Android: Repeat a method and delay other method after x seconds using handle -

i'm new android , have problem used same code repeat , delay method 2 class. 1 class work fine other not. don't know why. code

speedmeterfragment.java

public class speedmeterfragment extends fragment {     ....     public void speedmeterbefore() {         totalrxbytesbefore = trafficstats.gettotalrxbytes();         log.d("test", "before: " + string.valueof(totalrxbytesbefore));     }      public void speedmeterafter() {         totalrxbytesafter = trafficstats.gettotalrxbytes();         log.d("test", "after: " + string.valueof(totalrxbytesafter));     }      public void speedmeterdifference() {         totalrxbytesdifference = totalrxbytesafter - totalrxbytesbefore;         tvtest.settext(string.valueof(totalrxbytesdifference/1024) + " kb/s");         log.d("test", "difference: " + string.valueof(totalrxbytesdifference));     }      public void speedmeter() {         handler = new handler();         handler.post(runnable = new runnable() {              @override             public void run() {                 speedmeterbefore();                 final handler handler1 = new handler();                 handler1.postdelayed(new runnable() {                      @override                     public void run() {                         speedmeterafter();                         speedmeterdifference();                     }                 }, 1000);                 handler.postdelayed(this, 1000);             }         });     } } 

and savedatauseage.java

public class savedatauseage extends broadcastreceiver {     ...      public void onreceive(context context, intent intent) {         ...         savepreference();     }      public void savepreference() {         ...         measuredatamb();             }      public void measuredatambbefore() {         datambbefore = trafficstats.gettotalrxbytes() / 1048576;     }      public void measuredatambafter() {         datambafter = trafficstats.gettotalrxbytes() / 1048576;     }      public void measuredatambdifference() {         datambdifference = datambafter - datambbefore;     }      public void measuredatamb() {         handler = new handler();         handler.post(runnable = new runnable() {              @override             public void run() {                 measuredatambbefore();                 final handler handler1 = new handler();                 handler1.postdelayed(new runnable() {                      @override                     public void run() {                         measuredatambafter();                         measuredatambdifference();                     }                 }, 1000);                 handler.postdelayed(this, 1000);             }         });     } } 

speedmeterfragment work fine, not savedatauseage me? sorry bad english :)

handler = new handler();  final runnable r = new runnable() {     public void run() {  //your method called here         handler.postdelayed(this, 1000);     } };  handler.postdelayed(r, 1000); 

this code repeat method after every second