how to set timer for each loop in forloop?

Question

Set timer for each loop means if there are 3 items in an array and to access those we need call forloop. What I want there is when the 1st loop is running it should run up to a specific time. Then the second loop run with the given specific time to it. I already tried with the time delay with Handler but it is not working. In Handler, all loop run at once but execute after the specific time. I don't know how to set the timer for each loop.

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I am accessing the duration value from these above arrays and want to run each loop with their specific duration. I tried with time delay but not working as I want.

   for(int i=0;i<type.size();i++){

                new Handler().postDelayed(new Runnable() {
                    @Override
                    public void run() {
                        Log.e("chekkk",""+i);
                    }
                }, duration.get(i) * 1000);
            }

Possible duplicate of [How to delay a loop in android without using thread.sleep?](https://stackoverflow.com/questions/20896245/how-to-delay-a-loop-in-android-without-using-thread-sleep) — AskNilesh, Apr 16 '18 at 11:07
try to use `ExecutorService` from [concurrency framework](http://www.vogella.com/tutorials/JavaConcurrency/article.html) to run one after other — anatoli, Apr 16 '18 at 11:40
@NileshRathod, No it is not duplicate of that one because I have already go through that question. — Sudhansu Sekhar, Apr 16 '18 at 11:47

WinCloud · Answer 1 · 2018-04-16T11:59:16.693

0

Try post the Runable itself.

//Handler should be saved in object or other way. 
//You must remove all timers and destory it exciplit. 
//Otherwise the Handler and Timers will be leak.
Handler mTimerHandle = new Handler(); 
Long startTime = System.currentTimeMillis();
//...
for(int i=0;i<type.size();i++){
    Runable timer; //You can save it if you want to cancel it.
    long timerDuration = long(duration.get(i) * 1000); //make a variable in for-loop's scope instead i;
    timer = new Runnable() {
        @Override
        public void run() {
            Log.e("chekkk",""+i);
            long nextEmit = (System.currentTimeMillis() - startTime) % timerDuration;
            long passedTime = ((System.currentTimeMillis() - startTime) / timerDuration ) * timerDuration;
            mTimerHandle.postAtTime(timer, passedTime  + nextEmit);
        }
    };

    mTimerHandle.postAtTime(timer , startTime + timerDuration);
}

edited Apr 16 '18 at 11:59

answered Apr 16 '18 at 11:17

WinCloud

183
7

WinCloud, It is exactly working like my code, like which have more duration that loop is executed last, but it should not be like this. It should be like if 1st iteration has a duration for 7minute then it should run for 7 then 2nd iteration should occur but all are occurring at the same time – Sudhansu Sekhar Apr 16 '18 at 11:28
@SudhansuSekhar I has updated other way that use time point post. It emit with same duration forerver. – WinCloud Apr 16 '18 at 11:41
@SudhansuSekhar Sorry I didn't read the problem exhaustive, I has updated the code for the "same duration" problem. Check it. – WinCloud Apr 16 '18 at 11:54
Ohk Wincloud I will check it and let you know – Sudhansu Sekhar Apr 16 '18 at 12:05
Emm…Wait… Are you mean the work should be executed like this? Wait 7s - do A - Wait 2s - do B? – WinCloud Apr 16 '18 at 12:19
No work should be like doA for 7s and then doB for 1s like this – Sudhansu Sekhar Apr 16 '18 at 12:20
Do you mean Sleep? – WinCloud Apr 16 '18 at 12:31

Amir Hossein Mirzaei · Answer 2 · 2018-04-16T11:50:59.647

0

in your code

a : if the first duration be a 7 and multiply to 1000 = 7000 = 7s

b : if second one be a 2 and multiply to 1000 = 2000 = 2s

after 2 second (b) gonna run and after 7 sec or 5 sec after b (a) gonna run

if you want to (b) fired after a you should do the math for duration of the (b) !

for example if post delayed of the a equals to 7s than post delayed of the b should equal to ( 7 + 2 )

you can edit your code like this :

 int totalDuration=0;

 for(int i=0;i<type.size();i++){

                totalDuration+=duration.get(i);

                new Handler().postDelayed(new Runnable() {
                    @Override
                    public void run() {
                        Log.e("chekkk",""+i);
                    }
                }, totalDuration * 1000);
            }

edited Apr 16 '18 at 11:50

answered Apr 16 '18 at 11:26

Amir Hossein Mirzaei

2,325
1
9
17

Amir, you understand my problem correctly. Can you please tell me how can I set the time delay with duration of "a" to "b". Then I think my problem would be solved. – Sudhansu Sekhar Apr 16 '18 at 11:37
@SudhansuSekhar i edited your code and added in my answer let me know if it works – Amir Hossein Mirzaei Apr 16 '18 at 11:52

how to set timer for each loop in forloop?

2 Answers2