频道管理

最新推荐文章于 2021-08-27 16:28:39 发布

原创最新推荐文章于 2021-08-27 16:28:39 发布 · 374 阅读

CC 4.0 BY-SA版权

类名MainActivity 
===================================================================

package com.test.drag;

import android.graphics.Bitmap;

import android.os.Bundle;

import android.os.Handler;

import android.support.v7.app.AppCompatActivity;

import android.view.View;

import android.view.ViewGroup;

import android.view.animation.Animation;

import android.view.animation.AnimationSet;

import android.view.animation.TranslateAnimation;

import android.widget.AdapterView;

import android.widget.AdapterView.OnItemClickListener;

import android.widget.GridView;

import android.widget.ImageView;

import android.widget.LinearLayout;

import android.widget.TextView;

import com.test.drag.view.DragGridView;

import com.test.drag.view.MyGridView;

import java.util.ArrayList;

import java.util.List;

public class MainActivity extends AppCompatActivity implements OnItemClickListener {

  private MyGridView mOtherGv;

 private DragGridView mUserGv;

  private List<String> mUserList = new ArrayList<>();

  private List<String> mOtherList = new ArrayList<>();

  private OtherAdapter mOtherAdapter;

  private DragAdapter  mUserAdapter;

  @Override

 protected void onCreate(Bundle savedInstanceState) {

      super.onCreate(savedInstanceState);

    setContentView(R.layout.activity_main);

      initView();

 public void initView() {

    mUserGv = (DragGridView) findViewById(R.id.userGridView);

     mOtherGv = (MyGridView) findViewById(R.id.otherGridView);

      mUserList.add("推荐");

        mUserList.add("热点");

       mUserList.add("上海");

      mUserList.add("时尚");

       mUserList.add("科技");

      mUserList.add("体育");

     mUserList.add("军事");

      mUserList.add("财经");

       mUserList.add("网络");

      mOtherList.add("汽车");

       mOtherList.add("房产");

       mOtherList.add("社会");

      mOtherList.add("情感");

      mOtherList.add("女人");

       mOtherList.add("旅游");

      mOtherList.add("健康");

      mOtherList.add("美女");

      mOtherList.add("游戏");

     mOtherList.add("数码");

     mOtherList.add("娱乐");

    mOtherList.add("探索");

       mUserAdapter = new DragAdapter(this, mUserList,true);

      mOtherAdapter = new OtherAdapter(this, mOtherList,false);

       mUserGv.setAdapter(mUserAdapter);

     mOtherGv.setAdapter(mOtherAdapter);

     mUserGv.setOnItemClickListener(this);

       mOtherGv.setOnItemClickListener(this);

  /**     *获取点击的Item的对应View，     *因为点击的Item已经有了自己归属的父容器MyGridView，所有我们要是有一个ImageView来代替Item移动     * @param view     * @return     */

   private ImageView getView(View view) {

     view.destroyDrawingCache();

   view.setDrawingCacheEnabled(true);

      Bitmap cache = Bitmap.createBitmap(view.getDrawingCache());

       view.setDrawingCacheEnabled(false);

   ImageView iv = new ImageView(this);

   iv.setImageBitmap(cache);

 return iv;    }

  /**     * 获取移动的VIEW，放入对应ViewGroup布局容器     * @param viewGroup     * @param view     * @param initLocation     * @return     */

   private View getMoveView(ViewGroup viewGroup, View view, int[] initLocation) {

      int x = initLocation[0];

       int y = initLocation[1];

      viewGroup.addView(view);

       LinearLayout.LayoutParams mLayoutParams = new LinearLayout.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT);

      mLayoutParams.leftMargin = x;

      mLayoutParams.topMargin = y;

    view.setLayoutParams(mLayoutParams);

      return view;

 /**     * 创建移动的ITEM对应的ViewGroup布局容器     * 用于存放我们移动的View     */

 private ViewGroup getMoveViewGroup() {

      //window中最顶层的view

  ViewGroup moveViewGroup = (ViewGroup) getWindow().getDecorView();

    LinearLayout moveLinearLayout = new LinearLayout(this);

     moveLinearLayout.setLayoutParams(new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT));

     moveViewGroup.addView(moveLinearLayout);

      return moveLinearLayout;    }

 /**     * 点击ITEM移动动画     *     * @param moveView     * @param startLocation     * @param endLocation     * @param moveChannel     * @param clickGridView     */

  private void MoveAnim(View moveView, int[] startLocation, int[] endLocation, final String moveChannel,                          final GridView clickGridView, final boolean isUser) {

    int[] initLocation = new int[2];

    //获取传递过来的VIEW的坐标

   moveView.getLocationInWindow(initLocation);

     //得到要移动的VIEW,并放入对应的容器中

  final ViewGroup moveViewGroup = getMoveViewGroup();

    final View mMoveView = getMoveView(moveViewGroup, moveView, initLocation);

    //创建移动动画

     TranslateAnimation moveAnimation = new TranslateAnimation(

 startLocation[0], endLocation[0], startLocation[1],                endLocation[1]);

    moveAnimation.setDuration(300L);

//动画时间        //动画配置

  AnimationSet moveAnimationSet = new AnimationSet(true);

   moveAnimationSet.setFillAfter(false);/

/动画效果执行完毕后，View对象不保留在终止的位置

      moveAnimationSet.addAnimation(moveAnimation);

   mMoveView.startAnimation(moveAnimationSet);

   moveAnimationSet.setAnimationListener(new Animation.AnimationListener() {

         @Override

    public void onAnimationStart(Animation animation) {            }

         @Override

       public void onAnimationRepeat(Animation animation) {            }

         @Override

       public void onAnimationEnd(Animation animation) {

  moveViewGroup.removeView(mMoveView);

             // 判断点击的是DragGrid还是OtherGridView

 if (isUser) {                    mOtherAdapter.setVisible(true);

                mOtherAdapter.notifyDataSetChanged();

               mUserAdapter.remove();

  } else {

    mUserAdapter.setVisible(true);

                   mUserAdapter.notifyDataSetChanged();

                 mOtherAdapter.remove();

});

  @Override

  public void onItemClick(AdapterView<?> parent, View view, final int position, long id) {        switch (parent.getId()) {

          case R.id.userGridView:

           //position为 0，1 的不可以进行任何操作

           if (position != 0 && position != 1) {

                final ImageView moveImageView = getView(view);

                if (moveImageView != null) {

               TextView newTextView = (TextView) view.findViewById(R.id.text_item);

                      final int[] startLocation = new int[2];

           newTextView.getLocationInWindow(startLocation);

     final String channel = ((DragAdapter) parent.getAdapter()).getItem(position);

//获取点击的频道内容

   mOtherAdapter.setVisible(false);

                //添加到最后一个

 mOtherAdapter.addItem(channel);

  new Handler().postDelayed(new Runnable() {

                      public void run() {

                             try {

                            int[] endLocation = new int[2];

                               //获取终点的坐标

                         mOtherGv.getChildAt(mOtherGv.getLastVisiblePosition()).getLocationInWindow(endLocation);

                                MoveAnim(moveImageView, startLocation, endLocation, channel, mUserGv, true);

                                   mUserAdapter.setRemove(position);

                          } catch (Exception localException) {

                         }                            }

                    }, 50L);                    }                }

            break;            case R.id.otherGridView:

            final ImageView moveImageView = getView(view);

            if (moveImageView != null) {

       TextView newTextView = (TextView) view.findViewById(R.id.text_item);

                   final int[] startLocation = new int[2];

          newTextView.getLocationInWindow(startLocation);

         final String channel = ((OtherAdapter) parent.getAdapter()).getItem(position);

                mUserAdapter.setVisible(false);

        //添加到最后一个

    mUserAdapter.addItem(channel);

               new Handler().postDelayed(new Runnable() {

                     public void run() {

                    try {

   int[] endLocation = new int[2];

                              //获取终点的坐标

                              mUserGv.getChildAt(mUserGv.getLastVisiblePosition()).getLocationInWindow(endLocation);

                   MoveAnim(moveImageView, startLocation, endLocation, channel, mOtherGv,false);

                               mOtherAdapter.setRemove(position);

         } catch (Exception localException) {                            }

               }                    }, 50L);                }

              break;

   default:

     break;        }    }}

=======================================================================
 其中的布局文件；布局名activity_main.xml
======================================================================= 
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"
    android:layout_height="match_parent" tools:context=".MainActivity">
    <ScrollView
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        >

        <LinearLayout
            android:id="@+id/subscribe_main_layout"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:orientation="vertical"
            android:paddingBottom="14.0dip" >

            <LinearLayout
                android:layout_width="fill_parent"
                android:layout_height="wrap_content"
                android:layout_marginLeft="10.0dip"
                android:layout_marginTop="14.0dip"
                android:gravity="bottom"
                android:orientation="horizontal" >


                <TextView
                    android:id="@+id/my_category_tip_text"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:textSize="13sp"
                    android:text="我的频道"
                    />
            </LinearLayout>

            <View
                android:id="@+id/seperate_line"
                android:layout_width="match_parent"
                android:layout_marginTop="10dp"
                android:layout_height="0.5dp"
                android:layout_marginBottom="14.0dip"
                android:background="@color/subscribe_item_drag_stroke" />

            <com.test.drag.view.DragGridView
                android:id="@+id/userGridView"
                android:layout_width="fill_parent"
                android:layout_height="wrap_content"
                android:layout_marginLeft="14dip"
                android:layout_marginRight="14dip"
                android:gravity="center"
                android:horizontalSpacing="14dip"
                android:listSelector="@android:color/transparent"
                android:numColumns="4"
                android:scrollbars="vertical"
                android:stretchMode="columnWidth"
                android:verticalSpacing="14.0px" />

            <View
                android:id="@+id/seperate_line2"
                android:layout_marginTop="10dp"
                android:layout_width="match_parent"
                android:layout_height="0.5dp"
                android:background="@color/subscribe_item_drag_stroke"/>

            <TextView
                android:id="@+id/more_category_text"
                android:layout_marginBottom="14.0dip"
                android:layout_width="wrap_content"
                android:layout_marginTop="10dp"
                android:layout_height="wrap_content"
                android:textSize="13sp"
                android:layout_marginLeft="10.0dip"
                android:text="更多频道" />

            <com.test.drag.view.MyGridView
                android:id="@+id/otherGridView"
                android:layout_width="fill_parent"
                android:layout_height="wrap_content"
                android:layout_marginLeft="14dip"
                android:layout_marginRight="14dip"
                android:gravity="center"
                android:horizontalSpacing="14dip"
                android:listSelector="@android:color/transparent"
                android:numColumns="4"
                android:scrollbars="vertical"
                android:stretchMode="columnWidth"
                android:verticalSpacing="14.0px" />
        </LinearLayout>
    </ScrollView>

</RelativeLayout>

============================================================
第二个类
类名：DragAdapter 
============================================================
package com.test.drag;

import android.content.Context;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.TextView;

import java.util.List;

public class DragAdapter extends BaseAdapter {
   /** TAG*/
   private final static String TAG = "DragAdapter";
   /** 是否显示底部的ITEM */
   private boolean isItemShow = false;
   private Context context;
   /** 控制的postion */
   private int holdPosition;
   /** 是否改变 */
   private boolean isChanged = false;
   /** 列表数据是否改变 */
   private boolean isListChanged = false;
   /** 是否可见 */
   boolean isVisible = true;
   /** 可以拖动的列表（即用户选择的频道列表） */
   public List<String> channelList;
   /** TextView 频道内容 */
   private TextView item_text;
   /** 要删除的position */
   public int remove_position = -1;
   /** 是否是用户频道 */
   private boolean isUser = false;
   public DragAdapter(Context context, List<String> channelList,boolean isUser) {
      this.context = context;
      this.channelList = channelList;
      this.isUser = isUser;
   }
   
   @Override
   public int getCount() {
      // TODO Auto-generated method stub
      return channelList == null ? 0 : channelList.size();
   }

   @Override
   public String getItem(int position) {
      // TODO Auto-generated method stub
      if (channelList != null && channelList.size() != 0) {
         return channelList.get(position);
      }
      return null;
   }

   @Override
   public long getItemId(int position) {
      // TODO Auto-generated method stub
      return position;
   }
   
   @Override
   public View getView(int position, View convertView, ViewGroup parent) {
      View view = LayoutInflater.from(context).inflate(R.layout.adapter_mygridview_item, null);
      item_text = (TextView) view.findViewById(R.id.text_item);
      String channel = getItem(position);
      item_text.setText(channel);
      if(isUser){
         if ((position == 0) || (position == 1)){
            item_text.setEnabled(false);
         }
      }
      if (isChanged && (position == holdPosition) && !isItemShow) {
         item_text.setText("");
         item_text.setSelected(true);
         item_text.setEnabled(true);
         isChanged = false;
      }
      if (!isVisible && (position == -1 + channelList.size())) {
         item_text.setText("");
         item_text.setSelected(true);
         item_text.setEnabled(true);
      }
      if(remove_position == position){
         item_text.setText("");
      }
      return view;
   }

   /** 添加频道列表 */
   public void addItem(String channel) {
      channelList.add(channel);
      isListChanged = true;
      notifyDataSetChanged();
   }

   /** 拖动变更频道排序 */
   public void exchange(int dragPostion, int dropPostion) {
      holdPosition = dropPostion;
      String dragItem = getItem(dragPostion);
      Log.d(TAG, "startPostion=" + dragPostion + ";endPosition=" + dropPostion);
      if (dragPostion < dropPostion) {
         channelList.add(dropPostion + 1, dragItem);
         channelList.remove(dragPostion);
      } else {
         channelList.add(dropPostion, dragItem);
         channelList.remove(dragPostion + 1);
      }
      isChanged = true;
      isListChanged = true;
      notifyDataSetChanged();
   }
   
   /** 获取频道列表 */
   public List<String> getChannnelLst() {
      return channelList;
   }

   /** 设置删除的position */
   public void setRemove(int position) {
      remove_position = position;
      notifyDataSetChanged();
   }

   /** 删除频道列表 */
   public void remove() {
      channelList.remove(remove_position);
      remove_position = -1;
      isListChanged = true;
      notifyDataSetChanged();
   }
   
   /** 设置频道列表 */
   public void setListDate(List<String> list) {
      channelList = list;
   }
   
   /** 获取是否可见 */
   public boolean isVisible() {
      return isVisible;
   }
   
   /** 排序是否发生改变 */
   public boolean isListChanged() {
      return isListChanged;
   }
   
   /** 设置是否可见 */
   public void setVisible(boolean visible) {
      isVisible = visible;
   }
   /** 显示放下的ITEM */
   public void setShowDropItem(boolean show) {
      isItemShow = show;
   }
}
=====================================================================
第二个类中布局   布局名:adapter_mygridview_item.xml
=====================================================================
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/rl_subscribe"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:minHeight="38.0dip"
    android:minWidth="72.0dip" >

    <TextView
        android:id="@+id/text_item"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerInParent="true"
        android:background="@drawable/subscribe_item_bg"
        android:gravity="center"
        android:minHeight="38.0dip"
        android:minWidth="72.0dip"
        android:textColor="@color/subscribe_item_text_color"
        android:textSize="14.0sp" />
    <!-- android:layout_margin="5dip" -->

    <ImageView
        android:id="@+id/icon_new"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:visibility="gone" />

</RelativeLayout>
============================================================
第三个类  类名：OtherAdapter 
============================================================
package com.test.drag;

import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.TextView;

import java.util.List;

/**
 * Created by fuweiwei on 2016/1/8.
 */
public class OtherAdapter extends BaseAdapter {

    private Context context;
    public List<String> channelList;
    private TextView item_text;
    /** 是否可见 在移动动画完毕之前不可见，动画完毕后可见*/
    boolean isVisible = true;
    /** 要删除的position */
    public int remove_position = -1;
    /** 是否是用户频道 */
    private boolean isUser = false;

    public OtherAdapter(Context context, List<String> channelList ,boolean isUser) {
        this.context = context;
        this.channelList = channelList;
        this.isUser = isUser;
    }

    @Override
    public int getCount() {
        return channelList == null ? 0 : channelList.size();
    }

    @Override
    public String getItem(int position) {
        if (channelList != null && channelList.size() != 0) {
            return channelList.get(position);
        }
        return null;
    }

    @Override
    public long getItemId(int position) {
        return position;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        View view = LayoutInflater.from(context).inflate(R.layout.adapter_mygridview_item, null);
        item_text = (TextView) view.findViewById(R.id.text_item);
        String channel = getItem(position);
        item_text.setText(channel);
        if(isUser){
            if ((position == 0) || (position == 1)){
                item_text.setEnabled(false);
            }
        }
        if (!isVisible && (position == -1 + channelList.size())){
            item_text.setText("");
            item_text.setSelected(true);
            item_text.setEnabled(true);
        }
        if(remove_position == position){
            item_text.setText("");
        }
        return view;
    }

    /** 获取频道列表 */
    public List<String> getChannnelLst() {
        return channelList;
    }

    /** 添加频道列表 */
    public void addItem(String channel) {
        channelList.add(channel);
        notifyDataSetChanged();
    }

    /** 设置删除的position */
    public void setRemove(int position) {
        remove_position = position;
        notifyDataSetChanged();
        // notifyDataSetChanged();
    }

    /** 删除频道列表 */
    public void remove() {
        channelList.remove(remove_position);
        remove_position = -1;
        notifyDataSetChanged();
    }
    /** 设置频道列表 */
    public void setListDate(List<String> list) {
        channelList = list;
    }

    /** 获取是否可见 */
    public boolean isVisible() {
        return isVisible;
    }

    /** 设置是否可见 */
    public void setVisible(boolean visible) {
        isVisible = visible;
    }

}
===================================================
drawable下的文件
<?xml version="1.0" encoding="utf-8"?>
<selector
  xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:state_enabled="true" android:state_selected="true">
        <layer-list>
            <item>
                <shape>
                    <stroke android:width="1.0dip" android:color="@color/subscribe_item_drag_stroke" android:dashWidth="4.0dip" android:dashGap="2.0dip" />
                    <solid android:color="@color/subscribe_item_drag_bg" />
                </shape>
            </item>
        </layer-list>
    </item>
    <item android:state_selected="true">
        <shape>
            <stroke android:width="1.0dip" android:color="@color/subscribe_item_selected_stroke" />
            <solid android:color="@color/subscribe_item_selected_bg" />
        </shape>
    </item>
    <item android:state_enabled="false">
        <shape>
            <stroke android:width="0.5dip" android:color="@color/subscribe_item_disabled_stroke" />
            <solid android:color="@color/subscribe_item_disabled_bg" />
        </shape>
    </item>
    <item android:state_pressed="true">
        <shape>
            <stroke android:width="0.5dip" android:color="@color/subscribe_item_pressed_stroke" />
            <solid android:color="@color/subscribe_item_pressed_bg" />
        </shape>
    </item>
    <item>
        <shape>
            <stroke android:width="0.5dip" android:color="@color/subscribe_item_normal_stroke" />
            <solid android:color="@color/subscribe_item_normal_bg" />
        </shape>
    </item>
</selector>
 ====================================================================
我的频道MyGridView
============================================================================
package com.test.drag.view;

import android.content.Context;
import android.util.AttributeSet;
import android.widget.GridView;

/**
 * Created by fuweiwei on 2016/1/8.
 */
public class MyGridView extends GridView {
    public MyGridView(Context paramContext, AttributeSet paramAttributeSet) {
        super(paramContext, paramAttributeSet);
    }

    @Override
    public void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
        int expandSpec = MeasureSpec.makeMeasureSpec(Integer.MAX_VALUE >> 2,
                MeasureSpec.AT_MOST);
        super.onMeasure(widthMeasureSpec, expandSpec);
    }
}
==============================================================
更多的频道view
=================================================================
package com.test.drag.view;

import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.PixelFormat;
import android.os.Vibrator;
import android.util.AttributeSet;
import android.util.Log;
import android.view.Gravity;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewGroup;
import android.view.WindowManager;
import android.view.animation.Animation;
import android.view.animation.TranslateAnimation;
import android.widget.AdapterView;
import android.widget.GridView;
import android.widget.ImageView;
import android.widget.TextView;

import com.test.drag.DragAdapter;
import com.test.drag.R;

/**
*作者：张金玲
*编辑日期：2017/9/20
*更改日期：2017/9/20

*/
public class DragGridView extends GridView{
    /** 点击时候的X位置 */
    public int downX;
    /** 点击时候的Y位置 */
    public int downY;
    /** 点击时候对应整个界面的X位置 */
    public int windowX;
    /** 点击时候对应整个界面的Y位置 */
    public int windowY;
    /** VIEW相对自己的X */
    private int win_view_x;
    /**VIEW相对自己的Y*/
    private int win_view_y;
    /** 长按时候对应postion */
    public int dragPosition;
    /** Up后对应的ITEM的Position */
    private int dropPosition;
    /** 开始拖动的ITEM的Position*/
    private int startPosition;
    /** item高 */
    private int itemHeight;
    /** item宽 */
    private int itemWidth;
    /** 拖动的时候对应ITEM的VIEW */
    private View dragImageView = null;
    /** 长按的时候ITEM的VIEW*/
    private ViewGroup dragItemView = null;
    /** WindowManager管理器 */
    private WindowManager windowManager = null;
    /** */
    private WindowManager.LayoutParams windowParams = null;
    /** item总量*/
    private int itemTotalCount;
    /** 一行的ITEM数量*/
    private int nColumns = 4;
    /** 行数 */
    private int nRows;
    /** 剩余部分 */
    private int Remainder;
    /** 是否在移动 */
    private boolean isMoving = false;
    /** */
    private int holdPosition;
    /** 拖动的时候放大的倍数 */
    private double dragScale = 1.2D;
    /** 震动器  */
    private Vibrator mVibrator;
    /** 每个ITEM之间的水平间距 */
    private int mHorizontalSpacing = 15;
    /** 每个ITEM之间的竖直间距 */
    private int mVerticalSpacing = 15;
    /** 移动时候最后个动画的ID */
    private String LastAnimationID;
    public DragGridView(Context context) {
        super(context);
        init(context);
    }

    public DragGridView(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
        init(context);
    }

    public DragGridView(Context context, AttributeSet attrs) {
        super(context, attrs);
        init(context);
    }
    /**
     * dip转为 px
     */
    public  int dip2px(Context context, float dipValue) {
        final float scale = context.getResources().getDisplayMetrics().density;
        return (int) (dipValue * scale + 0.5f);
    }

    public void init(Context context){
        mVibrator = (Vibrator) context.getSystemService(Context.VIBRATOR_SERVICE);
        //将布局文件中设置的间距dip转为px
        mHorizontalSpacing = dip2px(context, mHorizontalSpacing);
    }
    /** 在ScrollView内，所以要进行计算高度 */
    @Override
    public void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
        int expandSpec = MeasureSpec.makeMeasureSpec(Integer.MAX_VALUE >> 2,MeasureSpec.AT_MOST);
        super.onMeasure(widthMeasureSpec, expandSpec);
    }
    @Override
    public boolean dispatchTouchEvent(MotionEvent ev) {
        if (ev.getAction() == MotionEvent.ACTION_DOWN) {
            downX = (int) ev.getX();
            downY = (int) ev.getY();
            windowX = (int) ev.getX();
            windowY = (int) ev.getY();
            setOnItemClickListener(ev);
        }
        return super.dispatchTouchEvent(ev);
    }
    /** 停止拖动 ，释放并初始化 */
    private void stopDrag() {
        if (dragImageView != null) {
            windowManager.removeView(dragImageView);
            dragImageView = null;
        }
    }

    /** 在拖动的情况更新View的位置 */
    private void onDrag(int x, int y , int rawx , int rawy) {
        if (dragImageView != null) {
            windowParams.alpha = 0.6f;
            windowParams.x = rawx - win_view_x;
            windowParams.y = rawy - win_view_y;
            windowManager.updateViewLayout(dragImageView, windowParams);
        }
    }

    /**
     *创建窗口对象、添加我们要移动的View
     * @param dragBitmap
     * @param x
     * @param y
     */
    public void startDrag(Bitmap dragBitmap, int x, int y) {
        stopDrag();
        windowParams = new WindowManager.LayoutParams();// 获取WINDOW界面的
        //Gravity.TOP|Gravity.LEFT;这个必须加
        windowParams.gravity = Gravity.TOP | Gravity.LEFT;
        //得到要移动的View左上角相对于屏幕的坐标
        windowParams.x = x - win_view_x;
        windowParams.y = y  - win_view_y;
        //设置拖拽item的宽和高
        windowParams.width = (int) (dragScale * dragBitmap.getWidth());// 放大dragScale倍，可以设置拖动后的倍数
        windowParams.height = (int) (dragScale * dragBitmap.getHeight());// 放大dragScale倍，可以设置拖动后的倍数
        this.windowParams.flags = WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE
                | WindowManager.LayoutParams.FLAG_NOT_TOUCHABLE
                | WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON
                | WindowManager.LayoutParams.FLAG_LAYOUT_IN_SCREEN;
        this.windowParams.format = PixelFormat.TRANSLUCENT;
        this.windowParams.windowAnimations = 0;
        ImageView iv = new ImageView(getContext());
        iv.setImageBitmap(dragBitmap);
        windowManager = (WindowManager) getContext().getSystemService(Context.WINDOW_SERVICE);// "window"
        windowManager.addView(iv, windowParams);
        dragImageView = iv;
    }
    /** 隐藏 放下 的ITEM*/
    private void hideDropItem() {
        ((DragAdapter) getAdapter()).setShowDropItem(false);
    }

    /** 在松手下放的情况，更新界面 */
    private void onDrop(int x, int y) {
        // 根据拖动到的x,y坐标获取拖动位置下方的ITEM对应的POSTION
        int tempPostion = pointToPosition(x, y);
//    if (tempPostion != AdapterView.INVALID_POSITION) {
        dropPosition = tempPostion;
        DragAdapter mDragAdapter = (DragAdapter) getAdapter();
        //显示刚拖动的ITEM
        mDragAdapter.setShowDropItem(true);
        //刷新适配器，让对应的ITEM显示
        mDragAdapter.notifyDataSetChanged();
//    }
    }
    /**
     * 长按点击监听
     * @param ev
     */
    public void setOnItemClickListener(final MotionEvent ev) {
        setOnItemLongClickListener(new OnItemLongClickListener() {

            @Override
            public boolean onItemLongClick(AdapterView<?> parent, View view, int position, long id) {
                int x = (int) ev.getX();// 长按事件的X位置
                int y = (int) ev.getY();// 长按事件的y位置
                startPosition = position;// 第一次点击的postion
                dragPosition = position;
                if (startPosition <= 1) {//前2个默认不点击、可以设置
                    return false;
                }
                ViewGroup dragViewGroup = (ViewGroup) getChildAt(dragPosition - getFirstVisiblePosition());
                TextView dragTextView = (TextView)dragViewGroup.findViewById(R.id.text_item);
                dragTextView.setSelected(true);
                dragTextView.setEnabled(false);
                itemHeight = dragViewGroup.getHeight();
                itemWidth = dragViewGroup.getWidth();
                itemTotalCount = DragGridView.this.getCount();
                // 如果特殊的这个不等于拖动的那个,并且不等于-1
                if (dragPosition != AdapterView.INVALID_POSITION) {
                    // 释放的资源使用的绘图缓存。如果你调用buildDrawingCache()手动没有调用setDrawingCacheEnabled(真正的),你应该清理缓存使用这种方法。
                    win_view_x = windowX - dragViewGroup.getLeft();//VIEW相对自己的X，半斤
                    win_view_y = windowY - dragViewGroup.getTop();//VIEW相对自己的y，半斤
                    dragItemView = dragViewGroup;
                    dragViewGroup.destroyDrawingCache();
                    dragViewGroup.setDrawingCacheEnabled(true);
                    Bitmap dragBitmap = Bitmap.createBitmap(dragViewGroup.getDrawingCache());
                    mVibrator.vibrate(50);//设置震动时间
                    startDrag(dragBitmap, (int)ev.getRawX(),  (int)ev.getRawY());
                    hideDropItem();
                    dragViewGroup.setVisibility(View.INVISIBLE);
                    isMoving = false;
                    return true;
                }
                return false;
            }
        });
    }
    @Override
    public boolean onTouchEvent(MotionEvent ev) {
        if (dragImageView != null && dragPosition != AdapterView.INVALID_POSITION) {
            // 移动时候的对应x,y位置
            int x = (int) ev.getX();
            int y = (int) ev.getY();
            switch (ev.getAction()) {
                case MotionEvent.ACTION_DOWN:
                    downX = (int) ev.getX();
                    windowX = (int) ev.getX();
                    downY = (int) ev.getY();
                    windowY = (int) ev.getY();
                    break;
                case MotionEvent.ACTION_MOVE:
                    onDrag(x, y ,(int) ev.getRawX() , (int) ev.getRawY());
                    if (!isMoving){
                        OnMove(x, y);
                    }
                    if (pointToPosition(x, y) != AdapterView.INVALID_POSITION){
                        break;
                    }
                    break;
                case MotionEvent.ACTION_UP:
                    stopDrag();
                    onDrop(x, y);
                    requestDisallowInterceptTouchEvent(false);
                    break;

                default:
                    break;
            }
        }
        return super.onTouchEvent(ev);
    }
    /** 移动的时候触发，移动所有改变的Item*/
    public void OnMove(int x, int y) {
        // 拖动的VIEW下方的POSTION
        int dPosition = pointToPosition(x, y);
        // 判断下方的POSTION是否是最开始2个不能拖动的
        if (dPosition > 1) {
            if ((dPosition == -1) || (dPosition == dragPosition)){
                return;
            }
            dropPosition = dPosition;
            if (dragPosition != startPosition){
                dragPosition = startPosition;
            }
            int movecount;
            //拖动的=开始拖的，并且 拖动的 不等于放下的
            if ((dragPosition == startPosition) || (dragPosition != dropPosition)){
                //移需要移动的动ITEM数量
                movecount = dropPosition - dragPosition;
            }else{
                //移需要移动的动ITEM数量为0
                movecount = 0;
            }
            if(movecount == 0){
                return;
            }
            int movecount_abs = Math.abs(movecount);
            if (dPosition != dragPosition) {
                //dragGroup设置为不可见
                ViewGroup dragGroup = (ViewGroup) getChildAt(dragPosition);
                dragGroup.setVisibility(View.INVISIBLE);
                float to_x = 1;//移动的X偏移量
                float to_y;// 移动的Y偏移量
                //x_vlaue移动的距离百分比（相对于自己长度的百分比）
                float x_vlaue = ((float) mHorizontalSpacing / (float) itemWidth) + 1.0f;
                //y_vlaue移动的距离百分比（相对于自己宽度的百分比）
                float y_vlaue = ((float) mVerticalSpacing / (float) itemHeight) + 1.0f;
                Log.d("x_vlaue", "x_vlaue = " + x_vlaue);
                for (int i = 0; i < movecount_abs; i++) {
                    to_x = x_vlaue;
                    to_y = y_vlaue;
                    //向右
                    if (movecount > 0) {
                        // 判断是不是同一行的
                        holdPosition = dragPosition + i + 1;
                        if (dragPosition / nColumns == holdPosition / nColumns) {
                            to_x = - x_vlaue;
                            to_y = 0;
                        } else if (holdPosition % 4 == 0) {
                            to_x = 3 * x_vlaue;
                            to_y = - y_vlaue;
                        } else {
                            to_x = - x_vlaue;
                            to_y = 0;
                        }
                    }else{
                        //向左,下移到上，右移到左
                        holdPosition = dragPosition - i - 1;
                        if (dragPosition / nColumns == holdPosition / nColumns) {
                            to_x = x_vlaue;
                            to_y = 0;
                        } else if((holdPosition + 1) % 4 == 0){
                            to_x = -3 * x_vlaue;
                            to_y = y_vlaue;
                        }else{
                            to_x = x_vlaue;
                            to_y = 0;
                        }
                    }
                    ViewGroup moveViewGroup = (ViewGroup) getChildAt(holdPosition);
                    Animation moveAnimation = getMoveAnimation(to_x, to_y);
                    moveViewGroup.startAnimation(moveAnimation);
                    //如果是最后一个移动的，那么设置他的最后个动画ID为LastAnimationID
                    if (holdPosition == dropPosition) {
                        LastAnimationID = moveAnimation.toString();
                    }
                    moveAnimation.setAnimationListener(new Animation.AnimationListener() {

                        @Override
                        public void onAnimationStart(Animation animation) {
                            isMoving = true;
                        }

                        @Override
                        public void onAnimationRepeat(Animation animation) {

                        }

                        @Override
                        public void onAnimationEnd(Animation animation) {
                            // 如果为最后个动画结束，那执行下面的方法
                            if (animation.toString().equalsIgnoreCase(LastAnimationID)) {
                                DragAdapter mDragAdapter = (DragAdapter) getAdapter();
                                mDragAdapter.exchange(startPosition,dropPosition);
                                startPosition = dropPosition;
                                dragPosition = dropPosition;
                                isMoving = false;
                            }
                        }
                    });
                }
            }
        }
    }
    /** 获取移动的动画 */
    public Animation getMoveAnimation(float toXValue, float toYValue) {
        TranslateAnimation mTranslateAnimation = new TranslateAnimation(
                Animation.RELATIVE_TO_SELF, 0.0F,
                Animation.RELATIVE_TO_SELF,toXValue,
                Animation.RELATIVE_TO_SELF, 0.0F,
                Animation.RELATIVE_TO_SELF, toYValue);// 当前位置移动到指定位置
        mTranslateAnimation.setFillAfter(true);// 设置一个动画效果执行完毕后，View对象保留在终止的位置。
        mTranslateAnimation.setDuration(300L);
        return mTranslateAnimation;
    }
}