content: /*
   * Copyright (C) 2015 Bilibili
   * Copyright (C) 2015 Zhang Rui <bbcallen@gmail.com>
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *      http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  package com.alanwang4523.a4ijkplayerdemo.fragments;
  
  import android.annotation.SuppressLint;
  import android.os.Bundle;
  import com.alanwang4523.a4ijkplayerdemo.R;
  
  import androidx.preference.Preference;
  import androidx.preference.PreferenceFragmentCompat;
  import androidx.preference.PreferenceGroup;
  import androidx.preference.PreferenceGroupAdapter;
  import androidx.preference.PreferenceScreen;
  import androidx.recyclerview.widget.RecyclerView;
  
  public class SettingsFragment extends PreferenceFragmentCompat {
      public static SettingsFragment newInstance() {
          SettingsFragment f = new SettingsFragment();
          return f;
      }
  
      @Override
      public void onCreatePreferences(Bundle bundle, String s) {
          addPreferencesFromResource(R.xml.settings);
      }
  
  
      private void setAllPreferencesToAvoidHavingExtraSpace(Preference preference) {
          preference.setIconSpaceReserved(false);
          if (preference instanceof PreferenceGroup)
              for(int i=0;i<((PreferenceGroup) preference).getPreferenceCount();i++){
                  setAllPreferencesToAvoidHavingExtraSpace(((PreferenceGroup) preference).getPreference(i));
              }
      }
  
      @Override
      public void  setPreferenceScreen(PreferenceScreen preferenceScreen) {
          if (preferenceScreen != null)
              setAllPreferencesToAvoidHavingExtraSpace(preferenceScreen);
          super.setPreferenceScreen(preferenceScreen);
  
      }
  
      @SuppressLint("RestrictedApi")
      @Override
      protected RecyclerView.Adapter onCreateAdapter(PreferenceScreen preferenceScreen) {
          return new PreferenceGroupAdapter(preferenceScreen){
              @Override
              public void onPreferenceHierarchyChange(Preference preference) {
                  if(null!=preference){
                      setAllPreferencesToAvoidHavingExtraSpace(preference);
                  }
                  super.onPreferenceHierarchyChange(preference);
              }
          };
      }
  }
  