android客户端用bindservice来动态更新UI数据的实例

上一篇文章是用线程来弄，但这样会很容易丢失数据，所以又研究了service，其实都是网上的例子，但那些例子都用button.onclicklistener方法获取数据，为了可以动态更新数据，我调试了很久。鉴于自己研究浪费太多时间，拿出来分享下。代码只有客户端。

1、login.xml:

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent"     android:orientation="vertical">           <TableLayout          android:layout_width="fill_parent"     android:layout_height="wrap_content"            >        <TableRow>            <TextView                 android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="账号："                />       <EditTextandroid:id="@+id/username"android:layout_width="200dp"android:layout_height="wrap_content"android:layout_marginLeft="10dp"    android:layout_marginTop="10dp"    android:layout_marginRight="10dp"    android:hint="账号"/>         </TableRow>          <TableRow>            <TextView                 android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="密码："                />        <EditTextandroid:id="@+id/password"android:password="true"android:layout_width="200dp"android:layout_height="wrap_content"android:layout_marginLeft="10dp"    android:layout_marginTop="10dp"    android:layout_marginRight="10dp"android:hint="密码"/>         </TableRow>                            </TableLayout>         <Buttonandroid:id="@+id/login"android:layout_width="fill_parent"android:layout_height="wrap_content"android:layout_marginLeft="10dp"android:layout_marginTop="10dp"android:layout_marginRight="10dp"android:text="登录"/></LinearLayout>

success.xml:

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent"     android:orientation="vertical">        <TextView         android:id="@+id/success"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="不断接受信息，并提示"        />    <EditText         android:id="@+id/message"        android:layout_width="fill_parent"        android:layout_height="wrap_content"        android:cursorVisible="false"        />       </LinearLayout>

2、类

LoginActivity03.java:

import java.io.BufferedReader;import java.io.BufferedWriter;import java.io.DataInputStream;import java.io.DataOutputStream;import java.io.IOException;import java.io.InputStreamReader;import java.io.OutputStream;import java.io.OutputStreamWriter;import java.io.PrintWriter;import java.net.Socket;import java.net.UnknownHostException;import com.login.MD5;import com.login.R;import com.util.ApplicationUtil;import android.app.Activity;import android.content.Intent;import android.os.Bundle;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.EditText;import android.widget.Toast;public class LoginActivity03 extends Activity{private EditText usernameT;private EditText passwordT;private Button loginButton;private Socket socket;private DataOutputStream out;private DataInputStream in;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.login);usernameT = (EditText) findViewById(R.id.username);passwordT = (EditText) findViewById(R.id.password);loginButton = (Button) findViewById(R.id.login);loginButton.setOnClickListener(new OnClickListener(){public void onClick(View v) {ApplicationUtil appUtil =  (ApplicationUtil) LoginActivity03.this.getApplication();try {appUtil.init();Socket socket = appUtil.getSocket();out = appUtil.getOut();in = appUtil.getIn();} catch (IOException e1) {e1.printStackTrace();} catch (Exception e1) {e1.printStackTrace();}String username = usernameT.getText().toString();String password = passwordT.getText().toString();MD5 md5 = new MD5();String ss = md5.MD5(username+"|"+password);try {//发送数据String str = "[login]|"+ss; //String str = "[login]|"+md5.MD5(username)+"|"+md5.MD5(password);out.writeBytes(str);out.flush();System.out.println("str ===> "+str); //创建一个缓冲字节数int r = in.available();  while(r==0){   r = in.available();  }  byte[] b = new byte[r];in.read(b);String result = new String(b,"utf-8");System.out.println("result = "+result);if(result.equals("登陆成功")){Intent intent = new Intent();intent.setClass(LoginActivity03.this, MainActivity03.class);startActivity(intent);}else{Toast.makeText(LoginActivity03.this, "登录失败！！！", Toast.LENGTH_LONG).show();System.out.println("登录失败！！！");Intent intent = new Intent();intent.setClass(LoginActivity03.this, MainActivity03.class);startActivity(intent);}} catch (UnknownHostException e) {e.printStackTrace();} catch (IOException e) {e.printStackTrace();}}});}}

MainActivity03.java:

import java.io.BufferedReader;import java.io.DataInputStream;import java.io.IOException;import java.io.InputStreamReader;import java.net.Socket;import com.broadcast.UpdateService.UpdateData;import com.image.TestActivity;import com.login.R;import com.util.ApplicationUtil;import android.media.RingtoneManager;import android.net.Uri;import android.os.Bundle;import android.os.Handler;import android.os.IBinder;import android.os.Looper;import android.os.Message;import android.provider.MediaStore.Audio;import android.app.Activity;import android.app.Notification;import android.app.NotificationManager;import android.app.PendingIntent;import android.content.BroadcastReceiver;import android.content.ComponentName;import android.content.Context;import android.content.Intent;import android.content.IntentFilter;import android.content.ServiceConnection;import android.util.Log;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.EditText;import android.widget.Toast;public class MainActivity03 extends Activity { private EditText mess;  private Button kk; private UpdateService.MyBinder serviceBinder;  private ServiceConnection serviceConn = new ServiceConnection(){public void onServiceConnected(ComponentName arg0, IBinder service) {serviceBinder = (UpdateService.MyBinder)service; if(serviceBinder!=null)        {    serviceBinder.setDate(mess, new UpdateData() {                   public void update(EditText mess, String data) {                    mess.append(data+"\n");                }            });        } }public void onServiceDisconnected(ComponentName arg0) {serviceBinder = null;}};     @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.success);        mess = (EditText) findViewById(R.id.message);                Intent intent = new Intent(MainActivity03.this,UpdateService.class);        this.bindService(new Intent("com.broadcast.UpdateService"),this.serviceConn,BIND_AUTO_CREATE);          }       @Override    protected void onDestroy() {    this.unbindService(serviceConn);    super.onDestroy(); //注意先后    }}

UpdateService.java:
import java.io.DataInputStream;import java.io.IOException;import com.login.MainActivity;import com.util.ApplicationUtil;import android.app.Service;import android.content.Intent;import android.os.Binder;import android.os.Handler;import android.os.IBinder;import android.os.Message;import android.util.Log;import android.widget.EditText;public class UpdateService extends Service {    private String data;    private Handler handler;    public boolean isRunning;    private DataInputStream in;    @Override    public IBinder onBind(Intent intent) {        return new MyBinder();    }        @Overridepublic void onCreate() {super.onCreate(); ApplicationUtil appUtil = (ApplicationUtil) UpdateService.this.getApplication(); in = appUtil.getIn();}public class MyBinder extends Binder {        public void setDate(final EditText tv, final UpdateData updata)         {            new Thread(new oneThread()).start();            handler = new Handler() {                public void handleMessage(Message msg) {                    updata.update(tv,data);                }            };        }    } public interface UpdateData {        public void update(EditText tv, String data);    } public class oneThread implements Runnable{ public boolean isRunning = true;public void run() { while(isRunning){try {Thread.sleep(500); //创建一个缓冲字节数int r = in.available();while(r==0){   r = in.available();  }byte[] b = new byte[r];in.read(b);data = new String(b,"utf-8");//每当读到来自服务器的数据后，发送消息通知程序页面显示数据    Message msg = handler.obtainMessage();  msg.obj = data;  handler.sendMessage(msg);  Log.v("thread", data);} catch (IOException e) {e.printStackTrace();} catch (InterruptedException e) {e.printStackTrace();} }}}   }
ApplicationUtil.java:
import java.io.DataInputStream;import java.io.DataOutputStream;import java.io.IOException;import java.net.Socket;import java.net.UnknownHostException;import java.util.ArrayList;import java.util.List;import android.app.Application;public class ApplicationUtil extends Application{private Socket socket;private DataOutputStream out = null;private DataInputStream in = null;public ApplicationUtil() throws IOException {super();}public void init() throws IOException, Exception{this.socket = new Socket("192.168.1.104",10202);this.out = new DataOutputStream(socket.getOutputStream());this.in = new DataInputStream(socket.getInputStream());}public Socket getSocket() {return socket;}public void setSocket(Socket socket) {this.socket = socket;}public DataOutputStream getOut() {return out;}public void setOut(DataOutputStream out) {this.out = out;}public DataInputStream getIn() {return in;}public void setIn(DataInputStream in) {this.in = in;}}
测试效果的图片，我也想黏贴上去，不知道怎弄。流程就是登陆成功后，跳转到MainActivity03的界面，这个界面会不断从输入流读出数据到控件中。

左边是服务端的数据窗口，
	
				
	
					   
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