android项目获得所有运行程序

首先也是要建立一个javabean

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;
    }

    @Override
    public String toString() {
        return "TaskInfo [name=" + name + ", size=" + size
                + ", isUser=" + isUser + "]";
    }
}

然后通过activitymanager来获取运行中程序的list集合

通过遍历集合获得包名，

在通过packagemanager和包名来获得其他信息

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;

    }
}