Android 获取内存信息
<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>public class SystemInfo extends Activity {
private TextView textView,textView2;
ActivityManager am;
ActivityManager.MemoryInfo memoryInfo;
public void 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("本机最大内存："+GetTotalMemory()+"M");
UpdateMemory Update=new UpdateMemory();
Update.start();
}
class UpdateMemory extends Thread{
public void 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> public void handleMessage(Message msg) {
// TODO Auto-generated method stub
if (msg.what==1) {
textView.setText("本机还有内存:"+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;
}
private double GetAvailableMemory(long num)
{
double M;
M=(num/1024)/1024;
return M;
}
}</p>
摘自 伟哥~ YZ
补充：移动开发 , Android ,
