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117.Android 简单的拖拽列表+防止越界拖动(BaseRecyclerViewAdapterHelper) 两种方式实现_android 拖动的list

作者：盐析白兔 | 2024-03-22 09:13:16

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android 拖动的list

 //一.第一种方式 通过BaseItemDraggableAdapter类和其提供的的拖拽监听实现：

//1.第一步 导入依赖库和权限：

//依赖库：

  1. //RecyclerView
  2. implementation 'com.android.support:recyclerview-v7:28.0.0'
  3.  
  4. //RecyclerAdapter
  5. implementation 'com.github.CymChad:BaseRecyclerViewAdapterHelper:2.9.28'

//用到的权限：

  1. <!--振动-->
  2. <uses-permission android:name="android.permission.VIBRATE" />

 //2.第二步 新建ItemDraggableActivity页面：

//manifest注册：

  1. <activity
  2.     android:name=".phone.activity.ItemDraggableActivity"
  3.     android:launchMode="singleTop"
  4.     android:screenOrientation="portrait"
  5.     android:windowSoftInputMode="stateHidden"
  6.     tools:ignore="LockedOrientationActivity" />

//activity代码：

  1. /**
  2.  * @author CJF
  3.  */
  4. public class ItemDraggableActivity extends AppCompatActivity implements BaseQuickAdapter.OnItemChildClickListener, View.OnClickListener {
  5.     private final GridLayoutManager manager = new GridLayoutManager(this, 3);
  6.     private final ItemDraggableAdapter adapter = new ItemDraggableAdapter(R.layout.item_draggable_item, new ArrayList<>());
  7.  
  8.     /**
  9.      * 震动时长(毫秒)
  10.      */
  11.     private final int milliseconds = 50;
  12.     private Vibrator vibrator;
  13.     private RecyclerView mTreeListRecy;
  14.     private TextView mEdit;
  15.  
  16.     @Override
  17.     protected void onCreate(@Nullable Bundle savedInstanceState) {
  18.         super.onCreate(savedInstanceState);
  19.         setContentView(R.layout.activity_tree_list);
  20.  
  21.         //点击音效
  22.         vibrator = (Vibrator) getSystemService(Context.VIBRATOR_SERVICE);
  23.         mTreeListRecy = findViewById(R.id.mTreeListRecy);
  24.         mEdit = findViewById(R.id.mEdit);
  25.         mEdit.setOnClickListener(this);
  26.  
  27.         mTreeListRecy.setLayoutManager(manager);
  28.         mTreeListRecy.setAdapter(adapter);
  29.  
  30.         DragAndSwipeCallback itemDragAndSwipeCallback = new DragAndSwipeCallback(adapter);
  31.         ItemTouchHelper itemTouchHelper = new ItemTouchHelper(itemDragAndSwipeCallback);
  32.         itemTouchHelper.attachToRecyclerView(mTreeListRecy);
  33.         //可以不用设置,可以拖拽的方向，默认上下左右
  34.         itemDragAndSwipeCallback.setDragMoveFlags(ItemTouchHelper.UP | ItemTouchHelper.DOWN | ItemTouchHelper.LEFT | ItemTouchHelper.RIGHT);
  35.  
  36. //         开启拖拽 设置可拖拽item的根布局id
  37.         adapter.enableDragItem(itemTouchHelper, R.id.mItemDraggableItemLin, true);
  38.         adapter.setOnItemDragListener(onItemDragListener);
  39.  
  40.  
  41.         // 开启滑动删除
  42. //        adapter.enableSwipeItem();
  43. //        adapter.setOnItemSwipeListener(onItemSwipeListener);
  44.  
  45.         adapter.setOnItemChildClickListener(this);
  46.  
  47.         List<ItemDraggableBean> list = new ArrayList<>();
  48.         for (int i = 0; i < 10; i++) {
  49.             ItemDraggableBean bean = new ItemDraggableBean();
  50.             bean.setName("数据" + i);
  51.             list.add(bean);
  52.         }
  53.         adapter.addData(list);
  54.     }
  55.  
  56.     /**
  57.      * 拖拽监听
  58.      */
  59.     private OnItemDragListener onItemDragListener = new OnItemDragListener() {
  60.         @Override
  61.         public void onItemDragStart(RecyclerView.ViewHolder viewHolder, int pos) {
  62.             Log.e("TAG1231", "onItemDragStart" + "你在拖拽第" + (pos + 1) + "个位置的item哦！");
  63.             //震动
  64.             if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
  65.                 vibrator.vibrate(VibrationEffect.createOneShot(milliseconds, VibrationEffect.DEFAULT_AMPLITUDE));
  66.             } else {
  67.                 vibrator.vibrate(milliseconds);
  68.             }
  69.  
  70.             //按住变大
  71.             viewHolder.itemView.setScaleX(1.2f);
  72.             viewHolder.itemView.setScaleY(1.2f);
  73.             viewHolder.itemView.setAlpha(0.5f);
  74.  
  75.             //改变数据状态
  76.             ItemDraggableBean draggableBean = adapter.getData().get(pos);
  77.             if (!draggableBean.isShow()) {
  78.                 List<ItemDraggableBean> data = adapter.getData();
  79.                 for (ItemDraggableBean bean : data) {
  80.                     bean.setShow(true);
  81.                 }
  82.  
  83.                 //循环遍历出所有的item布局 并显示图片
  84.                 //注意不可以直接使用 adapter.notifyDataSetChanged();数据刷新会导致直接调用onItemDragEnd()方法
  85.                 for (int i = 0; i < mTreeListRecy.getChildCount(); i++) {
  86.                     View childAt = mTreeListRecy.getChildAt(i);
  87.                     TextView textView = childAt.findViewById(R.id.mItemDraggableItemText);
  88.                     View view = childAt.findViewById(R.id.mItemDraggableItemImg);
  89.                     view.setVisibility(View.VISIBLE);
  90.                     Log.e("TAG1231", "textView:" + textView.getText().toString());
  91.                 }
  92.  
  93.                 mEdit.setText("完成");
  94.             }
  95.  
  96.         }
  97.  
  98.         @Override
  99.         public void onItemDragMoving(RecyclerView.ViewHolder source, int from, RecyclerView.ViewHolder target, int to) {
  100.             Log.e("TAG1231", "onItemDragMoving");
  101.         }
  102.  
  103.         @Override
  104.         public void onItemDragEnd(RecyclerView.ViewHolder viewHolder, int pos) {
  105.             Log.e("TAG1231", "onItemDragEnd" + "拖拽到了第" + (pos + 1) + "个位置哦！");
  106.             //变回原来大小
  107.             viewHolder.itemView.setScaleX(1.0f);
  108.             viewHolder.itemView.setScaleY(1.0f);
  109.             viewHolder.itemView.setAlpha(1.0f);
  110.         }
  111.     };
  112.  
  113.     OnItemSwipeListener onItemSwipeListener = new OnItemSwipeListener() {
  114.         @Override
  115.         public void onItemSwipeStart(RecyclerView.ViewHolder viewHolder, int pos) {
  116.             ToastUtil.getInstance().showToast("继续向左滑动即可删除第" + (pos + 1) + "个位置的item");
  117.         }
  118.  
  119.         @Override
  120.         public void clearView(RecyclerView.ViewHolder viewHolder, int pos) {
  121.  
  122.         }
  123.  
  124.         @Override
  125.         public void onItemSwiped(RecyclerView.ViewHolder viewHolder, int pos) {
  126.             ToastUtil.getInstance().showToast("删除了第" + (pos + 1) + "个位置的item哦");
  127.         }
  128.  
  129.         @Override
  130.         public void onItemSwipeMoving(Canvas canvas, RecyclerView.ViewHolder viewHolder, float dX, float dY, boolean isCurrentlyActive) {
  131.  
  132.         }
  133.     };
  134.  
  135.     @Override
  136.     public void onItemChildClick(BaseQuickAdapter adapter, View view, int position) {
  137.         adapter.remove(position);
  138.     }
  139.  
  140.     @Override
  141.     public void onClick(View v) {
  142.         switch (v.getId()) {
  143.             case R.id.mEdit:
  144.                 boolean isEdit = "编辑".equals(mEdit.getText().toString());
  145.                 List<ItemDraggableBean> data = adapter.getData();
  146.                 for (ItemDraggableBean bean : data) {
  147.                     bean.setShow(isEdit);
  148.                 }
  149.                 adapter.notifyDataSetChanged();
  150.                 mEdit.setText(isEdit ? "完成" : "编辑");
  151.                 break;
  152.             default:
  153.                 break;
  154.         }
  155.     }
  156.  
  157. }

//3.第三步 新建DragAndSwipeCallback类继承ItemDragAndSwipeCallback，重写onChildDraw 防止越界拖动：

  1. /**
  2.  * @author CJF
  3.  * 重写onChildDraw 防止越界拖动
  4.  */
  5. public class DragAndSwipeCallback extends ItemDragAndSwipeCallback {
  6.  
  7.     public DragAndSwipeCallback(BaseItemDraggableAdapter adapter) {
  8.         super(adapter);
  9.     }
  10.  
  11.     /**
  12.      * 重写onChildDraw 防止越界拖动
  13.      *
  14.      * @param c
  15.      * @param recyclerView
  16.      * @param viewHolder
  17.      * @param dX
  18.      * @param dY
  19.      * @param actionState
  20.      * @param isCurrentlyActive
  21.      */
  22.     @Override
  23.     public void onChildDraw(@NonNull Canvas c, @NonNull RecyclerView recyclerView, @NonNull RecyclerView.ViewHolder viewHolder, float dX, float dY, int actionState, boolean isCurrentlyActive) {
  24.         float topY = viewHolder.itemView.getTop() + dY;
  25.         float bottomY = topY + viewHolder.itemView.getHeight();
  26.  
  27.         float leftX = viewHolder.itemView.getLeft() + dX;
  28.         float rightX = leftX + viewHolder.itemView.getWidth();
  29.  
  30.         if (topY < 0) {
  31.             dY = 0;
  32.         } else if (bottomY > recyclerView.getHeight()) {
  33.             dY = recyclerView.getHeight() - viewHolder.itemView.getHeight() - viewHolder.itemView.getTop();
  34.         }
  35.  
  36.         if (leftX < 0) {
  37.             dX = viewHolder.itemView.getWidth() - viewHolder.itemView.getRight();
  38.         } else if (rightX > recyclerView.getWidth()) {
  39.             dX = recyclerView.getWidth() - viewHolder.itemView.getWidth() - viewHolder.itemView.getLeft();
  40.         }
  41.  
  42.         super.onChildDraw(c, recyclerView, viewHolder, dX, dY, actionState, isCurrentlyActive);
  43.     }
  44.  
  45. }

//4.第四步 新建ItemDraggableAdapter适配器类：

  1. /**
  2.  * @author CJF
  3.  */
  4. public class ItemDraggableAdapter extends BaseItemDraggableAdapter<ItemDraggableBean, BaseViewHolder> {
  5.  
  6.     public ItemDraggableAdapter(List<ItemDraggableBean> data) {
  7.         super(data);
  8.     }
  9.  
  10.     public ItemDraggableAdapter(int layoutResId, List<ItemDraggableBean> data) {
  11.         super(layoutResId, data);
  12.  
  13.     }
  14.  
  15.     @Override
  16.     protected void convert(BaseViewHolder helper, ItemDraggableBean item) {
  17.         helper.setText(R.id.mItemDraggableItemText, item.getName());
  18.         helper.setGone(R.id.mItemDraggableItemImg, item.isShow());
  19.         helper.addOnClickListener(R.id.mItemDraggableItemImg);
  20.     }
  21.  
  22. }

//5.第五步 新建ItemDraggableBean类：

  1. /**
  2.  * @author CJF
  3.  */
  4. public class ItemDraggableBean {
  5.     private String name;
  6.     private boolean isShow = false;
  7.  
  8.     public ItemDraggableBean() {
  9.     }
  10.  
  11.     public ItemDraggableBean(String name, boolean isShow) {
  12.         this.name = name;
  13.         this.isShow = isShow;
  14.     }
  15.  
  16.     public String getName() {
  17.         return name;
  18.     }
  19.  
  20.     public void setName(String name) {
  21.         this.name = name;
  22.     }
  23.  
  24.     public boolean isShow() {
  25.         return isShow;
  26.     }
  27.  
  28.     public void setShow(boolean show) {
  29.         isShow = show;
  30.     }
  31.  
  32. }

//6.第六步 各个xml布局文件以及svg图片文件：

//activity_tree_list:

  1. <?xml version="1.0" encoding="utf-8"?>
  2. <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
  3.     android:layout_width="match_parent"
  4.     android:layout_height="match_parent"
  5.     xmlns:app="http://schemas.android.com/apk/res-auto"
  6.     android:background="@color/color_white"
  7.     android:orientation="vertical">
  8.  
  9.     <TextView
  10.         android:id="@+id/mEdit"
  11.         android:background="@drawable/selector_common_item"
  12.         android:textColor="@color/colorAccent"
  13.         android:textStyle="bold"
  14.         android:textSize="18sp"
  15.         android:gravity="center"
  16.         android:text="编辑"
  17.         android:layout_width="match_parent"
  18.         android:layout_height="wrap_content"/>
  19.  
  20.     <android.support.v7.widget.RecyclerView
  21.         android:id="@+id/mTreeListRecy"
  22.         android:layout_width="match_parent"
  23.         android:layout_height="match_parent" />
  24.  
  25. </LinearLayout>

//item_draggable_item:

  1. <?xml version="1.0" encoding="utf-8"?>
  2. <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
  3.     android:layout_width="match_parent"
  4.     android:layout_height="wrap_content"
  5.     android:background="@drawable/bg_search"
  6.     android:layout_margin="@dimen/dp_5"
  7.     android:id="@+id/mItemDraggableItemLin"
  8.     android:orientation="horizontal">
  9.  
  10.     <TextView
  11.         android:id="@+id/mItemDraggableItemText"
  12.         android:layout_width="0dp"
  13.         android:layout_height="wrap_content"
  14.         android:layout_weight="1"
  15.         android:gravity="left|center_vertical"
  16.         android:minHeight="@dimen/dp_50"
  17.         android:padding="@dimen/dp_10"
  18.         android:text="text"
  19.         android:textColor="@color/black"
  20.         android:textSize="@dimen/sp_15" />
  21.  
  22.     <ImageView
  23.         android:scaleType="center"
  24.         android:id="@+id/mItemDraggableItemImg"
  25.         android:src="@drawable/crm_close"
  26.         android:layout_width="@dimen/dp_50"
  27.         android:layout_height="match_parent"/>
  28.  
  29. </LinearLayout>

//svg图片文件  crm_close：

  1. <vector xmlns:android="http://schemas.android.com/apk/res/android"
  2.         android:width="24dp"
  3.         android:height="24dp"
  4.         android:viewportWidth="24.0"
  5.         android:viewportHeight="24.0">
  6.     <path
  7.         android:fillColor="#FF000000"
  8.         android:pathData="M19,6.41L17.59,5 12,10.59 6.41,5 5,6.41 10.59,12 5,17.59 6.41,19 12,13.41 17.59,19 19,17.59 13.41,12z"/>
  9. </vector>

//二.第二种方式 通过继承ItemTouchHelper.Callback类重写几个方法实现：

//1.第一步 导入依赖库：

  1. //RecyclerView
  2. implementation 'com.android.support:recyclerview-v7:28.0.0'
  3.  
  4. //RecyclerAdapter
  5. implementation 'com.github.CymChad:BaseRecyclerViewAdapterHelper:2.9.28'

//2.第二步 新建ItemDraggableActivity页面：

//manifest注册：

  1. <activity
  2.     android:name=".phone.activity.ItemDraggableActivity"
  3.     android:launchMode="singleTop"
  4.     android:screenOrientation="portrait"
  5.     android:windowSoftInputMode="stateHidden"
  6.     tools:ignore="LockedOrientationActivity" />

//activity代码：

  1. /**
  2.  * @author CJF
  3.  */
  4. public class ItemDraggableActivity extends AppCompatActivity implements BaseQuickAdapter.OnItemChildClickListener, BaseQuickAdapter.OnItemLongClickListener {
  5.     private final GridLayoutManager manager = new GridLayoutManager(this, 3);
  6.     private final ItemDraggableAdapter adapter = new ItemDraggableAdapter(R.layout.item_draggable_item);
  7.  
  8.     private RecyclerView mTreeListRecy;
  9.  
  10.     @Override
  11.     protected void onCreate(@Nullable Bundle savedInstanceState) {
  12.         super.onCreate(savedInstanceState);
  13.         setContentView(R.layout.activity_tree_list);
  14.  
  15.         mTreeListRecy = findViewById(R.id.mTreeListRecy);
  16.  
  17.         mTreeListRecy.setLayoutManager(manager);
  18.         mTreeListRecy.setAdapter(adapter);
  19.  
  20.         adapter.setOnItemChildClickListener(this);
  21.         adapter.setOnItemLongClickListener(this);
  22.  
  23.         //列表上下左右拖拽滑动
  24.         AdapterTouchHelper adapterTouchHelper = new AdapterTouchHelper(mTreeListRecy, adapter);
  25.  
  26.  
  27.         List<ItemDraggableBean> list = new ArrayList<>();
  28.         for (int i = 0; i < 10; i++) {
  29.             ItemDraggableBean bean = new ItemDraggableBean();
  30.             bean.setName("数据" + i);
  31.             list.add(bean);
  32.         }
  33.         adapter.addData(list);
  34.  
  35.     }
  36.  
  37.  
  38.     @Override
  39.     public void onItemChildClick(BaseQuickAdapter adapter, View view, int position) {
  40.         adapter.remove(position);
  41.     }
  42.  
  43.     @Override
  44.     public boolean onItemLongClick(BaseQuickAdapter adapter, View view, int position) {
  45.         //改变数据状态
  46.         ItemDraggableBean draggableBean = (ItemDraggableBean) adapter.getData().get(position);
  47.         if (!draggableBean.isShow()) {
  48.             List<ItemDraggableBean> data = adapter.getData();
  49.             for (ItemDraggableBean bean : data) {
  50.                 bean.setShow(true);
  51.             }
  52.  
  53.             //循环遍历出所有的item布局 并显示图片
  54.             //注意不可以直接使用 adapter.notifyDataSetChanged();数据刷新会导致直接结束滑动
  55.             for (int i = 0; i < mTreeListRecy.getChildCount(); i++) {
  56.                 View childAt = mTreeListRecy.getChildAt(i);
  57.                 TextView textView = childAt.findViewById(R.id.mItemDraggableItemText);
  58.                 View mItemDraggableItemImg = childAt.findViewById(R.id.mItemDraggableItemImg);
  59.                 mItemDraggableItemImg.setVisibility(View.VISIBLE);
  60.                 Log.e("TAG1231", "textView:" + textView.getText().toString());
  61.             }
  62.  
  63.         }
  64.         return false;
  65.     }
  66.  
  67. }

//3.第三步 新建ItemDraggableAdapter适配器：

  1. /**
  2.  * @author CJF
  3.  */
  4. public class ItemDraggableAdapter extends BaseQuickAdapter<ItemDraggableBean, BaseViewHolder> {
  5.  
  6.     public ItemDraggableAdapter(int layoutResId) {
  7.         super(layoutResId);
  8.     }
  9.  
  10.     @Override
  11.     protected void convert(BaseViewHolder helper, ItemDraggableBean item) {
  12.         helper.setText(R.id.mItemDraggableItemText, item.getName());
  13.         helper.setGone(R.id.mItemDraggableItemImg, item.isShow());
  14.         helper.addOnClickListener(R.id.mItemDraggableItemImg);
  15.     }
  16.  
  17. }

//4.第四步 新建AdapterTouchHelper类继承ItemTouchHelper.Callback实现核心功能：

  1. /**
  2.  * @author CJF
  3.  * 列表上下左右拖拽滑动
  4.  */
  5. public class AdapterTouchHelper extends ItemTouchHelper.Callback {
  6.     private BaseQuickAdapter adapter;
  7.  
  8.     public AdapterTouchHelper(RecyclerView recyclerView, BaseQuickAdapter adapter) {
  9.         this.adapter = adapter;
  10.         //用Callback构造ItemtouchHelper
  11.         ItemTouchHelper touchHelper = new ItemTouchHelper(this);
  12.         //调用ItemTouchHelper的attachToRecyclerView方法建立联系
  13.         touchHelper.attachToRecyclerView(recyclerView);
  14.     }
  15.  
  16.     @Override
  17.     public int getMovementFlags(@NotNull RecyclerView recyclerView, @NotNull RecyclerView.ViewHolder viewHolder) {
  18.         //允许上下拖动
  19.         int dragFlags = ItemTouchHelper.UP | ItemTouchHelper.DOWN | ItemTouchHelper.LEFT | ItemTouchHelper.RIGHT;
  20.         return makeMovementFlags(dragFlags, 0);
  21.     }
  22.  
  23.     @Override
  24.     public boolean isLongPressDragEnabled() {
  25.         return true;
  26.     }
  27.  
  28.     /**
  29.      * Item进行上下移动从旧的位置到新的位置的时候会调用该方法
  30.      *
  31.      * @param recyclerView
  32.      * @param viewHolder   旧位置
  33.      * @param target       目标位置
  34.      * @return
  35.      */
  36.     @Override
  37.     public boolean onMove(@NotNull RecyclerView recyclerView, @NotNull RecyclerView.ViewHolder viewHolder, @NotNull RecyclerView.ViewHolder target) {
  38.         //交换位置
  39.         Collections.swap(adapter.getData(), viewHolder.getAdapterPosition(), target.getAdapterPosition());
  40.         adapter.notifyItemMoved(viewHolder.getAdapterPosition(), target.getAdapterPosition());
  41.         return true;
  42.     }
  43.  
  44.     /**
  45.      * Item左右移动达到条件时时，会调用该方法
  46.      *
  47.      * @param viewHolder
  48.      * @param direction
  49.      */
  50.     @Override
  51.     public void onSwiped(@NotNull RecyclerView.ViewHolder viewHolder, int direction) {
  52.  
  53.     }
  54.  
  55.     /**
  56.      * 重写onChildDraw 防止越界拖动
  57.      *
  58.      * @param c
  59.      * @param recyclerView
  60.      * @param viewHolder
  61.      * @param dX
  62.      * @param dY
  63.      * @param actionState
  64.      * @param isCurrentlyActive
  65.      */
  66.     @Override
  67.     public void onChildDraw(@NotNull Canvas c, @NotNull RecyclerView recyclerView, @NonNull RecyclerView.ViewHolder viewHolder, float dX, float dY, int actionState, boolean isCurrentlyActive) {
  68.         float topY = viewHolder.itemView.getTop() + dY;
  69.         float bottomY = topY + viewHolder.itemView.getHeight();
  70.  
  71.         float leftX = viewHolder.itemView.getLeft() + dX;
  72.         float rightX = leftX + viewHolder.itemView.getWidth();
  73.  
  74.         if (topY < 0) {
  75.             dY = 0;
  76.         } else if (bottomY > recyclerView.getHeight()) {
  77.             dY = recyclerView.getHeight() - viewHolder.itemView.getHeight() - viewHolder.itemView.getTop();
  78.         }
  79.  
  80.         if (leftX < 0) {
  81.             dX = viewHolder.itemView.getWidth() - viewHolder.itemView.getRight();
  82.         } else if (rightX > recyclerView.getWidth()) {
  83.             dX = recyclerView.getWidth() - viewHolder.itemView.getWidth() - viewHolder.itemView.getLeft();
  84.         }
  85.  
  86.         super.onChildDraw(c, recyclerView, viewHolder, dX, dY, actionState, isCurrentlyActive);
  87.     }
  88.  
  89.     @Override
  90.     public void onSelectedChanged(RecyclerView.ViewHolder viewHolder, int actionState) {
  91.         //开始按住滑动
  92.         if (actionState == ItemTouchHelper.ACTION_STATE_DRAG) {
  93.             //按住变大
  94.             viewHolder.itemView.setScaleX(1.2f);
  95.             viewHolder.itemView.setScaleY(1.2f);
  96.             viewHolder.itemView.setAlpha(0.5f);
  97.         }
  98.         super.onSelectedChanged(viewHolder, actionState);
  99.     }
  100.  
  101.     @Override
  102.     public void clearView(@NotNull RecyclerView recyclerView, @NotNull RecyclerView.ViewHolder viewHolder) {
  103.         super.clearView(recyclerView, viewHolder);
  104.  
  105.         //结束按住滑动 变回原来大小
  106.         viewHolder.itemView.setScaleX(1.0f);
  107.         viewHolder.itemView.setScaleY(1.0f);
  108.         viewHolder.itemView.setAlpha(1.0f);
  109.     }
  110.  
  111. }

//5.第五步 新建ItemDraggableBean类：

  1. /**
  2.  * @author CJF
  3.  */
  4. public class ItemDraggableBean {
  5.     private String name;
  6.     private boolean isShow = false;
  7.  
  8.     public ItemDraggableBean() {
  9.     }
  10.  
  11.     public ItemDraggableBean(String name, boolean isShow) {
  12.         this.name = name;
  13.         this.isShow = isShow;
  14.     }
  15.  
  16.     public String getName() {
  17.         return name;
  18.     }
  19.  
  20.     public void setName(String name) {
  21.         this.name = name;
  22.     }
  23.  
  24.     public boolean isShow() {
  25.         return isShow;
  26.     }
  27.  
  28.     public void setShow(boolean show) {
  29.         isShow = show;
  30.     }
  31.  
  32. }

//6.第六步 各个xml布局以及svg图片：

//activity_tree_list:

  1. <?xml version="1.0" encoding="utf-8"?>
  2. <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
  3.     android:layout_width="match_parent"
  4.     android:layout_height="match_parent"
  5.     xmlns:app="http://schemas.android.com/apk/res-auto"
  6.     android:background="@color/color_white"
  7.     android:orientation="vertical">
  8.  
  9.     <android.support.v7.widget.RecyclerView
  10.         android:id="@+id/mTreeListRecy"
  11.         android:layout_width="match_parent"
  12.         android:layout_height="match_parent" />
  13.  
  14. </LinearLayout>

//item_draggable_item:

  1. <?xml version="1.0" encoding="utf-8"?>
  2. <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
  3.     android:layout_width="match_parent"
  4.     android:layout_height="wrap_content"
  5.     android:background="@drawable/bg_search"
  6.     android:layout_margin="@dimen/dp_5"
  7.     android:id="@+id/mItemDraggableItemLin"
  8.     android:orientation="horizontal">
  9.  
  10.     <TextView
  11.         android:id="@+id/mItemDraggableItemText"
  12.         android:layout_width="0dp"
  13.         android:layout_height="wrap_content"
  14.         android:layout_weight="1"
  15.         android:gravity="left|center_vertical"
  16.         android:minHeight="@dimen/dp_50"
  17.         android:padding="@dimen/dp_10"
  18.         android:text="text"
  19.         android:textColor="@color/black"
  20.         android:textSize="@dimen/sp_15" />
  21.  
  22.     <ImageView
  23.         android:scaleType="center"
  24.         android:id="@+id/mItemDraggableItemImg"
  25.         android:src="@drawable/crm_close"
  26.         android:layout_width="@dimen/dp_50"
  27.         android:layout_height="match_parent"/>
  28.  
  29. </LinearLayout>

//svg图片 crm_close：

  1. <vector xmlns:android="http://schemas.android.com/apk/res/android"
  2.         android:width="24dp"
  3.         android:height="24dp"
  4.         android:viewportWidth="24.0"
  5.         android:viewportHeight="24.0">
  6.     <path
  7.         android:fillColor="#FF000000"
  8.         android:pathData="M19,6.41L17.59,5 12,10.59 6.41,5 5,6.41 10.59,12 5,17.59 6.41,19 12,13.41 17.59,19 19,17.59 13.41,12z"/>
  9. </vector>

//------------------------------------------------------END---------------------------------------------------------------

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