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      1 /*
      2  * Copyright (C) 2017 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License
     15  */
     16 package com.android.car.settings.common;
     17 
     18 import android.os.Bundle;
     19 import android.support.v7.app.AppCompatActivity;
     20 import android.support.v7.widget.Toolbar;
     21 
     22 import com.android.car.settings.R;
     23 import com.android.car.settings.home.HomepageFragment;
     24 
     25 /**
     26  * Base activity class for car settings, provides a action bar with a back button that goes to
     27  * previous activity.
     28  */
     29 public class CarSettingActivity extends AppCompatActivity implements
     30         BaseFragment.FragmentController {
     31 
     32     @Override
     33     protected void onCreate(Bundle savedInstanceState) {
     34         super.onCreate(savedInstanceState);
     35         setContentView(R.layout.app_compat_activity);
     36         Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
     37         setSupportActionBar(toolbar);
     38         HomepageFragment homepageFragment = HomepageFragment.getInstance();
     39         homepageFragment.setFragmentController(this);
     40         launchFragment(homepageFragment);
     41     }
     42 
     43     @Override
     44     public void launchFragment(BaseFragment fragment) {
     45         fragment.setFragmentController(this);
     46         getFragmentManager()
     47                 .beginTransaction()
     48                 .setCustomAnimations(
     49                         R.animator.trans_right_in ,
     50                         R.animator.trans_left_out,
     51                         R.animator.trans_left_in,
     52                         R.animator.trans_right_out)
     53                 .replace(R.id.fragment_container, fragment)
     54                 .addToBackStack(null)
     55                 .commit();
     56     }
     57 
     58     @Override
     59     public void goBack() {
     60         if (getFragmentManager().getBackStackEntryCount() > 0) {
     61             getFragmentManager().popBackStack();
     62         }
     63     }
     64 
     65     @Override
     66     public void onBackPressed() {
     67         if (getFragmentManager().getBackStackEntryCount() > 0) {
     68             getFragmentManager().popBackStack();
     69         } else {
     70             super.onBackPressed();
     71         }
     72     }
     73 }
     74