Service绑定日期

Service分类：Start启动和bound绑定

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下面主要讲继承Binder类输出当前时间（主要实现onBind（）回调方法）

测试如下：

Service绑定日期

其实就3步！

第一.TimeService类

package com.example.timeservice;

import android.app.Service;
import android.content.Intent;
import android.os.Binder;
import android.os.IBinder;
import android.text.format.Time;

public class TimeService extends Service {
   private IBinder binder=new localBinder();

   public class localBinder extends Binder{
       TimeService getService(){
           return TimeService.this;
       }
   }
   public IBinder onBind(Intent arg0) {
       // TODO Auto-generated method stub
       return binder;
   }

   public String getCurrentTime(){
       Time time =new Time();
       time.setToNow();
       String stringtime=time.format("%Y-%m-%d %H:%M:%S");
       return stringtime;
   }
}

第二.MainActivity

package com.example.timeservice;

import java.util.Random;

import com.example.timeservice.TimeService.localBinder;

import android.os.Bundle;
import android.os.Handler;
import android.os.IBinder;
import android.os.Message;
import android.app.Activity;
import android.content.ComponentName;
import android.content.Intent;
import android.content.ServiceConnection;
import android.widget.TextView;

public class MainActivity extends Activity {

   protected TimeService cts;
   boolean bound;
   Handler handler=null;
   TextView text;
   TextView text2;
   private int i=0;
   protected void onCreate(Bundle savedInstanceState) {
       super.onCreate(savedInstanceState);
       setContentView(R.layout.activity_main);
        text=(TextView)findViewById(R.id.text);
        text2=(TextView)findViewById(R.id.text2);
       handler=new Handler(){
           public void handleMessage(Message msg){
               if(msg.what==0x101){
                   onStart();
                   text2.setText("测试:"+i);
               }
               super.handleMessage(msg);
           }
        };
       Thread t=new Thread(new Runnable(){

               public void run() {
                   while(!Thread.currentThread().isInterrupted()){
                   i++;
                   Message m=handler.obtainMessage();
                   m.what=0x101;
                   handler.sendMessage(m);
                   try {
                       Thread.sleep(1000);
                   } catch (InterruptedException e) {
                       // TODO Auto-generated catch block
                       e.printStackTrace();
                   }

               }
               }
           });
       t.start();
   }


   protected void onStart(){
       super.onStart();
        Intent intent=new Intent(MainActivity.this,TimeService.class);
        bindService(intent, sc, BIND_AUTO_CREATE);
        if(bound)
       text.setText(cts.getCurrentTime());

   }
   protected void onStop(){
       super.onStop();
       if(bound){
           bound=false;
           unbindService(sc);
       }
   }
   private ServiceConnection sc=new ServiceConnection() {

       public void onServiceDisconnected(ComponentName arg0) {
           // TODO Auto-generated method stub
           bound=false;

       }

       public void onServiceConnected(ComponentName arg0, IBinder arg1) {
           // TODO Auto-generated method stub
           localBinder binder=(localBinder)arg1;
           cts=binder.getService();
           bound=true;
       }
   };
}

3.xml

    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context=".MainActivity" >

            android:id="@+id/text2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignBottom="@+id/button"
        android:layout_alignParentLeft="true"
        android:layout_alignParentRight="true"
        android:text="----------"
        android:textSize="30dp" />

            android:id="@+id/text"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_alignRight="@+id/text2"
        android:layout_below="@+id/text2"
        android:layout_marginTop="16dp"
        android:text="----------"
        android:textSize="30dp" />

GG!!!!就这么简单，主要是练习Service应用

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