滑动以关闭RecyclerView [关闭]

我曾经使用过SwipeToDismiss库，但现在我正尝试迁移到RecyclerView，事情并不是那么明显，您知道此lib有任何替换吗？有什么想法如何从头开始实施它吗？

从v22.2.0开始，Android支持团队提供了一个ItemTouchHelper类，该类使轻扫到关闭和拖放变得非常简单。它可能不像那里的某些库那样功能齐全，但是它直接来自Android团队。

• 更新您的build.gradle以导入v22.2。+的RecyclerView库

  compile 'com.android.support:recyclerview-v7:22.2.+'

• 使用适当的SimpleCallback实例化ItemTouchHelper

  ItemTouchHelper.SimpleCallback simpleItemTouchCallback = new ItemTouchHelper.SimpleCallback(0, ItemTouchHelper.LEFT | ItemTouchHelper.RIGHT) {
      [...]
      @Override
      public void onSwiped(RecyclerView.ViewHolder viewHolder, int swipeDir) {
          //Remove swiped item from list and notify the RecyclerView
      }
  };
  
  ItemTouchHelper itemTouchHelper = new ItemTouchHelper(simpleItemTouchCallback);
  

  **请注意，SimpleCallback接受要启用拖放的方向以及要启用滑动的方向。

• 附加到您的RecyclerView

  itemTouchHelper.attachToRecyclerView(recyclerView);

 ItemTouchHelper.SimpleCallback simpleCallback = new ItemTouchHelper.SimpleCallback(0, ItemTouchHelper.LEFT) {
        @Override
        public boolean onMove(RecyclerView recyclerView, RecyclerView.ViewHolder viewHolder, RecyclerView.ViewHolder target) {
            return false;
        }

        @Override
        public void onSwiped(final RecyclerView.ViewHolder viewHolder, int direction) {
            final int position = viewHolder.getAdapterPosition(); //get position which is swipe

            if (direction == ItemTouchHelper.LEFT) {    //if swipe left

                AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this); //alert for confirm to delete
                builder.setMessage("Are you sure to delete?");    //set message

                builder.setPositiveButton("REMOVE", new DialogInterface.OnClickListener() { //when click on DELETE
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        adapter.notifyItemRemoved(position);    //item removed from recylcerview
                        sqldatabase.execSQL("delete from " + TABLE_NAME + " where _id='" + (position + 1) + "'"); //query for delete
                        list.remove(position);  //then remove item

                        return;
                    }
                }).setNegativeButton("CANCEL", new DialogInterface.OnClickListener() {  //not removing items if cancel is done
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        adapter.notifyItemRemoved(position + 1);    //notifies the RecyclerView Adapter that data in adapter has been removed at a particular position.
                        adapter.notifyItemRangeChanged(position, adapter.getItemCount());   //notifies the RecyclerView Adapter that positions of element in adapter has been changed from position(removed element index to end of list), please update it.
                        return;
                    }
                }).show();  //show alert dialog
            }
        }
    };
    ItemTouchHelper itemTouchHelper = new ItemTouchHelper(simpleCallback);
    itemTouchHelper.attachToRecyclerView(recyclerView); //set swipe to recylcerview

在代码中，如果用户向左滑动，则会显示AlertDialog，如果用户选择REMOVE，则将从数据库中删除该项目，并刷新recyclerview；如果用户选择CANCEL，则recyclerview保持原样。

也许您可以尝试以下库：

https://github.com/daimajia/AndroidSwipeLayout

更新：我刚刚找到了另一个可以与RecyclerView一起使用的好的库：

https://github.com/hudomju/android-swipe-to-dismiss-undo

该库可能会有所帮助。您可以undo在OnDissmiss使用中实现supertoast

我写了SwipeToDeleteRV库，该库支持回收者视图上的“刷卡删除删除”功能。它基于ItemTouchHelper，非常易于使用。

希望对面临相同问题的人有所帮助。

例如，您可以按常规在XML布局中定义回收者视图，以及一些可选属性：

...
xmlns:stdrv="http://schemas.android.com/apk/res-auto"
...
<io.huannguyen.swipetodeleterv.STDRecyclerView
android:id="@+id/recycler_view"
android:layout_width="match_parent"
android:layout_height="match_parent"
stdrv:border_color="@android:color/darker_gray" // specify things like border color, border width, etc.
stdrv:delete_view_background="#cccccc"
stdrv:delete_icon="@drawable/ic_archive"
stdrv:delete_icon_height="24dp"
stdrv:delete_icon_width="24dp"
stdrv:left_delete_icon_margin="32dp"
stdrv:delete_message="@string/delete_message"
stdrv:right_delete_icon_margin="32dp"
stdrv:delete_icon_color="#000000"
stdrv:has_border="true"/>

所有的stdrv属性都是可选的。如果未指定，则使用默认值。

然后创建一个子类STDAdapter的适配器，确保您调用超类构造函数。像这样：

public class SampleAdapter extends STDAdapter<String> {
public SampleAdapter(List<String> versionList) {
    super(versionList);
}

}

接下来，请确保调用该setupSwipeToDelete方法以设置“滑动删除”功能。

mRecyclerView.setupSwipeToDelete(your_adapter_instance, swipe_directions);

swipe_directions 是您允许刷卡物品的方向。

例：

// Get your recycler view from the XML layout
mRecyclerView = (STDRecyclerView) findViewById(R.id.recycler_view);
LayoutManager layoutManager = new LinearLayoutManager(getApplicationContext());
mRecyclerView.setLayoutManager(layoutManager);
mAdapter = new SampleAdapter(versions);
// allow swiping in both directions (left-to-right and right-to-left)
mRecyclerView.setupSwipeToDelete(mAdapter, ItemTouchHelper.LEFT|ItemTouchHelper.RIGHT);

而已！有关更高级的设置（即，为不同的项目设置不同的删除消息，临时和永久删除项目，...），请参阅项目自述页面。