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