Develop Reference

Waiting for a countdowntimer to finish

I need help with writing a code,
How do I make a code to wait until the countdown timer is finished?
I tried with boolean says if countdown timer is running and in the code, it was like this:
---part 1 of code---
While(running){}
---part2 of the code---
It makes the screen freeze... Idk how to solve this.. help someone?

CountDownTimer already has that, You just need to put the codes that you want to make them work after the timer finished, inside the onFinish(), like below
countDownTimer = new CountDownTimer(10000, 1000) {
#Override
public void onTick(long l) {
}
#Override
public void onFinish() {
//this part will work after timer have finished
}
}.start();

CountDownTimer strange Finish behaviour

When Timer Finish it goes back to previous Activity for a Second then Apply onFinish
What is the reason and how to prevent that.
mCountDownTimer = new CountDownTimer(mTimeLeftInMillis, 1000) {
#Override
public void onTick(long millisUntilFinished) {
mTimeLeftInMillis = millisUntilFinished;
updateCountDownText();
}
#Override
public void onFinish() {
playAgain();
}
}.start();

The Reseaon is at the start of every tick, before onTick() is called, the remaining time until the end of the countdown is calculated and If this time is smaller than the countdown time interval, onTick() would not not called anymore.
When onTick() called CountDownTimer consume some time for calculation. the easiest way to handle this is to add some extra timeLeftInMillis to your timer!

Logout after a specific time of inactivity

I want to logout users after they have been inactive for 3 minutes on my app i.e doing nothing for 3 minutes. I have only one Activity and it contains multiple Fragments. How can I achieve this? I tried the answers posted on the same topic but nothing worked. Please can anyone be specific?

Each Activity has an onUserInteraction() function. You can override it and reset a Runnable. If there is no user interaction the Runnable will be called after 3 minutes. Don't forget to remove Runnable onDestory().
Runnable r = new Runnable() {
#Override
public void run() {
// handle timeout
}
};
Handler handler = new Handler();
#Override
public void onUserInteraction() {
super.onUserInteraction();
handler.removeCallbacks(r);
handler.postDelayed(r, 3 * 60 * 1000 );
}
#Override
protected void onDestroy() {
super.onDestroy();
handler.removeCallbacks(r);
}

Try this
Use CountDownTimer
CountDownTimer timer = new CountDownTimer(15 *60 * 1000, 1000) {
public void onTick(long millisUntilFinished) {
//Some code
}
public void onFinish() {
//Logout
}
};
When user has stopped any action use timer.start() and when user does the action do timer.cancel()

use alarm manager and set alarm for logout

You have two options.
Use an alarm manager and have a broadcast receiver upon receiving the alarm and log out from there. When the user does some activity, restart the alarm. example.
have a Service that you can talk to, and send intents restartTimer. When the timer reaches zero, log out the user.

android COuntDownTimer stop and start new one

the program that i am making includes two different count down.
first, user has to type in the password within the time limit and press a button. If user can't input the password before the time limit, then it is over. However, if the user was able to input the password correctly before the time limit, a new timer should start.
public class MalibuCountDownTimer extends CountDownTimer
{
public MalibuCountDownTimer(long startTime, long interval)
{
super(startTime, interval);
}
#Override
public void onFinish()
{
if(hasPlanted == false) {
text.setText("Time's up!");
mTextView.setText("cya");
btnEnable(false);
startB.setEnabled(false);
}
}
#Override
public void onTick(long millisUntilFinished)
{
text.setText(""+String.format("%02d:%02d:%03d",
TimeUnit.MILLISECONDS.toMinutes(millisUntilFinished) - TimeUnit.HOURS.toMinutes(TimeUnit.MILLISECONDS.toHours(millisUntilFinished)),
TimeUnit.MILLISECONDS.toSeconds(millisUntilFinished) - TimeUnit.MINUTES.toSeconds(TimeUnit.MILLISECONDS.toMinutes(millisUntilFinished)),
TimeUnit.MILLISECONDS.toMillis(millisUntilFinished) - TimeUnit.SECONDS.toMillis(TimeUnit.MILLISECONDS.toSeconds(millisUntilFinished))
));
}
}
this is the first timer, and it is working just fine. However, i am having trouble trying to stop this timer when user entered the correct password.
I have created another class of CountDownTimer, and when the user input the correct password within the time limit, the second timer starts. I put a boolean to stop the first timer to do anything when it ends, but I have no idea how I can fully stop that counter.

if(myTimer != null) {
myTimer.cancel();
myTimer = null;
}
This is in order to cancel the timer early. First check if it is null, and if it isn't, apply the cancel method on it. Let me know if this was helpful.
:)

First you have to create service and call that service in main class where timer is running and call the onReceive method
BroadcastReceiver br = new BroadcastReceiver() {
#Override
public void onReceive(Context context, Intent intent) {
//Here you check the timer is running or not
timer.cancel();
}
};

onPause, onStop, onDestroy not stopping timer

In my onCreate method in my activity i call a method from an object and pass the methods value as 1 which means to start a timer in the objects class. However I want to stop the timer whenever the app closes, loses focus or someone pressed the back button on their device and exited the app. I tried doing this below my onCreate method with an onPause, onStop, onDestroy and entered the methods value as 2 for the object which means to cancel the timer. However my problem is that whenever someone presses the back button on their device and then goes back in to the app the same timer is running twice because the app did not cancel the timer in the onStop, onPause or onDestroy. Why didn't the onStop, onPause and onDestroy stop the timer and how do i make it stop the timer so two arent running when the app is reopened?
Activity below
Ship mShip = new Ship(0,0,0);
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_my);
mShip.timerStart(1);
}
#Override
public void onPause()
{
super.onPause();
mShip.timerStart(2);
}
#Override
public void onStop()
{
super.onStop();
mShip.timerStart(2);
}
#Override
public void onDestroy()
{
super.onDestroy();
mShip.timerStart(2);
}
Ship Class below
public static int counter = 0;
public static int counterPerSec = 5;
TimerClass startTimer = (TimerClass) new TimerClass(2000,1000)
{
#Override
public void onFinish() {
counter += counterPerSec;
this.start();
}
};
public void timerStart(int x) {
if(x == 1)
{
startTimer.start();
}
if(x == 2)
{
startTimer.cancel();
}
}
Timer Class
public class TimerClass extends CountDownTimer {
public TimerClass(long millisInFuture, long countDownInterval) {
super(millisInFuture, countDownInterval);
}
#Override // when timer is finished
public void onFinish() {
this.start();
}
#Override // on every tick of the timer
public void onTick(long millisUntilFinished) {
}
}

I can not see, why your timer is not canceled. But there is another bug in your code: You can not pause and resume a countdown timer by calling resume and start.
If your time gets canceled, you should save the old timer vaules. And if your timer has to be resumed, you can create a new timer with the old timer values. See: Android: How to pause and resume a Count Down Timer?
To your question: Can you debug and check if onPause, onStop, onDestroy is called? Is there any exception thrown? Do you have any compile warnings?
Last important question: How do you know that two timers are running?

Well, I think I can correctly assume that onPause, onStop, and onDestroy are executing, so I would venture to guess that there is a bug in your TimerClass class.