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Thursday, November 17, 2016

Use Handler for Android Timer

//run Runnable every 100ms


private Handler handler = new Handler();
handler.postDelayed(runnable, 100);


private Runnable runnable = new Runnable() {
   @Override
   public void run() {
      /* do what you need to do */
      foobar();
      /* and here comes the "trick" */
      handler.postDelayed(this, 100);
   }
};



Android Timer Java

Android handle Timer

Well, after programming a while for Android I got in touch with some things that are different from usual Java. I already mentioned that before, when I decided to start writing about my experiences with Android: Android & Memory (Leaks) ;) This time I’d like to write a bit about Timer and TimerTask and why you shouldn’t use them… While coding for a project I noticed that updating the gui out of a TimerTask didn’t work everytime and specially didn’t work good. Actually it basically never worked and at first I just couldn’t figure what was going on. I put some debugging stuff in the timers and everything seemed to be fine, as the debug messages appeared in the Log. Still: the gui wasn’t affected at all :oogle: So I started with some research and found a lot of people with same effects but just few answers (kind of get used to that ^^). So after some time I found an article on Android Developers: Updating the UI from a Timer. The author is describing a kind of similar problem to mine but still not the same. Anyway, he’s also talking about “The Android way” which basically says: Timer(Tasks) are bad! Do it the Android way: Use a Handler :) Interesting idea so I gave it a try and now it works perfectly . Java for Android, Second Edition: - Hasil Google Books https://books.google.co.id/books?isbn=1771970251 - Terjemahkan laman ini Budi Kurniawan - 2015 - ‎Computers Most of the time, it is used to process messages and schedule a task to run at a future time. ... runs on the thread that created it, which in most cases would be the UI thread. As such, you should not schedule a longrunning task with a Handler ... Multithreading and Concurrency - Java Programming Tutorial https://www3.ntu.edu.sg/home/.../java/j5e_multithreading.html Terjemahkan laman ini 2.2 Example 2: Still Unresponsive UI with Thread ... The term "concurrency" refers to doing multiple tasks at the same time. Java ... The stop-button handler sets the stop flag; while the start-button handler checks if stop flag has been set before ... Android timer? How? - Stack Overflow stackoverflow.com/questions/4597690/android-timer-how Terjemahkan laman ini 4 Jan 2011 - ok since this isn't cleared up yet there are 3 simple ways to handle this. Below is an ... Timer; import java.util. ... Handler; import android.os. Timer | Android Developers https://developer.android.com/reference/java/util/Timer.html Terjemahkan laman ini Java 5.0 introduced the java.util.concurrent package and one of the concurrency utilities therein is the ScheduledThreadPoolExecutor which is a thread pool for ... CountDownTimer | Android Developers https://developer.android.com/.../android/.../CountDownTimer.... Terjemahkan laman ini java.lang.Object. ↳, android.os.CountDownTimer. Schedule a countdown until a time in ... Start the countdown. Inherited methods. From class

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