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Questions tagged [postdelayed]

176 questions
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How do I avoid a handler.postDelayed(Runnable run) from being called?

I have this method to scan Bluetooth LE devices. The scanner runs asynchronously for 10s and then it is interrupted. public void startScanning() { Handler handler = new Handler(); final long SCAN_PERIOD = 10000; handler.postDelayed(new…
raff5184
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Run a method periodically using ktx handler extensions

UPDATE: Clarification, I am looking for an extension to run a function every 1000 ms for example, without needing to use handler.postDelayed twice. I've recently started using the android-ktx Kotlin extensions. And I've run into the handler…
Aleks Nine
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handler.postDelayed vs. AlarmManager vs

I have a minor problem in one of my apps. It uses a BroadCastReceiver to detect when a call finishes and then performs some minor housekeeping tasks. These have to be delayed for a few seconds, to allow the user to see some data and to ensure that…
alibi
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postDelayed() not working in Android service with START_STICKY and startForeground

I have a service class BusLocationService : Service() which is started as START_STICKY and shows a permanent notification. override fun onStartCommand(intent: Intent, flags: Int, startId: Int): Int { if (intent.action ==…
Slawa
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handler.postDelayed() not stopping

I am updating my UI using the handler.postDelayed() but it is not stopping when I'm wanting it to stop. it keeps updating the UI. int progress = 10; Runnable mStatusChecker = new Runnable() { @Override public void run() { try { …
TheNoob
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Simon Says button color won't return to normal after button press

public void flashButton(int color) { final ImageView colors = findViewById(R.id.buttonsImage); final int newColor = color; Handler handler = new Handler(); final Runnable r = new Runnable() { public void run() { …
m.rights
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Delay SMS sending ANDROID

I'm currently trying to code an app to send mass SMS to 300+ numbers I have in my database. I'm facing issues with sending them all at one go my app will force close and I only managed to send like 27/308. I'm using a for loop to send my SMSes. Is…
Royston
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Detecting long presses in Android

I'm trying to detect a long press in Android. GestureDetector is deprecated, so I was trying to use Handlers. But handler isn't recognizing postDelayed or removeCallbacks. It Cannot resolve method for either. final Handler handler = new…
stumped
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Handler#removeCallbacksAndMessages not working properly

I created an h.postdelayed and I want to cancel that if a condition is true. I wrote the if condition and inside it I did h.removeCallbacksAndMessages(null). However, I can see the "timer" still running. Any help? h.postDelayed(new Runnable() { …
FreeLine
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postdelayed Handler doesn't repeat the runnable

I try to run this code to get the status of the user from my database. The process includes JSON, so I make a new class implements Runnable to act as background service. I did create a class extends Service. In that Service I call the thread. I use…
Dhani Himawan
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condition signal from handler postDelayed?

I'm very new to Android programming so pls excuse my ignorance... I'm trying to do simple Android app: User presses a button, starts postDelayed job and then waits on conditional var after timeout the postDelayer job should signal private final…
V0idd
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Service in an AlarmReceiver is not getting called in Android

In my app, this is how notifications should work: An AlarmReceiver gets triggered at a fixed time period in the day. This AlarmReceiver start a service. This service calls a post() method to delay the execution by 5 seconds. The code in this post()…
Sid
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Why charging state of the phone affects my app's behavior

I have a Runnable r that is triggered periodically once per minute by handler.postDelayed(60*1000). And I test my code on a real device. However I notice, when the phone is charging (AC or USB) , it works well, but if the phone is disconnected,…
Zhang Yifan
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How the method postDelayed(Runnable runnable, Long delayMilliSeconds) works exactly?

I want to know when the method postDelayed(...) is executed and there are many messages that are waiting in the message queue. In that case, when the runnable will be runned ? is it gonna be after the time defined in the method elapses ? or it will…
HiddenDroid
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How to add some delay after each iteration of array, each iterations changes view's property. Android

Lets say i have an array of char (mCharArray), and one textView (tvChar) that is the size of the whole screen. i want that, when the user clicks the screen (the tvChar), the textView shows each char inside the charArray, however it should have like…
Wellyanto the second
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