修复直播间长期不动会自动停止滚动的问题

live/src/main/java/com/yunbao/live/adapter/LiveChatAdapter.java

@@ -12,6 +12,7 @@ import android.text.Spannable;
 import android.text.SpannableStringBuilder;
 import android.text.TextUtils;
 import android.text.style.ForegroundColorSpan;
+import android.util.Log;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
@@ -63,6 +64,7 @@ public class LiveChatAdapter extends RecyclerView.Adapter {
     private LinearLayoutManager mLayoutManager;
 
     private IMLoginModel model;
+    private int mRecyclerViewScrolledDx, mRecyclerViewScrolledDy;
 
     private int mPosition;
 
@@ -121,6 +123,15 @@ public class LiveChatAdapter extends RecyclerView.Adapter {
     public void onAttachedToRecyclerView(@NonNull RecyclerView recyclerView) {
         mRecyclerView = recyclerView;
         mLayoutManager = (LinearLayoutManager) recyclerView.getLayoutManager();
+        mRecyclerView.addOnScrollListener(new RecyclerView.OnScrollListener() {
+            @Override
+            public void onScrolled(@NonNull RecyclerView recyclerView, int dx, int dy) {
+                super.onScrolled(recyclerView, dx, dy);
+                mRecyclerViewScrolledDx = dx;
+                mRecyclerViewScrolledDy = dy;
+                Log.i(TAG, "onScrolled:  dx = " + dx + ", dy = " + dy);
+            }
+        });
     }
 
     class RedPackVh extends RecyclerView.ViewHolder {
@@ -379,8 +390,15 @@ public class LiveChatAdapter extends RecyclerView.Adapter {
             mList.remove(0);
         }
         mList.add(bean);
-
-        if (isSlideToBottom(mRecyclerView)) {
+        int sum = (mRecyclerView.computeVerticalScrollExtent() + mRecyclerView.computeVerticalScrollOffset());
+        Log.i(TAG, "Extent=" + mRecyclerView.computeVerticalScrollExtent() +
+                "|Offset=" + mRecyclerView.computeVerticalScrollOffset() +
+                "|sum=" + sum +
+                "|Range=" + mRecyclerView.computeVerticalScrollRange() +
+                "|content=" + bean.getContent() +
+                ((sum >= mRecyclerView.computeVerticalScrollRange()) ? "" : "|停止滑动")
+        );
+        if (isSlideToBottom(mRecyclerView) || mRecyclerViewScrolledDy == 0) {
             scrollToBottom(mRecyclerView);
         } else {
             Bus.get().post(new LiveAudienceEvent()
@@ -409,6 +427,8 @@ public class LiveChatAdapter extends RecyclerView.Adapter {
         });
     }
 
+    String TAG = "聊天测试";
+
     /**
      * 判断是否滚到底部
      *