package linuxidc.process;

import java.util.List;
import android.os.Bundle;
import android.os.Debug.MemoryInfo;
import android.widget.TextView;
import android.app.Activity;
import android.app.ActivityManager;
import android.app.ActivityManager.RunningAppProcessInfo;
import android.content.Context;

public class MainActivity extends Activity {

?@Override
?protected void onCreate(Bundle savedInstanceState) {
? super.onCreate(savedInstanceState);
? setContentView(R.layout.activity_main);

? TextView tv = (TextView) findViewById(R.id.textView);

? ActivityManager activityManager = (ActivityManager) getSystemService(Context.ACTIVITY_SERVICE);

? String all = "";
? try {
? ?List list = activityManager
? ? ?.getRunningAppProcesses();

? ?for (int i = 0; i < list.size(); i++) {
? ? RunningAppProcessInfo p = list.get(i);
? ?
? ? String info = "第 " + (i + 1) + " 个进程\n";
? ? info += "名称:" + p.processName + "\n";
? ? info += "id:" + p.pid + "\n";
? ? info += "用户id:" + p.uid + "\n";
? ? // 该进程使用的内存情况，MemoryInfo单位是KB
? ? int[] memoryPid = new int[] { p.pid };
? ? MemoryInfo[] memoryInfo = activityManager
? ? ? .getProcessMemoryInfo(memoryPid);
? ? // 进程内存使用情况，单位:MB
? ? int memSize = memoryInfo[0].dalvikPrivateDirty;
? ? String count = "";
? ? if (memSize < 1024)
? ? ?count = memSize + " KB";
? ? else
? ? ?count = memSize / 1024 + " MB";

? ? info += "使用的内存(dalvikPrivateDirty): " + count + "\n";
? ? info += "重要级:" + p.importance + "\n";

? ? all = all + info + "\n";
? ?}

? } catch (Exception e) {
? ?e.printStackTrace();
? }

? tv.setText(all);
?}
}

需要在AndroidManifest.xml添加权限：

MainActivity.java需要的activity_main.xml文件：

? ? ? ? ? android:layout_width="match_parent"
? ? ? ? android:layout_height="match_parent" >

? ? ? ? ? ? ? ? android:id="@+id/textView"
? ? ? ? android:layout_width="match_parent"
? ? ? ? android:layout_height="match_parent" />
? ? ? ?
? ?