Android obtains the running status and other information of an Activity (application ).

Android obtains the running status and other information of an Activity (application ).

Checks whether an Activity is on the top of the current Task stack.

public static boolean isTopActivy(String cmdName, Context context)    {        ActivityManager manager = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);        List
 
   runningTaskInfos = manager.getRunningTasks(Integer.MAX_VALUE);        String cmpNameTemp = null;        if (null != runningTaskInfos)        {            cmpNameTemp = (runningTaskInfos.get(0).topActivity).toString();        }        if (null == cmpNameTemp)        {            return false;        }                return cmpNameTemp.equals(cmdName);    }
 

 

Determine whether the Android Application is on the frontend

public static boolean isAppOnForeground(Context context)    {        ActivityManager activityManager = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);        String packageName = context.getPackageName();        List
 
   appTask = activityManager.getRecentTasks(Integer.MAX_VALUE, 1);                if (appTask == null)        {            return false;        }                if (appTask.get(0).baseIntent.toString().contains(packageName))        {            return true;        }        return false;    }
 

 

Obtain all desktops installed on your Android phone

private static List
 
   getAllTheLauncher(Context context)    {        List
  
    names = null;        PackageManager pkgMgt = context.getPackageManager();        Intent it = new Intent(Intent.ACTION_MAIN);        it.addCategory(Intent.CATEGORY_HOME);        List
   
     ra = pkgMgt.queryIntentActivities(it, 0);        if (ra.size() != 0)        {            names = new ArrayList
    
     ();        }        for (int i = 0; i < ra.size(); i++)        {            String packageName = ra.get(i).activityInfo.packageName;            names.add(packageName);        }        return names;    }
    
   
  
 

Android determines the frontend and backend status of a program

public static boolean isLauncherRunnig(Context context)    {        boolean result = false;        List
 
   names = getAllTheLauncher(context);        ActivityManager mActivityManager = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);        List appList = mActivityManager.getRunningAppProcesses();        for (RunningAppProcessInfo running : appList)        {            if (running.importance == RunningAppProcessInfo.IMPORTANCE_FOREGROUND)            {                for (int i = 0; i < names.size(); i++)                {                    if (names.get(i).equals(running.processName))                    {                        result = true;                        break;                    }                }            }        }        return result;    }