Android中获取系统内存信息以及进程信息

package com.qin.ammp; import java.util.ArrayList; import java.util.List; import android.app.Activity; import android.app.ActivityManager; import android.app.AlertDialog; import android.app.Dialog; import android.content.Context; import android.content.DialogInterface; import android.os.Bundle; import android.os.Debug; import android.util.Log; import android.view.ContextMenu; import android.view.Menu; import android.view.MenuItem; import android.view.View; import android.view.ContextMenu.ContextMenuInfo; import android.widget.AdapterView; import android.widget.ListView; import android.widget.TextView; import android.widget.AdapterView.OnItemClickListener; public class BrowseProcessInfoActivity extends Activity implements OnItemClickListener{ private static String TAG = "ProcessInfo"; private static final int KILL_PORCESS = 1; private static final int SEARCH_RUNNING_APP = 2; private ActivityManager mActivityManager = null; // ProcessInfo Model类 用来保存所有进程信息 private List<ProcessInfo> processInfoList = null; private ListView listviewProcess; private TextView tvTotalProcessNo ; public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.browse_process_list); listviewProcess = (ListView) findViewById(R.id.listviewProcess); listviewProcess.setOnItemClickListener(this); tvTotalProcessNo =(TextView)findViewById(R.id.tvTotalProcessNo); this.registerForContextMenu(listviewProcess); // 获得ActivityManager服务的对象 mActivityManager = (ActivityManager) getSystemService(Context.ACTIVITY_SERVICE); // 获得系统进程信息 getRunningAppProcessInfo(); // 为ListView构建适配器对象 BrowseProcessInfoAdapter mprocessInfoAdapter = new BrowseProcessInfoAdapter( this, processInfoList); listviewProcess.setAdapter(mprocessInfoAdapter); tvTotalProcessNo.setText("当前系统进程共有："+processInfoList.size()); } //杀死该进程，并且刷新 @Override public void onItemClick(AdapterView<?> arg0, View arg1, final int position, long arg3) { // TODO Auto-generated method stub new AlertDialog.Builder(this).setMessage("是否杀死该进程") .setPositiveButton("确定", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { // TODO Auto-generated method stub //杀死该进程，释放进程占用的空间 mActivityManager.killBackgroundProcesses(processInfoList.get(position).getProcessName()); //刷新界面 getRunningAppProcessInfo() ; BrowseProcessInfoAdapter mprocessInfoAdapter = new BrowseProcessInfoAdapter( BrowseProcessInfoActivity.this, processInfoList); listviewProcess.setAdapter(mprocessInfoAdapter); tvTotalProcessNo.setText("当前系统进程共有："+processInfoList.size()); } }).setNegativeButton("取消", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { // TODO Auto-generated method stub dialog.cancel() ; } }).create().show() ; } // 获得系统进程信息 private void getRunningAppProcessInfo() { // ProcessInfo Model类 用来保存所有进程信息 processInfoList = new ArrayList<ProcessInfo>(); // 通过调用ActivityManager的getRunningAppProcesses()方法获得系统里所有正在运行的进程 List<ActivityManager.RunningAppProcessInfo> appProcessList = mActivityManager .getRunningAppProcesses(); for (ActivityManager.RunningAppProcessInfo appProcessInfo : appProcessList) { // 进程ID号 int pid = appProcessInfo.pid; // 用户ID 类似于Linux的权限不同，ID也就不同 比如 root等 int uid = appProcessInfo.uid; // 进程名，默认是包名或者由属性android：process=""指定 String processName = appProcessInfo.processName; // 获得该进程占用的内存 int[] myMempid = new int[] { pid }; // 此MemoryInfo位于android.os.Debug.MemoryInfo包中，用来统计进程的内存信息 Debug.MemoryInfo[] memoryInfo = mActivityManager .getProcessMemoryInfo(myMempid); // 获取进程占内存用信息 kb单位 int memSize = memoryInfo[0].dalvikPrivateDirty; Log.i(TAG, "processName: " + processName + " pid: " + pid + " uid:" + uid + " memorySize is -->" + memSize + "kb"); // 构造一个ProcessInfo对象 ProcessInfo processInfo = new ProcessInfo(); processInfo.setPid(pid); processInfo.setUid(uid); processInfo.setMemSize(memSize); processInfo.setPocessName(processName); processInfoList.add(processInfo); // 获得每个进程里运行的应用程序(包),即每个应用程序的包名 String[] packageList = appProcessInfo.pkgList; Log.i(TAG, "process id is " + pid + "has " + packageList.length); for (String pkg : packageList) { Log .i(TAG, "packageName " + pkg + " in process id is -->" + pid); } } } public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) { menu.add(0, 0, KILL_PORCESS, "杀死该进程"); menu.add(0, 0, SEARCH_RUNNING_APP, "运行在该进程的应用程序"); super.onCreateContextMenu(menu, v, menuInfo); } public boolean onContextItemSelected(MenuItem item) { switch (item.getItemId()) { case KILL_PORCESS: // 杀死该进程 ， 重新加载界面 new AlertDialog.Builder(this).setMessage("是否杀死该进程") .setPositiveButton("确定", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { // TODO Auto-generated method stub } }).setNegativeButton("取消", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { // TODO Auto-generated method stub dialog.cancel() ; } }).create().show() ; break; case SEARCH_RUNNING_APP: // 查看运行在该进程的应用程序信息 break; default: break; } return super.onContextItemSelected(item); } }