Workaround for preference anim

app/src/main/java/com/hippo/ehviewer/ui/SettingsActivity.java

@@ -21,6 +21,7 @@ import android.view.MenuItem;
 
 import androidx.annotation.StringRes;
 import androidx.appcompat.app.ActionBar;
+import androidx.fragment.app.FragmentTransaction;
 
 import com.google.android.material.snackbar.Snackbar;
 import com.hippo.ehviewer.R;
@@ -41,6 +42,7 @@ public final class SettingsActivity extends EhActivity {
         if (savedInstanceState == null) {
             getSupportFragmentManager()
                     .beginTransaction()
+                    .setTransition(FragmentTransaction.TRANSIT_FRAGMENT_MATCH_ACTIVITY_OPEN)
                     .replace(R.id.fragment, new SettingsFragment())
                     .commitAllowingStateLoss();
         }

app/src/main/java/com/hippo/ehviewer/ui/fragment/SettingsFragment.java

@@ -21,6 +21,9 @@ package com.hippo.ehviewer.ui.fragment;
 import android.os.Bundle;
 
 import androidx.annotation.Nullable;
+import androidx.fragment.app.Fragment;
+import androidx.fragment.app.FragmentTransaction;
+import androidx.preference.Preference;
 
 import com.hippo.ehviewer.R;
 
@@ -30,6 +33,24 @@ public class SettingsFragment extends BasePreferenceFragment {
         addPreferencesFromResource(R.xml.settings_headers);
     }
 
+    @Override
+    public boolean onPreferenceTreeClick(Preference preference) {
+        String key = preference.getKey();
+        try {
+            Fragment classObj = (Fragment)Class.forName(key).newInstance();
+            requireActivity().getSupportFragmentManager()
+                    .beginTransaction()
+                    .setTransition(FragmentTransaction.TRANSIT_FRAGMENT_FADE)
+                    .replace(R.id.fragment, classObj)
+                    .addToBackStack("1")
+                    .commitAllowingStateLoss();
+        } catch (ClassNotFoundException | IllegalAccessException | java.lang.InstantiationException e) {
+            e.printStackTrace();
+            return false;
+        }
+        return true;
+    }
+
     @Override
     public int getFragmentTitle() {
         return R.string.settings;