package com.gump.passport.demo;
  
  import android.content.res.Configuration;
  import android.os.Bundle;
  import android.preference.PreferenceActivity;
  import android.support.annotation.LayoutRes;
  import android.support.annotation.Nullable;
  import android.support.v7.app.ActionBar;
  import android.support.v7.app.AppCompatDelegate;
  import android.support.v7.widget.Toolbar;
  import android.view.MenuInflater;
  import android.view.View;
  import android.view.ViewGroup;
  
  /**
   * A {@link android.preference.PreferenceActivity} which implements and proxies the necessary calls
   * to be used with AppCompat.
   */
  public abstract class AppCompatPreferenceActivity extends PreferenceActivity {
  
      private AppCompatDelegate mDelegate;
  
      @Override
      protected void onCreate(Bundle savedInstanceState) {
          getDelegate().installViewFactory();
          getDelegate().onCreate(savedInstanceState);
          super.onCreate(savedInstanceState);
      }
  
      @Override
      protected void onPostCreate(Bundle savedInstanceState) {
          super.onPostCreate(savedInstanceState);
          getDelegate().onPostCreate(savedInstanceState);
      }
  
      public ActionBar getSupportActionBar() {
          return getDelegate().getSupportActionBar();
      }
  
      public void setSupportActionBar(@Nullable Toolbar toolbar) {
          getDelegate().setSupportActionBar(toolbar);
      }
  
      @Override
      public MenuInflater getMenuInflater() {
          return getDelegate().getMenuInflater();
      }
  
      @Override
      public void setContentView(@LayoutRes int layoutResID) {
          getDelegate().setContentView(layoutResID);
      }
  
      @Override
      public void setContentView(View view) {
          getDelegate().setContentView(view);
      }
  
      @Override
      public void setContentView(View view, ViewGroup.LayoutParams params) {
          getDelegate().setContentView(view, params);
      }
  
      @Override
      public void addContentView(View view, ViewGroup.LayoutParams params) {
          getDelegate().addContentView(view, params);
      }
  
      @Override
      protected void onPostResume() {
          super.onPostResume();
          getDelegate().onPostResume();
      }
  
      @Override
      protected void onTitleChanged(CharSequence title, int color) {
          super.onTitleChanged(title, color);
          getDelegate().setTitle(title);
      }
  
      @Override
      public void onConfigurationChanged(Configuration newConfig) {
          super.onConfigurationChanged(newConfig);
          getDelegate().onConfigurationChanged(newConfig);
      }
  
      @Override
      protected void onStop() {
          super.onStop();
          getDelegate().onStop();
      }
  
      @Override
      protected void onDestroy() {
          super.onDestroy();
          getDelegate().onDestroy();
      }
  
      public void invalidateOptionsMenu() {
          getDelegate().invalidateOptionsMenu();
      }
  
      private AppCompatDelegate getDelegate() {
          if (mDelegate == null) {
              mDelegate = AppCompatDelegate.create(this, null);
          }
          return mDelegate;
      }
  }