I want to create 10 ImageViews with a delay of 5 seconds between, I created this code:
new Timer().scheduleAtFixedRate(new TimerTask() {
#Override
public void run() {
if (counter <= 10)
newimg();
else
// here I want to stop the timer so it will not try to create any more `ImageViews` (the array contains only 10).
}
}, 0, 5000);
private void newimg() {
ball[counter] = new ImageView(this);
ball[counter].setTag(counter);
ball[counter].setBackgroundResource(R.mipmap.ball);
int randomx = rand.nextInt(layoutwidth);
int randomy = rand.nextInt(layoutheight);
ball[counter].setX(randomx);
ball[counter].setY(randomy);
rlt.addView(ball[counter]);
counter++;
}
How can I stop the timer inside the else statement?
Call Timer cancel to stop the timer.
Call cancel() on timer
My Solutions is :
Handler handler = new Handler();
handler.postDelayed(createImageView, 5000);
Runnable createImageView=new Runnable() {
#Override
public void run() {
if (counter <= 10){
handler.postDelayed(this,5000);
newimg();
}
}
};
Related
I want to use CountDownTimer within a for loop but when I am using following code then CountDownTimer is running only once while I want to run it CountDownTimer as per given condition in for loop. it might be a silly question but I will be very thankful to you if I get some help. Thanks in Advance
for (int i=1;i<=10;i++){
Random random = new Random();
totalques.setText(String.valueOf(i) + "/10");
firstnum.setText(String.valueOf(random.nextInt(100)));
secondnum.setText(String.valueOf(random.nextInt(50)));
new CountDownTimer(5000, 1000) {
#Override
public void onTick(long millisUntilFinished) {
time.setText(String.valueOf(millisUntilFinished / 1000)
+"s");
}
#Override
public void onFinish() {
}
}.start();
}
You can use the Timer class for doing your job
final Handler handler = new Handler();
Timer timer = new Timer();
TimerTask timerTask = new TimerTask() {
#Override
public void run() {
handler.post(new Runnable() {
public void run() {
//one second elapsed
}
});
}
};
timer.schedule(timerTask, 0, 1000);
The schedule method say start directly and I want to be notified when every 1000 milliseconds elapse.
Don't forget to cancel the timer when you want to stop it with timer.cancel()
Inside the run you can decrement an int and when it reach 0 you can stop the timer
I want to show custom dialogs in order. Each dialog must shown for 5 second then it must be dismissed and the other one must be shown. I use for loop and my code looks like:
for(int i = 0 ; i < 10 ; i++){
popupView.show();
SystemClock.sleep(3000);
popupView.dismiss();
SystemClock.sleep(1000);
}
Try this code and adjust the time interval as your need.
showDialogs();
final Handler handler = new Handler();
Timer timer = new Timer();
TimerTask doShowDialog = new TimerTask() {
#Override
public void run() {
handler.post(new Runnable() {
public void run() {
alertDialog.dismiss();
if (mDialogCounter < 5) {
showDialogs();
mDialogCounter++;
}
}
});
}
};
timer.schedule(doShowDialog, 5000, 5000);
I made a Timer and I want to stop it when it reaches to 60 seconds(1 min).
here's the code:
Timer t = new Timer();
t.scheduleAtFixedRate(new TimerTask() {
public void run() {
runOnUiThread(new Runnable() {
public void run() {
myTextView.setText("timer=" + String.valueOf(TimeCounter));
TimeCounter++;
}
});
}
}, 0, 1000);
int I=60;
if (TimeCounter == I) {
-------------- stop the timer here ----------------
}
}
how can I do it?
you will probably need to move the stopping condition inside your task... so it looks more less like this:
final Timer t = new Timer();
t.scheduleAtFixedRate(new TimerTask() {
public void run() {
runOnUiThread(new Runnable() {
public void run() {
if (TimeCounter == I) {
t.cancel();
return;
}
myTextView.setText("timer=" + String.valueOf(TimeCounter));
TimeCounter++;
}
});
}
}, 0, 1000);
Remember to define earlier:
int I=60;
Also, you would probably need to mark Timer as final (just as I did in code).
try below code to stop timer :-
if (TimeCounter == I) {
t.cancel();
}
also see below link:-
How to stop immediately the task scheduled in Java.util.Timer class
You can use CountDownTimer, maybe this is a simpler solution:
int Time = 0;
public class OneMinuteCountDownTimer extends CountDownTimer {
public OneMinuteCountDownTimer (long startTime, long interval) {
super(startTime, interval);
}
#Override
public void onFinish() {
myTextView.setText("timer="+Time+" time finished");
Time=0;
}
#Override
public void onTick(long millisUntilFinished) {
Time++;
myTextView.setText("timer="+Time);
}
}
}
Make the CountDownTimer global and call it when You want to start the CountDownTimer:
private OneMinuteCountDownTimer countDownTimer;
private final long startTime = 60 * 1000;
private final long interval = 1 * 1000;
inside onCreate (EDIT):
countDownTimer = new OneMinuteCountDownTimer(startTime,interval);
countDownTimer.start();
and cancel it, if You want to cancel it before one minute:
countDownTimer.cancel();
I have an image view. So in the image view i want to change the images after a certain time period. Images are coming from an array list. Now when the no of images are 3 or more than 3, it is working perfect. But when it is 2, my logic is not working. Second image is visible for a moment and then again changed to first image here is my code:
r = new Runnable(){
int i = 0;
public void run(){
iv.setImageBitmap(alBmps.get(i));
i++;
if(i >= alBmps.size()){
i = 0;
}
iv.postDelayed(r, 5000); //set to go off again in 5 seconds.
}
};
iv.postDelayed(r, 1000);
Can any one help me what changes i need on the above code?
Thanks.
Try this
declare variables
static int i=0;
private Timer myTimer;
in your onCreate or on button click where you want to call and start the methods
myTimer = new Timer();
myTimer.schedule(new TimerTask()
{
#Override
public void run()
{
TimerMethod();
}
}, 500, 5000);
add these methods to your class
private void TimerMethod()
{
this.runOnUiThread(Timer_Tick);
}
private Runnable Timer_Tick = new Runnable()
{
public void run()
{
if(i<alBmps.size())
{
iv.setImageBitmap(alBmps.get(i));
}
else
{
i=0;
iv.setImageBitmap(alBmps.get(i));
}
i++;
}
};
I am using an ImageSwitcher with a TouchListener to change images from an array. Its working fine but i want it to switch images every x seconds or so, so that I can add imageSwitcher.setImageResource(imageList[curIndex]); to it.
Any suggestions?
Try this,
imageSwitcher.postDelayed(new Runnable() {
int i = 0;
public void run() {
imageSwitcher.setImageResource(
i++ % 2 == 0 ?
R.drawable.image1 :
R.drawable.mage2);
imageSwitcher.postDelayed(this, 1000);
}
}, 1000);
I think it is possible via TimerTask and Timer. please Try this code. I think It help you.
private Handler mHandler;
private Runnable mUpdateResults;
private Timer timerAnimate;
private TimerTask timerTask;
mHandler = new Handler();
mUpdateResults = new Runnable() {
public void run() {
AnimateandSlideShow();
}
};
int delay = 0;
int period = 15000;
timerAnimate = new Timer();
timerTask = new TimerTask() {
public void run() {
mHandler.post(mUpdateResults);
}
};
timerAnimate.scheduleAtFixedRate(timerTask, delay, period);
Public void AnimateandSlideShow()
{
imageSwitcher.setImageResource(imageList[curIndex]);
///Here You need To handle curIndex position.
}