完成部分帖子详情的功能 https://gitlab.ghzs.com/pm/halo-app-issues/-/issues/967

2020-08-20 21:01:40 +08:00
parent 7e79b4e328
commit cdbefd2d4f
19 changed files with 319 additions and 145 deletions
--- a/app/src/main/java/com/gh/common/view/vertical_recycler/SnappingLinearLayoutManager.kt
+++ b/app/src/main/java/com/gh/common/view/vertical_recycler/SnappingLinearLayoutManager.kt
@ -0,0 +1,20 @@
+package com.gh.common.view.vertical_recycler
+
+import android.content.Context
+import android.graphics.PointF
+import androidx.recyclerview.widget.LinearLayoutManager
+import androidx.recyclerview.widget.LinearSmoothScroller
+import androidx.recyclerview.widget.RecyclerView
+
+class SnappingLinearLayoutManager(val context: Context) : LinearLayoutManager(context) {
+    override fun smoothScrollToPosition(recyclerView: RecyclerView?, state: RecyclerView.State?, position: Int) {
+        val smoothScroller = object : LinearSmoothScroller(context) {
+            override fun getVerticalSnapPreference(): Int = SNAP_TO_START
+            override fun computeScrollVectorForPosition(targetPosition: Int): PointF =
+                    this@SnappingLinearLayoutManager.computeScrollVectorForPosition(targetPosition)
+                            ?: PointF(0F, 0F)
+        }
+        smoothScroller.targetPosition = position
+        startSmoothScroll(smoothScroller)
+    }
+}
--- a/app/src/main/java/com/gh/gamecenter/adapter/viewholder/FooterViewHolder.java
+++ b/app/src/main/java/com/gh/gamecenter/adapter/viewholder/FooterViewHolder.java
@ -1,11 +1,12 @@
 package com.gh.gamecenter.adapter.viewholder;

-import androidx.annotation.StringRes;
 import android.view.View;
 import android.view.View.OnClickListener;
 import android.widget.ProgressBar;
 import android.widget.TextView;

+import androidx.annotation.StringRes;
+
 import com.gh.base.BaseRecyclerViewHolder;
 import com.gh.base.OnListClickListener;
 import com.gh.gamecenter.R;
@ -88,6 +89,35 @@ public class FooterViewHolder extends BaseRecyclerViewHolder {
        });
    }

+    public void bindFooterDefaultEmpty(ListViewModel viewModel, boolean isLoading, boolean isNetworkError, boolean isOver) {
+        if (isNetworkError) {
+            lineLeft.setVisibility(View.GONE);
+            lineRight.setVisibility(View.GONE);
+            loading.setVisibility(View.GONE);
+            hint.setVisibility(View.VISIBLE);
+            hint.setText(R.string.loading_failed_retry);
+        } else if (isOver) {
+            lineLeft.setVisibility(View.GONE);
+            lineRight.setVisibility(View.GONE);
+            loading.setVisibility(View.GONE);
+            hint.setVisibility(View.VISIBLE);
+            hint.setText(R.string.ask_loadover_hint);
+        } else if (isLoading) {
+            lineLeft.setVisibility(View.GONE);
+            lineRight.setVisibility(View.GONE);
+            loading.setVisibility(View.VISIBLE);
+            hint.setVisibility(View.VISIBLE);
+            hint.setText(R.string.loading);
+        } else {
+            lineLeft.setVisibility(View.GONE);
+            lineRight.setVisibility(View.GONE);
+            loading.setVisibility(View.GONE);
+            hint.setVisibility(View.GONE);
+        }
+        itemView.setOnClickListener(v -> {
+            if (isNetworkError) viewModel.load(LoadType.RETRY);
+        });
+    }

    public void initFooterViewHolder(boolean isLoading, boolean isNetworkError, boolean isOver, @StringRes int loadOverHint) {
        if (isNetworkError) {
--- a/app/src/main/java/com/gh/gamecenter/baselist/ListFragment.java
+++ b/app/src/main/java/com/gh/gamecenter/baselist/ListFragment.java
@ -149,7 +149,7 @@ public abstract class ListFragment<T, VM extends BaseListViewModel /* 该泛型
                }
            }
        });
-        mReuseNoConn.setOnClickListener(view1 -> onLoadRefresh());
+        if (mReuseNoConn != null) mReuseNoConn.setOnClickListener(view1 -> onLoadRefresh());
    }

    private Class<VM> getViewModelClass() {
--- a/app/src/main/java/com/gh/gamecenter/entity/MeEntity.kt
+++ b/app/src/main/java/com/gh/gamecenter/entity/MeEntity.kt
@ -62,7 +62,7 @@ class MeEntity(@SerializedName("is_community_voted")
               @SerializedName("is_version_requested")
               var isVersionRequested: Boolean = false,

-               @SerializedName("is_follower",alternate = ["is_follow"])
+               @SerializedName("is_follower", alternate = ["is_follow"])
               var isFollower: Boolean = false, // 是否已经关注该用户

               @SerializedName("is_favorite")
--- a/app/src/main/java/com/gh/gamecenter/qa/article/detail/ArticleDetailFragment.kt
+++ b/app/src/main/java/com/gh/gamecenter/qa/article/detail/ArticleDetailFragment.kt
@ -26,7 +26,6 @@ import com.gh.gamecenter.ImageViewerActivity
 import com.gh.gamecenter.R
 import com.gh.gamecenter.SuggestionActivity
 import com.gh.gamecenter.baselist.ListAdapter
-import com.gh.gamecenter.baselist.ListFragment
 import com.gh.gamecenter.baselist.LoadType
 import com.gh.gamecenter.entity.CommentEntity
 import com.gh.gamecenter.entity.CommunityEntity
@ -47,20 +46,11 @@ import org.greenrobot.eventbus.Subscribe
 import org.greenrobot.eventbus.ThreadMode
 import java.util.*

-class ArticleDetailFragment : ListFragment<CommentItemData, ArticleDetailViewModel>() {
-
-    @BindView(R.id.reuse_none_data)
-    lateinit var mNoneData: View
-
-    @BindView(R.id.reuse_no_connection)
-    lateinit var mNoConn: View
+class ArticleDetailFragment : BaseArticleDetailCommentFragment<CommentItemData, ArticleDetailViewModel>() {

    @BindView(R.id.reuse_tv_none_data)
    lateinit var mNoDataText: TextView

-    @BindView(R.id.reuse_ll_loading)
-    lateinit var mLoading: View
-
    private var mElapsedHelper: TimeElapsedHelper? = null

    private var mIsShowCommentManager: Boolean = false
@ -95,12 +85,6 @@ class ArticleDetailFragment : ListFragment<CommentItemData, ArticleDetailViewMod
        mElapsedHelper = TimeElapsedHelper(this)
    }

-    override fun onResume() {
-        super.onResume()
-
-        replyTv.text = mViewModel.getCommentDraft(mViewModel.articleId)?.draft ?: "说点什么吧"
-    }
-
    override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
        super.onActivityResult(requestCode, resultCode, data)
        if (requestCode == ArticleDetailActivity.ARTICLE_PATCH_REQUEST && resultCode == Activity.RESULT_OK) {
@ -108,7 +92,7 @@ class ArticleDetailFragment : ListFragment<CommentItemData, ArticleDetailViewMod
                mViewModel.detailEntity = it
                updateView()
            }
-            mNoConn.performClick() //重新刷新
+            mReuseNoConn?.performClick() //重新刷新
        } else if (requestCode == ImageViewerActivity.REQUEST_FOR_VIEWED_IMAGE && resultCode == Activity.RESULT_OK) {
            val imageSet = data?.extras?.get(ImageViewerActivity.VIEWED_IMAGE) as HashSet<Integer>
            mAdapter?.articleDetailVH?.run {
@ -125,17 +109,17 @@ class ArticleDetailFragment : ListFragment<CommentItemData, ArticleDetailViewMod
            }
        } else if (requestCode == CommentActivity.REQUEST_CODE && resultCode == Activity.RESULT_OK) {
            val commentCount = data?.getIntExtra(CommentActivity.COMMENT_COUNT, 0)
-            if (commentCount != 0) {
-                mViewModel.detailEntity?.count?.comment = commentCount!!
+            if (commentCount != 0 && commentCount != null) {
+                mViewModel.detailEntity?.count?.comment = commentCount
                bottomCommentTv.text = String.format("评论 %s", NumberUtils.transSimpleCount(mViewModel.detailEntity?.count?.comment!!))
                // TODO 更新筛选 item 的评论数

+                updateFixedTopFilterView()
                if (EntranceUtils.ENTRANCE_WELCOME == mEntrance) {
                    LogUtils.uploadCommentFromWelcomeDialog()
                }
+                mViewModel.load(LoadType.REFRESH)
            }
-
-            mViewModel.load(LoadType.REFRESH)
        }
    }

@ -210,13 +194,13 @@ class ArticleDetailFragment : ListFragment<CommentItemData, ArticleDetailViewMod
        }

        mReuseNoConn?.setOnClickListener {
-            mNoConn.visibility = View.GONE
-            mLoading.visibility = View.VISIBLE
+            mReuseNoConn?.visibility = View.GONE
+            mListLoading?.visibility = View.VISIBLE
            mViewModel.getArticleDetail()
        }

        bottomCommentContainer.setOnClickListener {
-            mListRv.smoothScrollToPosition(3)
+            mListRv.smoothScrollToPosition(1)
        }

        if (mIsShowCommentManager) {
@ -238,8 +222,8 @@ class ArticleDetailFragment : ListFragment<CommentItemData, ArticleDetailViewMod

                        HistoryHelper.deleteArticleEntity(mViewModel.articleId)

-                        mNoConn.visibility = View.GONE
-                        mNoneData.visibility = View.VISIBLE
+                        mReuseNoConn?.visibility = View.GONE
+                        mReuseNoData?.visibility = View.VISIBLE
                        if (mIsRecommendsContent) {
                            val data = Intent()
                            data.putExtra(EntranceUtils.KEY_ANSWER_ID, mViewModel.articleId)
@ -257,11 +241,11 @@ class ArticleDetailFragment : ListFragment<CommentItemData, ArticleDetailViewMod
                            }
                        }
                    } else {
-                        mNoConn.visibility = View.VISIBLE
-                        mNoneData.visibility = View.GONE
+                        mReuseNoConn?.visibility = View.VISIBLE
+                        mReuseNoData?.visibility = View.GONE
                    }

-                    mLoading.visibility = View.GONE
+                    mListLoading?.visibility = View.GONE
                    bottomContainer.visibility = View.GONE
                    bottomShadowView.visibility = View.GONE
                }
@ -446,8 +430,8 @@ class ArticleDetailFragment : ListFragment<CommentItemData, ArticleDetailViewMod
    private fun updateView() {
        val articleDetail = mViewModel.detailEntity ?: return

-        mNoConn.visibility = View.GONE
-        mLoading.visibility = View.GONE
+        mReuseNoConn?.visibility = View.GONE
+        mListLoading?.visibility = View.GONE

        bottomContainer.visibility = View.VISIBLE
        bottomShadowView.visibility = View.VISIBLE
@ -472,10 +456,6 @@ class ArticleDetailFragment : ListFragment<CommentItemData, ArticleDetailViewMod
        updateLikeView(articleDetail.me.isCommunityArticleVote, articleDetail.count.vote)
    }

-    override fun onLoadRefresh() {
-        // do nothing
-    }
-
    @SuppressLint("SetTextI18n")
    private fun updateLikeView(alreadyLiked: Boolean, likeCount: Int) {
        mAdapter?.articleDetailVH?.updateLikeView(alreadyLiked, likeCount)
--- a/app/src/main/java/com/gh/gamecenter/qa/article/detail/ArticleDetailViewModel.kt
+++ b/app/src/main/java/com/gh/gamecenter/qa/article/detail/ArticleDetailViewModel.kt
@ -10,6 +10,7 @@ import com.gh.common.syncpage.SyncPageRepository
 import com.gh.common.util.CollectionUtils
 import com.gh.common.util.ErrorHelper
 import com.gh.gamecenter.R
+import com.gh.gamecenter.baselist.LoadStatus
 import com.gh.gamecenter.entity.CommentEntity
 import com.gh.gamecenter.entity.VoteEntity
 import com.gh.gamecenter.eventbus.EBCollectionChanged
@ -62,8 +63,12 @@ class ArticleDetailViewModel(application: Application,
                    add(CommentItemData(articleDetail = detailEntity))
                    add(CommentItemData(filter = true))
                }
-                commentList?.forEach {
-                    add(CommentItemData(commentNormal = it))
+                if (commentList.isNullOrEmpty() && mLoadStatusLiveData.value == LoadStatus.INIT_EMPTY) {
+                    add(CommentItemData(errorEmpty = true))
+                } else {
+                    commentList?.forEach {
+                        add(CommentItemData(commentNormal = it))
+                    }
                }
            }
            mResultLiveData.postValue(mergedList)
--- a/app/src/main/java/com/gh/gamecenter/qa/article/detail/BaseArticleDetailCommentAdapter.kt
+++ b/app/src/main/java/com/gh/gamecenter/qa/article/detail/BaseArticleDetailCommentAdapter.kt
@ -11,6 +11,7 @@ import com.gh.common.util.*
 import com.gh.gamecenter.R
 import com.gh.gamecenter.adapter.viewholder.FooterViewHolder
 import com.gh.gamecenter.baselist.ListAdapter
+import com.gh.gamecenter.baselist.LoadStatus
 import com.gh.gamecenter.databinding.ItemArticleDetailCommentBinding
 import com.gh.gamecenter.databinding.PieceArticleDetailCommentFilterBinding
 import com.gh.gamecenter.entity.CommentEntity
@ -27,6 +28,22 @@ abstract class BaseArticleDetailCommentAdapter(context: Context,

    var filterVH: ArticleDetailCommentFilterViewHolder? = null

+    override fun loadChange(status: LoadStatus?) {
+        if (status == LoadStatus.INIT) {
+            mIsNetworkError = false
+            mIsOver = false
+            mIsLoading = true
+            return
+        } else {
+            super.loadChange(status)
+        }
+    }
+
+    override fun setListData(updateData: MutableList<CommentItemData>?) {
+        mEntityList = ArrayList<CommentItemData>(updateData ?: arrayListOf())
+        notifyDataSetChanged()
+    }
+
    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): RecyclerView.ViewHolder {
        return when (viewType) {
            ItemViewType.ITEM_FOOTER -> {
@ -45,11 +62,11 @@ abstract class BaseArticleDetailCommentAdapter(context: Context,
            }

            ITEM_ERROR_EMPTY -> {
-                object : RecyclerView.ViewHolder(mLayoutInflater.inflate(R.layout.item_article_detail_comment_empty, parent, false)) {}
+                ArticleDetailCommentErrorViewHolder(mLayoutInflater.inflate(R.layout.item_article_detail_comment_empty, parent, false))
            }

            ITEM_ERROR_CONNECTION -> {
-                object : RecyclerView.ViewHolder(mLayoutInflater.inflate(R.layout.item_article_detail_comment_empty, parent, false)) {}
+                ArticleDetailCommentErrorViewHolder(mLayoutInflater.inflate(R.layout.item_article_detail_comment_empty, parent, false))
            }

            else -> throw IllegalAccessException()
@ -81,11 +98,12 @@ abstract class BaseArticleDetailCommentAdapter(context: Context,

            is FooterViewHolder -> {
                holder.initItemPadding()
-                holder.initFooterViewHolder(mIsLoading, mIsNetworkError, mIsOver, R.string.ask_loadover_hint)
+                holder.bindFooterDefaultEmpty(mViewModel, mIsLoading, mIsNetworkError, mIsOver)
            }
        }
    }

+    inner class ArticleDetailCommentErrorViewHolder(view: View) : RecyclerView.ViewHolder(view)
    inner class ArticleDetailCommentFilterViewHolder(var binding: PieceArticleDetailCommentFilterBinding) : RecyclerView.ViewHolder(binding.root) {
        fun bindView(article: ArticleDetailEntity? = null, comment: CommentEntity? = null) {
            binding.run {
@ -140,12 +158,13 @@ abstract class BaseArticleDetailCommentAdapter(context: Context,
                        binding.root.context.startActivity(this)
                    }
                }
+                binding.commentCountTv.text = viewModel.getCommentText(comment.reply, "评论")
            } else {
                // 评论详情用的样式
                binding.floorHintTv.text = CommentUtils.getCommentTime(comment.time)
-                binding.commentCountTv.setOnClickListener {
-                    commentClosure?.invoke(comment)
-                }
+                binding.commentCountTv.setOnClickListener { commentClosure?.invoke(comment) }
+                binding.commentCountTv.setCompoundDrawables(null, null, null, null)
+                binding.commentCountTv.text = "回复"
                binding.replyUserContainer.goneIf(comment.parentUser == null)
                comment.parentUser?.let {
                    binding.replyUserNameTv.text = it.name
@ -155,10 +174,8 @@ abstract class BaseArticleDetailCommentAdapter(context: Context,
                    binding.replyUserNameTv.setOnClickListener {
                        DirectUtils.directToHomeActivity(binding.root.context, comment.user.id, 1, "", "")
                    }
-                    binding.commentCountTv.text = "回复"
                }
            }
-            binding.commentCountTv.text = viewModel.getCommentText(comment.reply, "评论")
        }

        @SuppressLint("SetTextI18n")
--- a/app/src/main/java/com/gh/gamecenter/qa/article/detail/BaseArticleDetailCommentFragment.kt
+++ b/app/src/main/java/com/gh/gamecenter/qa/article/detail/BaseArticleDetailCommentFragment.kt
@ -0,0 +1,97 @@
+package com.gh.gamecenter.qa.article.detail
+
+import android.graphics.drawable.InsetDrawable
+import android.os.Bundle
+import android.view.View
+import android.widget.TextView
+import androidx.core.content.ContextCompat
+import androidx.recyclerview.widget.RecyclerView
+import butterknife.BindView
+import com.gh.common.util.DisplayUtils
+import com.gh.common.view.CustomDividerItemDecoration
+import com.gh.common.view.vertical_recycler.SnappingLinearLayoutManager
+import com.gh.gamecenter.R
+import com.gh.gamecenter.baselist.ListFragment
+
+abstract class BaseArticleDetailCommentFragment<T, VM : BaseArticleDetailCommentViewModel> : ListFragment<T, VM>() {
+
+    @BindView(R.id.fixedTopFilterView)
+    lateinit var fixedTopFilterView: View
+
+    @BindView(R.id.filterLatestTv)
+    lateinit var filterLatestTv: TextView
+
+    @BindView(R.id.filterOldestTv)
+    lateinit var filterOldestTv: TextView
+
+    @BindView(R.id.commentHintTv)
+    lateinit var commentHintTv: TextView
+
+    @BindView(R.id.commentHintCountTv)
+    lateinit var commentHintCountTv: TextView
+
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        super.onViewCreated(view, savedInstanceState)
+        mListRv.layoutManager = SnappingLinearLayoutManager(requireContext()).apply { mLayoutManager = this }
+        mListRv.addOnScrollListener(object : RecyclerView.OnScrollListener() {
+            override fun onScrolled(recyclerView: RecyclerView, dx: Int, dy: Int) {
+                super.onScrolled(recyclerView, dx, dy)
+                val firstCompletelyVisiblePosition = mLayoutManager.findFirstCompletelyVisibleItemPosition()
+                if (RecyclerView.NO_POSITION == firstCompletelyVisiblePosition) return
+
+                val filterView = mLayoutManager.findViewByPosition(1)
+
+                if (firstCompletelyVisiblePosition >= 2 && filterView == null) {
+                    fixedTopFilterView.visibility = View.VISIBLE
+                    updateFixedTopFilterView()
+                } else {
+                    filterView?.let {
+                        if (it.top <= 0 && fixedTopFilterView.visibility == View.GONE) {
+                            fixedTopFilterView.visibility = View.VISIBLE
+                            updateFixedTopFilterView()
+                        } else if (it.top > 0 && fixedTopFilterView.visibility == View.VISIBLE) {
+                            fixedTopFilterView.visibility = View.GONE
+                        }
+                    }
+                }
+            }
+        })
+
+
+        filterLatestTv.setOnClickListener {
+            getFilterVH()?.binding?.filterLatestTv?.performClick()
+            updateFixedTopFilterView()
+        }
+        filterOldestTv.setOnClickListener {
+            getFilterVH()?.binding?.filterOldestTv?.performClick()
+            updateFixedTopFilterView()
+        }
+    }
+
+    override fun onLoadRefresh() {
+        // do nothing
+    }
+
+    override fun onLoadEmpty() {
+        // do nothing
+    }
+
+    override fun getItemDecoration(): RecyclerView.ItemDecoration {
+        val insetDivider = InsetDrawable(ContextCompat.getDrawable(requireContext(), R.drawable.divider_article_detail_comment), DisplayUtils.dip2px(20F), 0, DisplayUtils.dip2px(20F), 0)
+        val itemDecoration = CustomDividerItemDecoration(requireContext(), notDecorateTheFirstTwoItems = true, notDecorateTheLastItem = true)
+        itemDecoration.setDrawable(insetDivider)
+        return itemDecoration
+    }
+
+    fun updateFixedTopFilterView() {
+        filterLatestTv.setTextColor(getFilterVH()?.binding?.filterLatestTv?.textColors)
+        filterOldestTv.setTextColor(getFilterVH()?.binding?.filterOldestTv?.textColors)
+        commentHintTv.text = getFilterVH()?.binding?.commentHintTv?.text
+        commentHintCountTv.text = getFilterVH()?.binding?.commentHintCountTv?.text
+    }
+
+    private fun getFilterVH(): BaseArticleDetailCommentAdapter.ArticleDetailCommentFilterViewHolder? {
+        return (provideListAdapter() as BaseArticleDetailCommentAdapter).filterVH
+    }
+
+}
--- a/app/src/main/java/com/gh/gamecenter/qa/article/detail/BaseArticleDetailCommentViewModel.kt
+++ b/app/src/main/java/com/gh/gamecenter/qa/article/detail/BaseArticleDetailCommentViewModel.kt
@ -6,6 +6,8 @@ import com.gh.common.util.CommentDraftContainer
 import com.gh.common.util.PostCommentUtils
 import com.gh.common.util.ToastUtils
 import com.gh.gamecenter.baselist.ListViewModel
+import com.gh.gamecenter.baselist.LoadParams
+import com.gh.gamecenter.baselist.LoadStatus
 import com.gh.gamecenter.baselist.LoadType
 import com.gh.gamecenter.entity.CommentDraft
 import com.gh.gamecenter.entity.CommentEntity
@ -20,6 +22,38 @@ abstract class BaseArticleDetailCommentViewModel(application: Application, var a

    val loadResultLiveData = MutableLiveData<LoadResult>()

+    override fun loadStatusControl(size: Int) {
+        if (mCurLoadParams.loadOffset == LoadParams.DEFAULT_OFFSET) { // 初始化列表
+            when {
+                size == 0 -> {
+                    mLoadStatusLiveData.setValue(LoadStatus.INIT_EMPTY)
+                }
+                size == REQUEST_FAILURE_SIZE -> {
+                    // TODO 处理列表加载失败问题
+                    mLoadStatusLiveData.setValue(LoadStatus.INIT_LOADED)
+                }
+                size < mOverLimitSize -> {
+                    // 避免一个屏幕出现两次分页
+                    mLoadStatusLiveData.setValue(LoadStatus.INIT_OVER)
+                }
+                else -> mLoadStatusLiveData.setValue(LoadStatus.INIT_LOADED)
+            }
+        } else {
+            when (size) {
+                REQUEST_FAILURE_SIZE -> mLoadStatusLiveData.setValue(LoadStatus.LIST_FAILED)
+                0 -> mLoadStatusLiveData.setValue(LoadStatus.LIST_OVER)
+                else -> mLoadStatusLiveData.setValue(LoadStatus.LIST_LOADED)
+            }
+        }
+
+        if (size == REQUEST_FAILURE_SIZE) {
+            mRetryParams = mCurLoadParams
+        } else {
+            mRetryParams = null
+            mCurLoadParams.loadOffset = mCurLoadParams.loadOffset + 1 // 页数 + 1
+        }
+    }
+
    fun changeSort(sortType: SortType) {
        if (sortType != currentSortType) {
            currentSortType = sortType
--- a/app/src/main/java/com/gh/gamecenter/qa/article/detail/comment/ArticleDetailCommentAdapter.kt
+++ b/app/src/main/java/com/gh/gamecenter/qa/article/detail/comment/ArticleDetailCommentAdapter.kt
@ -8,12 +8,9 @@ import androidx.constraintlayout.widget.ConstraintSet
 import androidx.databinding.DataBindingUtil
 import androidx.recyclerview.widget.RecyclerView
 import com.gh.gamecenter.R
-import com.gh.gamecenter.baselist.LoadStatus
 import com.gh.gamecenter.databinding.ItemArticleDetailCommentBinding
 import com.gh.gamecenter.entity.CommentEntity
 import com.gh.gamecenter.qa.article.detail.BaseArticleDetailCommentAdapter
-import com.gh.gamecenter.qa.article.detail.CommentItemData
-import java.util.*

 class ArticleDetailCommentAdapter(context: Context,
                                  var mViewModel: ArticleDetailCommentViewModel,
@ -21,27 +18,13 @@ class ArticleDetailCommentAdapter(context: Context,
                                  commentClosure: ((CommentEntity) -> Unit)? = null)
    : BaseArticleDetailCommentAdapter(context, mViewModel, type, commentClosure) {

-    override fun loadChange(status: LoadStatus?) {
-        if (status == LoadStatus.INIT) {
-            mIsNetworkError = false
-            mIsOver = false
-            mIsLoading = true
-            return
-        } else {
-            super.loadChange(status)
-        }
-    }
-
-    override fun setListData(updateData: MutableList<CommentItemData>?) {
-        mEntityList = ArrayList<CommentItemData>(updateData ?: arrayListOf())
-        notifyDataSetChanged()
-    }
+    var topCommentVH: ArticleDetailTopCommentViewHolder? = null

    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): RecyclerView.ViewHolder {
        return when (viewType) {
            ITEM_COMMENT_TOP -> {
                val binding: ItemArticleDetailCommentBinding = DataBindingUtil.inflate(mLayoutInflater, R.layout.item_article_detail_comment, parent, false)
-                ArticleDetailTopCommentViewHolder(binding)
+                ArticleDetailTopCommentViewHolder(binding).apply { topCommentVH = this }
            }

            else -> super.onCreateViewHolder(parent, viewType)
@ -55,19 +38,17 @@ class ArticleDetailCommentAdapter(context: Context,
            }

            is ArticleDetailCommentFilterViewHolder -> {
-                holder.bindView(comment = mViewModel.commentDetailLiveData.value)
+                holder.bindView(comment = mViewModel.commentDetail)
            }

            else -> super.onBindViewHolder(holder, position)
        }
    }

-    private inner class ArticleDetailTopCommentViewHolder(var binding: ItemArticleDetailCommentBinding)
+    inner class ArticleDetailTopCommentViewHolder(var binding: ItemArticleDetailCommentBinding)
        : RecyclerView.ViewHolder(binding.root) {

        fun bindView(comment: CommentEntity) {
-            binding.comment = comment
-
            val constraintSet = ConstraintSet()
            constraintSet.clone(binding.contentTv.parent as ConstraintLayout)

@ -75,11 +56,13 @@ class ArticleDetailCommentAdapter(context: Context,
            constraintSet.connect(binding.contentTv.id, ConstraintSet.START, binding.iconContainer.id, ConstraintSet.START)
            constraintSet.applyTo(binding.contentTv.parent as ConstraintLayout)

+            binding.comment = comment
            binding.moreIv.visibility = View.GONE
+            binding.floorHintTv.text = "1F"
+            binding.commentCountTv.text = mViewModel.getCommentText(comment.reply, "回复")
+            binding.commentCountTv.setOnClickListener { commentClosure?.invoke(comment) }

            ArticleDetailCommentViewHolder.bindComment(binding, mViewModel, comment)
-            binding.commentCountTv.text = mViewModel.getCommentText(comment.reply, "回复")
-            binding.floorHintTv.text = "1F"
        }
    }

--- a/app/src/main/java/com/gh/gamecenter/qa/article/detail/comment/ArticleDetailCommentFragment.kt
+++ b/app/src/main/java/com/gh/gamecenter/qa/article/detail/comment/ArticleDetailCommentFragment.kt
@ -1,43 +1,26 @@
 package com.gh.gamecenter.qa.article.detail.comment

-import android.app.Activity
 import android.content.Intent
-import android.graphics.drawable.InsetDrawable
 import android.os.Bundle
 import android.view.View
 import android.view.ViewGroup
-import androidx.core.content.ContextCompat
 import androidx.core.view.ViewCompat
-import androidx.recyclerview.widget.RecyclerView
-import butterknife.BindView
-import com.gh.common.history.HistoryHelper
 import com.gh.common.util.*
-import com.gh.common.view.CustomDividerItemDecoration
 import com.gh.gamecenter.R
 import com.gh.gamecenter.baselist.ListAdapter
-import com.gh.gamecenter.baselist.ListFragment
 import com.gh.gamecenter.baselist.LoadType
 import com.gh.gamecenter.entity.CommentEntity
 import com.gh.gamecenter.qa.article.detail.BaseArticleDetailCommentAdapter
+import com.gh.gamecenter.qa.article.detail.BaseArticleDetailCommentFragment
 import com.gh.gamecenter.qa.article.detail.BaseArticleDetailCommentViewModel
 import com.gh.gamecenter.qa.article.detail.CommentItemData
 import com.gh.gamecenter.qa.comment.CommentActivity
 import com.halo.assistant.HaloApp
 import com.qq.gdt.action.ActionType
-import kotlinx.android.synthetic.main.fragment_article_detail.*
-import kotlinx.android.synthetic.main.fragment_article_detail_comment.toolbar
+import kotlinx.android.synthetic.main.fragment_article_detail_comment.*
 import kotlinx.android.synthetic.main.piece_article_input_container.*

-class ArticleDetailCommentFragment : ListFragment<CommentItemData, ArticleDetailCommentViewModel>() {
-
-    @BindView(R.id.reuse_none_data)
-    lateinit var mNoneData: View
-
-    @BindView(R.id.reuse_no_connection)
-    lateinit var mNoConn: View
-
-    @BindView(R.id.reuse_ll_loading)
-    lateinit var mLoading: View
+class ArticleDetailCommentFragment : BaseArticleDetailCommentFragment<CommentItemData, ArticleDetailCommentViewModel>() {

    private var mAdapter: ArticleDetailCommentAdapter? = null
    private lateinit var mViewModel: ArticleDetailCommentViewModel
@ -63,10 +46,12 @@ class ArticleDetailCommentFragment : ListFragment<CommentItemData, ArticleDetail

    override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
        super.onActivityResult(requestCode, resultCode, data)
-        if (requestCode == CommentActivity.REQUEST_CODE && resultCode == Activity.RESULT_OK) {
-            val commentCount = data?.getIntExtra(CommentActivity.COMMENT_COUNT, 0) ?: 0
+        val commentCount = data?.getIntExtra(CommentActivity.COMMENT_COUNT, 0)
+        if (commentCount != null && commentCount != 0) {
+            mViewModel.commentDetail?.reply = commentCount
+            // TODO 更新筛选 item 的评论数
+            updateFixedTopFilterView()
            mViewModel.load(LoadType.REFRESH)
-            mViewModel.commentDetailLiveData.value?.reply = commentCount
        }
    }

@ -79,10 +64,6 @@ class ArticleDetailCommentFragment : ListFragment<CommentItemData, ArticleDetail
                        arguments?.getString(EntranceUtils.KEY_ARTICLE_COMMENT_ID) ?: ""))
    }

-    override fun onLoadRefresh() {
-        // do nothing
-    }
-
    override fun provideListAdapter(): ListAdapter<*> {
        return mAdapter
                ?: ArticleDetailCommentAdapter(requireContext(), mViewModel, BaseArticleDetailCommentAdapter.AdapterType.SUB_COMMENT) {
@ -92,8 +73,8 @@ class ArticleDetailCommentFragment : ListFragment<CommentItemData, ArticleDetail
    }

    private fun initView() {
-        ViewCompat.setOnApplyWindowInsetsListener(toolbar) { _, insets ->
-            (toolbar.layoutParams as ViewGroup.MarginLayoutParams).topMargin = insets.systemWindowInsetTop
+        ViewCompat.setOnApplyWindowInsetsListener(toolbarContainer) { _, insets ->
+            (toolbarContainer.layoutParams as ViewGroup.MarginLayoutParams).topMargin = insets.systemWindowInsetTop
            insets.consumeSystemWindowInsets()
        }

@ -103,7 +84,7 @@ class ArticleDetailCommentFragment : ListFragment<CommentItemData, ArticleDetail
        replyTv.text = "说点什么吧"
        replyTv.setRoundedColorBackground(R.color.text_F0F0F0, 19F)
        replyTv.setDebouncedClickListener {
-            val comment = mCurrentComment ?: mViewModel.commentDetailLiveData.value
+            val comment = mCurrentComment ?: mViewModel.commentDetail
            comment?.let { startCommentActivity(it) }
        }
    }
@ -126,19 +107,12 @@ class ArticleDetailCommentFragment : ListFragment<CommentItemData, ArticleDetail
        return super.onBackPressed()
    }

-    override fun getItemDecoration(): RecyclerView.ItemDecoration {
-        val insetDivider = InsetDrawable(ContextCompat.getDrawable(requireContext(), R.drawable.divider_article_detail_comment), DisplayUtils.dip2px(20F), 0, DisplayUtils.dip2px(20F), 0)
-        val itemDecoration = CustomDividerItemDecoration(requireContext(), notDecorateTheLastItem = true)
-        itemDecoration.setDrawable(insetDivider)
-        return itemDecoration
-    }
-
    private fun initObserver() {
        mViewModel.loadResultLiveData.observeNonNull(this) {
            when (it) {
                BaseArticleDetailCommentViewModel.LoadResult.SUCCESS -> {
-                    mNoConn.visibility = View.GONE
-                    mLoading.visibility = View.GONE
+                    mReuseNoConn?.visibility = View.GONE
+                    mListLoading?.visibility = View.GONE

                    GdtHelper.logAction(ActionType.PAGE_VIEW,
                            GdtHelper.CONTENT_TYPE, "QA_ARTICLE",
@ -146,11 +120,8 @@ class ArticleDetailCommentFragment : ListFragment<CommentItemData, ArticleDetail
                }
                else -> {
                    if (it == BaseArticleDetailCommentViewModel.LoadResult.DELETED) {
-
-                        HistoryHelper.deleteArticleEntity(mViewModel.articleId)
-
-                        mNoConn.visibility = View.GONE
-                        mNoneData.visibility = View.VISIBLE
+                        mReuseNoConn?.visibility = View.GONE
+                        mReuseNoData?.visibility = View.VISIBLE
                        toast(R.string.content_delete_toast)

                        toolbar.menu?.run {
@ -159,11 +130,11 @@ class ArticleDetailCommentFragment : ListFragment<CommentItemData, ArticleDetail
                            }
                        }
                    } else {
-                        mNoConn.visibility = View.VISIBLE
-                        mNoneData.visibility = View.GONE
+                        mReuseNoConn?.visibility = View.VISIBLE
+                        mReuseNoData?.visibility = View.GONE
                    }

-                    mLoading.visibility = View.GONE
+                    mListLoading?.visibility = View.GONE
                    bottomContainer.visibility = View.GONE
                    bottomShadowView.visibility = View.GONE
                }
@ -175,7 +146,7 @@ class ArticleDetailCommentFragment : ListFragment<CommentItemData, ArticleDetail
        val intent = CommentActivity.getArticleCommentReplyIntent(
                requireContext(),
                mViewModel.articleId,
-                comment.reply,
+                mViewModel.commentDetail?.reply,
                true,
                comment.id ?: "",
                comment,
--- a/app/src/main/java/com/gh/gamecenter/qa/article/detail/comment/ArticleDetailCommentViewModel.kt
+++ b/app/src/main/java/com/gh/gamecenter/qa/article/detail/comment/ArticleDetailCommentViewModel.kt
@ -2,9 +2,9 @@ package com.gh.gamecenter.qa.article.detail.comment

 import android.annotation.SuppressLint
 import android.app.Application
-import androidx.lifecycle.MutableLiveData
 import androidx.lifecycle.ViewModel
 import androidx.lifecycle.ViewModelProvider
+import com.gh.gamecenter.baselist.LoadStatus
 import com.gh.gamecenter.entity.CommentEntity
 import com.gh.gamecenter.qa.article.detail.BaseArticleDetailCommentViewModel
 import com.gh.gamecenter.qa.article.detail.CommentItemData
@ -13,6 +13,7 @@ import com.gh.gamecenter.retrofit.RetrofitManager
 import io.reactivex.Observable
 import io.reactivex.Single
 import io.reactivex.schedulers.Schedulers
+import retrofit2.HttpException

 class ArticleDetailCommentViewModel(application: Application,
                                    articleId: String = "",
@ -20,7 +21,7 @@ class ArticleDetailCommentViewModel(application: Application,
                                    var commentId: String = "")
    : BaseArticleDetailCommentViewModel(application, articleId, communityId) {

-    var commentDetailLiveData = MutableLiveData<CommentEntity?>()
+    var commentDetail: CommentEntity? = null

    override fun provideDataObservable(page: Int): Observable<List<CommentEntity>>? = null

@ -29,18 +30,22 @@ class ArticleDetailCommentViewModel(application: Application,
    }

    private fun mergeListData(commentList: List<CommentEntity>?) {
-        commentDetailLiveData.value?.let { commentDetail ->
+        commentDetail?.let { it ->
            val mergedList = arrayListOf<CommentItemData>().apply {
                if (mResultLiveData.value != null && mResultLiveData.value?.size != 0) {
                    // 保持头两个 item 的内存地址不变
                    add(mResultLiveData.value!![0])
                    add(mResultLiveData.value!![1])
                } else {
-                    add(CommentItemData(commentTop = commentDetail))
+                    add(CommentItemData(commentTop = it))
                    add(CommentItemData(filter = true))
                }
-                commentList?.forEach {
-                    add(CommentItemData(commentNormal = it))
+                if (commentList.isNullOrEmpty() && mLoadStatusLiveData.value == LoadStatus.INIT_EMPTY) {
+                    add(CommentItemData(errorEmpty = true))
+                } else {
+                    commentList?.forEach {
+                        add(CommentItemData(commentNormal = it))
+                    }
                }
            }
            mResultLiveData.postValue(mergedList)
@ -59,13 +64,17 @@ class ArticleDetailCommentViewModel(application: Application,
                .subscribe(object : BiResponse<CommentEntity>() {
                    @SuppressLint("CheckResult")
                    override fun onSuccess(data: CommentEntity) {
-                        commentDetailLiveData.postValue(data)
+                        commentDetail = data
                        loadResultLiveData.postValue(LoadResult.SUCCESS)
                        mergeListData(mListLiveData.value)
                    }

                    override fun onFailure(exception: Exception) {
-                        commentDetailLiveData.postValue(null)
+                        if (exception is HttpException && exception.code().toString().contains("404")) {
+                            loadResultLiveData.postValue(LoadResult.DELETED)
+                        } else {
+                            loadResultLiveData.postValue(LoadResult.NETWORK_ERROR)
+                        }
                    }
                })
    }
--- a/app/src/main/java/com/gh/gamecenter/qa/comment/NewCommentFragment.kt
+++ b/app/src/main/java/com/gh/gamecenter/qa/comment/NewCommentFragment.kt
@ -104,11 +104,6 @@ open class NewCommentFragment : ListFragment<CommentEntity, NewCommentViewModel>
                    mSendingDialog?.dismiss()
                    toast("发表成功")

-                    if (mShowInputOnly) {
-                        requireActivity().finish()
-                        return@Observer
-                    }
-
                    if (mCommentEntity != null) { // 补充默认草稿
                        mCommentEntity = null // 清空当前评论实体
                        commentEt.hint = getString(R.string.message_detail_comment_hint)
@ -120,7 +115,6 @@ open class NewCommentFragment : ListFragment<CommentEntity, NewCommentViewModel>

                    mCommentCount++
                    updateCommentCount()
-                    onRefresh()

                    if (mCommentListener != null) {
                        mCommentListener?.onCountChange(mCommentCount)
@ -138,6 +132,13 @@ open class NewCommentFragment : ListFragment<CommentEntity, NewCommentViewModel>
                                SyncFieldConstants.ANSWER_COMMENT_COUNT,
                                mCommentCount))
                    }
+
+                    if (mShowInputOnly) {
+                        requireActivity().finish()
+                        return@Observer
+                    } else {
+                        onRefresh()
+                    }
                }
                apiResponse.httpException != null -> {
                    mSendingDialog?.dismiss()
@ -182,6 +183,9 @@ open class NewCommentFragment : ListFragment<CommentEntity, NewCommentViewModel>
        super.onViewCreated(view, savedInstanceState)

        if (mShowInputOnly) {
+            if (mCommentEntity != null) {
+                commentEt.hint = "回复：${mCommentEntity?.user?.name}"
+            }
            commentContainer.visibility = View.GONE
        }

--- a/app/src/main/res/layout/fragment_article_detail.xml
+++ b/app/src/main/res/layout/fragment_article_detail.xml
@ -11,8 +11,7 @@
        style="@style/Base_ToolbarStyle"
        android:layout_width="match_parent"
        android:layout_height="@dimen/appbar_height"
-        android:background="@color/white"
-        app:layout_collapseMode="pin">
+        android:background="@color/white">

        <LinearLayout
            android:layout_width="match_parent"
@ -20,7 +19,7 @@
            android:background="@color/transparent"
            android:gravity="center_vertical"
            android:orientation="horizontal"
-            android:translationX="-25dp">
+            android:translationX="-32dp">

            <com.gh.common.view.GameIconView
                android:id="@+id/forumGameIv"
@ -65,6 +64,15 @@

    </RelativeLayout>

+    <include
+        android:id="@+id/fixedTopFilterView"
+        layout="@layout/piece_article_detail_comment_filter"
+        android:layout_width="match_parent"
+        android:layout_height="44dp"
+        android:layout_below="@id/toolbar"
+        android:visibility="gone"
+        tools:visibility="visible" />
+
    <View
        android:id="@+id/bottomShadowView"
        android:layout_width="match_parent"
--- a/app/src/main/res/layout/fragment_article_detail_comment.xml
+++ b/app/src/main/res/layout/fragment_article_detail_comment.xml
@ -1,6 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <com.gh.common.view.MaterializedRelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@color/white"
@ -9,14 +10,14 @@
    <androidx.constraintlayout.widget.ConstraintLayout
        android:id="@+id/toolbarContainer"
        android:layout_width="match_parent"
-        android:layout_height="wrap_content"
+        android:layout_height="@dimen/appbar_height"
        android:fitsSystemWindows="true">

        <androidx.appcompat.widget.Toolbar
            android:id="@+id/toolbar"
            style="@style/Base_ToolbarStyle"
            android:layout_width="match_parent"
-            android:layout_height="@dimen/appbar_height"
+            android:layout_height="match_parent"
            android:background="@color/white"
            app:layout_constraintTop_toTopOf="parent" />

@ -35,7 +36,8 @@
    <RelativeLayout
        android:id="@+id/listContainer"
        android:layout_width="match_parent"
-        android:layout_height="wrap_content"
+        android:layout_height="match_parent"
+        android:layout_above="@id/bottomContainer"
        android:layout_below="@id/toolbarContainer"
        android:descendantFocusability="beforeDescendants"
        android:focusableInTouchMode="true">
@ -43,7 +45,7 @@
        <androidx.recyclerview.widget.RecyclerView
            android:id="@+id/list_rv"
            android:layout_width="match_parent"
-            android:layout_height="wrap_content" />
+            android:layout_height="match_parent" />

        <include
            layout="@layout/reuse_loading"
@ -53,8 +55,17 @@

    </RelativeLayout>

+    <include
+        android:id="@+id/fixedTopFilterView"
+        layout="@layout/piece_article_detail_comment_filter"
+        android:layout_width="match_parent"
+        android:layout_height="44dp"
+        android:layout_below="@id/toolbarContainer"
+        android:visibility="gone"
+        tools:visibility="visible" />
+
    <View
-        android:id="@+id/article_detail_line3"
+        android:id="@+id/bottomShadowView"
        android:layout_width="match_parent"
        android:layout_height="6dp"
        android:layout_above="@id/bottomContainer"
--- a/app/src/main/res/layout/item_article_detail_comment_empty.xml
+++ b/app/src/main/res/layout/item_article_detail_comment_empty.xml
@ -4,6 +4,7 @@
    android:layout_height="wrap_content">

    <LinearLayout
+        android:id="@+id/container"
        android:layout_width="match_parent"
        android:layout_height="288dp"
        android:background="@color/white"
@ -16,10 +17,11 @@
            android:src="@drawable/ic_article_detail_comment_empty" />

        <TextView
+            android:id="@+id/hintTv"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginTop="16dp"
-            android:text="还没有人评论噢~说说你的看法吧"
+            android:text="@string/article_detail_empty_comment"
            android:textColor="@color/text_cccccc"
            android:textSize="12sp" />
    </LinearLayout>
--- a/app/src/main/res/layout/item_article_detail_content.xml
+++ b/app/src/main/res/layout/item_article_detail_content.xml
@ -96,6 +96,7 @@
                    android:id="@+id/badgeContainer"
                    android:layout_width="wrap_content"
                    android:layout_height="match_parent"
+                    android:layout_marginLeft="4dp"
                    android:orientation="horizontal"
                    app:layout_constraintBottom_toBottomOf="parent"
                    app:layout_constraintEnd_toEndOf="parent"
--- a/app/src/main/res/layout/piece_article_detail_comment_filter.xml
+++ b/app/src/main/res/layout/piece_article_detail_comment_filter.xml
@ -8,6 +8,7 @@
        android:layout_width="match_parent"
        android:layout_height="44dp"
        android:background="@color/white"
+        android:clickable="false"
        android:paddingLeft="20dp"
        android:paddingRight="20dp"
        tools:showIn="@layout/fragment_article_detail">
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@ -648,6 +648,7 @@
    <string name="questions_edit_choose_forum">选择论坛<Data><![CDATA[<font color="#ff4147">*</font>]]></Data></string>

    <string name="article_placeholder">请撰写帖子...</string>
+    <string name="article_detail_empty_comment">还没有人评论噢~说说你的看法吧</string>

    <string name="share_community_article_url">https://www.ghzs.com/communities/%1$s/articles/%2$s.html</string>
    <string name="share_community_article_title">%1$s发布了帖子：%2$s （%3$d赞同）</string>