修改recycleview的加载更多为到底部的居中

app/src/main/java/cn/finalteam/loadingviewfinal/sample/ui/fragment/ptr/PtrRecyclerViewFragment.java

@@ -2,7 +2,7 @@
 
 import android.os.Bundle;
 import android.support.annotation.Nullable;
-import android.support.v7.widget.LinearLayoutManager;
+import android.support.v7.widget.GridLayoutManager;
 import android.view.View;
 import android.widget.FrameLayout;
 import android.widget.Toast;
@@ -61,9 +61,16 @@ public void onViewCreated(View view, @Nullable Bundle savedInstanceState) {
 
         mGameList = new ArrayList<>();
         mNewGameRvAdapter = new NewGameRvAdapter(getContext(), mGameList);
-        LinearLayoutManager linearLayoutManager = new LinearLayoutManager(getContext());
-        linearLayoutManager.setOrientation(LinearLayoutManager.VERTICAL);
-        mRvGames.setLayoutManager(linearLayoutManager);
+        //        LinearLayoutManager linearLayoutManager = new LinearLayoutManager(getContext());
+//        linearLayoutManager.setOrientation(LinearLayoutManager.VERTICAL);
+//        mRvGames.setLayoutManager(linearLayoutManager);
+        //        mRvGames.setLayoutManager(linearLayoutManager);
+        GridLayoutManager gridLayoutManager= new GridLayoutManager(getContext(), 2,
+                GridLayoutManager.VERTICAL, false);
+// 设置布局管理器
+        mRvGames.setLayoutManager(gridLayoutManager);
+//        mRvGames.setLayoutManager(new StaggeredGridLayoutManager(2,
+//                StaggeredGridLayoutManager.VERTICAL));
         mRvGames.setEmptyView(mFlEmptyView);
         mRvGames.setAdapter(mNewGameRvAdapter);
 

build.gradle

@@ -5,7 +5,7 @@ buildscript {
         jcenter()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:2.0.0-beta7'
+        classpath 'com.android.tools.build:gradle:2.1.2'
 
         classpath 'com.github.dcendents:android-maven-gradle-plugin:1.3'
         classpath 'com.jfrog.bintray.gradle:gradle-bintray-plugin:1.6'

loading-more-view/src/main/java/cn/finalteam/loadingviewfinal/HeaderAndFooterRecyclerViewAdapter.java

@@ -1,5 +1,6 @@
 package cn.finalteam.loadingviewfinal;
 
+import android.support.v7.widget.GridLayoutManager;
 import android.support.v7.widget.RecyclerView;
 import android.support.v7.widget.StaggeredGridLayoutManager;
 import android.view.View;
@@ -63,7 +64,43 @@ public void setAdapter(RecyclerView.Adapter<RecyclerView.ViewHolder> adapter) {
             notifyItemRangeInserted(getHeadersCount(), mAdapter.getItemCount());
         }
     }
+    @Override
+    public void onAttachedToRecyclerView(RecyclerView recyclerView) {
+//        Log.e("HeaderAdapter", "onAttachedToRecyclerView");
+        super.onAttachedToRecyclerView(recyclerView);
+        final RecyclerView.LayoutManager layoutManager = recyclerView.getLayoutManager();
+        if (layoutManager instanceof GridLayoutManager) {
+            final GridLayoutManager gridLayoutManager = (GridLayoutManager) layoutManager;
+            gridLayoutManager.setSpanSizeLookup(new GridLayoutManager.SpanSizeLookup() {
+                @Override
+                public int getSpanSize(int position) {
+                    int result = 1;
+                    int viewType = getItemViewType(position);
+                    if (mFooterViewTypes.contains(viewType)) {
+                        result = ((GridLayoutManager) layoutManager).getSpanCount();
+                    } else if (mHeaderViews.contains(viewType)) {
+                        result = ((GridLayoutManager) layoutManager).getSpanCount();
+                    }
+//                    Log.e("HeaderAdapter", "onAttachedToRecyclerView getSpanSize==" + result);
+                    return result;
+                }
+            });
+        }
+    }
 
+    @Override
+    public void onViewAttachedToWindow(RecyclerView.ViewHolder holder) {
+        int position = holder.getLayoutPosition();
+        int viewType = getItemViewType(position);
+        if (mFooterViewTypes.contains(viewType) || mHeaderViews.contains(viewType)) {
+            ViewGroup.LayoutParams lp = holder.itemView.getLayoutParams();
+            if (lp != null
+                    && lp instanceof StaggeredGridLayoutManager.LayoutParams) {
+                StaggeredGridLayoutManager.LayoutParams p = (StaggeredGridLayoutManager.LayoutParams) lp;
+                p.setFullSpan(true);
+            }
+        }
+    }
     /**
      * @return RecyclerView.Adapter
      */

loading-more-view/src/main/java/cn/finalteam/loadingviewfinal/RecyclerViewFinal.java

@@ -125,6 +125,7 @@ public void setAdapter(RecyclerView.Adapter adapter) {
 
         adapter.registerAdapterDataObserver(mDataObserver);
         mHeaderAndFooterRecyclerViewAdapter.setAdapter(adapter);
+        mHeaderAndFooterRecyclerViewAdapter.onAttachedToRecyclerView(this);//手动调用
     }
 
     @Override