| /* |
| * Copyright 2013 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.example.android.batchstepsensor.cardstream; |
| |
| import android.content.Context; |
| import android.util.AttributeSet; |
| import android.view.MotionEvent; |
| import android.view.ViewConfiguration; |
| import android.widget.RelativeLayout; |
| |
| /** |
| * Custom Button with a special 'pressed' effect for touch events. |
| */ |
| public class CardLayout extends RelativeLayout { |
| |
| private boolean mSwiping = false; |
| private float mDownX = 0.f; |
| private float mDownY = 0.f; |
| private float mTouchSlop = 0.f; |
| |
| public CardLayout(Context context) { |
| super(context); |
| init(); |
| } |
| |
| public CardLayout(Context context, AttributeSet attrs) { |
| super(context, attrs); |
| init(); |
| } |
| |
| public CardLayout(Context context, AttributeSet attrs, int defStyle) { |
| super(context, attrs, defStyle); |
| init(); |
| } |
| |
| private void init(){ |
| setFocusable(true); |
| setDescendantFocusability(FOCUS_AFTER_DESCENDANTS); |
| setWillNotDraw(false); |
| setClickable(true); |
| |
| mTouchSlop = ViewConfiguration.get(getContext()).getScaledTouchSlop() * 2.f; |
| } |
| |
| @Override |
| public boolean onTouchEvent(MotionEvent event) { |
| switch(event.getAction()){ |
| case MotionEvent.ACTION_CANCEL: |
| case MotionEvent.ACTION_UP: |
| mSwiping = false; |
| break; |
| } |
| return super.onTouchEvent(event); |
| } |
| |
| @Override |
| public boolean onInterceptTouchEvent(MotionEvent event) { |
| |
| switch(event.getAction()){ |
| case MotionEvent.ACTION_MOVE: |
| if( !mSwiping ){ |
| mSwiping = Math.abs(mDownX - event.getX()) > mTouchSlop; |
| } |
| break; |
| case MotionEvent.ACTION_DOWN: |
| mDownX = event.getX(); |
| mDownY = event.getY(); |
| mSwiping = false; |
| break; |
| case MotionEvent.ACTION_CANCEL: |
| case MotionEvent.ACTION_UP: |
| mSwiping = false; |
| break; |
| } |
| return mSwiping; |
| } |
| } |