1 /*
2  * Copyright (C) 2014 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 
17 package com.example.android.elevationbasic;
18 
19 import android.support.v4.app.Fragment;
20 import android.os.Bundle;
21 import android.view.LayoutInflater;
22 import android.view.MenuItem;
23 import android.view.MotionEvent;
24 import android.view.View;
25 import android.view.ViewGroup;
26 
27 import com.example.android.common.logger.Log;
28 
29 public class ElevationBasicFragment extends Fragment {
30 
31     private final static String TAG = "ElevationBasicFragment";
32 
33     @Override
onCreate(Bundle savedInstanceState)34     public void onCreate(Bundle savedInstanceState) {
35         super.onCreate(savedInstanceState);
36         setHasOptionsMenu(true);
37     }
38 
39     @Override
onCreateView( LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)40     public View onCreateView(
41             LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
42         /**
43          * Inflates an XML containing two shapes: the first has a fixed elevation
44          * and the second ones raises when tapped.
45          */
46         View rootView = inflater.inflate(R.layout.elevation_basic, container, false);
47 
48         View shape2 = rootView.findViewById(R.id.floating_shape_2);
49 
50         /**
51          * Sets a {@Link View.OnTouchListener} that responds to a touch event on shape2.
52          */
53         shape2.setOnTouchListener(new View.OnTouchListener() {
54             @Override
55             public boolean onTouch(View view, MotionEvent motionEvent) {
56                 int action = motionEvent.getActionMasked();
57                 /* Raise view on ACTION_DOWN and lower it on ACTION_UP. */
58                 switch (action) {
59                     case MotionEvent.ACTION_DOWN:
60                         Log.d(TAG, "ACTION_DOWN on view.");
61                         view.setTranslationZ(120);
62                         break;
63                     case MotionEvent.ACTION_UP:
64                         Log.d(TAG, "ACTION_UP on view.");
65                         view.setTranslationZ(0);
66                         break;
67                     default:
68                         return false;
69                 }
70                 return true;
71             }
72         });
73         return rootView;
74     }
75 }