Feature added to mangas

Display other pages by touching the bottom or by clicking buttons

2 files changed, 47 insertions, 6 deletions

diff --git a/app/src/main/java/xyz/adjutor/aniki/manga/topmanga/TopMangaApi.kt b/app/src/main/java/xyz/adjutor/aniki/manga/topmanga/TopMangaApi.kt
index 629fe02..2688fab 100644
--- a/app/src/main/java/xyz/adjutor/aniki/manga/topmanga/TopMangaApi.kt
+++ b/app/src/main/java/xyz/adjutor/aniki/manga/topmanga/TopMangaApi.kt
@@ -2,10 +2,11 @@ package xyz.adjutor.aniki.manga.topmanga
 
 import retrofit2.Call
 import retrofit2.http.GET
+import retrofit2.http.Path
 
 interface TopMangaApi {
 
-    @GET("v3/top/manga")
-    fun getTopMangaData(): Call<TopMangaResponse>
+    @GET("v3/top/manga/{page}")
+    fun getTopMangaData(@Path("page") page: Int): Call<TopMangaResponse>
 
 }
\ No newline at end of file
diff --git a/app/src/main/java/xyz/adjutor/aniki/manga/topmanga/TopMangaPage.kt b/app/src/main/java/xyz/adjutor/aniki/manga/topmanga/TopMangaPage.kt
index b35bcdd..ea240b9 100644
--- a/app/src/main/java/xyz/adjutor/aniki/manga/topmanga/TopMangaPage.kt
+++ b/app/src/main/java/xyz/adjutor/aniki/manga/topmanga/TopMangaPage.kt
@@ -24,6 +24,7 @@ import retrofit2.converter.gson.GsonConverterFactory
 import xyz.adjutor.aniki.R
 import java.lang.reflect.Type
 
+
 class TopMangaPage : Fragment() {
 
     private lateinit var sharedPreferences: SharedPreferences
@@ -31,6 +32,7 @@ class TopMangaPage : Fragment() {
         .setLenient()
         .create()
     private var baseUrl = "https://api.jikan.moe/" //the api's base url
+    var page: Int = 1
 
     override fun onCreateView(
         inflater: LayoutInflater, container: ViewGroup?,
@@ -45,10 +47,29 @@ class TopMangaPage : Fragment() {
         if (mangaList != null) {
             showList(view, mangaList)
         } else {
-            makeApiCall(view, baseUrl)
+            makeApiCall(view, baseUrl, 1)
         }
 
+        // add other pages when we touch the bottom
+        val recyclerView: RecyclerView = view.findViewById(R.id.recycler_view)
+        recyclerView.addOnScrollListener(object : RecyclerView.OnScrollListener() {
+            override fun onScrollStateChanged(recyclerView: RecyclerView, newState: Int) {
+                super.onScrollStateChanged(recyclerView, newState)
+                if (!recyclerView.canScrollVertically(1)) { //direction integers: -1 for up, 1 for down, 0 will always return false.
+                    page += 1
+                    makeApiCall(view, baseUrl, page)
+                    Snackbar.make(
+                        requireView(),
+                        "Page $page has been loaded.",
+                        Snackbar.LENGTH_LONG
+                    )
+                        .setAction("Action", null).show()
+                }
+            }
+        })
+
         return view
+
     }
 
     private fun getDataFromCache(): List<TopManga>? {
@@ -71,16 +92,35 @@ class TopMangaPage : Fragment() {
         view.findViewById<Button>(R.id.button_home).setOnClickListener {
             findNavController().navigate(R.id.action_TopMangaPage_to_HomePage)
         }
+        view.findViewById<Button>(R.id.button_prev).setOnClickListener {
+            if (page > 1) {
+                page -= 1
+                makeApiCall(view, baseUrl, page)
+                Snackbar.make(requireView(), "Page $page has been loaded.", Snackbar.LENGTH_LONG)
+                    .setAction("Action", null).show()
+            } else {
+                Snackbar.make(requireView(), "You're already page 1.", Snackbar.LENGTH_LONG)
+                    .setAction("Action", null).show()
+            }
+        }
+        view.findViewById<Button>(R.id.button_next).setOnClickListener {
+            page += 1
+            makeApiCall(view, baseUrl, page)
+            Snackbar.make(requireView(), "Page $page has been loaded.", Snackbar.LENGTH_LONG)
+                .setAction("Action", null).show()
+        }
 
         fun updateList() {
-            makeApiCall(view, baseUrl)
+            makeApiCall(view, baseUrl, 1)
             Snackbar.make(requireView(), "Data refreshed", Snackbar.LENGTH_LONG)
                 .setAction("Action", null).show()
         }
 
+        //refresh when swiping down at the top of the page
         val swipeRefresh: SwipeRefreshLayout = view.findViewById(R.id.swiperefresh)
         swipeRefresh.setOnRefreshListener {
             updateList()
+            page = 1
             swipeRefresh.isRefreshing = false
         }
 
@@ -95,7 +135,7 @@ class TopMangaPage : Fragment() {
         (recyclerView.adapter as TopMangaAdapter).notifyDataSetChanged()
     }
 
-    private fun makeApiCall(view: View, BASE_URL: String) {
+    private fun makeApiCall(view: View, BASE_URL: String, page: Int) {
 
         val retrofit = Retrofit.Builder()
             .baseUrl(BASE_URL)
@@ -103,7 +143,7 @@ class TopMangaPage : Fragment() {
             .build()
 
         val service = retrofit.create(TopMangaApi::class.java)
-        val call = service.getTopMangaData()
+        val call = service.getTopMangaData(page)
 
         call.enqueue(object : Callback<TopMangaResponse> {
             override fun onResponse(