最近项目要实现ScrollView中嵌套广告轮播图+RecyleView卡片布局，并且RecyleView按照header和内容的排列样式，因为RecyleView的可扩展性很强，所以我毫无疑问的选择了它，而且让RecyleView实现了可拖拽的效果，

最后我再加上了下拉刷新的效果(这里我用的下拉刷新控件是三方的SmartRefreshLayout)。记得刚开始实现这个效果的时候还是十分的得心印手。可是当我测试的时候，发现RecyleView的子item的拖拽效果并不流畅，起初我以

为是由于RecyleView和ScrollView的滑动冲突导致的，可是慢慢我自己重新写了个demo，逐步调试，发现肯定是下拉刷新控件和ScrollView的原因造成的，于是对症下药，终于找到了解决的办法，这里将我的答案记录下来，为了

后面其他的人遇到和我一样的问题，避免他们走很多的弯路，希望会对他们有所帮助，当然把自己遇到问题和解决问题的办法都记录下来，这对自己来说也是一种成长。如果有其他更好的思路，希望给我留言，谢谢。

　解决办法一:

　　　　    在布局页面中把ScrollView控件换成NestedScrollView控件：

　　　　    对NestedScrollView的详解:http://www.cnblogs.com/skytwo/p/4613912.html

  1. 　　　　
  1.   <android.support.v4.widget.NestedScrollView
  2.    　　　　  android:layout_width="match_parent"
  3.     　　　　 android:layout_height="match_parent">
  4.  
  5.  　　　　　　..............
  6.  
  7. </android.support.v4.widget.NestedScrollView>
  1. 以下是简单demo：  

  1.  
  2. MainActivity:用底部BottomNavigationBar，实现viewpager和fragment连用
  1. 代码:
  1. public class MainActivity extends AppCompatActivity implements BottomNavigationBar.OnTabSelectedListener,ViewPager.OnPageChangeListener{
  2.     private ViewPager viewPager;
  3.     private BottomNavigationBar bottomNavigationBar;
  4.  
  5.     //存放fragment的集合
  6.     private Fragment[] fragments;
  7.  
  8.     //切换不同fragment用的下标
  9.     private int index;
  10.     @Override
  11.     protected void onCreate(Bundle savedInstanceState) {
  12.         super.onCreate(savedInstanceState);
  13.         setContentView(R.layout.activity_main);
  14.         initBottomNavigationBar();
  15.         initViewPager();
  16.  
  17.     }
  18.     //初始化底部导航菜单
  19.     private void initBottomNavigationBar() {
  20.         bottomNavigationBar = (BottomNavigationBar) findViewById(R.id.bottom_navigation_bar);
  21.         bottomNavigationBar.setTabSelectedListener(this);
  22.         bottomNavigationBar.clearAll();
  23.         bottomNavigationBar.setMode(BottomNavigationBar.MODE_FIXED);
  24.         bottomNavigationBar.setBackgroundStyle(BottomNavigationBar.BACKGROUND_STYLE_STATIC);
  25.         bottomNavigationBar.addItem(new BottomNavigationItem(R.drawable.ic_launcher,"主页").setInactiveIconResource(R.drawable.ic_launcher).setActiveColorResource(R.color.colorPrimaryDark))
  26.                 .addItem(new BottomNavigationItem(R.drawable.ic_launcher,"单据").setInactiveIconResource(R.drawable.ic_launcher).setActiveColorResource(R.color.colorPrimaryDark))
  27.                 .addItem(new BottomNavigationItem(R.drawable.ic_launcher, "审核").setInactiveIconResource(R.drawable.ic_launcher).setActiveColorResource(R.color.colorPrimaryDark))
  28.                 .addItem(new BottomNavigationItem(R.drawable.ic_launcher, "报表").setInactiveIconResource(R.drawable.ic_launcher).setActiveColorResource(R.color.colorPrimaryDark))
  29.                 .addItem(new BottomNavigationItem(R.drawable.ic_launcher,"设置").setInactiveIconResource(R.drawable.ic_launcher).setActiveColorResource(R.color.colorPrimaryDark))
  30.                 .initialise();
  31.     }
  32.     //初始化viewpager
  33.     private void initViewPager() {
  34.         viewPager = (ViewPager) findViewById(R.id.view_pager);
  35.         fragments = new Fragment[];
  36.         fragments[]=new FragOne();
  37.         fragments[]=new FragTwo();
  38.         fragments[]=new FragThree();
  39.         fragments[]=new FragFour();
  40.         fragments[]=new FragFive();
  41.  
  42.         viewPager.setOffscreenPageLimit();
  43.         viewPager.setAdapter(new SectionsPagerAdapter(getSupportFragmentManager(), fragments));
  44.         viewPager.addOnPageChangeListener(this);
  45.         viewPager.setCurrentItem();
  46.  
  47.     }
  48.     @Override
  49.     public void onTabSelected(int position) {
  50.         viewPager.setCurrentItem(position);
  51.     }
  52.  
  53.     @Override
  54.     public void onTabUnselected(int position) {
  55.  
  56.     }
  57.  
  58.     @Override
  59.     public void onTabReselected(int position) {
  60.  
  61.     }
  62.  
  63.     @Override
  64.     public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
  65.  
  66.     }
  67.  
  68.     @Override
  69.     public void onPageSelected(int i) {
  70.         bottomNavigationBar.selectTab(i);
  71.         this.index = i;
  72.  
  73.     }
  74.  
  75.     @Override
  76.     public void onPageScrollStateChanged(int state) {
  77.  
  78.     }
  79.  
  80.      class SectionsPagerAdapter extends FragmentPagerAdapter {
  81.         Fragment fragments[]=new Fragment[];
  82.  
  83.         public SectionsPagerAdapter(FragmentManager fm, Fragment fragments[]) {
  84.             super(fm);
  85.             this.fragments = fragments;
  86.         }
  87.  
  88.         @Override
  89.         public Fragment getItem(int position) {
  90.             return fragments[position];
  91.         }
  92.  
  93.         @Override
  94.         public int getCount() {
  95.             return fragments.length;
  96.         }
  97.     }
  98. }
  1. MainActity布局：
  1. <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
  2.     xmlns:app="http://schemas.android.com/apk/res-auto"
  3.     xmlns:tools="http://schemas.android.com/tools"
  4.     android:layout_width="match_parent"
  5.     android:layout_height="match_parent"
  6.     android:orientation="vertical"
  7.     tools:context="com.example.admin.demo.MainActivity">
  8.  
  9.     <android.support.v4.view.ViewPager
  10.         android:id="@+id/view_pager"
  11.         android:layout_width="match_parent"
  12.         android:layout_height="0dp"
  13.         android:layout_weight=""
  14.         />
  15.     <com.ashokvarma.bottomnavigation.BottomNavigationBar
  16.         android:id="@+id/bottom_navigation_bar"
  17.         android:layout_width="wrap_content"
  18.         android:layout_height="wrap_content"
  19.         android:layout_gravity="bottom"
  20.         />
  21.  
  22. </LinearLayout>
  1. 主fragment:实现下拉刷新、上拉加载、RecyleView拖拽等各种效果的fragment
  1. public class FragOne extends Fragment implements MyItemTouchCallback.OnDragListener {
  2.     private List<String> list = new ArrayList<String>();
  3.     private View parent;
  4.     //显示模块的recyleview
  5.     private RecyclerView mRecyclerView;
  6.     //可拖动模块的帮助类
  7.     private ItemTouchHelper itemTouchHelper;
  8.     //适配器
  9.     private RecyleViewAdapter mRecyclerAdapter;
  10.  
  11.     //声明刷新控件
  12.     private SmartRefreshLayout srf;
  13.  
  14.     @Override
  15.     public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
  16.         parent = inflater.inflate(R.layout.frag_one, container, false);
  17.         initView();
  18.         return parent;
  19.     }
  20.     private void initView() {
  21.         for (int i = ; i < ; i++) {
  22.             list.add(i + "");
  23.         }
  24.         mRecyclerView = (RecyclerView) parent.findViewById(recyclerView);
  25.  
  26.         // 设置添加删除item的时候的动画效果
  27.         mRecyclerView.setItemAnimator(new DefaultItemAnimator());
  28.  
  29.         GridLayoutManager gridLayoutManager = new GridLayoutManager(getActivity(), );
  30.         gridLayoutManager.setSmoothScrollbarEnabled(true);
  31.         gridLayoutManager.setAutoMeasureEnabled(true);
  32.  
  33.         mRecyclerView.setLayoutManager(gridLayoutManager);
  34.         mRecyclerView.setHasFixedSize(true);
  35.         mRecyclerView.setNestedScrollingEnabled(false);
  36.  
  37.         // 设置适配器
  38.         mRecyclerAdapter = new RecyleViewAdapter(list);
  39.         itemTouchHelper = new ItemTouchHelper(new MyItemTouchCallback(mRecyclerAdapter).setOnDragListener(this));
  40.         itemTouchHelper.attachToRecyclerView(mRecyclerView);
  41.         mRecyclerView.setAdapter(mRecyclerAdapter);
  42.         mRecyclerView.addOnItemTouchListener(new OnRecyclerItemClickListener(mRecyclerView) {
  43.             @Override
  44.             public void onLongClick(RecyclerView.ViewHolder vh) {
  45.                 itemTouchHelper.startDrag(vh);
  46.                 VibratorUtil.Vibrate(getActivity(), );   //震动70ms
  47.             }
  48.  
  49.             @Override
  50.             public void onItemClick(RecyclerView.ViewHolder vh) {
  51.                 super.onItemClick(vh);
  52.             }
  53.         });
  54.         srf = (SmartRefreshLayout) parent.findViewById(R.id.refresh);
  55.         srf.setDefaultRefreshHeaderCreater(new DefaultRefreshHeaderCreater() {
  56.             @Override
  57.             public RefreshHeader createRefreshHeader(Context context, RefreshLayout layout) {
  58.                 return new ClassicsHeader(context);//指定为经典Header，默认是 贝塞尔雷达Header
  59.             }
  60.         });
  61.         srf.setOnRefreshListener(new OnRefreshListener() {
  62.             @Override
  63.             public void onRefresh(RefreshLayout refreshlayout) {
  64.                 srf.postDelayed(new Runnable() {
  65.                     @Override
  66.                     public void run() {
  67.                         mRecyclerAdapter.notifyDataSetChanged();
  68.  
  69.                         srf.finishRefresh();
  70.                         Toast.makeText(getActivity(), "刷新成功", Toast.LENGTH_SHORT).show();
  71.                     }
  72.                 }, );
  73.             }
  74.         });
  75.         srf.setEnableLoadmore(false);//屏蔽掉上拉加载的效果
  76.  
  77.     }
  78.  
  79.     @Override
  80.     public void onFinishDrag() {
  81.  
  82.     }
  83.  
  84.     class RecyleViewAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> implements MyItemTouchCallback.ItemTouchAdapter {
  85.         private List<String> mData;
  86.  
  87.         public RecyleViewAdapter(List<String> data) {
  88.             mData = data;
  89.         }
  90.  
  91.         @Override
  92.         public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
  93.             return new TestViewHolder(View.inflate(parent.getContext(), R.layout.item_test, null));
  94.         }
  95.  
  96.         @Override
  97.         public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {
  98.             TestViewHolder tHolder = (TestViewHolder) holder;
  99.             tHolder.tv.setText(mData.get(position));
  100.         }
  101.  
  102.         @Override
  103.         public int getItemCount() {
  104.             return mData == null ?  : mData.size();
  105.         }
  106.  
  107.         @Override
  108.         public void onMove(int fromPosition, int toPosition) {
  109.             if (fromPosition < toPosition) {
  110.                 for (int i = fromPosition; i < toPosition; i++) {
  111.                     Collections.swap(mData, i, i + );
  112.                 }
  113.             } else {
  114.                 for (int i = fromPosition; i > toPosition; i--) {
  115.                     Collections.swap(mData, i, i - );
  116.                 }
  117.             }
  118.             notifyItemMoved(fromPosition, toPosition);
  119.         }
  120.  
  121.         @Override
  122.         public void onSwiped(int position) {
  123.             mData.remove(position);
  124.             notifyItemRemoved(position);
  125.  
  126.         }
  127.  
  128.         private class TestViewHolder extends RecyclerView.ViewHolder {
  129.             TextView tv;
  130.  
  131.             public TestViewHolder(View itemView) {
  132.                 super(itemView);
  133.                 tv = (TextView) itemView.findViewById(R.id.tv);
  134.             }
  135.  
  136.         }
  137.  
  138.     }
  1. 主fragment布局:
  1. <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
  2.     android:layout_width="match_parent"
  3.     android:layout_height="match_parent"
  4.     android:orientation="vertical">
  5.  
  6.     <com.scwang.smartrefresh.layout.SmartRefreshLayout
  7.         android:id="@+id/refresh"
  8.         android:layout_width="match_parent"
  9.         android:layout_height="match_parent">
  10.  
  11.         <android.support.v4.widget.NestedScrollView
  12.             android:layout_width="match_parent"
  13.             android:layout_height="match_parent">
  14.  
  15.             <LinearLayout
  16.                 android:layout_width="match_parent"
  17.                 android:layout_height="match_parent"
  18.                 android:orientation="vertical">
  19.  
  20.                 <TextView
  21.                     android:layout_width="wrap_content"
  22.                     android:layout_height="wrap_content"
  23.                     android:text="@string/test" />
  24.  
  25.                 <RelativeLayout
  26.                     android:layout_width="match_parent"
  27.                     android:layout_height="match_parent"
  28.                     android:descendantFocusability="blocksDescendants">
  29.  
  30.                     <android.support.v7.widget.RecyclerView
  31.                         android:id="@+id/recyclerView"
  32.                         android:layout_width="match_parent"
  33.                         android:layout_height="wrap_content"></android.support.v7.widget.RecyclerView>
  34.                 </RelativeLayout>
  35.             </LinearLayout>
  36.         </android.support.v4.widget.NestedScrollView>
  37.     </com.scwang.smartrefresh.layout.SmartRefreshLayout>
  38.  
  39. </LinearLayout>
  1. RecyleView实现可拖拽效果的帮助类:
  1. MyItemTouchCallback :
  1. public class MyItemTouchCallback extends ItemTouchHelper.Callback {
  2.  
  3.     private ItemTouchAdapter itemTouchAdapter;
  4.     public MyItemTouchCallback(ItemTouchAdapter itemTouchAdapter){
  5.         this.itemTouchAdapter = itemTouchAdapter;
  6.     }
  7.  
  8.     @Override
  9.     public boolean isLongPressDragEnabled() {
  10.         return false;
  11.     }
  12.  
  13.     @Override
  14.     public boolean isItemViewSwipeEnabled() {
  15.         return true;
  16.     }
  17.  
  18.     @Override
  19.     public int getMovementFlags(RecyclerView recyclerView, RecyclerView.ViewHolder viewHolder) {
  20.         if (recyclerView.getLayoutManager() instanceof GridLayoutManager) {
  21.             final int dragFlags = ItemTouchHelper.UP | ItemTouchHelper.DOWN |
  22.                     ItemTouchHelper.LEFT | ItemTouchHelper.RIGHT;
  23.             final int swipeFlags = ;
  24.             return makeMovementFlags(dragFlags, swipeFlags);
  25.         } else {
  26.             final int dragFlags = ItemTouchHelper.UP | ItemTouchHelper.DOWN;
  27.             final int swipeFlags = ;
  28.             return makeMovementFlags(dragFlags, swipeFlags);
  29.         }
  30.     }
  31.  
  32.     @Override
  33.     public boolean onMove(RecyclerView recyclerView, RecyclerView.ViewHolder viewHolder, RecyclerView.ViewHolder target) {
  34.         int fromPosition = viewHolder.getAdapterPosition();//得到拖动ViewHolder的position
  35.         int toPosition = target.getAdapterPosition();//得到目标ViewHolder的position
  36.         itemTouchAdapter.onMove(fromPosition,toPosition);
  37.         return true;
  38.     }
  39.  
  40.     @Override
  41.     public void onSwiped(RecyclerView.ViewHolder viewHolder, int direction) {
  42.         int position = viewHolder.getAdapterPosition();
  43.         itemTouchAdapter.onSwiped(position);
  44.  
  45.     }
  46.  
  47.     @Override
  48.     public void onChildDraw(Canvas c, RecyclerView recyclerView, RecyclerView.ViewHolder viewHolder, float dX, float dY, int actionState, boolean isCurrentlyActive) {
  49.         if (actionState == ItemTouchHelper.ACTION_STATE_SWIPE) {
  50.             //滑动时改变Item的透明度
  51.             final float alpha =  - Math.abs(dX) / (float) viewHolder.itemView.getWidth();
  52.             viewHolder.itemView.setAlpha(alpha);
  53.             viewHolder.itemView.setTranslationX(dX);
  54.         } else {
  55.             super.onChildDraw(c, recyclerView, viewHolder, dX, dY, actionState, isCurrentlyActive);
  56.         }
  57.     }
  58.  
  59.     @Override
  60.     public void onSelectedChanged(RecyclerView.ViewHolder viewHolder, int actionState) {
  61.         if (actionState != ItemTouchHelper.ACTION_STATE_IDLE) {
  62.             if (background == null && bkcolor == -) {
  63.                 Drawable drawable = viewHolder.itemView.getBackground();
  64.                 if (drawable == null) {
  65.                     bkcolor = ;
  66.                 } else {
  67.                     background = drawable;
  68.                 }
  69.             }
  70.             viewHolder.itemView.setBackgroundColor(Color.LTGRAY);
  71.         }
  72.         super.onSelectedChanged(viewHolder, actionState);
  73.     }
  74.  
  75.     @Override
  76.     public void clearView(RecyclerView recyclerView, RecyclerView.ViewHolder viewHolder) {
  77.         super.clearView(recyclerView, viewHolder);
  78.  
  79.         viewHolder.itemView.setAlpha(1.0f);
  80.         if (background != null) viewHolder.itemView.setBackgroundDrawable(background);
  81.         if (bkcolor != -) viewHolder.itemView.setBackgroundColor(bkcolor);
  82.         //viewHolder.itemView.setBackgroundColor(0);
  83.  
  84.         if (onDragListener!=null){
  85.             onDragListener.onFinishDrag();
  86.         }
  87.     }
  88.  
  89.     private Drawable background = null;
  90.     private int bkcolor = -;
  91.  
  92.     private OnDragListener onDragListener;
  93.     public MyItemTouchCallback setOnDragListener(OnDragListener onDragListener) {
  94.         this.onDragListener = onDragListener;
  95.         return this;
  96.     }
  97.     public interface OnDragListener{
  98.         void onFinishDrag();
  99.     }
  100.  
  101.     public interface ItemTouchAdapter {
  102.         void onMove(int fromPosition, int toPosition);
  103.         void onSwiped(int position);
  104.     }
  105. }
  1. OnRecyclerItemClickListener:
  1. public class OnRecyclerItemClickListener implements RecyclerView.OnItemTouchListener{
  2.     private GestureDetectorCompat mGestureDetector;
  3.     private RecyclerView recyclerView;
  4.  
  5.     public OnRecyclerItemClickListener(RecyclerView recyclerView){
  6.         this.recyclerView = recyclerView;
  7.         mGestureDetector = new GestureDetectorCompat(recyclerView.getContext(),new ItemTouchHelperGestureListener());
  8.     }
  9.     @Override
  10.     public boolean onInterceptTouchEvent(RecyclerView rv, MotionEvent e) {
  11.         mGestureDetector.onTouchEvent(e);
  12.         return false;
  13.     }
  14.  
  15.     @Override
  16.     public void onTouchEvent(RecyclerView rv, MotionEvent e) {
  17.         mGestureDetector.onTouchEvent(e);
  18.     }
  19.  
  20.     @Override
  21.     public void onRequestDisallowInterceptTouchEvent(boolean disallowIntercept) {
  22.  
  23.     }
  24.     private class ItemTouchHelperGestureListener extends GestureDetector.SimpleOnGestureListener {
  25.  
  26.         @Override
  27.         public boolean onSingleTapUp(MotionEvent e) {
  28.             View child = recyclerView.findChildViewUnder(e.getX(), e.getY());
  29.             if (child!=null) {
  30.                 RecyclerView.ViewHolder vh = recyclerView.getChildViewHolder(child);
  31.                 onItemClick(vh);
  32.             }
  33.             return true;
  34.         }
  35.         @Override
  36.         public void onLongPress(MotionEvent e) {
  37.             View child = recyclerView.findChildViewUnder(e.getX(), e.getY());
  38.             if (child!=null) {
  39.                 RecyclerView.ViewHolder vh = recyclerView.getChildViewHolder(child);
  40.                 onLongClick(vh);
  41.             }
  42.         }
  43.     }
  44.     public void onLongClick(RecyclerView.ViewHolder vh){}
  45.     public void onItemClick(RecyclerView.ViewHolder vh){}
  46. }
  1.  VibratorUtil(手机振动工具类)
  1. /**
  2.  * 手机震动工具类
  3.  * @author Administrator
  4.  * 使用必须添加权限：<uses-permission android:name="android.permission.VIBRATE" />
  5.  */
  6. public class VibratorUtil {
  7.  
  8.     /**
  9.      * final Activity activity  ：调用该方法的Activity实例
  10.      * long milliseconds ：震动的时长，单位是毫秒
  11.      * long[] pattern  ：自定义震动模式 。数组中数字的含义依次是[静止时长，震动时长，静止时长，震动时长。。。]时长的单位是毫秒
  12.      * boolean isRepeat ： 是否反复震动，如果是true，反复震动，如果是false，只震动一次
  13.      */
  14.     public static void Vibrate(final Activity activity, long milliseconds) {
  15.         Vibrator vib = (Vibrator) activity.getSystemService(Service.VIBRATOR_SERVICE);
  16.         vib.vibrate(milliseconds);
  17.     }
  18.     public static void Vibrate(final Activity activity, long[] pattern, boolean isRepeat) {
  19.         Vibrator vib = (Vibrator) activity.getSystemService(Service.VIBRATOR_SERVICE);
  20.         vib.vibrate(pattern, isRepeat ?  : -);
  21.     }
  22.  
  23. }

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