技術標籤：kotlinAndroid基礎

動態設定RecyclerView的Item的間距，使其各部分間距相等

WorkAdapter.kt

class WorkAdapter : BaseQuickAdapter<Work, BaseViewHolder>(R.layout.store_mine_recycler_item) {
    override fun convert(holder: BaseViewHolder, item: Work) {
        val iv = holder.getView<ImageView>(R.id.iv_thumb)
 

        Glide.with(context)
            .load(item.thumb)
            .centerCrop()
            .placeholder(R.mipmap.store_placeholder)
            .error(R.mipmap.store_placeholder)
            .into(iv)
    }
}

class SpaceItemDecoration(var space: Int) : ItemDecoration() {
    override fun getItemOffsets
 
(
        outRect: Rect,
        view: View,
        parent: RecyclerView,
        state: RecyclerView.State
    ) {
        if (parent.getChildAdapterPosition(view) != 0) outRect.left = space
    }
}

MainActivity

• binding.rvWorks.addItemDecoration(SpaceItemDecoration(SizeUtils.dp2px(24f)))

    private
 
 fun initView() {
        //作品列表
        adapter = WorkAdapter()
        adapter.setOnItemClickListener { _, _, position ->
            val work = adapter.data[position]
            MyWorkPreviewActivity.start(requireContext(), work)
        }
        binding.rvWorks.adapter = adapter
        binding.rvWorks.addItemDecoration(SpaceItemDecoration(SizeUtils.dp2px(24f)))
        binding.rvWorks.layoutManager =
            LinearLayoutManager(context, LinearLayoutManager.HORIZONTAL, false)
    }