简单模仿QQ聊天界面

 1 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
 2     xmlns:tools="http://schemas.android.com/tools"
 3     android:layout_width="match_parent"
 4     android:layout_height="match_parent"
 5     android:background="#ffffff"
 6     tools:context=".MainActivity" >
 7     <ListView 
 8         android:id="@+id/lv_message"
 9         android:layout_height="fill_parent"
10         android:layout_width="fill_parent"
11         android:layout_above="@+id/ll_send_1"
12         android:scrollbars="none"
13         android:divider="@null"
14         android:footerDividersEnabled="false">
15     </ListView>
16     <LinearLayout 
17         android:id="@+id/ll_send_1"
18         android:layout_height="50dp"
19         android:layout_width="fill_parent"
20         android:orientation="horizontal"
21         android:layout_above="@+id/ll_send_2">
22         <EditText 
23             android:id="@+id/et_tony_message"
24             android:layout_width="0dp"
25             android:layout_height="fill_parent"
26             android:layout_weight="3"
27             android:hint="Tony请输入"/>
28         <Button 
29             android:id="@+id/but_tony_send"
30             android:layout_height="fill_parent"
31             android:layout_width="0dp"
32             android:layout_weight="1"
33             android:text="send"/>
34     </LinearLayout>
35     <LinearLayout 
36         android:id="@+id/ll_send_2"
37         android:layout_height="50dp"
38         android:layout_width="fill_parent"
39         android:orientation="horizontal"
40         android:layout_alignParentBottom="true">
41         <EditText 
42             android:id="@+id/et_hill_message"
43             android:layout_width="0dp"
44             android:layout_height="fill_parent"
45             android:layout_weight="3"
46             android:hint="Hill请输入"/>
47         <Button 
48             android:id="@+id/but_hill_send"
49             android:layout_height="fill_parent"
50             android:layout_width="0dp"
51             android:layout_weight="1"
52             android:text="send"/>
53     </LinearLayout>
54 </RelativeLayout>

 1 <?xml version="1.0" encoding="utf-8"?>
 2 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
 3     android:layout_width="fill_parent"
 4     android:layout_height="wrap_content"
 5     android:orientation="vertical"
 6     android:background="@drawable/chat_list_item_background"
 7     android:padding="6dp">
 8 
 9     <LinearLayout
10         android:layout_width="fill_parent"
11         android:layout_height="wrap_content"
12         android:orientation="vertical" 
13         android:gravity="center_horizontal">
14         
15         <TextView
16             android:id="@+id/tv_sendtime"
17             android:layout_width="wrap_content"
18             android:layout_height="wrap_content"
19             android:textColor="#8B8B8B"
20             android:textSize="12sp"
21             android:text="15:03:15"/>
22     </LinearLayout>
23 
24 
25     <RelativeLayout
26         android:layout_width="fill_parent"
27         android:layout_height="wrap_content">
28     
29         <ImageView 
30             android:id="@+id/iv_userhead" 
31             android:layout_width="40dp"
32             android:layout_height="40dp"
33             android:background="@drawable/head_portrait_1"
34             android:focusable="false" 
35             android:layout_alignParentLeft="true" 
36             android:layout_alignParentTop="true" />
37         
38         <TextView 
39             android:id="@+id/tv_username" 
40             android:layout_width="wrap_content"
41             android:layout_height="wrap_content"
42             android:layout_marginLeft="10dp"
43             android:layout_marginBottom="5dp"
44             android:textColor="#8B8B8B"
45             android:layout_toRightOf="@id/iv_userhead"
46             android:text="name"/>
47         
48         <TextView 
49             android:id="@+id/tv_chatcontent" 
50             android:layout_toRightOf="@id/iv_userhead"
51             android:layout_marginLeft="10dp"
52             android:layout_marginRight="40dp"
53             android:layout_below="@id/tv_username"
54             android:layout_width="wrap_content"
55             android:layout_height="wrap_content"
56             android:text=""
57             android:background="@drawable/message_text_background01"/> 
58     </RelativeLayout>
59 </LinearLayout>

 1 <?xml version="1.0" encoding="utf-8"?>
 2 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
 3     android:layout_width="fill_parent"
 4     android:layout_height="wrap_content"
 5     android:orientation="vertical"
 6     android:background="@drawable/chat_list_item_background"
 7     android:padding="6dp">
 8 
 9     <LinearLayout
10         android:layout_width="fill_parent"
11         android:layout_height="wrap_content"
12         android:orientation="vertical" 
13         android:gravity="center_horizontal">
14         
15         <TextView
16             android:id="@+id/tv_sendtime"
17             android:layout_width="wrap_content"
18             android:layout_height="wrap_content"
19             android:textColor="#8B8B8B"
20             android:textSize="12sp"
21             android:text="15:03:15"/>
22     </LinearLayout>
23     <RelativeLayout
24         android:layout_width="fill_parent"
25         android:layout_height="wrap_content"
26         android:layout_marginTop="5dp" >
27     
28         <ImageView 
29             android:id="@+id/iv_userhead" 
30             android:layout_width="40dp"
31             android:layout_height="40dp"
32             android:background="@drawable/head_portrait_2"
33             android:focusable="false" 
34             android:layout_alignParentRight="true" 
35             android:layout_alignParentTop="true" />
36         
37         <TextView 
38             android:id="@+id/tv_username" 
39             android:layout_width="wrap_content"
40             android:layout_height="wrap_content"
41             android:layout_marginRight="10dp"
42             android:layout_marginBottom="5dp"
43             android:textColor="#8B8B8B"
44             android:layout_toLeftOf="@id/iv_userhead"
45             android:text="name"/>
46         
47         <TextView 
48             android:id="@+id/tv_chatcontent" 
49             android:layout_toLeftOf="@id/iv_userhead"
50             android:layout_marginRight="10dp"
51             android:layout_marginLeft="40dp"
52             android:layout_below="@id/tv_username"
53             android:layout_width="wrap_content"
54             android:layout_height="wrap_content"
55             android:text=""
56             android:background="@drawable/message_text_background02"/> 
57     </RelativeLayout>
58 
59 </LinearLayout>

  1 public class MainActivity extends Activity implements OnClickListener{
  2     EditText et_tony_message;
  3     Button but_tony_send;
  4     
  5     EditText et_hill_message;
  6     Button but_hill_send;
  7     
  8     ListView lv_message;
  9     List<Message> list;
 10     MessageAdapter adapter;
 11     Handler handler=new Handler();
 12     @Override
 13     protected void onCreate(Bundle savedInstanceState) {
 14         super.onCreate(savedInstanceState);
 15         setContentView(R.layout.activity_main);
 16         init();
 17     }
 18 
 19     private void init() {
 20         et_tony_message=(EditText) findViewById(R.id.et_tony_message);
 21         but_tony_send=(Button) findViewById(R.id.but_tony_send);
 22         but_tony_send.setOnClickListener(this);
 23         
 24         et_hill_message=(EditText) findViewById(R.id.et_hill_message);
 25         but_hill_send=(Button) findViewById(R.id.but_hill_send);
 26         but_hill_send.setOnClickListener(this);
 27         
 28         list=new ArrayList<Message>();
 29         lv_message=(ListView) findViewById(R.id.lv_message);
 30         adapter=new MessageAdapter();
 31         lv_message.setAdapter(adapter);
 32     }
 33 
 34 
 35     @Override
 36     public void onClick(View v) {
 37         /*Tony发送消息*/
 38         if(v==but_tony_send){
 39             /*验证*/
 40             if(et_tony_message.getText()==null||et_tony_message.getText().toString().equals("")){
 41                 Toast.makeText(this, "消息不能为空", 0).show();
 42                 return ;
 43             }
 44             Message m=new Message();
 45             m.setFrom_username("Tony");
 46             m.setCreate_time(System.currentTimeMillis());
 47             m.setText(et_tony_message.getText().toString());
 48             sendMessage(m);
 49             et_tony_message.setText("");
 50         }
 51         /*Hill发送消息*/
 52         if(v==but_hill_send){
 53             /*验证*/
 54             if(et_hill_message.getText()==null||et_hill_message.getText().toString().equals("")){
 55                 Toast.makeText(this, "消息不能为空", 0).show();
 56                 return ;
 57             }
 58             Message m=new Message();
 59             m.setFrom_username("Hill");
 60             m.setCreate_time(System.currentTimeMillis());
 61             m.setText(et_hill_message.getText().toString());
 62             sendMessage(m);
 63             et_hill_message.setText("");
 64         }
 65     }
 66     private void sendMessage(Message m) {
 67         list.add(m);
 68         adapter.notifyDataSetChanged();
 69 //        lv_message.f
 70         lv_message.setSelection(list.size()+1);
 71     }
 72     class MessageAdapter extends BaseAdapter{
 73 
 74         @Override
 75         public int getCount() {
 76             return list.size();
 77         }
 78 
 79         @Override
 80         public Object getItem(int position) {
 81             return list.get(position);
 82         }
 83 
 84         @Override
 85         public long getItemId(int position) {
 86             return 0;
 87         }
 88 
 89         @Override
 90         public View getView(int position, View convertView, ViewGroup parent) {
 91             Message message=list.get(position);
 92             ViewHolder viewHolder=null;
 93 //        if(convertView==null){
 94             if("Tony".equalsIgnoreCase(message.getFrom_username())){
 95                 convertView=parent.inflate(MainActivity.this, R.layout.list_message_item_left, null);
 96             }else{
 97                 convertView=parent.inflate(MainActivity.this, R.layout.list_message_item_right, null);
 98             }
 99             viewHolder=new ViewHolder();
100             viewHolder.iv_userhead=(ImageView) convertView.findViewById(R.id.iv_userhead);
101             viewHolder.tv_chatcontent=(TextView) convertView.findViewById(R.id.tv_chatcontent);
102             viewHolder.tv_sendtime=(TextView) convertView.findViewById(R.id.tv_sendtime);
103             viewHolder.tv_username=(TextView) convertView.findViewById(R.id.tv_username);
104 //            convertView.setTag(viewHolder);
105 //        }else{
106 //            viewHolder=(ViewHolder) convertView.getTag();
107 //        }
108             
109             viewHolder.tv_chatcontent.setText(message.getText());
110             viewHolder.tv_sendtime.setText(new SimpleDateFormat("HH:mm:ss").format(new Date(message.getCreate_time())));
111             viewHolder.tv_username.setText(message.getFrom_username());
112             return convertView;
113         }
114         class ViewHolder{
115             public ImageView iv_userhead;
116             public TextView tv_username;
117             public TextView tv_chatcontent;
118             public TextView tv_sendtime;
119         }
120     }
121 }

 1 public class Message {
 2     private String from_username;/*发送者*/
 3     private Long create_time;/*发送时间*/
 4     private String text;/*消息内容*/
 5     public String getFrom_username() {
 6         return from_username;
 7     }
 8     
 9     public Long getCreate_time() {
10         return create_time;
11     }
12     public void setCreate_time(Long create_time) {
13         this.create_time = create_time;
14     }
15     public String getText() {
16         return text;
17     }
18     public void setText(String text) {
19         this.text = text;
20     }
21 
22     public void setFrom_username(String from_username) {
23         this.from_username = from_username;
24     }
25     
26 }