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   源码介绍

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package com.topeet.cantest;

import java.util.Timer;
import java.util.TimerTask;

import com.topeet.hardware.CanControl;
import com.topeet.hardware.CanFrame;
import android.os.Bundle;
import android.app.Activity;
import android.util.Log;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.os.Handler;
import android.os.Message;

public class MainActivity extends Activity {

	/****************************************/
	private CanFrame mcanFrame, scanFrame;
	private int CanId = 0x123;
	
	public Timer timer;

	Handler handler;
	
	String rxIdCode = "";
	String tag = "serial test";
	
	private EditText ET1;
	private Button RECV;
	private Button SEND;
	/****************************************/
	
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		
		/********************************************/
		ET1 = (EditText)findViewById(R.id.edit1);
        RECV = (Button)findViewById(R.id.recv1);
        SEND = (Button)findViewById(R.id.send1);
		
		scanFrame = new CanFrame();
		
		CanControl.InitCan(50000);
		
		CanControl.OpenCan();
		
		RECV.setOnClickListener(new manager());
        
        SEND.setOnClickListener(new manager());
        
        timer = new Timer();
        setTimerTask();
        
        handler = new Handler() {
			@Override
			public void handleMessage(Message msg) {
					super.handleMessage(msg);
					//Log.d(tag,"send start ...");
					ET1.append("canid:0x"
								  Integer.toHexString(mcanFrame.can_id)
								  "  data:"   mcanFrame.data   "  length:"
								  Integer.toString(mcanFrame.can_dlc)   "\n");
					if(msg.what ==1){
					}
			  }
		};

        /*********************************************/
        
	}

	
	private void setTimerTask() {
		timer.schedule(new TimerTask()
		{
			@Override
			public void run() 
			{
				mcanFrame = CanControl.CanRead(scanFrame, 1);
				
				if (mcanFrame.can_id != 0) {
					Message smsg = new Message();
					smsg.what = 1;
					handler.sendMessage(smsg);
				}
			}
					
		}, 100, 100);
	}

	
	/***********************************************/
	 class manager implements OnClickListener{
		public void onClick(View v) {
			String rxIdCode = "";
			String str;
			
			int i;
			switch (v.getId()) {
			//recvive
			case R.id.recv1:
				
				Log.d(tag,"recv start ...");
				
				//if(RX == null)return;
				mcanFrame = CanControl.CanRead(scanFrame, 1);
				Log.d(tag,"display recv data ...");
			
				break;
				
			//send
			case R.id.send1:
				Log.d(tag,"send start ..."); 
				
				CharSequence tx = ET1.getText();
				
				char[] text = new char[tx.length()];
				
            for (i=0; i<tx.length(); i  ) 
            {
                    text[i] = tx.charAt(i);
            }

            	CanControl.CanWrite(CanId, String.copyValueOf(text, 0, i));
				
				ET1.setText("");
			}
		}
	}
 /***********************************************/
	
	@Override
	public boolean onCreateOptionsMenu(Menu menu) {
		// Inflate the menu; this adds items to the action bar if it is present.
		getMenuInflater().inflate(R.menu.main, menu);
		return true;
	}

	
	/* add by cym 20140617 */
	static {
        System.loadLibrary("canjni");
	}
	/* end add */
}