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      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 
     19 
     20 package com.example.android.batchstepsensor.cardstream;
     21 
     22 import android.content.Context;
     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 
     34     public CardActionButton(Context context) {
     35         super(context);
     36     }
     37 
     38     public CardActionButton(Context context, AttributeSet attrs) {
     39         super(context, attrs);
     40     }
     41 
     42     public CardActionButton(Context context, AttributeSet attrs, int defStyle) {
     43         super(context, attrs, defStyle);
     44     }
     45 
     46     @Override
     47     public boolean onTouchEvent(MotionEvent event) {
     48 
     49         switch(event.getAction()){
     50             case MotionEvent.ACTION_DOWN:
     51                 setPressed(true);
     52                 animate().scaleX(0.98f).scaleY(0.98f).alpha(0.8f).setDuration(100).
     53                         setInterpolator(new DecelerateInterpolator());
     54                 break;
     55             case MotionEvent.ACTION_UP:
     56                 animate().scaleX(1.0f).scaleY(1.f).alpha(1.0f).setDuration(50).
     57                         setInterpolator(new BounceInterpolator());
     58                 break;
     59             case MotionEvent.ACTION_CANCEL:
     60                 animate().scaleX(1.0f).scaleY(1.f).alpha(1.0f).setDuration(50).
     61                         setInterpolator(new BounceInterpolator());
     62                 break;
     63         }
     64 
     65         return super.onTouchEvent(event);
     66     }
     67 
     68 }
     69 
     70