CountDownTimer | countdown View | Icon library

The following code should start and stop the timer, however the "stop" button is not working. "Play" works fine. it just wont stop

I have a countdown timer class which can be paused/resumed until the timer hits zero. When the timer expires, a callback function (supplied in the class's constructor) should be invoked. The problem is that when I call this.timeout(), I get an error which says TypeError: this.timeout is not a function.

This is my CountdownTimer class.

I am trying to retrieve the location every 10 seconds. The problem is that the location sometimes is null, and sometimes gives back an old location. When I update the location in my emulator it is not updating live.

Code to get location:

I am making an app which reads the SMS from the phone and sends SMS from a particular sender to a server. I want to have to app run in background using Service but its not working. The app is crashing when I try to start the Service.

(If I play some music using Mediaplayer the Service works fine but I think there is some problem with the method calling when I try to run sendingData() when the Service starts)

Here are the relevant code :

MainActivity.java

How to call a javascript function like a "onload"?

I mean. I'm trying to call a CountDownTimer() function but I don't know how to do it. Can someone help me?

Ps. The javascript function is working fine.

At my view I'm trying this way:

Here i have a simple javascript which i want to making a simple CountDownTimer with cancel and restarting features, unfortunately after starting timer using setInterval that's return only 4 number in console and i can't fix that. without assuming this problem clearInterval not working to which i want to support cancel and restart again this time

I am going through an Android application that I wrote in 2014 and am replacing Dialogs with AlertDialogs

Previously, I had been using the following Dialog code to created a popup (from this popup) that would appear when "Purge Table" was selected, and would warn users of the results of their actions.

I wrote a foreground service to make sure my app can continue running when put into the background. The app needs to run in the background because after its timer elapses, it sounds a tone and vibrates to alert the user. However, when the Power or Home button is pressed, the app's timer stops running after about 15 minutes unless the phone is plugged into power. The phone was fully charged when I tested this.

Incidentally, I also set the app to NOT be optimized for battery life after reading on various sites that that would ensure that the app would continue running. From everything I read, I'm doing everything right, yet I still can't get this to work. I'm running Android 11 on a Pixel 2. I know that Google limited foreground processing for later versions of Android, but setting the app to not optimize for battery life is supposed to get around the problem, isn't it? To be safe, when the app starts, it asks the user to approve background operation:

I have an Alert controller which will takes minute input and show the countdown to the title of the controller and also highlighted the selected action.

How can I update the timer on the title, and make bold the selected Action. My Alert controller code is:-