            .putInt(CustomThemeSharedPreferencesUtils.COLOR_ACCENT, colorPrimaryInt)
+                    darkTheme.colorAccent = colorPrimaryInt;
-                            .putInt(CustomThemeSharedPreferencesUtils.COLOR_PRIMARY_LIGHT_THEME, colorPrimaryInt)
+                    darkTheme.colorPrimaryLightTheme = colorPrimaryInt;
-                            .apply();
+                    darkTheme.name = "Material You Dark";
-                    amoledThemeSharedPreferences.edit()
+
-                            .putInt(CustomThemeSharedPreferencesUtils.COLOR_ACCENT, colorPrimaryInt)
+                    amoledTheme.colorAccent = colorPrimaryInt;
-                            .putInt(CustomThemeSharedPreferencesUtils.COLOR_PRIMARY_LIGHT_THEME, colorPrimaryInt)
+                    amoledTheme.colorPrimaryLightTheme = colorPrimaryInt;
-                            .apply();
+                    amoledTheme.name = "Material You Amoled";
+
+                    redditDataRoomDatabase.customThemeDao().unsetLightTheme();
+                    redditDataRoomDatabase.customThemeDao().unsetDarkTheme();
+                    redditDataRoomDatabase.customThemeDao().unsetAmoledTheme();
+                    
+                    redditDataRoomDatabase.customThemeDao().insert(lightTheme);
+                    redditDataRoomDatabase.customThemeDao().insert(darkTheme);
+                    redditDataRoomDatabase.customThemeDao().insert(amoledTheme);
+
+                    CustomThemeSharedPreferencesUtils.insertThemeToSharedPreferences(lightTheme, lightThemeSharedPreferences);
+                    CustomThemeSharedPreferencesUtils.insertThemeToSharedPreferences(darkTheme, darkThemeSharedPreferences);
+                    CustomThemeSharedPreferencesUtils.insertThemeToSharedPreferences(amoledTheme, amoledThemeSharedPreferences);
 
                     handler.post(() -> EventBus.getDefault().post(new RecreateActivityEvent()));
                 }

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

@@ -181,6 +181,7 @@ public class SharedPreferencesUtils {
     public static final String DISABLE_NSFW_FOREVER = "disable_nsfw_forever";
     public static final String SHOW_ONLY_ONE_COMMENT_LEVEL_INDICATOR = "show_only_one_comment_level_indicator";
     public static final String ENABLE_MATERIAL_YOU = "enable_material_you";
+    public static final String APPLY_MATERIAL_YOU = "apply_material_you";
 
     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/layout/activity_motion_test.xml

@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="utf-8"?>
+<ml.docilealligator.infinityforreddit.customviews.ClickableMotionLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:id="@+id/motion_layout"
+    tools:context=".activities.MotionTestActivity"
+    app:layoutDescription="@xml/activity_motion_test_scene">
+
+    <View
+        android:id="@+id/button"
+        android:background="@color/colorAccent"
+        android:layout_width="64dp"
+        android:layout_height="64dp" />
+
+</ml.docilealligator.infinityforreddit.customviews.ClickableMotionLayout>

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

@@ -458,8 +458,11 @@
     <string name="settings_customize_amoled_theme_title">Amoled Theme</string>
     <string name="settings_manage_themes_title">Manage Themes</string>
     <string name="settings_category_material_you_title">Material You</string>
+    <string name="settings_enable_material_you_warning_summary">Make sure you don\'t have themes named\n\"Material You\",\n\"Material You Dark\" or\n\"Material You Amoled\".\nOtherwise, rename them before enabling Material You.</string>
     <string name="settings_enable_material_you_title">Enable Material You</string>
     <string name="settings_enable_material_you_summary">Personalize Infinity based on Your Wallpaper</string>
+    <string name="settings_apply_material_you_title">Apply Material You</string>
+    <string name="settings_apply_material_you_summary">In case Infinity did not change the theme</string>
     <string name="settings_custom_theme_cannot_apply_to_settings_page_summary">Custom themes cannot be applied to settings page (except toolbar, status bar and navigation bar).</string>
     <string name="settings_advanced_master_title">Advanced</string>
     <string name="settings_delete_all_subreddits_data_in_database_title">Delete All Subreddits in Database</string>

app/src/main/res/xml/activity_motion_test_scene.xml

@@ -0,0 +1,45 @@
+<?xml version="1.0" encoding="utf-8"?>
+<MotionScene xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:motion="http://schemas.android.com/apk/res-auto">
+
+    <Transition
+        android:id="@+id/transition_to_end"
+        motion:constraintSetStart="@+id/start"
+        motion:constraintSetEnd="@+id/end"
+        motion:autoTransition="animateToStart"
+        motion:duration="100">
+        <OnSwipe
+            motion:touchAnchorId="@+id/button"
+            motion:touchAnchorSide="right"
+            motion:onTouchUp="autoCompleteToEnd"
+            motion:dragDirection="dragRight" />
+    </Transition>
+
+    <Transition
+        android:id="@+id/transition_to_start"
+        motion:constraintSetStart="@+id/end"
+        motion:constraintSetEnd="@+id/start"
+        motion:autoTransition="animateToEnd">
+    </Transition>
+
+    <ConstraintSet android:id="@+id/start">
+        <Constraint
+            android:id="@+id/button"
+            android:layout_width="64dp"
+            android:layout_height="64dp"
+            motion:layout_constraintBottom_toBottomOf="parent"
+            motion:layout_constraintStart_toStartOf="parent"
+            motion:layout_constraintTop_toTopOf="parent" />
+    </ConstraintSet>
+
+    <ConstraintSet android:id="@+id/end">
+        <Constraint
+            android:id="@+id/button"
+            android:layout_width="64dp"
+            android:layout_height="64dp"
+            motion:layout_constraintBottom_toBottomOf="parent"
+            motion:layout_constraintStart_toEndOf="parent"
+            motion:layout_constraintTop_toTopOf="parent"/>
+    </ConstraintSet>
+
+</MotionScene>

app/src/main/res/xml/item_post_with_preview_scene.xml

@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="utf-8"?>
+<MotionScene xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto">
+
+    <ConstraintSet android:id="@+id/start">
+        <Constraint android:id="@+id/material_card_view_item_post_with_preview" />
+    </ConstraintSet>
+
+    <ConstraintSet android:id="@+id/end">
+        <Constraint android:id="@id/material_card_view_item_post_with_preview"
+            android:layout_width="0dp"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintWidth_percent="0.7" />
+    </ConstraintSet>
+
+    <Transition
+        app:constraintSetEnd="@id/end"
+        app:constraintSetStart="@+id/start">
+
+        <OnSwipe
+            app:dragDirection="dragRight"
+            app:touchAnchorId="@id/material_card_view_item_post_with_preview"
+            app:touchAnchorSide="right" />
+
+    </Transition>
+</MotionScene>

app/src/main/res/xml/theme_preferences.xml

@@ -12,6 +12,7 @@
     <SwitchPreference
         app:defaultValue="false"
         app:key="amoled_dark"
+        app:icon="@drawable/ic_amoled_theme_preference_24dp"
         app:title="@string/settings_amoled_dark_title" />
 
     <PreferenceCategory
@@ -40,9 +41,19 @@
         app:icon="@drawable/ic_edit_24dp"
         app:title="@string/settings_manage_themes_title" />
 
+    <Preference
+        app:icon="@drawable/ic_info_preference_24dp"
+        app:summary="@string/settings_custom_theme_cannot_apply_to_settings_page_summary"
+        app:enabled="false" />
+
     <PreferenceCategory
         app:title="@string/settings_category_material_you_title" />
 
+    <Preference
+        app:icon="@drawable/ic_info_preference_24dp"
+        app:summary="@string/settings_enable_material_you_warning_summary"
+        app:enabled="false" />
+
     <SwitchPreference
         app:defaultValue="false"
         app:key="enable_material_you"
@@ -50,8 +61,8 @@
         app:summary="@string/settings_enable_material_you_summary" />
 
     <Preference
-        app:icon="@drawable/ic_info_preference_24dp"
+        app:key="apply_material_you"
-        app:summary="@string/settings_custom_theme_cannot_apply_to_settings_page_summary"
+        app:title="@string/settings_apply_material_you_title"
-        app:enabled="false" />
+        app:summary="@string/settings_apply_material_you_summary" />
 
 </PreferenceScreen>