效果图：
chatting_item_from.xml
<?xml version="1.0" encoding="UTF-8"?>
<LinearLayout
android:orientation="vertical"
android:paddingLeft="6.0dip"
android:paddingRight="6.0dip"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
xmlns:android="http://schemas.android.com/apk/res/android">
<TextView
android:id="@+id/chatting_time_tv"
style="@style/ChattingUISplit" />
<TextView
android:id="@+id/chatting_content_itv"
android:
android:background="@drawable/chatfrom_bg"
style="@style/ChattingUIText" />
</LinearLayout>
chatting_item_to.xml:
<?xml version="1.0" encoding="UTF-8"?>
<LinearLayout android:orientation="vertical" android:paddingLeft="6.0dip" android:paddingRight="6.0dip" android:layout_width="fill_parent" android:layout_height="wrap_content"
xmlns:android="http://schemas.android.com/apk/res/android">
<TextView
android:id="@+id/chatting_time_tv"
style="@style/ChattingUISplit" />
<LinearLayout
android:orientation="horizontal"
android:layout_width="fill_parent"
android:layout_height="wrap_content">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1.0" />
<ImageView
android:id="@+id/chatting_state_iv"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<TextView
android:
android:id="@+id/chatting_content_itv"
android:background="@drawable/chatto_bg"
style="@style/ChattingUIText" />
</LinearLayout>
</LinearLayout>
chatting_title_bar.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="40dip"
android:orientation="horizontal"
android:gravity="center_vertical"
android:background="@drawable/mmtitle_bg">
<TextView
android:id="@+id/chatting_contact_name"
android:layout_height="wrap_content"
android:layout_width="180dip"
android:textSize="18sp"
android:ellipsize="end"
android:background="@null"
android:textColor="@color/white"
android:gravity="left|center"
android:paddingLeft="10dip"
android:text="测试用户"
/>
<TextView
android:id="@+id/chatting_contact_status"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:background="@null"
android:text="正在输入..."
android:textSize="16sp"
android:textColor="@color/white"
android:layout_alignParentRight="true"
android:layout_alignParentBottom="true"
android:padding="3dip"
android:layout_toRightOf="@id/chatting_contact_name"
android:visibility="gone"
/>
</RelativeLayout>
chatting.xml
<?xml version="1.0" encoding="UTF-8"?>
<LinearLayout
android:id="@+id/chat_root"
android:focusable="false"
android:focusableInTouchMode="false"
android:background="@drawable/nav_page"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:gravity="center_horizontal"
android:orientation="vertical"
xmlns:android="http://schemas.android.com/apk/res/android">
<ListView
android:id="@+id/chatting_history_lv"
android:background="@null"
android:scrollbars="vertical"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:listSelector="@drawable/mm_chat_listitem"
android:transcriptMode="alwaysScroll"
android:cacheColorHint="#00000000"
android:divider="@null"
android:layout_weight="1.0" />
<LinearLayout
android:orientation="horizontal"
android:background="@drawable/txt_msg_bg"
android:paddingRight="7.0dip"
android:layout_width="fill_parent"
android:layout_height="wrap_content">
<ImageView
android:layout_gravity="center_vertical"
android:id="@+id/sms_button_insert"
android:paddingLeft="15.0dip"
android:paddingTop="5.0dip"
android:paddingRight="7.0dip"
android:paddingBottom="5.0dip"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/sms_insert" />
<EditText
android:textColorHint="@color/search_hint"
android:layout_gravity="center_vertical"
android:id="@+id/text_editor"
android:background="@drawable/sms_embeded_text_editor_bg"
android:focusable="true"
android:nextFocusRight="@+id/send_button"
android:layout_width="0.0dip"
android:layout_height="wrap_content"
android:layout_marginLeft="7.0dip"
android:layout_marginTop="5.0dip"
android:layout_marginRight="7.0dip"
android:layout_marginBottom="5.0dip"
android:minHeight="34.0dip"
android:hint="输入消息"
android:maxLines="8"
android:maxLength="2000"
android:capitalize="sentences"
android:
android:layout_weight="1.0"
android:inputType="textCapSentences|textAutoCorrect|textMultiLine|textShortMessage"
android:imeOptions="actionSend|flagNoEnterAction" />
<Button
android:gravity="center"
android:layout_gravity="center_vertical"
android:id="@+id/send_button"
android:background="@drawable/sms_send_button_bg"
android:paddingLeft="11.0dip"
android:paddingRight="11.0dip"
android:nextFocusLeft="@id/text_editor"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
/>
</LinearLayout>
</LinearLayout>
实体类:
public class ChatMessage {
public static final int MESSAGE_FROM = 0;
public static final int MESSAGE_TO = 1;
private int direction;
private String content;
public ChatMessage(int direction, String content) {
super();
this.direction = direction;
this.content = content;
}
public int getDirection() {
return direction;
}
public void setDirection(int direction) {
this.direction = direction;
}
public void setContent(String content) {
this.content = content;
}
public CharSequence getContent() {
return content;
}
}
adapter类：
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;
public class ChattingAdapter extends BaseAdapter {
protected static final String TAG = "ChattingAdapter";
private Context context;
private List<ChatMessage> chatMessages;
public ChattingAdapter(Context context, List<ChatMessage> messages) {
super();
this.context = context;
this.chatMessages = messages;
}
public int getCount() {
return chatMessages.size();
}
public Object getItem(int position) {
return chatMessages.get(position);
}
public long getItemId(int position) {
return position;
}
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder holder = null;
ChatMessage message = chatMessages.get(position);
if (convertView == null || (holder = (ViewHolder) convertView.getTag()).flag != message.getDirection()) {
holder = new ViewHolder();
if (message.getDirection() == ChatMessage.MESSAGE_FROM) {
holder.flag = ChatMessage.MESSAGE_FROM;
convertView = LayoutInflater.from(context).inflate(R.layout.chatting_item_from, null);
} else {
holder.flag = ChatMessage.MESSAGE_TO;
convertView = LayoutInflater.from(context).inflate(R.layout.chatting_item_to, null);
}
holder.text = (TextView) convertView.findViewById(R.id.chatting_content_itv);
convertView.setTag(holder);
}
holder.text.setText(message.getContent());
return convertView;
}
//优化listview的Adapter
static class ViewHolder {
TextView text;
int flag;
}
}
主activity类
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.Window;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ListView;
public class MainActivity extends Activity {
protected static final String TAG = "MainActivity";
private ChattingAdapter chatHistoryAdapter;
private List<ChatMessage> messages = new ArrayList<ChatMessage>();
private ListView chatHistoryLv;
private Button sendBtn;
private EditText textEditor;
//private ImageView sendImageIv;
//private ImageView captureImageIv;
//private View recording;
//private PopupWindow menuWindow = null;
@Override
public void onCreate(Bundle savedInstanceState) {
requestWindowFeature(Window.FEATURE_CUSTOM_TITLE);
super.onCreate(savedInstanceState);
setContentView(R.layout.chatting);
getWindow().setFeatureInt(Window.FEATURE_CUSTOM_TITLE, R.layout.chatting_title_bar);
chatHistoryLv = (ListView) findViewById(R.id.chatting_history_lv);
setAdapterForThis();
sendBtn = (Button) findViewById(R.id.send_button);
textEditor = (EditText) findViewById(R.id.text_editor);
sendBtn.setOnClickListener(l);
}
// 设置adapter
private void setAdapterForThis() {
initMessages();
chatHistoryAdapter = new ChattingAdapter(this, messages);
chatHistoryLv.setAdapter(chatHistoryAdapter);
}
// 为listView添加数据
private void initMessages() {
messages.add(new ChatMessage(ChatMessage.MESSAGE_FROM, "hello"));
messages.add(new ChatMessage(ChatMessage.MESSAGE_TO, "hello"));
messages.add(new ChatMessage(ChatMessage.MESSAGE_FROM, "你好吗？"));
messages.add(new ChatMessage(ChatMessage.MESSAGE_TO, "非常好!"));
messages.add(new ChatMessage(ChatMessage.MESSAGE_FROM, "欢迎光临我的博客，http://hi.csdn.net/lyfi01"));
messages.add(new ChatMessage(ChatMessage.MESSAGE_TO, "恩，好的，谢谢"));
}
private View.OnClickListener l = new View.OnClickListener() {
public void onClick(View v) {
if (v.getId() == sendBtn.getId()) {
String str = textEditor.getText().toString();
String sendStr;
if (str != null
&& (sendStr = str.trim().replaceAll("\r", "").replaceAll("\t", "").replaceAll("\n", "")
.replaceAll("\f", "")) != "") {
sendMessage(sendStr);
}
textEditor.setText("");
}
}
// 模拟发送消息
private void sendMessage(String sendStr) {
messages.add(new ChatMessage(ChatMessage.MESSAGE_TO, sendStr));
chatHistoryAdapter.notifyDataSetChanged();
}
};
}
