Android 定时获取系统内存储器信息

package com.status;import java.io.BufferedReader;import java.io.FileReader;import java.io.IOException;import java.util.Timer;import java.util.TimerTask;import android.app.Activity;import android.os.Bundle;import android.os.Handler;import android.os.Message;import android.widget.TextView;public class main extends Activity {    /** Called when the activity is first created. */	private final Timer timer = new Timer();	private TimerTask task;	Handler handler = new Handler() {		@Override		public void handleMessage(Message msg) {			// TODO Auto-generated method stub			//要做的事情			getTotalMemory();		super.handleMessage(msg);		}	};    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.main);                init();    }    private void init(){    	task = new TimerTask() {    		@Override    		public void run() {    			// TODO Auto-generated method stub	    		Message message = new Message();	    		message.what = 1;	    		handler.sendMessage(message);    		}    	};    	timer.schedule(task, 2000, 2000);    }        public void getTotalMemory() {      	TextView tv=(TextView)findViewById(R.id.textView1);        String str1 = "/proc/meminfo";          String str2="";        String retStr="";         try {              FileReader fr = new FileReader(str1);              BufferedReader localBufferedReader = new BufferedReader(fr, 8192);              while ((str2 = localBufferedReader.readLine()) != null) {                  //Log.i(TAG, "---" + str2);              	retStr+=str2+"\r\n";            }              tv.setText(retStr);        } catch (IOException e) {          }      }  }