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Android 仿微信QQ聊天界面

yunbo1
微信
2026-08-12
127

一些IM聊天软件的展现形式是左右分开的形式。比如说，别人给你发的信息全部靠左显示，你自己发给别人的信息全部靠右显示。

而我们的ListView很多时候是显示同一个布局，其实BaseAdapter中有2个重要的方法在大多数情况下我们并未使用到，一个是public int getViewTypeCount()，显示ListView中有多少种布局（默认是显示是1），像微信那样聊天界面，是有2种布局方式；另外一个getItemViewType()，可以让不同item条目加载不同的布局,下面就简单的模拟下微信的聊天界面做法：

MainActivity.java

package com.jackie.wechat;
import java.util.ArrayList;
import java.util.List;
import android.app.Activity;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ListView;
import android.widget.TextView;
public class MainActivity extends Activity {
private ListView mListView;
private List<Person> persons;
private int TYPE_COUNT = 2;
private int LEFT = 0;
private int RIGHT = 1;
private LayoutInflater mInflater;
private MyAdapter adapter;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mListView = (ListView) findViewById(R.id.listview);
mInflater = LayoutInflater.from(this);
initData();
adapter = new MyAdapter();
mListView.setAdapter(adapter);
}
private void initData() {
persons = new ArrayList<Person>();
for(int i = 0; i < 40; i++){
Person person = new Person();
person.setAge(i);
person.setName("更深的蓝");
if(i % 2 == 0){
person.setType(0);
} else {
person.setType(1);
}
persons.add(person);
}
}
private class MyAdapter extends BaseAdapter{
@Override
public int getCount() {
return persons.size();
}
@Override
public Object getItem(int position) {
return persons.get(position);
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public int getItemViewType(int position) {
if(persons.get(position).getType() == 0){
return LEFT;
}
return RIGHT;
}
@Override
public int getViewTypeCount() {
return TYPE_COUNT;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder mHolder;
Person person = persons.get(position);
if(getItemViewType(position) == LEFT) {
if (convertView == null) {
mHolder = new ViewHolder();
convertView = mInflater.inflate(R.layout.item_left, null);
mHolder.tv_username = (TextView) convertView.findViewById(R.id.tv_username);
mHolder.tv_age = (TextView) convertView.findViewById(R.id.tv_age);
convertView.setTag(mHolder);
} else {
mHolder = (ViewHolder) convertView.getTag();
}
mHolder.tv_username.setText(person.getName());
mHolder.tv_age.setText(String.valueOf(person.getAge()));
} else {
if(convertView == null){
mHolder = new ViewHolder();
convertView = mInflater.inflate(R.layout.item_right, null);
mHolder.tv_username = (TextView) convertView.findViewById(R.id.tv_username);
mHolder.tv_age = (TextView) convertView.findViewById(R.id.tv_age);
convertView.setTag(mHolder);
}else{
mHolder = (ViewHolder) convertView.getTag();
}
mHolder.tv_username.setText(person.getName());
mHolder.tv_age.setText(String.valueOf(person.getAge()));
}
return convertView;
}
private class ViewHolder {
TextView tv_username;
TextView tv_age;
}
}
}

Person.java

Android 仿微信QQ聊天界面

[java] view plaincopyprint?

package com.jackie.wechat;
public class Person {
private String name;
private int age;
private int type;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
public int getType() {
return type;
}
public void setType(int type) {
this.type = type;
}
}

item_left.xml

[html] view plaincopyprint?

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:background="#ffffff"
>
<RelativeLayout
android:layout_width="fill_parent"
android:layout_height="45dp"
>
<TextView
android:id="@+id/tv_username"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="16sp"
android:textColor="#123456"
android:layout_centerVertical="true"
android:layout_alignParentLeft="true"
/>
<TextView
android:id="@+id/tv_age"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="16sp"
android:textColor="#123456"
android:layout_centerVertical="true"
android:layout_toRightOf="@id/tv_username"
android:layout_marginLeft="20dp"
/>
</RelativeLayout>
</RelativeLayout>

item_right.xml

[java] view plaincopyprint?

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:background="#ffffff"
>
<RelativeLayout
android:layout_width="fill_parent"
android:layout_height="45dp"
>
<TextView
android:id="@+id/tv_username"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="16sp"
android:textColor="#123456"
android:layout_centerVertical="true"
android:layout_alignParentRight="true"
/>
<TextView
android:id="@+id/tv_age"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="16sp"
android:textColor="#123456"
android:layout_centerVertical="true"
android:layout_toLeftOf="@id/tv_username"
android:layout_marginRight="20dp"
/>
</RelativeLayout>
</RelativeLayout>

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