1 /*
2 * Copyright 2013 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 
18 package com.example.android.batchstepsensor.cardstream;
19 
20 import android.content.Context;
21 import android.os.Build;
22 import android.support.v4.view.ViewCompat;
23 import android.util.AttributeSet;
24 import android.view.MotionEvent;
25 import android.view.animation.BounceInterpolator;
26 import android.view.animation.DecelerateInterpolator;
27 import android.widget.Button;
28 
29 /**
30  * Custom Button with a special 'pressed' effect for touch events.
31  */
32 public class CardActionButton extends Button {
33 
CardActionButton(Context context)34     public CardActionButton(Context context) {
35         super(context);
36     }
37 
CardActionButton(Context context, AttributeSet attrs)38     public CardActionButton(Context context, AttributeSet attrs) {
39         super(context, attrs);
40     }
41 
CardActionButton(Context context, AttributeSet attrs, int defStyle)42     public CardActionButton(Context context, AttributeSet attrs, int defStyle) {
43         super(context, attrs, defStyle);
44     }
45 
46     @Override
onTouchEvent(MotionEvent event)47     public boolean onTouchEvent(MotionEvent event) {
48 
49         switch (event.getAction()) {
50             case MotionEvent.ACTION_DOWN: {
51                 setPressed(true);
52                 if (Build.VERSION.SDK_INT <= Build.VERSION_CODES.KITKAT) {
53                     animate().scaleX(0.98f).scaleY(0.98f).setDuration(100)
54                         .setInterpolator(new DecelerateInterpolator());
55                 } else {
56                     ViewCompat.setElevation(this, 8.f);
57                 }
58                 break;
59             }
60             case MotionEvent.ACTION_UP:
61             case MotionEvent.ACTION_CANCEL: {
62                 setPressed(false);
63                 if (Build.VERSION.SDK_INT <= Build.VERSION_CODES.KITKAT) {
64                     animate().scaleX(1.f).scaleY(1.f).setDuration(50)
65                         .setInterpolator(new BounceInterpolator());
66                 } else {
67                     ViewCompat.setElevation(this, 0.f);
68                 }
69                 break;
70             }
71         }
72 
73         return super.onTouchEvent(event);
74     }
75 
76 }
77 
78