1 /*
2  * Copyright (C) 2020 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.rotaryplayground;
17 
18 import android.os.Bundle;
19 import android.util.Log;
20 import android.view.View;
21 import android.widget.Toast;
22 
23 import androidx.fragment.app.Fragment;
24 import androidx.fragment.app.FragmentActivity;
25 
26 import java.util.Random;
27 
28 /**
29  * The main activity for Rotary Playground
30  *
31  * This activity starts the menu fragment and handles event calls (e.g. android:onClick) from
32  * elements in fragments.
33  */
34 public class RotaryActivity extends FragmentActivity {
35 
36     private static final String TAG = "RotaryActivity";
37 
38     private final Random mRandom = new Random();
39 
40     private Fragment mMenuFragment = null;
41 
42     @Override
onCreate(Bundle savedInstanceState)43     protected void onCreate(Bundle savedInstanceState) {
44         super.onCreate(savedInstanceState);
45         setContentView(R.layout.rotary_activity);
46         showMenuFragment();
47     }
48 
49     /** Event handler for button clicks. */
onRotaryButtonClick(View v)50     public void onRotaryButtonClick(View v) {
51         final String[] greetings = getResources().getStringArray(R.array.greetings);
52         showToast(greetings[mRandom.nextInt(greetings.length)]);
53     }
54 
showMenuFragment()55     private void showMenuFragment() {
56         if (mMenuFragment == null) {
57             mMenuFragment = new RotaryMenu();
58         }
59         getSupportFragmentManager().beginTransaction()
60                 .replace(R.id.rotary_menu, mMenuFragment)
61                 .commit();
62     }
63 
showToast(String message)64     private void showToast(String message) {
65         Log.d(TAG, "showToast -> " + message);
66         Toast.makeText(this, message, Toast.LENGTH_SHORT).show();
67     }
68 }