java - Timer how long it takes to load another activity -

i wanted you. know how can time how long take load activity

example:

activity a

    oncreate....         intent myintent = new intent(this, activityb.class);         finish();         //start timer here **************         startactivity(myintent); ... 

activity b

oncrate.....  loadplayer(); ....   private void loadplayer() {  //player has been loaded //stop time , print log cat *************** log.i("timer", "it taken = ");  } 

i created small helper class works perfect needs in couple of simple apps:

public class profiler {      private static hashmap<string, long> profiletimes;      public static void startprofiling(string key) {         profiletimes.put(key, system.currenttimemillis());     }      public static void endprofiling(string key) {         endprofiling(key, "");     }      public static void endprofiling(string key, string desc) {         if (profiletimes.get(key) != null) {             long time = system.currenttimemillis() - profiletimes.get(key);             log.d("profiling", key + ", " + desc + ": time: " + (time / 1000) + "." + string.format("%03d", (time % 1000)));             profiletimes.remove(key);         } else {             log.e("profiling", "no profiling found key: " + key);         }     } } 

to use profiler.startprofiling("activityb") , when consider it's loaded -> profiler.endprofiling("activityb")