Android获得全部进程信息，并获得该进程使用的内存情况。

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" />