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Threads in Android

Many of the network activities delay the program and the screen looks unresponsive. And ultimately you will get ANR.
  You can overcome this with a thread


class MyThread extends Thread{

      public MyThread(){
          //initialise your variables
      }
      public void run(){
         //write your expensive code here
     }
};

  In your ui therad you instantiate this thread


    MyThread myt = new MyThread(a,b,c);
    myt.start();

User will not notice the delay as myt is not in ui thread
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