调整直播间聊天室动画效果

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

@@ -383,6 +383,7 @@ public class LiveChatAdapter extends RecyclerView.Adapter {
         if (bean == null) {
             return;
         }
+       // Log.i(TAG, "insertItem: " + bean.getContent());
         int size = mList.size();
         //设置最大展示99条消息
         if (size == 100) {

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

@@ -0,0 +1,40 @@
+package com.yunbao.live.adapter;
+
+import android.content.Context;
+import android.graphics.PointF;
+import android.util.DisplayMetrics;
+
+import androidx.annotation.Nullable;
+import androidx.recyclerview.widget.LinearLayoutManager;
+import androidx.recyclerview.widget.LinearSmoothScroller;
+import androidx.recyclerview.widget.RecyclerView;
+
+public class LiveChatRecyclerViewLayoutManager extends LinearLayoutManager {
+    private static final float MILLISECONDS_PER_INCH = 200f;
+    public LiveChatRecyclerViewLayoutManager(Context context) {
+        super(context);
+    }
+
+    @Override
+    public void smoothScrollToPosition(RecyclerView recyclerView, RecyclerView.State state, int position) {
+     //   super.smoothScrollToPosition(recyclerView, state, position);
+        LinearSmoothScroller linearSmoothScroller = new LinearSmoothScroller(recyclerView.getContext())
+        {
+
+            @Nullable
+            @Override
+            public PointF computeScrollVectorForPosition(int targetPosition) {
+                return LiveChatRecyclerViewLayoutManager.this.computeScrollVectorForPosition(targetPosition);
+            }
+
+            @Override
+            protected float calculateSpeedPerPixel(DisplayMetrics displayMetrics) {
+               // System.out.println("----->自定义滑动 = "+MILLISECONDS_PER_INCH+" > "+( MILLISECONDS_PER_INCH / displayMetrics.densityDpi));
+                return MILLISECONDS_PER_INCH / displayMetrics.densityDpi;
+            }
+
+        };
+        linearSmoothScroller.setTargetPosition(position);
+        startSmoothScroll(linearSmoothScroller);
+    }
+}

live/src/main/java/com/yunbao/live/views/LiveRoomViewHolder.java

@@ -16,7 +16,6 @@ import android.text.TextUtils;
 import android.util.Log;
 import android.view.Gravity;
 import android.view.LayoutInflater;
-import android.view.MotionEvent;
 import android.view.View;
 import android.view.ViewGroup;
 import android.view.ViewOutlineProvider;
@@ -37,6 +36,7 @@ import androidx.annotation.Nullable;
 import androidx.constraintlayout.widget.ConstraintLayout;
 import androidx.recyclerview.widget.LinearLayoutManager;
 import androidx.recyclerview.widget.RecyclerView;
+import androidx.recyclerview.widget.SimpleItemAnimator;
 
 import com.alibaba.fastjson.JSON;
 import com.alibaba.fastjson.JSONArray;
@@ -116,6 +116,7 @@ import com.yunbao.live.activity.LiveAudienceActivity;
 import com.yunbao.live.activity.LiveRyAnchorActivity;
 import com.yunbao.live.activity.ZhuangBanActivity;
 import com.yunbao.live.adapter.LiveChatAdapter;
+import com.yunbao.live.adapter.LiveChatRecyclerViewLayoutManager;
 import com.yunbao.live.adapter.LiveRoomFastMessageRecyclerViewAdapter;
 import com.yunbao.live.adapter.LiveUserAdapter;
 import com.yunbao.live.bean.DrPkbean;
@@ -158,8 +159,6 @@ import java.net.URL;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.Locale;
-import java.util.Timer;
-import java.util.TimerTask;
 
 import io.reactivex.android.schedulers.AndroidSchedulers;
 import io.reactivex.schedulers.Schedulers;
@@ -868,11 +867,54 @@ public class LiveRoomViewHolder extends AbsViewHolder implements View.OnClickLis
         mChatRecyclerView.setLayoutParams(params1);
 
         mChatRecyclerView.setHasFixedSize(true);
-        LinearLayoutManager layoutManager = new LinearLayoutManager(mContext);
+        LinearLayoutManager layoutManager = new LiveChatRecyclerViewLayoutManager(mContext);
         layoutManager.setStackFromEnd(true);
         mChatRecyclerView.setLayoutManager(layoutManager);
         mChatRecyclerView.addItemDecoration(new TopGradual());
         mChatRecyclerView.setItemViewCacheSize(10);
+        mChatRecyclerView.setItemAnimator(new SimpleItemAnimator() {
+            @Override
+            public boolean animateRemove(RecyclerView.ViewHolder holder) {
+                return false;
+            }
+
+            @Override
+            public boolean animateAdd(RecyclerView.ViewHolder holder) {
+                Animation animation = AnimationUtils.loadAnimation(mContext, R.anim.live_chat_msg_in);
+                holder.itemView.startAnimation(animation);
+                return false;
+            }
+
+            @Override
+            public boolean animateMove(RecyclerView.ViewHolder holder, int fromX, int fromY, int toX, int toY) {
+                return false;
+            }
+
+            @Override
+            public boolean animateChange(RecyclerView.ViewHolder oldHolder, RecyclerView.ViewHolder newHolder, int fromLeft, int fromTop, int toLeft, int toTop) {
+                return false;
+            }
+
+            @Override
+            public void runPendingAnimations() {
+
+            }
+
+            @Override
+            public void endAnimation(@NonNull RecyclerView.ViewHolder item) {
+
+            }
+
+            @Override
+            public void endAnimations() {
+
+            }
+
+            @Override
+            public boolean isRunning() {
+                return false;
+            }
+        });
         mLiveChatAdapter = new LiveChatAdapter(mContext);
         mChatRecyclerView.setAdapter(mLiveChatAdapter);
         mLiveChatAdapter.setOnItemClickListener(new OnItemClickListener<LiveChatBean>() {
@@ -928,9 +970,10 @@ public class LiveRoomViewHolder extends AbsViewHolder implements View.OnClickLis
         mViewMedal.setOnClickListener(this);
         findViewById(R.id.btn_close).setOnClickListener(this);
         mAvatar.setOnClickListener(this);
-        //点击侧边消息按钮，自动发消息，测试用的
-        /*msg.setOnClickListener(new View.OnClickListener() {
+        /*//点击侧边消息按钮，自动发消息，测试用的
+        msg.setOnClickListener(new View.OnClickListener() {
             long index = 0;
+
             public TimerTask createTask() {
                 return new TimerTask() {
                     @Override
@@ -945,18 +988,21 @@ public class LiveRoomViewHolder extends AbsViewHolder implements View.OnClickLis
 
             Handler handler = new Handler(Looper.getMainLooper());
             private TimerTask task;
+
             @Override
             public void onClick(View v) {
                 if (task == null) {
                     task = createTask();
-                    new Timer().schedule(task, 0, 300);
+                    new Timer().schedule(task, 0, 1000);
                 } else {
                     task.cancel();
                     task = null;
                 }
             }
         });
-*/
+        userMore.setOnClickListener(v -> {
+            mLiveChatAdapter.scrollToBottom();
+        });*/
         findViewById(R.id.btn_votes).setOnClickListener(this);
         findViewById(R.id.btn_medal_rank).setOnClickListener(this);
         findViewById(R.id.btn_noble).setOnClickListener(this);

live/src/main/res/anim/live_chat_msg_in.xml

@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="utf-8"?>
+<set xmlns:android="http://schemas.android.com/apk/res/android">
+    <translate
+        android:interpolator="@android:anim/decelerate_interpolator"
+        android:duration="500"
+        android:fromAlpha="0.1"
+        android:toAlpha="1"
+        android:fromYDelta="2.5%p"
+        android:toYDelta="0" />
+    <alpha
+        android:interpolator="@android:anim/decelerate_interpolator"
+        android:duration="500"
+        android:fromAlpha="0.1"
+        android:toAlpha="1"
+        />
+</set>