此篇文章紧做关于语音机器人聊天开发，后续功能实现请关注后续文章！！！
此篇文章完成后效果展示：
一.机器人聊天—对话adapter的实现
1.准备两张左右两边动画背景图片，做left，和right两边布局，为Recyclerview的实现做准备。
left_item.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center_vertical"
android:orientation="horizontal">
<ImageView
android:layout_width="50dp"
android:layout_height="50dp"
android:layout_marginLeft="10dp"
android:src="@drawable/assistant"/>
<TextView
android:id="@+id/tv_left_text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="10dp"
android:background="@drawable/chat_bg_cloud"
android:gravity="center_vertical"
android:padding="20dp"
android:textColor="@android:color/white"/>
</LinearLayout>
right_item.xml:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="right|center_vertical"
android:orientation="horizontal">
<TextView
android:id="@+id/tv_right_text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginRight="10dp"
android:background="@drawable/chat_bg_user"
android:gravity="center_vertical"
android:padding="20sp"
android:textColor="@android:color/white"/>
<ImageView
android:layout_width="50dp"
android:layout_height="50dp"
android:layout_marginRight="10dp"
android:src="@drawable/user"/>
</LinearLayout>
2.在entity包下ChatListData对话列表的实体类，代码如下：
package com.zrc.smartbutler.entity
class ChatListData(var type:Int,var context:String){
companion object{
const val TyPE_RECEIVED = 0
const val Type_SENT = 1
}
}
3.在adapter包下创建ChatListAdapter对话Adapter，代码如下：
package com.zrc.smartbutler.adapter
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import android.widget.TextView
import androidx.recyclerview.widget.RecyclerView
import com.zrc.smartbutler.R
import com.zrc.smartbutler.entity.ChatListData
class ChatListAdapter (val mList:List<ChatListData>): RecyclerView.Adapter<RecyclerView.ViewHolder>() {
inner class LeftViewHolder(view:View):RecyclerView.ViewHolder(view){
val leftMsg:TextView = view.findViewById(R.id.tv_left_text)
}
inner class RightViewHolder(view:View):RecyclerView.ViewHolder(view){
val rightMsg:TextView = view.findViewById(R.id.tv_right_text)
}
override fun getItemViewType(position: Int): Int {
val msg = mList[position]
return msg.type
}
override fun onCreateViewHolder(parent: ViewGroup, viewType: Int) = if(viewType==ChatListData.TyPE_RECEIVED){
val view = LayoutInflater.from(parent.context).inflate(R.layout.left_item,parent,false)
LeftViewHolder(view)
}else{
val view = LayoutInflater.from(parent.context).inflate(R.layout.right_item,parent,false)
RightViewHolder(view)
}
override fun getItemCount() = mList.size
override fun onBindViewHolder(holder: RecyclerView.ViewHolder, position: Int) {
val msg = mList[position]
when(holder){
is LeftViewHolder -> holder.leftMsg.text = msg.context
is RightViewHolder -> holder.rightMsg.text = msg.context
else -> throw IllegalArgumentException()
}
}
}
这段代码，仿写自郭霖大神的第一行代码(第三版)，详情解析，请查看第三行代码！
至此，对话adapter完成！！！
二.机器人聊天—机器人实时对话实现
1.导入RecyclerView依赖
implementation 'androidx.recyclerview:recyclerview:1.1.02.前往fragment_butler.xml，编写界面交互代码：
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@drawable/wechat_bg"
android:orientation="vertical">
<androidx.recyclerview.widget.RecyclerView
android:id="@+id/recyclerView"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"/>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<EditText
android:id="@+id/inputText"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:hint="输入"
android:maxLines="2"/>
<Button
android:id="@+id/send"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="5dp"
android:background="@drawable/button_bg"
android:text="发送"/>
</LinearLayout>
</LinearLayout>
3.编写Kotlin交互代码：
package com.zrc.smartbutler.fragment
import android.os.Bundle
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import android.widget.Toast
import androidx.fragment.app.Fragment
import androidx.recyclerview.widget.LinearLayoutManager
import com.kymjs.rxvolley.RxVolley
import com.kymjs.rxvolley.client.HttpCallback
import com.zrc.smartbutler.R
import com.zrc.smartbutler.adapter.ChatListAdapter
import com.zrc.smartbutler.entity.ChatListData
import com.zrc.smartbutler.utils.StaticClass
import kotlinx.android.synthetic.main.fragment_butler.view.*
import org.json.JSONException
import org.json.JSONObject
class ButlerFragment:Fragment() {
private val msgList = ArrayList<ChatListData>()
private var adapter:ChatListAdapter?= null
override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
val view:View = inflater.inflate(R.layout.fragment_butler,null)
findView()
val layoutManager = LinearLayoutManager(this.context)
view.recyclerView.layoutManager = layoutManager
adapter = ChatListAdapter(msgList)
view.recyclerView.adapter = adapter
view.send.setOnClickListener {
//1.获取输入框的内容
val content = view.inputText.text.toString()
//2.判断是否为空
if(content.isNotEmpty()){
//3.判断长度不能大于30
if(content.length>30){
Toast.makeText(activity,"输入长度超出限制",Toast.LENGTH_SHORT).show()
}else{
//4.添加你输入的内容到right item
val msg = ChatListData(ChatListData.Type_SENT,content)
msgList.add(msg)
adapter?.notifyItemInserted(msgList.size-1)//当有新消息时，刷新RecycleView中的显示
view.recyclerView.scrollToPosition(msgList.size-1)//讲RecycleView定位到最后一行
//5.清空当前的输入框
view.inputText.setText("")
//6.发送给机器人请求返回内容
//6.发送给机器人请求返回内容
val url = ("http://op.juhe.cn/robot/index?info=" + content + "&key=" + StaticClass().CHAT_LIST_KEY)
RxVolley.get(url,object :HttpCallback(){
override fun onSuccess(t: String?) {
//Toast.makeText(activity,t,Toast.LENGTH_SHORT).show()
parsingJson(t!!,view)
}
})
}
}else{
Toast.makeText(activity,"输入框不能为空",Toast.LENGTH_SHORT).show()
}
}
return view
}
private fun findView() {
val msg1 = ChatListData(ChatListData.TyPE_RECEIVED,"你好,我是大雨子！！！")
msgList.add(msg1)
}
//解析Json
private fun parsingJson(t: String,view: View) {
try {
val jsonObhect = JSONObject(t)
val jsonresult = jsonObhect.getJSONObject("result")
//拿到返回值
val text = jsonresult.getString("text")
//7.拿到机器人的返回值之后添加在left item
val msg = ChatListData(ChatListData.TyPE_RECEIVED,text)
msgList.add(msg)
adapter?.notifyItemInserted(msgList.size-1)//当有新消息时，刷新RecycleView中的显示
view.recyclerView.scrollToPosition(msgList.size-1)//讲RecycleView定位到最后一行
} catch (e: JSONException) {
e.printStackTrace()
}
}
}
代码逻辑上面注释已经写清楚了，就不多赘述！！！
至此，机器人的对话实现！！！
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