广播接收器来检测应用程序启动

问题描述

我想捕捉每当用户使用我的广播接收机启动任何应用程序的时间。是有可能，一个广播接收器可以捕获这样的事件？如果是的话，有没有permision能做到这一点？

I want to capture the time whenever a user starts any application using my broadcast receiver.is it possible that a broadcast receiver can catch such an event??if yes , is there any permision which can do that?

推荐答案

您可以做的就是创建一个粘滞服务跟踪所有正在运行的应用程序的最好的。

The best you can do is create a STICKY Service that tracks all of the running application.

 @Override
public int onStartCommand(Intent intent, int flags, int startId)
{

    Timer timer  =  new Timer();
    timer.scheduleAtFixedRate(new TimerTask() {

        public void run()
        {
            final ActivityManager activityManager  =  (ActivityManager)getSystemService(Context.ACTIVITY_SERVICE);
            final List<RunningTaskInfo> services  =  activityManager.getRunningTasks(Integer.MAX_VALUE);
                 for (int i = 0; i < services.size(); i++) {
                     if(!stalkList.contains(services.get(i).baseActivity.getPackageName()))
                     {
                          // you may broad cast a new application launch here.
                          stalkList.add(services.get(i).baseActivity.getPackageName());
                     }
                }

                 List<RunningAppProcessInfo> procInfos = activityManager.getRunningAppProcesses();
                for(int i = 0; i < procInfos.size(); i++) {

                    ArrayList<String> runningPkgs = new ArrayList<String>(Arrays.asList(procInfos.get(i).pkgList));

                    Collection diff = subtractSets(runningPkgs, stalkList);

                    if(diff != null)
                    {
                        stalkList.removeAll(diff);
                    }
               }


        }
    }, 20000, 6000);  // every 6 seconds


    return START_STICKY;
}




private RunningAppProcessInfo getForegroundApp() {
    RunningAppProcessInfo result = null, info = null;

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

    List <RunningAppProcessInfo> l = activityManager.getRunningAppProcesses();
    Iterator <RunningAppProcessInfo> i = l.iterator();
    while(i.hasNext()) {
        info = i.next();
        if(info.importance == RunningAppProcessInfo.IMPORTANCE_FOREGROUND
                && !isRunningService(info.processName)) {
            result = info;
            break;
        }
    }
    return result;
}

private boolean isRunningService(String processName) {
    if(processName == null)
        return false;

    RunningServiceInfo service;

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

    List <RunningServiceInfo> l = activityManager.getRunningServices(9999);
    Iterator <RunningServiceInfo> i = l.iterator();
    while(i.hasNext()){
        service = i.next();
        if(service.process.equals(processName))
            return true;
    }
    return false;
}

private boolean isRunningApp(String processName) {
    if(processName == null)
        return false;

    RunningAppProcessInfo app;

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

    List <RunningAppProcessInfo> l = activityManager.getRunningAppProcesses();
    Iterator <RunningAppProcessInfo> i = l.iterator();
    while(i.hasNext()){
        app = i.next();
        if(app.processName.equals(processName) && app.importance != RunningAppProcessInfo.IMPORTANCE_SERVICE)
            return true;
    }
    return false;
}


private boolean checkifThisIsActive(RunningAppProcessInfo target){
    boolean result = false;
    ActivityManager.RunningTaskInfo info;

    if(target == null)
        return false;

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

    List <ActivityManager.RunningTaskInfo> l = activityManager.getRunningTasks(9999);
    Iterator <ActivityManager.RunningTaskInfo> i = l.iterator();

    while(i.hasNext()){
        info=i.next();
        if(info.baseActivity.getPackageName().equals(target.processName)) {
            result = true;
            break;
        }
    }

    return result;
}


// what is in b that is not in a ?
public static Collection subtractSets(Collection a, Collection b)
{
    Collection result = new ArrayList(b);
    result.removeAll(a);
    return result;
}

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