Working on #169.

List isn't reloaded each time.
When new articles arrive, the list is still updated, but the list stays at the same (old) position.
Not sure if I keep this behavior, or try to keep the old position and scroll to it.

CHANGELOG.md

@@ -18,6 +18,8 @@
 
 - Updated the Contribution guide about translations.
 
+- Better handling for articles update. (See #169)
+
 **1.5.5.x (didn't last long) AND 1.5.6.x**
 
 - Toolbar in reader activity.

app/src/main/java/apps/amine/bou/readerforselfoss/HomeActivity.kt

@@ -17,13 +17,13 @@ import android.support.v7.widget.RecyclerView
 import android.support.v7.widget.SearchView
 import android.support.v7.widget.StaggeredGridLayoutManager
 import android.support.v7.widget.helper.ItemTouchHelper
-import android.util.Log
 import android.view.Menu
 import android.view.MenuItem
 import android.view.View
 import android.widget.Toast
 import apps.amine.bou.readerforselfoss.adapters.ItemCardAdapter
 import apps.amine.bou.readerforselfoss.adapters.ItemListAdapter
+import apps.amine.bou.readerforselfoss.adapters.ItemsAdapter
 import apps.amine.bou.readerforselfoss.api.selfoss.Item
 import apps.amine.bou.readerforselfoss.api.selfoss.SelfossApi
 import apps.amine.bou.readerforselfoss.api.selfoss.Sources
@@ -119,6 +119,8 @@ class HomeActivity : AppCompatActivity(), SearchView.OnQueryTextListener {
     private var recyclerViewScrollListener: RecyclerView.OnScrollListener? = null
     private lateinit var settings: SharedPreferences
 
+    private var recyclerAdapter: RecyclerView.Adapter<*>? = null
+
     private var badgeNew: Int = -1
     private var badgeAll: Int = -1
     private var badgeFavs: Int = -1
@@ -161,7 +163,6 @@ class HomeActivity : AppCompatActivity(), SearchView.OnQueryTextListener {
         handleBottomBar()
         handleDrawer()
 
-        reloadLayoutManager()
         handleSwipeRefreshLayout()
     }
 
@@ -314,6 +315,16 @@ class HomeActivity : AppCompatActivity(), SearchView.OnQueryTextListener {
 
         handleSharedPrefs()
 
+        reloadLayoutManager()
+
+        if (!infiniteScroll) {
+            recyclerView.setHasFixedSize(true)
+        } else {
+            handleInfiniteScroll()
+        }
+
+        handleBottomBarActions()
+
         getElementsAccordingToTab()
     }
 
@@ -623,48 +634,67 @@ class HomeActivity : AppCompatActivity(), SearchView.OnQueryTextListener {
     }
 
     private fun reloadLayoutManager() {
-        val mLayoutManager: RecyclerView.LayoutManager
+        val currentManager = recyclerView.layoutManager
+        val layoutManager: RecyclerView.LayoutManager
+
+        // This will only update the layout manager if settings changed
+        when (currentManager) {
+            is StaggeredGridLayoutManager ->
+                    if (!shouldBeCardView) {
+                        layoutManager = GridLayoutManager(this, calculateNoOfColumns())
+                        recyclerView.layoutManager = layoutManager
+                    }
+            is GridLayoutManager ->
                     if (shouldBeCardView) {
-            mLayoutManager = StaggeredGridLayoutManager(
+                        layoutManager = StaggeredGridLayoutManager(
                                 calculateNoOfColumns(),
                                 StaggeredGridLayoutManager.VERTICAL
                         )
-            mLayoutManager.gapStrategy = StaggeredGridLayoutManager.GAP_HANDLING_MOVE_ITEMS_BETWEEN_SPANS
+                        layoutManager.gapStrategy = StaggeredGridLayoutManager.GAP_HANDLING_MOVE_ITEMS_BETWEEN_SPANS
+                        recyclerView.layoutManager = layoutManager
+                    }
+            else ->
+                if (currentManager == null) {
+                    if (!shouldBeCardView) {
+                        layoutManager = GridLayoutManager(this, calculateNoOfColumns())
+                        recyclerView.layoutManager = layoutManager
                     } else {
-            mLayoutManager = GridLayoutManager(this, calculateNoOfColumns())
+                        layoutManager = StaggeredGridLayoutManager(
+                                calculateNoOfColumns(),
+                                StaggeredGridLayoutManager.VERTICAL
+                        )
+                        layoutManager.gapStrategy = StaggeredGridLayoutManager.GAP_HANDLING_MOVE_ITEMS_BETWEEN_SPANS
+                        recyclerView.layoutManager = layoutManager
                     }
-
-        recyclerView.layoutManager = mLayoutManager
-
-        if (!infiniteScroll) {
-            recyclerView.setHasFixedSize(true)
                 } else {
-            handleInfiniteScroll()
+                    Unit
+                }
+        }
     }
 
-        handleBottomBarActions(mLayoutManager)
+    private fun handleBottomBarActions() {
-    }
-
-    private fun handleBottomBarActions(mLayoutManager: RecyclerView.LayoutManager) {
         bottomBar.setTabSelectedListener(object : BottomNavigationBar.OnTabSelectedListener {
             override fun onTabUnselected(position: Int) = Unit
 
-            override fun onTabReselected(position: Int) =
+            override fun onTabReselected(position: Int) {
-                    when (mLayoutManager) {
+                val layoutManager = recyclerView.adapter
+
+                when (layoutManager) {
                     is StaggeredGridLayoutManager ->
-                            if (mLayoutManager.findFirstCompletelyVisibleItemPositions(null)[0] == 0) {
+                        if (layoutManager.findFirstCompletelyVisibleItemPositions(null)[0] == 0) {
                             getElementsAccordingToTab()
                         } else {
-                                mLayoutManager.scrollToPositionWithOffset(0, 0)
+                            layoutManager.scrollToPositionWithOffset(0, 0)
                         }
                     is GridLayoutManager ->
-                            if (mLayoutManager.findFirstCompletelyVisibleItemPosition() == 0) {
+                        if (layoutManager.findFirstCompletelyVisibleItemPosition() == 0) {
                             getElementsAccordingToTab()
                         } else {
-                                mLayoutManager.scrollToPositionWithOffset(0, 0)
+                            layoutManager.scrollToPositionWithOffset(0, 0)
                         }
                     else -> Unit
                 }
+            }
 
             override fun onTabSelected(position: Int) {
                 offset = 0
@@ -739,25 +769,21 @@ class HomeActivity : AppCompatActivity(), SearchView.OnQueryTextListener {
             call: (String?, Long?, String?) -> Call<List<Item>>
     ) {
         fun handleItemsResponse(response: Response<List<Item>>) {
-            val didUpdate = (response.body() != items)
+            val shouldUpdate = (response.body() != items)
             if (response.body() != null) {
-                if (response.body() != items) {
+                if (shouldUpdate) {
-                    if (appendResults) {
-                        items.addAll(response.body() as ArrayList<Item>)
-                    } else {
                     items = response.body() as ArrayList<Item>
                 }
-                }
             } else {
                 if (!appendResults) {
                     items = ArrayList()
                 }
             }
-            if (didUpdate) {
+            if (shouldUpdate) {
                 handleListResult(appendResults)
             }
 
-            mayBeEmpty()
+            if (!appendResults) mayBeEmpty()
             swipeRefreshLayout.isRefreshing = false
         }
 
@@ -836,11 +862,9 @@ class HomeActivity : AppCompatActivity(), SearchView.OnQueryTextListener {
             }
         }
 
-        reloadLayoutManager()
+        if (recyclerAdapter == null) {
-
-        val mAdapter: RecyclerView.Adapter<*>
             if (shouldBeCardView) {
-            mAdapter =
+                recyclerAdapter =
                         ItemCardAdapter(
                                 this,
                                 items,
@@ -854,7 +878,7 @@ class HomeActivity : AppCompatActivity(), SearchView.OnQueryTextListener {
                                 userIdentifier
                         )
             } else {
-            mAdapter =
+                recyclerAdapter =
                         ItemListAdapter(
                                 this,
                                 items,
@@ -874,11 +898,13 @@ class HomeActivity : AppCompatActivity(), SearchView.OnQueryTextListener {
                         )
                 )
             }
-        recyclerView.adapter = mAdapter
+            recyclerView.adapter = recyclerAdapter
-        mAdapter.notifyDataSetChanged()
+        } else {
-
+            if (!appendResults) {
-        if (appendResults) {
+                (recyclerAdapter as ItemsAdapter<*>).updateAllItems(items)
-            recyclerView.scrollToPosition(firstVisible!!)
+            } else {
+                (recyclerAdapter as ItemsAdapter<*>).addItemsAtEnd(items)
+            }
         }
 
         reloadBadges()

app/src/main/java/apps/amine/bou/readerforselfoss/adapters/ItemCardAdapter.kt

@@ -40,17 +40,17 @@ import retrofit2.Callback
 import retrofit2.Response
 
 class ItemCardAdapter(
-        private val app: Activity,
+        override val app: Activity,
-        private val items: ArrayList<Item>,
+        override var items: ArrayList<Item>,
-        private val api: SelfossApi,
+        override val api: SelfossApi,
         private val helper: CustomTabActivityHelper,
         private val internalBrowser: Boolean,
         private val articleViewer: Boolean,
         private val fullHeightCards: Boolean,
         private val appColors: AppColors,
-        val debugReadingItems: Boolean,
+        override val debugReadingItems: Boolean,
-        val userIdentifier: String
+        override val userIdentifier: String
-) : RecyclerView.Adapter<ItemCardAdapter.ViewHolder>() {
+) : ItemsAdapter<ItemCardAdapter.ViewHolder>() {
     private val c: Context = app.baseContext
     private val generator: ColorGenerator = ColorGenerator.MATERIAL
     private val imageMaxHeight: Int = c.resources.getDimension(R.dimen.card_image_max_height).toInt()
@@ -103,86 +103,6 @@ class ItemCardAdapter(
         return items.size
     }
 
-    private fun doUnmark(i: Item, position: Int) {
-        val s = Snackbar
-                .make(
-                        app.findViewById(R.id.coordLayout),
-                        R.string.marked_as_read,
-                        Snackbar.LENGTH_LONG
-                )
-                .setAction(R.string.undo_string) {
-                    items.add(position, i)
-                    notifyItemInserted(position)
-
-                    api.unmarkItem(i.id).enqueue(object : Callback<SuccessResponse> {
-                        override fun onResponse(
-                                call: Call<SuccessResponse>,
-                                response: Response<SuccessResponse>
-                        ) {
-                        }
-
-                        override fun onFailure(call: Call<SuccessResponse>, t: Throwable) {
-                            items.remove(i)
-                            notifyItemRemoved(position)
-                            doUnmark(i, position)
-                        }
-                    })
-                }
-
-        val view = s.view
-        val tv: TextView = view.findViewById(android.support.design.R.id.snackbar_text)
-        tv.setTextColor(Color.WHITE)
-        s.show()
-    }
-
-    fun removeItemAtIndex(position: Int) {
-
-        val i = items[position]
-
-        items.remove(i)
-        notifyItemRemoved(position)
-
-        api.markItem(i.id).enqueue(object : Callback<SuccessResponse> {
-            override fun onResponse(
-                    call: Call<SuccessResponse>,
-                    response: Response<SuccessResponse>
-            ) {
-                if (!response.succeeded() && debugReadingItems) {
-                    val message =
-                            "message: ${response.message()} " +
-                                    "response isSuccess: ${response.isSuccessful} " +
-                                    "response code: ${response.code()} " +
-                                    "response message: ${response.message()} " +
-                                    "response errorBody: ${response.errorBody()?.string()} " +
-                                    "body success: ${response.body()?.success} " +
-                                    "body isSuccess: ${response.body()?.isSuccess}"
-                    Crashlytics.setUserIdentifier(userIdentifier)
-                    Crashlytics.log(100, "READ_DEBUG_SUCCESS", message)
-                    Crashlytics.logException(Exception("Was success, but did it work ?"))
-
-                    Toast.makeText(c, message, Toast.LENGTH_LONG).show()
-                }
-                doUnmark(i, position)
-            }
-
-            override fun onFailure(call: Call<SuccessResponse>, t: Throwable) {
-                if (debugReadingItems) {
-                    Crashlytics.setUserIdentifier(userIdentifier)
-                    Crashlytics.log(100, "READ_DEBUG_ERROR", t.message)
-                    Crashlytics.logException(t)
-                    Toast.makeText(c, t.message, Toast.LENGTH_LONG).show()
-                }
-                Toast.makeText(
-                        app,
-                        app.getString(R.string.cant_mark_read),
-                        Toast.LENGTH_SHORT
-                ).show()
-                items.add(i)
-                notifyItemInserted(position)
-            }
-        })
-    }
-
     inner class ViewHolder(val mView: CardView) : RecyclerView.ViewHolder(mView) {
         init {
             mView.setCardBackgroundColor(appColors.cardBackground)

app/src/main/java/apps/amine/bou/readerforselfoss/adapters/ItemListAdapter.kt

@@ -39,16 +39,16 @@ import java.util.*
 import kotlin.collections.ArrayList
 
 class ItemListAdapter(
-        private val app: Activity,
+        override val app: Activity,
-        private val items: ArrayList<Item>,
+        override var items: ArrayList<Item>,
-        private val api: SelfossApi,
+        override val api: SelfossApi,
         private val helper: CustomTabActivityHelper,
         private val clickBehavior: Boolean,
         private val internalBrowser: Boolean,
         private val articleViewer: Boolean,
-        val debugReadingItems: Boolean,
+        override val debugReadingItems: Boolean,
-        val userIdentifier: String
+        override val userIdentifier: String
-) : RecyclerView.Adapter<ItemListAdapter.ViewHolder>() {
+) : ItemsAdapter<ItemListAdapter.ViewHolder>() {
     private val generator: ColorGenerator = ColorGenerator.MATERIAL
     private val c: Context = app.baseContext
     private val bars: ArrayList<Boolean> = ArrayList(Collections.nCopies(items.size + 1, false))
@@ -119,84 +119,7 @@ class ItemListAdapter(
 
     override fun getItemCount(): Int = items.size
 
-    private fun doUnmark(i: Item, position: Int) {
-        val s = Snackbar
-                .make(
-                        app.findViewById(R.id.coordLayout),
-                        R.string.marked_as_read,
-                        Snackbar.LENGTH_LONG
-                )
-                .setAction(R.string.undo_string) {
-                    items.add(position, i)
-                    notifyItemInserted(position)
 
-                    api.unmarkItem(i.id).enqueue(object : Callback<SuccessResponse> {
-                        override fun onResponse(
-                                call: Call<SuccessResponse>,
-                                response: Response<SuccessResponse>
-                        ) {
-                        }
-
-                        override fun onFailure(call: Call<SuccessResponse>, t: Throwable) {
-                            items.remove(i)
-                            notifyItemRemoved(position)
-                            doUnmark(i, position)
-                        }
-                    })
-                }
-
-        val view = s.view
-        val tv: TextView = view.findViewById(android.support.design.R.id.snackbar_text)
-        tv.setTextColor(Color.WHITE)
-        s.show()
-    }
-
-    fun removeItemAtIndex(position: Int) {
-
-        val i = items[position]
-
-        items.remove(i)
-        notifyItemRemoved(position)
-
-        api.markItem(i.id).enqueue(object : Callback<SuccessResponse> {
-            override fun onResponse(
-                    call: Call<SuccessResponse>,
-                    response: Response<SuccessResponse>
-            ) {
-                if (!response.succeeded() && debugReadingItems) {
-                    val message =
-                            "message: ${response.message()} " +
-                                    "response isSuccess: ${response.isSuccessful} " +
-                                    "response code: ${response.code()} " +
-                                    "response message: ${response.message()} " +
-                                    "response errorBody: ${response.errorBody()?.string()} " +
-                                    "body success: ${response.body()?.success} " +
-                                    "body isSuccess: ${response.body()?.isSuccess}"
-                    Crashlytics.setUserIdentifier(userIdentifier)
-                    Crashlytics.log(100, "READ_DEBUG_SUCCESS", message)
-                    Crashlytics.logException(Exception("Was success, but did it work ?"))
-                    Toast.makeText(c, message, Toast.LENGTH_LONG).show()
-                }
-                doUnmark(i, position)
-            }
-
-            override fun onFailure(call: Call<SuccessResponse>, t: Throwable) {
-                if (debugReadingItems) {
-                    Crashlytics.setUserIdentifier(userIdentifier)
-                    Crashlytics.log(100, "READ_DEBUG_ERROR", t.message)
-                    Crashlytics.logException(t)
-                    Toast.makeText(c, t.message, Toast.LENGTH_LONG).show()
-                }
-                Toast.makeText(
-                        app,
-                        app.getString(R.string.cant_mark_read),
-                        Toast.LENGTH_SHORT
-                ).show()
-                items.add(i)
-                notifyItemInserted(position)
-            }
-        })
-    }
 
     inner class ViewHolder(val mView: ConstraintLayout) : RecyclerView.ViewHolder(mView) {
 
@@ -312,4 +235,6 @@ class ItemListAdapter(
             }
         }
     }
+
+
 }

app/src/main/java/apps/amine/bou/readerforselfoss/adapters/ItemsAdapter.kt

@@ -0,0 +1,121 @@
+package apps.amine.bou.readerforselfoss.adapters
+
+import android.app.Activity
+import android.graphics.Color
+import android.support.design.widget.Snackbar
+import android.support.v7.widget.RecyclerView
+import android.widget.TextView
+import android.widget.Toast
+import apps.amine.bou.readerforselfoss.R
+import apps.amine.bou.readerforselfoss.api.selfoss.Item
+import apps.amine.bou.readerforselfoss.api.selfoss.SelfossApi
+import apps.amine.bou.readerforselfoss.api.selfoss.SuccessResponse
+import apps.amine.bou.readerforselfoss.utils.succeeded
+import com.crashlytics.android.Crashlytics
+import retrofit2.Call
+import retrofit2.Callback
+import retrofit2.Response
+
+abstract class ItemsAdapter<VH : RecyclerView.ViewHolder?> : RecyclerView.Adapter<VH>() {
+    abstract var items: ArrayList<Item>
+    abstract val api: SelfossApi
+    abstract val debugReadingItems: Boolean
+    abstract val userIdentifier: String
+    abstract val app: Activity
+
+    fun updateAllItems(newItems: ArrayList<Item>) {
+        items = newItems
+        notifyDataSetChanged()
+    }
+
+    private fun doUnmark(i: Item, position: Int) {
+        val s = Snackbar
+                .make(
+                        app.findViewById(R.id.coordLayout),
+                        R.string.marked_as_read,
+                        Snackbar.LENGTH_LONG
+                )
+                .setAction(R.string.undo_string) {
+                    items.add(position, i)
+                    notifyItemInserted(position)
+
+                    api.unmarkItem(i.id).enqueue(object : Callback<SuccessResponse> {
+                        override fun onResponse(
+                                call: Call<SuccessResponse>,
+                                response: Response<SuccessResponse>
+                        ) {
+                        }
+
+                        override fun onFailure(call: Call<SuccessResponse>, t: Throwable) {
+                            items.remove(i)
+                            notifyItemRemoved(position)
+                            doUnmark(i, position)
+                        }
+                    })
+                }
+
+        val view = s.view
+        val tv: TextView = view.findViewById(android.support.design.R.id.snackbar_text)
+        tv.setTextColor(Color.WHITE)
+        s.show()
+    }
+
+    fun removeItemAtIndex(position: Int) {
+
+        val i = items[position]
+
+        items.remove(i)
+        notifyItemRemoved(position)
+
+        api.markItem(i.id).enqueue(object : Callback<SuccessResponse> {
+            override fun onResponse(
+                    call: Call<SuccessResponse>,
+                    response: Response<SuccessResponse>
+            ) {
+                if (!response.succeeded() && debugReadingItems) {
+                    val message =
+                            "message: ${response.message()} " +
+                                    "response isSuccess: ${response.isSuccessful} " +
+                                    "response code: ${response.code()} " +
+                                    "response message: ${response.message()} " +
+                                    "response errorBody: ${response.errorBody()?.string()} " +
+                                    "body success: ${response.body()?.success} " +
+                                    "body isSuccess: ${response.body()?.isSuccess}"
+                    Crashlytics.setUserIdentifier(userIdentifier)
+                    Crashlytics.log(100, "READ_DEBUG_SUCCESS", message)
+                    Crashlytics.logException(Exception("Was success, but did it work ?"))
+
+                    Toast.makeText(app.baseContext, message, Toast.LENGTH_LONG).show()
+                }
+                doUnmark(i, position)
+            }
+
+            override fun onFailure(call: Call<SuccessResponse>, t: Throwable) {
+                if (debugReadingItems) {
+                    Crashlytics.setUserIdentifier(userIdentifier)
+                    Crashlytics.log(100, "READ_DEBUG_ERROR", t.message)
+                    Crashlytics.logException(t)
+                    Toast.makeText(app.baseContext, t.message, Toast.LENGTH_LONG).show()
+                }
+                Toast.makeText(
+                        app,
+                        app.getString(R.string.cant_mark_read),
+                        Toast.LENGTH_SHORT
+                ).show()
+                items.add(i)
+                notifyItemInserted(position)
+            }
+        })
+    }
+
+    fun addItemAtIndex(item: Item, position: Int) {
+        items.add(position, item)
+        notifyItemInserted(position)
+    }
+
+    fun addItemsAtEnd(newItems: List<Item>) {
+        val oldSize = items.size
+        items.addAll(newItems)
+        notifyItemRangeInserted(oldSize, newItems.size)
+    }
+}

app/src/main/java/apps/amine/bou/readerforselfoss/api/mercury/MercuryModels.kt

@@ -6,9 +6,9 @@ import com.google.gson.annotations.SerializedName
 
 class ParsedContent(
         @SerializedName("title") val title: String,
-        @SerializedName("content") val content: String,
+        @SerializedName("content") val content: String?,
         @SerializedName("date_published") val date_published: String,
-        @SerializedName("lead_image_url") val lead_image_url: String,
+        @SerializedName("lead_image_url") val lead_image_url: String?,
         @SerializedName("dek") val dek: String,
         @SerializedName("url") val url: String,
         @SerializedName("domain") val domain: String,

app/src/main/java/apps/amine/bou/readerforselfoss/fragments/ArticleFragment.kt

@@ -164,14 +164,14 @@ class ArticleFragment : Fragment() {
                             response: Response<ParsedContent>
                     ) {
                         try {
-                            if (response.body() != null && response.body()!!.content != null && response.body()!!.content.isNotEmpty()) {
+                            if (response.body() != null && response.body()!!.content != null && !response.body()!!.content.isNullOrEmpty()) {
                                 rootView.source.text = response.body()!!.domain
                                 rootView.titleView.text = response.body()!!.title
                                 url = response.body()!!.url
 
-                                htmlToWebview(response.body()!!.content, prefs)
+                                htmlToWebview(response.body()!!.content.orEmpty(), prefs)
 
-                                if (response.body()!!.lead_image_url != null && !response.body()!!.lead_image_url.isEmpty()) {
+                                if (response.body()!!.lead_image_url != null && !response.body()!!.lead_image_url.isNullOrEmpty()) {
                                     rootView.imageView.visibility = View.VISIBLE
                                     Glide
                                             .with(activity!!.baseContext)