Swipe

To enable drag and swipe functionality, you can implement the ItemSwipe interface for your data model:

data class SwipeModel(override var itemOrientationSwipe: Int = ItemOrientation.ALL) : ItemSwipe

Note that if your data model is deserialized using Gson, it will remove all the field initialization values.

To solve this, you can override the accessor function to always return the desired value:

class SwipeModel() : ItemDrag {
    override var itemOrientationSwipe: Int = 0
        get() = ItemOrientation.ALL // Always return this value
}

ItemOrientation

This class represents the configurable drag directions.

Field	Description
ALL	All directions
VERTICAL	Vertical direction
HORIZONTAL	Horizontal direction
LEFT	Left direction
RIGHT	Right direction
UP	Up direction
DOWN	Down direction
NONE	Disabled

Custom Swipe

If you want to extend ItemTouchHelper, you can assign a value to the itemTouchHelper variable in the BindingAdapter:

rv.linear().setup {
  addType<SwipeModel>(R.layout.item)

  itemTouchHelper = ItemTouchHelper(object : DefaultItemTouchCallback(this) {
    // Override functions here
    override fun onSwiped(viewHolder: RecyclerView.ViewHolder, direction: Int) {
        super.onSwiped(viewHolder, direction)
        // Callback after swiping, you can synchronize with the server here

        Log.d("Position", "layoutPosition = ${viewHolder.layoutPosition}")
        Log.d("Data", "SwipeModel = ${(viewHolder as BindingAdapter.BindingViewHolder).getModel<SwipeModel>()}")
    }
  })

}.models = data

You can customize the view that will move during the swipe by adding the swipe tag to the view. This will allow you to show the view behind the background:

<RelativeLayout
        android:layout_width="wrap_content"
        android:layout_height="80dp"
        android:orientation="horizontal"
        android:tag="swipe"/>

Swipe Buttons

If you want to implement swipe buttons similar to the ones in the QQ app, it is recommended to use a custom item view instead of implementing it within the list.

In this case, you can use a third-party library called SwipeToActionLayout.

Note that this interaction effect belongs to the official iOS effect, and it is not recommended to replicate it on Android.