详解Android高仿微信聊天界面实例

微信聊天现在非常火，是因其界面漂亮吗，哈哈，也许吧。微信每条消息都带有一个气泡，非常迷人，看起来感觉实现起来非常难，其实并不难。下面小编给大家分享实现代码

先给大家展示下实现效果图：

OK，下面我们来看一下整个小项目的主体结构：

下面是Activity的代码：

package com.way.demo; 
import java.text.SimpleDateFormat; 
import java.util.ArrayList; 
import java.util.Date; 
import java.util.List; 
import android.app.Activity; 
import android.os.Bundle; 
import android.view.View; 
import android.view.View.OnClickListener; 
import android.widget.Button; 
import android.widget.EditText; 
import android.widget.ListView; 
/** 
* @author way 
*/ 
public class WeixinChatDemoActivity extends Activity implements OnClickListener { 
private Button mBtnSend;// 发送btn 
private Button mBtnBack;// 返回btn 
private EditText mEditTextContent; 
private ListView mListView; 
private ChatMsgViewAdapter mAdapter;// 消息视图的Adapter 
private List<ChatMsgEntity> mDataArrays = new ArrayList<ChatMsgEntity>();// 消息对象数组 
public void onCreate(Bundle savedInstanceState) { 
super.onCreate(savedInstanceState); 
setContentView(R.layout.main); 
initView();// 初始化view 
initData();// 初始化数据 
mListView.setSelection(mAdapter.getCount() - 1); 
} 
/** 
* 初始化view 
*/ 
public void initView() { 
mListView = (ListView) findViewById(R.id.listview); 
mBtnSend = (Button) findViewById(R.id.btn_send); 
mBtnSend.setOnClickListener(this); 
mBtnBack = (Button) findViewById(R.id.btn_back); 
mBtnBack.setOnClickListener(this); 
mEditTextContent = (EditText) findViewById(R.id.et_sendmessage); 
} 
private String[] msgArray = new String[] { "有大吗", "有！你呢？", "我也有", "那上吧", 
"打啊！你放大啊！", "你TM咋不放大呢？留大抢人头啊？CAO！你个菜B", "2B不解释", "尼滚...", 
"今晚去网吧包夜吧？", "有毛片吗？", "种子一大堆啊~还怕没片？", "OK,搞起！！" }; 
private String[] dataArray = new String[] { "2012-09-22 18:00:02", 
"2012-09-22 18:10:22", "2012-09-22 18:11:24", 
"2012-09-22 18:20:23", "2012-09-22 18:30:31", 
"2012-09-22 18:35:37", "2012-09-22 18:40:13", 
"2012-09-22 18:50:26", "2012-09-22 18:52:57", 
"2012-09-22 18:55:11", "2012-09-22 18:56:45", 
"2012-09-22 18:57:33", }; 
private final static int COUNT = 12;// 初始化数组总数 
/** 
* 模拟加载消息历史，实际开发可以从数据库中读出 
*/ 
public void initData() { 
for (int i = 0; i < COUNT; i++) { 
ChatMsgEntity entity = new ChatMsgEntity(); 
entity.setDate(dataArray[i]); 
if (i % 2 == 0) { 
entity.setName("肖B"); 
entity.setMsgType(true);// 收到的消息 
} else { 
entity.setName("必败"); 
entity.setMsgType(false);// 自己发送的消息 
} 
entity.setMessage(msgArray[i]); 
mDataArrays.add(entity); 
} 
mAdapter = new ChatMsgViewAdapter(this, mDataArrays); 
mListView.setAdapter(mAdapter); 
} 
@Override 
public void onClick(View v) { 
switch (v.getId()) { 
case R.id.btn_send:// 发送按钮点击事件 
send(); 
break; 
case R.id.btn_back:// 返回按钮点击事件 
finish();// 结束,实际开发中，可以返回主界面 
break; 
} 
} 
/** 
* 发送消息 
*/ 
private void send() { 
String contString = mEditTextContent.getText().toString(); 
if (contString.length() > 0) { 
ChatMsgEntity entity = new ChatMsgEntity(); 
entity.setName("必败"); 
entity.setDate(getDate()); 
entity.setMessage(contString); 
entity.setMsgType(false); 
mDataArrays.add(entity); 
mAdapter.notifyDataSetChanged();// 通知ListView，数据已发生改变 
mEditTextContent.setText("");// 清空编辑框数据 
mListView.setSelection(mListView.getCount() - 1);// 发送一条消息时，ListView显示选择最后一项 
} 
} 
/** 
* 发送消息时，获取当前事件 
* 
* @return 当前时间 
*/ 
private String getDate() { 
SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd hh:mm:ss"); 
return format.format(new Date()); 
} 
}

ListView的代码：

package com.way.demo; 
import java.util.List; 
import android.content.Context; 
import android.view.LayoutInflater; 
import android.view.View; 
import android.view.ViewGroup; 
import android.widget.BaseAdapter; 
import android.widget.TextView; 
/** 
* 消息ListView的Adapter 
* 
* @author way 
*/ 
public class ChatMsgViewAdapter extends BaseAdapter { 
public static interface IMsgViewType { 
int IMVT_COM_MSG = 0;// 收到对方的消息 
int IMVT_TO_MSG = 1;// 自己发送出去的消息 
} 
private static final int ITEMCOUNT = 2;// 消息类型的总数 
private List<ChatMsgEntity> coll;// 消息对象数组 
private LayoutInflater mInflater; 
public ChatMsgViewAdapter(Context context, List<ChatMsgEntity> coll) { 
this.coll = coll; 
mInflater = LayoutInflater.from(context); 
} 
public int getCount() { 
return coll.size(); 
} 
public Object getItem(int position) { 
return coll.get(position); 
} 
public long getItemId(int position) { 
return position; 
} 
/** 
* 得到Item的类型，是对方发过来的消息，还是自己发送出去的 
*/ 
public int getItemViewType(int position) { 
ChatMsgEntity entity = coll.get(position); 
if (entity.getMsgType()) {//收到的消息 
return IMsgViewType.IMVT_COM_MSG; 
} else {//自己发送的消息 
return IMsgViewType.IMVT_TO_MSG; 
} 
} 
/** 
* Item类型的总数 
*/ 
public int getViewTypeCount() { 
return ITEMCOUNT; 
} 
public View getView(int position, View convertView, ViewGroup parent) { 
ChatMsgEntity entity = coll.get(position); 
boolean isComMsg = entity.getMsgType(); 
ViewHolder viewHolder = null; 
if (convertView == null) { 
if (isComMsg) { 
convertView = mInflater.inflate( 
R.layout.chatting_item_msg_text_left, null); 
} else { 
convertView = mInflater.inflate( 
R.layout.chatting_item_msg_text_right, null); 
} 
viewHolder = new ViewHolder(); 
viewHolder.tvSendTime = (TextView) convertView 
.findViewById(R.id.tv_sendtime); 
viewHolder.tvUserName = (TextView) convertView 
.findViewById(R.id.tv_username); 
viewHolder.tvContent = (TextView) convertView 
.findViewById(R.id.tv_chatcontent); 
viewHolder.isComMsg = isComMsg; 
convertView.setTag(viewHolder); 
} else { 
viewHolder = (ViewHolder) convertView.getTag(); 
} 
viewHolder.tvSendTime.setText(entity.getDate()); 
viewHolder.tvUserName.setText(entity.getName()); 
viewHolder.tvContent.setText(entity.getMessage()); 
return convertView; 
} 
static class ViewHolder { 
public TextView tvSendTime; 
public TextView tvUserName; 
public TextView tvContent; 
public boolean isComMsg = true; 
} 
}

消息对象的代码：

package com.way.demo; 
/** 
* 一个消息的JavaBean 
* 
* @author way 
* 
*/ 
public class ChatMsgEntity { 
private String name;//消息来自 
private String date;//消息日期 
private String message;//消息内容 
private boolean isComMeg = true;// 是否为收到的消息 
public String getName() { 
return name; 
} 
public void setName(String name) { 
this.name = name; 
} 
public String getDate() { 
return date; 
} 
public void setDate(String date) { 
this.date = date; 
} 
public String getMessage() { 
return message; 
} 
public void setMessage(String message) { 
this.message = message; 
} 
public boolean getMsgType() { 
return isComMeg; 
} 
public void setMsgType(boolean isComMsg) { 
isComMeg = isComMsg; 
} 
public ChatMsgEntity() { 
} 
public ChatMsgEntity(String name, String date, String text, boolean isComMsg) { 
super(); 
this.name = name; 
this.date = date; 
this.message = text; 
this.isComMeg = isComMsg; 
} 
}

以上所述是小编给大家分享的Android高仿微信聊天界面代码分享，希望对大家有所帮助。

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