Android 獲取內存信息

什麼都不說了 直接上源碼吧~~ 哇咔咔 ！！！

<p> </p><p>
import java.io.BufferedReader;
import java.io.FileReader;</p><p>import android.app.Activity;
import android.app.ActivityManager;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.widget.TextView;</p><p>publicclass SystemInfo extends Activity {

private TextView textView,textView2;
 ActivityManager am;
 ActivityManager.MemoryInfo memoryInfo;
publicvoid onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
      setContentView(R.layout.sysinfo);
      textView=(TextView) findViewById(R.id.sys_textView1);
      textView2=(TextView) findViewById(R.id.sys_textView2);
       am=(ActivityManager) getSystemService(ACTIVITY_SERVICE);
       memoryInfo=new ActivityManager.MemoryInfo();
       am.getMemoryInfo(memoryInfo);
       textView2.setText("本機最大內存："+GetTotalMemory()+"M");
       UpdateMemory Update=new UpdateMemory();
       Update.start();
  }
class UpdateMemory extends Thread{
publicvoid run() {
while(true){
    Message message=new Message();
//message.obj=GetAvailableMemory(memoryInfo.availMem);
    message.what=1;
       handler.sendMessage(message);
try {
    Thread.sleep(1000);
   } catch (InterruptedException e) {
// TODO Auto-generated catch block
    e.printStackTrace();
   }
  }

 }

   }

    Handler handler=new Handler(){</p><p>  publicvoid handleMessage(Message msg) {
// TODO Auto-generated method stub
if (msg.what==1) {
     textView.setText("本機還有內存:"+GetAvailableMemory(memoryInfo.availMem)+"M");
   }

super.handleMessage(msg);
  }

    };

private Double GetTotalMemory(){

     String str1 = "/proc/meminfo";
     String str2;
     Double memory=0.0 ;
try {
   FileReader r=new FileReader(str1);
   BufferedReader bufferedRead=new BufferedReader(r, 8192);
   str2=bufferedRead.readLine();
   System.err.println("str2--------->"+str2);
//arrayOfString = str2.split("//s+");
///String str3=str2.trim();
//System.out.println("----------------------->"+str3);

           String str4=str2.substring(str2.length()-9, str2.length()-3);
//System.out.println(str4+"         "+str4.length());
   memory=Double.parseDouble(str4)/1000;

  } catch (Exception e) {
// TODO: handle exception
  }
return memory;
    }
privatedouble GetAvailableMemory(long num)
    {
double M;
     M=(num/1024)/1024;

return  M;
    }
}</p>