Android GridView 仿今日头条频道管理

package view;import ;
import ;
import ;
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.bawei.wangruixin20170920.DragAdapter;
import com.bawei.wangruixin20170920.R;/**
 * Created by fuweiwei on 2016/1/9.
 */
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 = Resources().getDisplayMetrics().density;return (int) (dipValue * scale + 0.5f);}public void init(Context context){mVibrator = (Vibrator) SystemService(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) {veView(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
        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 * Width());// 放大dragScale倍，可以设置拖动后的倍数
        windowParams.height = (int) (dragScale * Height());// 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
        //    }
    }/**
     * 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 = Height();itemWidth = Width();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 - Left();//VIEW相对自己的X，半斤
                    win_view_y = windowY - Top();//VIEW相对自己的y，半斤
                    dragItemView = dragViewGroup;dragViewGroup.destroyDrawingCache();dragViewGroup.setDrawingCacheEnabled(true);Bitmap dragBitmap = Bitmap.createBitmap(DrawingCache());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 = String();}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 (String().equalsIgnoreCase(LastAnimationID)) {DragAdapter mDragAdapter = (DragAdapter) getAdapter();hange(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;}
}

package view;import ;
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);}
}

package com.bawei.wangruixin20170920;import ;
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 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);ve(dragPostion);} else {channelList.add(dropPostion, dragItem);ve(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() {ve(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;}
}

package com.bawei.wangruixin20170920;import ;
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 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() {ve(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;}}

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns: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>

<?xml version="1.0" encoding="utf-8"?>
<resources><color name="colorPrimary">#3F51B5</color><color name="colorPrimaryDark">#303F9F</color><color name="colorAccent">#FF4081</color><item name="subscribe_item_text_color_normal" type="color">@color/default_text</item><color name="subscribe_item_text_color_pressed">#ffcc3131</color><color name="default_text">#ff454545</color><color name="subscribe_item_text_color_pressed_night">#ff303030</color><color name="subscribe_item_focused_stroke">#ffd9d9d9</color><color name="subscribe_item_drag_stroke">#ffd2d2d2</color><color name="subscribe_item_drag_bg">#fff5f5f5</color><color name="subscribe_item_drag_stroke_night">#ff464646</color><color name="subscribe_item_drag_bg_night">#ff252525</color><color name="subscribe_item_selected_bg">#ffffffff</color><color name="subscribe_item_selected_stroke">#ffcc3131</color><color name="subscribe_item_disabled_bg">#ffefefef</color><color name="subscribe_item_disabled_stroke">#ffd9d9d9</color><color name="subscribe_item_pressed_bg">#fff9f9f9</color><color name="subscribe_item_pressed_stroke">#ffcdcdcd</color><color name="subscribe_item_normal_bg">#fff5f5f5</color><color name="subscribe_item_normal_stroke">#ffcdcdcd</color><color name="subscribe_item_focused_bg_night">#ff252525</color><color name="subscribe_item_focused_stroke_night">#ff464646</color><color name="subscribe_item_selected_bg_night">#ff252525</color><color name="subscribe_item_selected_stroke_night">#ffbc494d</color><color name="subscribe_item_disabled_bg_night">#ff2b2b2b</color>
</resources>

<?xml version="1.0" encoding="utf-8"?>
<selector
  xmlns: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>

<uses-permission android:name="android.permission.VIBRATE"/>