Question

我已经为我的回收站视图创建了拖放，但是我想在单元格提取时禁用拖放选项（这是我视图中的标题）。如何使它们不可用于拖放功能？

拖放助手

class SimpleItemTouchHelperCallback(private val mAdapter: ItemTouchHelperAdapter) : ItemTouchHelper.Callback() {
    override fun isLongPressDragEnabled() = true

    override fun isItemViewSwipeEnabled() = true

    override fun onSwiped(viewHolder: RecyclerView.ViewHolder, direction: Int) {}

    override fun getMovementFlags(recyclerView: RecyclerView, viewHolder: RecyclerView.ViewHolder): Int {
        val dragFlags = ItemTouchHelper.UP or ItemTouchHelper.DOWN
        val swipeFlags = ItemTouchHelper.START or ItemTouchHelper.END

        return ItemTouchHelper.Callback.makeMovementFlags(dragFlags, swipeFlags)
    }

    override fun onMove(recyclerView: RecyclerView, viewHolder: RecyclerView.ViewHolder, target: RecyclerView.ViewHolder): Boolean {
        mAdapter.onItemMove(viewHolder.adapterPosition, target.adapterPosition)

        return true
    }
}

Recyclerview适配器

interface ItemTouchHelperAdapter {
    fun onItemMove(fromPosition: Int, toPosition: Int): Boolean
}

将适配器与rv配对的代码

val drugAndDropHandler = SimpleItemTouchHelperCallback(adapter)
ItemTouchHelper(drugAndDropHandler).attachToRecyclerView(multiple_stores_list)

Answer 1

我找到了答案。只需要ovveride getMovementFlags

                override fun getMovementFlags(recyclerView: RecyclerView, viewHolder: RecyclerView.ViewHolder): Int {
                    if (viewHolder.adapterPosition in 0..NOT_DRUGBLE_ITEMS_MAX_POSITION) {
                        return 0
                    }

删除所选单元格的拖放

1 个答案: