diff --git a/app/debug/app-debug.aab b/app/debug/app-debug.aab
deleted file mode 100644
index 9fa93a20..00000000
Binary files a/app/debug/app-debug.aab and /dev/null differ
diff --git a/app/src/main/java/com/huanchengfly/tieba/post/adapters/PersonalizedFeedAdapter.java b/app/src/main/java/com/huanchengfly/tieba/post/adapters/PersonalizedFeedAdapter.java
index dea2a93c..deacfc2d 100644
--- a/app/src/main/java/com/huanchengfly/tieba/post/adapters/PersonalizedFeedAdapter.java
+++ b/app/src/main/java/com/huanchengfly/tieba/post/adapters/PersonalizedFeedAdapter.java
@@ -71,7 +71,7 @@ public class PersonalizedFeedAdapter extends MultiBaseAdapter<PersonalizedBean.T
 
     private int getMaxWidth() {
         int maxWidth = BaseApplication.ScreenInfo.EXACT_SCREEN_WIDTH - DisplayUtil.dp2px(mContext, 56);
-        if (mContext.getResources().getBoolean(R.bool.is_tablet)) {
+        if (ExtensionsKt.isTablet(mContext)) {
             if (ExtensionsKt.isLandscape(mContext.getResources().getConfiguration())) {
                 return maxWidth / 3;
             } else {
diff --git a/app/src/main/java/com/huanchengfly/tieba/post/adapters/forum/NewForumAdapter.java b/app/src/main/java/com/huanchengfly/tieba/post/adapters/forum/NewForumAdapter.java
index 85b7809f..eead5079 100644
--- a/app/src/main/java/com/huanchengfly/tieba/post/adapters/forum/NewForumAdapter.java
+++ b/app/src/main/java/com/huanchengfly/tieba/post/adapters/forum/NewForumAdapter.java
@@ -20,6 +20,7 @@ import com.alibaba.android.vlayout.layout.LinearLayoutHelper;
 import com.alibaba.android.vlayout.layout.StaggeredGridLayoutHelper;
 import com.bumptech.glide.Glide;
 import com.huanchengfly.tieba.post.BaseApplication;
+import com.huanchengfly.tieba.post.ExtensionsKt;
 import com.huanchengfly.tieba.post.R;
 import com.huanchengfly.tieba.post.activities.ThreadActivity;
 import com.huanchengfly.tieba.post.adapters.base.BaseMultiTypeDelegateAdapter;
@@ -60,7 +61,7 @@ public class NewForumAdapter extends BaseMultiTypeDelegateAdapter<ForumPageBean.
     @NonNull
     @Override
     public LayoutHelper onCreateLayoutHelper() {
-        if (getContext().getResources().getBoolean(R.bool.is_tablet)) {
+        if (ExtensionsKt.isTablet(getContext())) {
             return new StaggeredGridLayoutHelper(2);
         } else {
             return new LinearLayoutHelper();
@@ -86,7 +87,7 @@ public class NewForumAdapter extends BaseMultiTypeDelegateAdapter<ForumPageBean.
 
     private int getMaxWidth() {
         int maxWidth = BaseApplication.ScreenInfo.EXACT_SCREEN_WIDTH - DisplayUtil.dp2px(getContext(), 40);
-        if (getContext().getResources().getBoolean(R.bool.is_tablet)) {
+        if (ExtensionsKt.isTablet(getContext())) {
             return maxWidth / 2;
         }
         return maxWidth;
@@ -94,7 +95,7 @@ public class NewForumAdapter extends BaseMultiTypeDelegateAdapter<ForumPageBean.
 
     private int getGridHeight() {
         int maxWidth = BaseApplication.ScreenInfo.EXACT_SCREEN_WIDTH - DisplayUtil.dp2px(getContext(), 70);
-        if (getContext().getResources().getBoolean(R.bool.is_tablet)) {
+        if (ExtensionsKt.isTablet(getContext())) {
             maxWidth = maxWidth / 2;
         }
         return maxWidth / 3;
diff --git a/app/src/main/java/com/huanchengfly/tieba/post/components/dividers/ForumDivider.java b/app/src/main/java/com/huanchengfly/tieba/post/components/dividers/ForumDivider.java
index e92fb999..b19573df 100644
--- a/app/src/main/java/com/huanchengfly/tieba/post/components/dividers/ForumDivider.java
+++ b/app/src/main/java/com/huanchengfly/tieba/post/components/dividers/ForumDivider.java
@@ -12,6 +12,7 @@ import androidx.core.content.ContextCompat;
 import androidx.recyclerview.widget.LinearLayoutManager;
 import androidx.recyclerview.widget.RecyclerView;
 
+import com.huanchengfly.tieba.post.ExtensionsKt;
 import com.huanchengfly.tieba.post.R;
 import com.huanchengfly.tieba.post.ui.theme.interfaces.Tintable;
 import com.huanchengfly.tieba.post.ui.theme.utils.ThemeUtils;
@@ -38,7 +39,7 @@ public class ForumDivider extends RecyclerView.ItemDecoration implements Tintabl
     public void getItemOffsets(@NonNull Rect outRect, @NonNull View view, @NonNull RecyclerView parent, @NonNull RecyclerView.State state) {
         super.getItemOffsets(outRect, view, parent, state);
         int position = parent.getChildAdapterPosition(view) - 1;
-        if (parent.getResources().getBoolean(R.bool.is_tablet)) {
+        if (ExtensionsKt.isTablet(parent.getContext())) {
             if (position % 2 == 0) {
                 outRect.set(0, 0, mDividerHeight / 2, mDividerHeight);
             } else {
diff --git a/app/src/main/java/com/huanchengfly/tieba/post/fragments/BaseFragment.kt b/app/src/main/java/com/huanchengfly/tieba/post/fragments/BaseFragment.kt
index c9d939cb..cd2550f3 100644
--- a/app/src/main/java/com/huanchengfly/tieba/post/fragments/BaseFragment.kt
+++ b/app/src/main/java/com/huanchengfly/tieba/post/fragments/BaseFragment.kt
@@ -12,11 +12,11 @@ import androidx.annotation.CallSuper
 import androidx.fragment.app.Fragment
 import butterknife.ButterKnife
 import butterknife.Unbinder
-import com.huanchengfly.tieba.post.R
 import com.huanchengfly.tieba.post.interfaces.BackHandledInterface
 import com.huanchengfly.tieba.post.interfaces.Refreshable
 import com.huanchengfly.tieba.post.isLandscape
 import com.huanchengfly.tieba.post.isPortrait
+import com.huanchengfly.tieba.post.isTablet
 import com.huanchengfly.tieba.post.utils.AppPreferencesUtils
 import com.huanchengfly.tieba.post.utils.HandleBackUtil
 import kotlinx.coroutines.*
@@ -191,7 +191,7 @@ abstract class BaseFragment : Fragment(), BackHandledInterface, CoroutineScope {
     }
 
     protected val isTablet: Boolean
-        get() = attachContext.resources.getBoolean(R.bool.is_tablet)
+        get() = attachContext.isTablet
 
     protected val isPortrait: Boolean
         get() = attachContext.resources.configuration.isPortrait
diff --git a/app/src/main/java/com/huanchengfly/tieba/post/fragments/MainForumListFragment.kt b/app/src/main/java/com/huanchengfly/tieba/post/fragments/MainForumListFragment.kt
index 5b7347b9..ed697b2f 100644
--- a/app/src/main/java/com/huanchengfly/tieba/post/fragments/MainForumListFragment.kt
+++ b/app/src/main/java/com/huanchengfly/tieba/post/fragments/MainForumListFragment.kt
@@ -126,7 +126,7 @@ class MainForumListFragment : BaseFragment(), Refreshable, Toolbar.OnMenuItemCli
             appPreferences.listSingle -> {
                 1
             }
-            resources.getBoolean(R.bool.is_tablet) -> {
+            attachContext.isTablet -> {
                 3
             }
             else -> {
diff --git a/app/src/main/res/drawable/bottom_item_icon_tint_list.xml b/app/src/main/res/color/bottom_item_icon_tint_list.xml
similarity index 100%
rename from app/src/main/res/drawable/bottom_item_icon_tint_list.xml
rename to app/src/main/res/color/bottom_item_icon_tint_list.xml
diff --git a/app/src/main/res/layout/activity_main.xml b/app/src/main/res/layout/activity_main.xml
index 34088076..3240dc50 100644
--- a/app/src/main/res/layout/activity_main.xml
+++ b/app/src/main/res/layout/activity_main.xml
@@ -29,8 +29,8 @@
         android:layout_alignParentBottom="true"
         app:bottomNavigationBackgroundTint="@color/default_color_nav"
         app:elevation="4dp"
-        app:itemIconTintList="@drawable/bottom_item_icon_tint_list"
-        app:itemTextTintList="@drawable/bottom_item_icon_tint_list"
+        app:itemIconTintList="@color/bottom_item_icon_tint_list"
+        app:itemTextTintList="@color/bottom_item_icon_tint_list"
         app:labelVisibilityMode="unlabeled"
         app:menu="@menu/navbar_main" />
 
diff --git a/app/src/main/res/values-sw600dp/booleans.xml b/app/src/main/res/values-sw600dp/booleans.xml
deleted file mode 100644
index b9786656..00000000
--- a/app/src/main/res/values-sw600dp/booleans.xml
+++ /dev/null
@@ -1,3 +0,0 @@
-<resources>
-    <bool name="is_tablet">true</bool>
-</resources>
\ No newline at end of file
diff --git a/app/src/main/res/values/booleans.xml b/app/src/main/res/values/booleans.xml
deleted file mode 100644
index 0a99eb02..00000000
--- a/app/src/main/res/values/booleans.xml
+++ /dev/null
@@ -1,3 +0,0 @@
-<resources>
-    <bool name="is_tablet">false</bool>
-</resources>
\ No newline at end of file