哈哈哈就只会回这句，实现如下
首先要在app/build.gradle中加依赖库
compile 'com.android.support:recyclerview-v7:23.4.0'要跟上面一样版本
接着主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="match_parent"
android:background="#d8e0e8"
android:orientation="vertical">
<android.support.v7.widget.RecyclerView
android:id="@+id/msg_recyclear_view"
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/input_text"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:hint="来撩我啊 (●'◡'●)ﾉ♥ "
android:maxLines="2" />
<Button
android:id="@+id/send"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="骚他/她" />
</LinearLayout>
</LinearLayout>package com.graduationdesign.pxc.wefuck;
import java.security.PublicKey;
public class Msg {
public static final int TYPE_RECIVED = 0;
public static final int TYPE_SENT = 1;
private String content;
private int type;
public Msg(String content, int type) {
this.content = content;//消息内容
this.type = type;//消息类型
}
public String getContent() {
return content;
}
public int getType() {
return type;
}
}<?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:orientation="vertical"
android:padding="10dp">
<LinearLayout
android:id="@+id/left_layout"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="left"
android:background="@drawable/message_left">
<TextView
android:id="@+id/left_msg"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_margin="10dp"
android:textColor="#000"
/>
</LinearLayout>
<LinearLayout
android:id="@+id/right_layout"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="right"
android:background="@drawable/message_right">
<TextView
android:id="@+id/right_msg"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_margin="10dp"
android:textColor="#000"
/>
</LinearLayout>
</LinearLayout>package com.graduationdesign.pxc.wefuck;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.LinearLayout;
import android.widget.TextView;
import java.util.List;
public class MsgAdapter extends RecyclerView.Adapter<MsgAdapter.ViewHolder>{
private List<Msg> mMsgList;
static class ViewHolder extends RecyclerView.ViewHolder{
LinearLayout leftLayout;
LinearLayout rightLayout;
TextView leftMsg;
TextView rightMsg;
public ViewHolder(View view){
super(view);
leftLayout=(LinearLayout)view.findViewById(R.id.left_layout);
rightLayout=(LinearLayout)view.findViewById(R.id.right_layout);
leftMsg=(TextView)view.findViewById(R.id.left_msg);
rightMsg=(TextView)view.findViewById(R.id.right_msg);
}
}
public MsgAdapter(List<Msg> msgList) {
mMsgList=msgList;
}
@Override
public ViewHolder onCreateViewHolder(ViewGroup parent,int viewType){
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.msg_item,parent,false);
return new ViewHolder(view);
}
@Override
public void onBindViewHolder(ViewHolder holder, int position) {
Msg msg=mMsgList.get(position);
if (msg.getType()==Msg.TYPE_RECIVED){
//如果是收到的消息，则显示在左边的消息布局，将右边的消息布局隐藏
holder.leftLayout.setVisibility(View.VISIBLE);
holder.rightLayout.setVisibility(View.GONE);
holder.leftMsg.setText(msg.getContent());
}else if(msg.getType()==Msg.TYPE_SENT){
//如果是发出的消息，则显示在右边的消息布局，将左边的消息布局隐藏
holder.rightLayout.setVisibility(View.VISIBLE);
holder.leftLayout.setVisibility(View.GONE);
holder.rightMsg.setText(msg.getContent());
}
}
@Override
public int getItemCount() {
return mMsgList.size();
}
}
最后修改主类
package com.graduationdesign.pxc.wefuck;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import java.util.ArrayList;
import java.util.List;
public class MainActivity extends AppCompatActivity {
private List<Msg> msgList = new ArrayList<>();
private EditText inputText;
private Button send;
private RecyclerView msgRecyclerView;
private MsgAdapter adapter;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
initMsgs();//初始化消息数据
inputText = (EditText) findViewById(R.id.input_text);
send = (Button) findViewById(R.id.send);
msgRecyclerView = (RecyclerView) findViewById(R.id.msg_recyclear_view);
LinearLayoutManager layoutManager = new LinearLayoutManager(this);
msgRecyclerView.setLayoutManager(layoutManager);
adapter = new MsgAdapter(msgList);
msgRecyclerView.setAdapter(adapter);
send.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
String content = inputText.getText().toString();
String conre = "嗯，你多喝热水";
if (!"".equals(content)) {
Msg msg = new Msg(content, Msg.TYPE_SENT);
msgList.add(msg);
adapter.notifyItemInserted(msgList.size() - 1);//当有新消息时，刷新ListView中的显示
msgRecyclerView.scrollToPosition(msgList.size() - 1);//将ListView定位到最后一行
inputText.setText("");//清空输入框中的内容
Msg msg0 = new Msg(conre, Msg.TYPE_RECIVED);
msgList.add(msg0);
adapter.notifyItemInserted(msgList.size() - 1);//当有新消息时，刷新ListView中的显示
msgRecyclerView.scrollToPosition(msgList.size() - 1);//将ListView定位到最后一行
inputText.setText("");//清空输入框中的内容
}
}
});
}
private void initMsgs() {
Msg msg1 = new Msg("你好呀，小可爱。", Msg.TYPE_RECIVED);
msgList.add(msg1);
Msg msg2 = new Msg("弱弱的问，你谁啊？", Msg.TYPE_SENT);
msgList.add(msg2);
Msg msg3 = new Msg("你猜。", Msg.TYPE_RECIVED);
msgList.add(msg3);
}
}就这样，一个只会回复
"嗯，你多喝热水"的伪机器人聊天框就好了
