實作IPC LED控制程式

以下程式用於DMA-6410L 開發平台，其步驟如下：
1.新增新的activity元件。
2.修改activityMain.java，更換執行元件。
3.新增AIDL檔案。
4. 新增LED Service程式。
5. 修改LED Activity程式。
6. 修改Manifest檔案。
7. 安裝與測試













LedIPCactivity.java程式列表

package tw.com.dmatek.dma6410xp.ipc;

import tw.com.dmatek.dma6410xp.R;
import tw.com.dmatek.dma6410xp.led.Linuxc;
import android.app.Activity;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.ServiceConnection;
import android.os.Bundle;
import android.os.IBinder;
import android.os.RemoteException;
import android.view.View;
import android.widget.Button;

public class LedIPCactivity extends Activity {
    /** Called when the activity is first created. */
    
    private Button mButton1; 
    private Button mButton2;
    private Button mButton3;
    private Button mButton4;
    private Button mButton5;

        public  int state1=0,state2=0;      
       public  int led_on = 1; 
     public  int led_off = 2;
 public  int fd = 0;
   
 
 private Button.OnClickListener button1_listener= new Button.OnClickListener()
 {
  public void onClick(View v)
        {
          
          
           
         //Linuxc.send(2, led_on);
   try {
    ledService.TurnOn(2);
   } catch (RemoteException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
   }
         
         
        }
 };
 
 private Button.OnClickListener button4_listener= new Button.OnClickListener()
 {
  public void onClick(View v)
        {
          
          
         // Linuxc.send(2, led_off);
   try {
    ledService.TurnOff(2);
   } catch (RemoteException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
   }
          
        }
 };
 
 private Button.OnClickListener button5_listener= new Button.OnClickListener()
 {
  public void onClick(View v)
  {
         
          
          //Linuxc.send(1, led_off);
   try {
    ledService.TurnOff(1);
   } catch (RemoteException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
   }
  }   
 };
 
 
 
 private Button.OnClickListener button2_listener= new Button.OnClickListener(){
    public void onClick(View v)
          {
           
           //Linuxc.send(1, led_on);
     try {
    ledService.TurnOn(1);
   } catch (RemoteException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
   }
              
            }
 };
 private Button.OnClickListener button3_listener= new Button.OnClickListener(){
   public void onClick(View v)
         {
 
           finish();
           }
 };
 private ILedService ledService=null;
 private ServiceConnection mConnection = new ServiceConnection(){

  @Override
  public void onServiceConnected(ComponentName arg0, IBinder arg1) {
   // TODO Auto-generated method stub
   ledService=ILedService.Stub.asInterface(arg1);
  }

  @Override
  public void onServiceDisconnected(ComponentName arg0) {
   // TODO Auto-generated method stub
   
  }
  
 };
 
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.led);
        
        mButton1=(Button)findViewById(R.id.led_myButton1);
        mButton2 =(Button) findViewById(R.id.led_myButton2);
        mButton3 =(Button) findViewById(R.id.led_myButton3);
        mButton4 =(Button) findViewById(R.id.led_myButton1_1);
        mButton5 =(Button) findViewById(R.id.led_myButton2_1);
        

  bindService(new Intent(LedIPCactivity.this, LedService.class), mConnection , Context.BIND_AUTO_CREATE);
        
         
        mButton1.setOnClickListener(button1_listener);
        
        mButton2.setOnClickListener(button2_listener);
        
        
        mButton3.setOnClickListener(button3_listener);
        mButton4.setOnClickListener(button4_listener);
        mButton5.setOnClickListener(button5_listener);
   
    }
}

LedService.java列表

package tw.com.dmatek.dma6410xp.ipc;

import android.app.Service;
import android.content.Intent;
import android.os.IBinder;
import android.os.RemoteException;
import tw.com.dmatek.dma6410xp.led.Linuxc;;

public class LedService extends Service {
    public  int led_on = 1; 
    public  int led_off = 2;
    public  int fd = -1;
 private ILedService.Stub mbinder=new ILedService.Stub(){

  @Override
  public void TurnOff(int port) throws RemoteException {
   // TODO Auto-generated method stub
   if(fd>=0) Linuxc.send(port, led_off);
  }

  @Override
  public void TurnOn(int port) throws RemoteException {
   // TODO Auto-generated method stub
   if(fd>=0) Linuxc.send(port, led_on);
  }
  
 };
 @Override
 public IBinder onBind(Intent arg0) {
  // TODO Auto-generated method stub
  fd=Linuxc.openled();
  return mbinder;
 }
 @Override
 public boolean onUnbind(Intent intent) {
  // TODO Auto-generated method stub
  Linuxc.closeled();
  return super.onUnbind(intent);
  
 }

}