up

app/src/main/java/io/legado/app/ui/explore/ExploreShowActivity.kt

@@ -1,6 +1,8 @@
 package io.legado.app.ui.explore
 
 import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
 import androidx.lifecycle.Observer
 import androidx.recyclerview.widget.DividerItemDecoration
 import androidx.recyclerview.widget.LinearLayoutManager
@@ -10,7 +12,9 @@ import io.legado.app.base.VMBaseActivity
 import io.legado.app.data.entities.SearchBook
 import io.legado.app.ui.book.info.BookInfoActivity
 import io.legado.app.utils.getViewModel
+import io.legado.app.utils.gone
 import kotlinx.android.synthetic.main.activity_explore_show.*
+import kotlinx.android.synthetic.main.view_load_more.view.*
 import org.jetbrains.anko.startActivity
 
 class ExploreShowActivity : VMBaseActivity<ExploreShowViewModel>(R.layout.activity_explore_show),
@@ -19,11 +23,11 @@ class ExploreShowActivity : VMBaseActivity<ExploreShowViewModel>(R.layout.activi
         get() = getViewModel(ExploreShowViewModel::class.java)
 
     private lateinit var adapter: ExploreShowAdapter
+    private lateinit var loadMoreView: View
+    private var hasMore = true
 
     override fun onActivityCreated(savedInstanceState: Bundle?) {
-        intent.getStringExtra("exploreName")?.let {
+        title_bar.title = intent.getStringExtra("exploreName")
-            title_bar.title = it
-        }
         initRecyclerView()
         viewModel.booksData.observe(this, Observer { upData(it) })
         viewModel.initData(intent)
@@ -34,11 +38,45 @@ class ExploreShowActivity : VMBaseActivity<ExploreShowViewModel>(R.layout.activi
         recycler_view.layoutManager = LinearLayoutManager(this)
         recycler_view.addItemDecoration(DividerItemDecoration(this, RecyclerView.VERTICAL))
         recycler_view.adapter = adapter
+        loadMoreView =
+            LayoutInflater.from(this).inflate(R.layout.view_load_more, recycler_view, false)
+        adapter.addFooterView(loadMoreView)
+        recycler_view.addOnScrollListener(object : RecyclerView.OnScrollListener() {
+            override fun onScrolled(recyclerView: RecyclerView, dx: Int, dy: Int) {
+                super.onScrolled(recyclerView, dx, dy)
+                if (!recyclerView.canScrollVertically(1)) {
+                    scrollToBottom()
+                }
+            }
+        })
+    }
+
+    private fun scrollToBottom() {
+        adapter.let {
+            if (it.getActualItemCount() > 0 && hasMore) {
+                loadMoreView.rotate_loading.show()
+                viewModel.explore()
+            }
+        }
     }
 
     private fun upData(books: List<SearchBook>) {
+        if (books.isEmpty() && adapter.isEmpty()) {
+            hasMore = false
+            loadMoreView.rotate_loading.gone()
+            loadMoreView.tv_text.text = "空"
+        } else if (books.isEmpty()) {
+            hasMore = false
+            loadMoreView.rotate_loading.gone()
+            loadMoreView.tv_text.text = "我是有底线的"
+        } else if (adapter.getItems().contains(books.first()) && adapter.getItems().contains(books.last())) {
+            hasMore = false
+            loadMoreView.rotate_loading.gone()
+            loadMoreView.tv_text.text = "我是有底线的"
+        } else {
             adapter.addItems(books)
         }
+    }
 
     override fun showBookInfo(bookUrl: String) {
         startActivity<BookInfoActivity>(Pair("searchBookUrl", bookUrl))