How to stop the Timer in android

Question

I m developing an application which sends a message to a specific number in a specific period of time  The problem is that it continues sending that message after that period of time  How would I stop the timer after that specific time in order to stop sending that message

User · Answer

In java util timer one can use  cancel   to stop the timer and clear all pending tasks

User · Answer

and   we must call  waitTimer purge    for the GC  If you don t use Timer anymore   purge        purge    removes all canceled tasks from the task queue   if waitTimer    null       waitTimer cancel       waitTimer purge       waitTimer   null

User · Answer

I had a similar problem  every time I push a particular button  I create a new Timer   my timer   new Timer  MY TIMER    my timer schedule new TimerTask             Exiting from that activity I deleted the timer   if my timer  null   my timer cancel    my timer   null      But it was not enough because the cancel   method only canceled the latest Timer  The older ones were ignored an didn t stop running  The purge   method was not useful for me  I solved the problem just checking the Timer instantiation   if my timer    null   my timer   new Timer  MY TIMER    my timer schedule new TimerTask

User · Answer

It says timer   is not available on android  You might find this article useful   http   developer android com resources articles timed-ui-updates html    I was wrong  Timer   is available  It seems you either implement it the way it is one shot operation   schedule TimerTask task  Date when     Schedule a task for single execution    Or you cancel it after the first execution   cancel       Cancels the Timer and all scheduled tasks    http   developer android com reference java util Timer html

User · Answer

I had a similar problem and it was caused by the placement of the Timer initialisation   It was placed in a method that was invoked oftener   Try this   Timer waitTimer     void exampleMethod         if  waitTimer    null           initialize your Timer here                The  cancel    method only canceled the latest Timer  The older ones were ignored an didn t stop running

User · Answer

We can schedule the timer to do the work After the end of the time we set the message won t send   This is the code   Timer timer new Timer    timer scheduleAtFixedRate new TimerTask          Override     public void run                   here you can write the code for send the message                  10  60000     In here the method we are calling is   public void scheduleAtFixedRate  TimerTask task  long delay  long period   In here   task   the task  to schedule  delay  amount of time in milliseconds before first execution   period  amount of time in milliseconds between subsequent executions   For more information you can refer  Android Developer  You can stop the timer by calling   timer cancel

User · Answer

CountDownTimer waitTimer       waitTimer   new CountDownTimer 60000  300            public void onTick long millisUntilFinished                called every 300 milliseconds  which could be used to             send messages or some other action                  public void onFinish                 After 60000 milliseconds  60 sec  finish current              if you would like to execute something when time finishes                           start      to stop the timer early        if waitTimer    null             waitTimer cancel             waitTimer   null

[android] How to stop the Timer in android?

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