本文实例为大家分享了android Listview模拟聊天界面的具体代码，供大家参考，具体内容如下

代码：

package com.example.test;import android.os.Bundle;import android.support.v7.app.AppCompatActivity;import android.view.View;import android.view.ViewGroup;import android.widget.BaseAdapter;import android.widget.EditText;import android.widget.ListView;import android.widget.TextView;import android.widget.Toast;import java.util.ArrayList;import static com.example.test.R.id.tv_receive;import static com.example.test.R.id.tv_send;public class MainActivity extends AppCompatActivity { private ArrayList<Msg> msgs; private EditText et_input; private MyAdapter myAdapter; private ListView lv; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); lv = (ListView) findViewById(R.id.lv); et_input = (EditText) findViewById(R.id.et_input); findViewById(R.id.bt_send).setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { String content = et_input.getText().toString(); if (!content.isEmpty()) { msgs.add(new Msg(content, Msg.TYPE_SEND)); myAdapter.notifyDataSetChanged(); lv.setSelection(msgs.size() - 1); et_input.setText(""); } else { Toast.makeText(MainActivity.this, "请输入内容!", Toast.LENGTH_SHORT).show(); } } }); msgs = new ArrayList<>(); msgs.add(new Msg("hello", Msg.TYPE_RECEIVE)); msgs.add(new Msg("who is that?", Msg.TYPE_SEND)); msgs.add(new Msg("this is LiLei,nice to meet you!", Msg.TYPE_RECEIVE)); myAdapter = new MyAdapter(); lv.setAdapter(myAdapter); } private class MyAdapter extends BaseAdapter { @Override public int getCount() { return msgs.size(); } @Override public Msg getItem(int position) { return msgs.get(position); } @Override public long getItemId(int position) { return position; } @Override public View getView(int position, View convertView, ViewGroup parent) { ViewHolder holder; if (convertView == null) { holder = new ViewHolder(); convertView = View.inflate(getApplicationContext(), R.layout.listview_item, null); holder.tv_receive = (TextView) convertView.findViewById(tv_receive); holder.tv_send = (TextView) convertView.findViewById(tv_send); convertView.setTag(holder); } else { holder = (ViewHolder) convertView.getTag(); } Msg msg = getItem(position); if (msg.type == Msg.TYPE_RECEIVE) { holder.tv_receive.setVisibility(View.VISIBLE); holder.tv_send.setVisibility(View.GONE); holder.tv_receive.setText(msg.content); } else if (msg.type == Msg.TYPE_SEND) { holder.tv_send.setVisibility(View.VISIBLE); holder.tv_receive.setVisibility(View.GONE); holder.tv_send.setText(msg.content); } return convertView; } } private static class ViewHolder { TextView tv_receive; TextView tv_send; }}package com.example.test;/** * Created by My on 2017/3/3. */class Msg { static final int TYPE_RECEIVE = 1; static final int TYPE_SEND = 2; String content; int type; Msg(String content, int type) { this.content = content; this.type = type; }}

xml：

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:id="@+id/activity_main" android:layout_width="match_parent" android:layout_height="match_parent" android:background="#ccc" android:orientation="vertical" tools:context="com.example.test.MainActivity"> <ListView android:id="@+id/lv" android:layout_width="match_parent" android:layout_height="0dp" android:layout_weight="1" android:divider="@null" /> <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content"> <EditText android:id="@+id/et_input" android:layout_width="0dp" android:layout_height="wrap_content" android:layout_weight="1" android:hint="请输入要发送的内容" /> <Button android:id="@+id/bt_send" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="发送" /> </LinearLayout></LinearLayout><?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"> <TextView android:id="@+id/tv_receive" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="start" android:background="@drawable/message_left" android:gravity="center" android:text="who?" android:textSize="20sp" /> <TextView android:id="@+id/tv_send" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="end" android:background="@drawable/message_right" android:gravity="center" android:text="i am your father" android:textSize="20sp" /></LinearLayout>

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。