add set recycler view

softrunapp · Oct 14, 2019 · 9ef8e52 · 9ef8e52
1 parent 62fe61c
commit 9ef8e52
Showing 1 changed file with 74 additions and 10 deletions.
diff --git a/...tedrecyclerview/src/main/java/com/softrunapps/paginatedrecyclerview/PaginatedAdapter.java b/...tedrecyclerview/src/main/java/com/softrunapps/paginatedrecyclerview/PaginatedAdapter.java
@@ -1,8 +1,13 @@
 package com.softrunapps.paginatedrecyclerview;
 
+import android.app.Activity;
+import android.content.Context;
+import android.os.Debug;
+import android.util.Log;
 import android.view.ViewGroup;
 
 import androidx.annotation.NonNull;
+import androidx.recyclerview.widget.LinearLayoutManager;
 import androidx.recyclerview.widget.RecyclerView;
 
 import java.util.ArrayList;
@@ -12,8 +17,12 @@
 public abstract class PaginatedAdapter<ITEM, VH extends RecyclerView.ViewHolder> extends RecyclerView.Adapter<VH> {
     private List<ITEM> mDataSet = new ArrayList<>();
     private OnPaginationListener mListener;
-    private int mFirstPage = 1;
-    private int mItemCount = 10;
+    private int mStartPage = 1;
+    private int mCurrentPage = 1;
+    private int mPageSize = 10;
+    private RecyclerView mRecyclerView;
+    private boolean loadingNewItems = true;
+
 
     @NonNull
     public abstract VH onCreateViewHolder(@NonNull ViewGroup parent, int viewType);
@@ -28,8 +37,9 @@ public void submitItems(Collection<? extends ITEM> collection) {
         mDataSet.addAll(collection);
         notifyDataSetChanged();
         if (mListener != null) {
-            if (collection.size() == mItemCount) {
-                mListener.onNextPage(++mFirstPage);
+            if (collection.size() == mPageSize) {
+                mListener.onNextPage(++mCurrentPage);
+                loadingNewItems = false;
             } else {
                 mListener.onFinish();
             }
@@ -40,16 +50,70 @@ protected ITEM getItem(int position) {
         return mDataSet.get(position);
     }
 
-    public void setFirstPage(int mFirstPage) {
-        this.mFirstPage = mFirstPage;
+    public void setStartPage(int mFirstPage) {
+        this.mStartPage = mFirstPage;
+        this.mCurrentPage = mFirstPage;
+    }
+
+    public int getStartPage() {
+        return mStartPage;
+    }
+
+    public int getCurrentPage() {
+        return mCurrentPage;
+    }
+
+    public RecyclerView getRecyclerView() {
+        return mRecyclerView;
+    }
+
+    public void setRecyclerView(RecyclerView recyclerView) {
+        this.mRecyclerView = recyclerView;
+        initPaginating();
+        setAdapter();
+    }
+
+    public void setDefaultRecyclerView(Activity activity, int recyclerViewId) {
+        RecyclerView recyclerView = activity.findViewById(recyclerViewId);
+        recyclerView.setLayoutManager(new LinearLayoutManager(activity));
+        recyclerView.setHasFixedSize(true);
+        this.mRecyclerView = recyclerView;
+        initPaginating();
+        setAdapter();
+    }
+
+    private void setAdapter() {
+        mRecyclerView.setAdapter(this);
     }
 
-    public int getFirstPage() {
-        return mFirstPage;
+    public void setItemCount(int pageSize) {
+        this.mPageSize = pageSize;
     }
 
-    public void setItemCount(int mItemCount) {
-        this.mItemCount = mItemCount;
+    private void initPaginating() {
+        mRecyclerView.addOnScrollListener(new RecyclerView.OnScrollListener() {
+            @Override
+            public void onScrollStateChanged(RecyclerView recyclerView, int newState) {
+                super.onScrollStateChanged(recyclerView, newState);
+            }
+
+            @Override
+            public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
+                super.onScrolled(recyclerView, dx, dy);
+                LinearLayoutManager layoutManager = LinearLayoutManager.class.cast(mRecyclerView.getLayoutManager());
+                int totalItemCount = layoutManager.getItemCount();
+                int lastVisible = layoutManager.findLastVisibleItemPosition();
+                boolean endHasBeenReached = lastVisible + 2 >= totalItemCount;
+                if (totalItemCount > 0 && endHasBeenReached) {
+                    if (mListener != null) {
+                        if (!loadingNewItems) {
+                            loadingNewItems = true;
+                            mListener.onNextPage(mCurrentPage);
+                        }
+                    }
+                }
+            }
+        });
     }
 
     public void setOnPaginationListener(OnPaginationListener onPaginationListener) {