微信的气泡聊天是仿iPhone自带短信而设计出来的，不过感觉还不错可以尝试一下仿着微信的气泡聊天做一个Demo，给大家分享一下！效果图如下：
气泡聊天最终要的是素材，要用到9.png文件的素材，这样气泡会随着聊天内容的多少而改变气泡的大小且不失真。为了方便，我就直接在微信里面提取出来啦。
聊天的内容是用ListView来显示的，将聊天的内容封装成一个ChatMsgEntity类的对象里面，然后交给自定义的ListView适配器将聊天内容显示出来。
ChatMsgEntity.java比较简单，只是聊天的内容存储、设置和获取。
package com.example.school;public class ChatMsgEntity {private static final String TAG = ChatMsgEntity.class.getSimpleName();//名字private String name;//日期private String date;//聊天内容private String text;//是否为对方发来的信息private boolean isComMeg = true;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 getText() {return text;}public void setText(String text) {this.text = text;}public boolean getMsgType() {return isComMeg;}public void setMsgType(boolean isComMsg) {isComMeg = isComMsg;}public ChatMsgEntity() {}public ChatMsgEntity(String name, String date, String text, boolean isComMsg) {this.name = name;this.date = date;this.text = text;this.isComMeg = isComMsg;}}
显示ListView的适配器ChatMsgViewAdpater.java:
package com.example.school;import android.R.integer;import android.content.Context;import android.database.DataSetObserver;import android.util.Log;import android.view.LayoutInflater;import android.view.View;import android.view.View.OnClickListener;import android.view.View.OnLongClickListener;import android.view.ViewGroup;import android.widget.BaseAdapter;import android.widget.CheckBox;import android.widget.LinearLayout;import android.widget.TextView;import java.util.ArrayList;import java.util.List;public class ChatMsgViewAdapter extends BaseAdapter {//ListView视图的内容由IMsgViewType决定public static interface IMsgViewType{//对方发来的信息int IMVT_COM_MSG = 0;//自己发出的信息int IMVT_TO_MSG = 1;}private static final String TAG = ChatMsgViewAdapter.class.getSimpleName();private List<ChatMsgEntity> data;private Context context; private LayoutInflater mInflater;public ChatMsgViewAdapter(Context context, List<ChatMsgEntity> data) {this.context = context;this.data = data;mInflater = LayoutInflater.from(context);}//获取ListView的项个数public int getCount() {return data.size();}//获取项public Object getItem(int position) {return data.get(position);}//获取项的IDpublic long getItemId(int position) {return position;}//获取项的类型public int getItemViewType(int position) {// TODO Auto-generated method stubChatMsgEntity entity = data.get(position);if (entity.getMsgType()){return IMsgViewType.IMVT_COM_MSG;}else{return IMsgViewType.IMVT_TO_MSG;}}//获取项的类型数public int getViewTypeCount() {// TODO Auto-generated method stubreturn 2;}//获取Viewpublic View getView(int position, View convertView, ViewGroup parent) {ChatMsgEntity entity = data.get(position);boolean isComMsg = entity.getMsgType();ViewHolder viewHolder = null; if (convertView == null){if (isComMsg){//如果是对方发来的消息，则显示的是左气泡convertView = mInflater.inflate(R.layout.chatting_item_msg_text_left, null);}else{//如果是自己发出的消息，则显示的是右气泡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.getText());return convertView;}//通过ViewHolder显示项的内容static class ViewHolder { public TextView tvSendTime;public TextView tvUserName;public TextView tvContent;public boolean isComMsg = true;}}
对方发来消息的显示布局chatting_item_msg_text_left.xml
<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="/apk/res/android"android:layout_width="fill_parent"android:layout_height="wrap_content"android:orientation="vertical"android:padding="6dp"><LinearLayoutandroid:layout_width="fill_parent"android:layout_height="wrap_content"android:orientation="vertical" android:gravity="center_horizontal"><TextViewandroid:id="@+id/tv_sendtime"android:layout_width="wrap_content"android:layout_height="wrap_content"style="@style/chat_text_date_style"/></LinearLayout><RelativeLayoutandroid:layout_width="fill_parent"android:layout_height="wrap_content"android:layout_marginTop="5dp" ><ImageView android:id="@+id/iv_userhead" android:layout_width="wrap_content"android:layout_height="wrap_content"android:focusable="false" android:layout_alignParentLeft="true" android:layout_alignParentTop="true" android:background="@drawable/mini_avatar_shadow"/><TextView android:id="@+id/tv_chatcontent" android:layout_toRightOf="@id/iv_userhead"android:layout_marginLeft="10dp"android:layout_width="wrap_content"android:layout_height="wrap_content"android:background="@drawable/chatfrom_bg" style="@style/chat_content_date_style"/> <TextView android:id="@+id/tv_username" android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_below="@id/iv_userhead"android:layout_alignParentLeft="true"android:layout_toLeftOf="@id/tv_chatcontent"style="@style/chat_text_name_style"/></RelativeLayout></LinearLayout>
chatting_item_msg_text_right.xml和上面差不多，只是气泡和头像的方向在右边，就不贴代码了。
主界面的布局chat.xml
<?xml version="1.0" encoding="utf-8"?><RelativeLayoutxmlns:android="/apk/res/android"android:layout_width="fill_parent"android:layout_height="fill_parent"android:background="#f0f0e0" ><RelativeLayoutandroid:id="@+id/rl_layout" android:layout_width="fill_parent"android:layout_height="wrap_content"android:background="@drawable/title" ><Button android:id="@+id/btn_back" android:gravity="center_vertical" android:layout_marginLeft="5dp" android:paddingLeft="18dp" android:textSize="18.0sp" android:textColor="#ffffff" android:background="@drawable/selector_btn_back" android:layout_width="70dp" android:layout_height="wrap_content" android:text="@string/back" /><TextViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:text="@string/school_title_name"android:layout_centerInParent="true"style="@style/my_txt"/><ImageView android:layout_width="wrap_content"android:layout_height="wrap_content"android:background="@drawable/campus_info"android:layout_centerVertical="true"android:layout_alignParentRight="true"android:layout_marginRight="15dp"/></RelativeLayout><RelativeLayoutandroid:id="@+id/rl_bottom"android:layout_width="fill_parent"android:layout_height="wrap_content"android:layout_alignParentBottom="true"android:background="@drawable/layout_bg1" ><Buttonandroid:id="@+id/btn_send"android:layout_width="60dp"android:layout_height="40dp"android:layout_alignParentRight="true"android:layout_marginRight="10dp"android:layout_centerVertical="true"android:text="@string/send" /><EditTextandroid:id="@+id/et_sendmessage"android:layout_width="fill_parent"android:layout_height="40dp"android:layout_toLeftOf="@id/btn_send"android:layout_marginLeft="10dp"android:layout_marginRight="10dp"android:background="@drawable/edittext1"android:layout_centerVertical="true"android:singleLine="true"android:textSize="18sp"/></RelativeLayout><ListViewandroid:id="@+id/listview"android:layout_below="@id/rl_layout"android:layout_above="@id/rl_bottom"android:layout_width="fill_parent"android:layout_height="fill_parent"android:layout_marginLeft="10.0dip" android:layout_marginTop="10.0dip" android:layout_marginRight="10.0dip"android:divider="@null"android:dividerHeight="5dp"android:scrollbars="none"android:cacheColorHint="#00000000"/></RelativeLayout>
ChatActivity.java
package com.example.chat;import java.util.ArrayList;import java.util.Calendar;import java.util.List;import com.example.school.R;import android.os.Bundle;import android.app.Activity;import android.content.Intent;import android.view.KeyEvent;import android.view.Menu;import android.view.View;import android.view.Window;import android.view.View.OnClickListener;import android.widget.AdapterView;import android.widget.AdapterView.OnItemClickListener;import android.widget.Button;import android.widget.EditText;import android.widget.ListView;import android.widget.TextView;public class ChatActivity extends Activity implements OnClickListener {private Button mBtnSend;private Button mBtnBack;private EditText mEditTextContent;//聊天内容的适配器private ChatMsgViewAdapter mAdapter;private ListView mListView;//聊天的内容private List<ChatMsgEntity> mDataArrays = new ArrayList<ChatMsgEntity>();@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);requestWindowFeature(Window.FEATURE_NO_TITLE);// 去掉标题栏 setContentView(R.layout.chat);initView();initData();}//初始化视图private void initView() {mListView = (ListView) findViewById(R.id.listview);mBtnBack = (Button) findViewById(R.id.btn_back);mBtnBack.setOnClickListener(this);mBtnSend = (Button) findViewById(R.id.btn_send);mBtnSend.setOnClickListener(this);mEditTextContent = (EditText) findViewById(R.id.et_sendmessage);}private String[] msgArray = new String[]{" 孩子们，要好好学习，天天向上！要好好听课，不要翘课！不要挂科，多拿奖学金！三等奖学金的争取拿二等，二等的争取拿一等，一等的争取拿励志！", "姚妈妈还有什么吩咐...", "还有，明天早上记得跑操啊，不来的就扣德育分！", "德育分是什么？扣了会怎么样？", "德育分会影响奖学金评比，严重的话，会影响毕业", "哇！学院那么不人道？","你要是你不听话，我当场让你不能毕业！", "姚妈妈，我知错了(- -我错在哪了...)"};private String[]dataArray = new String[]{"-09-01 18:00", "-09-01 18:10", "-09-01 18:11", "-09-01 18:20", "-09-01 18:30", "-09-01 18:35", "-09-01 18:40", "-09-01 18:50"};private final static int COUNT = 8;//初始化要显示的数据private void initData() {for(int i = 0; i < COUNT; i++) {ChatMsgEntity entity = new ChatMsgEntity();entity.setDate(dataArray[i]);if (i % 2 == 0){entity.setName("姚妈妈");entity.setMsgType(true);}else{entity.setName("Shamoo");entity.setMsgType(false);}entity.setText(msgArray[i]);mDataArrays.add(entity);}mAdapter = new ChatMsgViewAdapter(this, mDataArrays);mListView.setAdapter(mAdapter);}public void onClick(View view) {// TODO Auto-generated method stubswitch(view.getId()) {case R.id.btn_back:back();break;case R.id.btn_send:send();break;}}private void send(){String contString = mEditTextContent.getText().toString();if (contString.length() > 0){ChatMsgEntity entity = new ChatMsgEntity();entity.setDate(getDate());entity.setName("");entity.setMsgType(false);entity.setText(contString);mDataArrays.add(entity);mAdapter.notifyDataSetChanged();mEditTextContent.setText("");mListView.setSelection(mListView.getCount() - 1);}}//获取日期private String getDate() {Calendar c = Calendar.getInstance();String year = String.valueOf(c.get(Calendar.YEAR));String month = String.valueOf(c.get(Calendar.MONTH));String day = String.valueOf(c.get(Calendar.DAY_OF_MONTH) + 1);String hour = String.valueOf(c.get(Calendar.HOUR_OF_DAY));String mins = String.valueOf(c.get(Calendar.MINUTE));StringBuffer sbBuffer = new StringBuffer();sbBuffer.append(year + "-" + month + "-" + day + " " + hour + ":" + mins); return sbBuffer.toString();}public boolean onKeyDown(int keyCode, KeyEvent event) {back();return true;}private void back() {finish();}}
谢谢大家的支持！链接：点击打开链接
需要一分资源分，大家评论一下那一分就还回来了，哈哈~~
转自/pocoyoshamoo/article/details/9674385
