package com.itheima.bean;import android.graphics.drawable.Drawable;public class TaskInfo {private Drawable icon;private String name;private String size;private boolean isUser;public Drawable getIcon() {return icon;}public void setIcon(Drawable icon) {this.icon = icon;}public String getName() {return name;}public void setName(String name) {this.name = name;}public String getSize() {return size;}public void setSize(String size) {this.size = size;}public boolean isUser() {return isUser;}public void setUser(boolean isUser) {this.isUser = isUser;}@Overridepublic String toString() {return "TaskInfo [name=" + name + ", size=" + size+ ", isUser=" + isUser + "]";}
}

package com.itheima.engine;import java.util.ArrayList;
import java.util.List;import android.app.ActivityManager;
import android.app.ActivityManager.RunningAppProcessInfo;
import android.content.Context;
import android.content.pm.ApplicationInfo;
import android.content.pm.PackageManager;
import android.content.pm.PackageManager.NameNotFoundException;
import android.graphics.drawable.Drawable;
import android.os.Debug.MemoryInfo;
import android.text.format.Formatter;import com.itheima.bean.TaskInfo;
import com.itheima.superman.R;public class TaskInfoProvider {private static String packageName;public static List<TaskInfo>getTaskInfo(Context context){List<TaskInfo> list = new ArrayList<TaskInfo>();ActivityManager am = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);PackageManager pm = context.getPackageManager();List<RunningAppProcessInfo> runningAppProcesses = am.getRunningAppProcesses();for (RunningAppProcessInfo runningAppProcessInfo : runningAppProcesses) {TaskInfo task = null;try {task = new TaskInfo();packageName = runningAppProcessInfo.processName;//得到图标Drawable loadIcon = pm.getPackageInfo(packageName, 0).applicationInfo.loadIcon(pm);task.setIcon(loadIcon);//得到名称task.setName(pm.getPackageInfo(packageName, 0).applicationInfo.loadLabel(pm).toString());//是不是用户程序int flag = pm.getPackageInfo(packageName, 0).applicationInfo.flags;if((flag&ApplicationInfo.FLAG_SYSTEM)==0){task.setUser(true);}else{task.setUser(false);}//得要程序占用运行内存MemoryInfo processMemoryInfo = am.getProcessMemoryInfo(new int[]{runningAppProcessInfo.pid})[0];String size = Formatter.formatFileSize(context, processMemoryInfo.getTotalPrivateDirty()*1024);task.setSize(size);} catch (NameNotFoundException e) {// TODO Auto-generated catch block
                e.printStackTrace();//系统中有些程序是用C语言写的没有图标和名字
                task.setIcon(context.getResources().getDrawable(R.drawable.ic_launcher));task.setName(packageName);}list.add(task);}return list;}
}