timertask

问题 I have made a Timer Application in android.In application there are three (uneditable) EditText and a Button .When i press Button first time the timer in 1st EditText will start ,when i press it 2nd time the timer in 1st EditText will stop and at the same time the timer in 2nd EditText will be start,when i again press button same thing will be happened with 3rd EdtiText .NOw this code is working properly but when i press back button and again start it,its stopped working in 3rd EditText .The

问题 I m facing issue in fitness app after 1 hr timertask runs slow or sometimes it runs too fast like it increase 2 second simantaneously please someone suggest stable solution ..I am saving user history when ever I get new location any help is appreciated public void reStartTimerTask(final boolean onCreate) { if (Validator.isNull(timer)) { if (preferences.isGps()) { IntentFilter intentFilter = new IntentFilter(Util.LOCAL_RECEIVER); intentFilter.addCategory(Intent.CATEGORY_DEFAULT);

问题 Hey guys I'm trying to develop a little slide show in android. I've implemented the timer with a timertask and as expected the "run"-method is called everytime after the delay. But, however, when the delaytime has passed, the run method is called twice, so that the slide show slides two pictures instead of one. Can anyone help me to solve this problem? Heres some code for better understandig what i've done. public void startTimer() { if(timer == null) { timer = new Timer(); } timer

问题 Java. I have two threads. one will be continuously monitoring for some events and based on the events, it will be updating (addition or deletion) a file. the other thread which is a timer task event, will be updating the same file in regular intervals of time. I want the threads to update the file when the other thread is not accessing the file . I couldn't use locks as file updating code part is independent for each thread and in different java classes . how can i do so? thanks in advance.

问题 I am using Timer to check a condition periodically and want to remove background if found true condition. But it is giving me an error. android.view.ViewRootImpl$CalledFromWrongThreadException: Only the original thread that created a view hierarchy can touch its views. My code is : t.schedule(new TimerTask(){ @Override public void run() { if(!active){ fl.setBackgroundResource(android.R.color.transparent);// this line causing error ! } }}, 500,500); 回答1: Hi you can use at least two methods to

问题 I am a begineer in android app development, i have stoptimertask function in my mainactivity, and a button stop in another activity. What i want to do is when i press this stop button from my 2nd activity(which is maps.class), i want the stoptimertask to stop i.e. stop the tasks. However the app crashes. Here is my code of mainactivity.java public class MainActivity extends FragmentActivity{ protected static final int CONTACT_PICKER_RESULT = 0; int count=0; Timer timer; TimerTask timerTask;

问题 In my main class: public class Main{ public static void main(String[] args) { //some code final int number = 0; numberLabel.setText(number); Timer t = new Timer(); t.scheduleAtFixedRate(new TimerTask(){ public void run(){ //elapsed time number = number + 1; } }, 1000, 1000); } } I am using the final int variable number to display into a label numberLabel the elapsed time. But i cannot access the final int variable inside the timer, error says: "The final local variable numbers cannot be

问题 I am trying to schedule a timer using the timertask. I want to freeze the UI when the task is running using the ProgressDialog. I am using AsyncTask with TimerTask to achieve the desired results. But when I add Progress Dialog code to TimerTask Runnable, it throws Runtime Exception. Below is the code for TimerTask, Any help would be appreciated. Thanks in advance. public class MyTimerTask extends TimerTask { Context contxt; public MyTimerTask(Context cn){ contxt=cn; } public void run() { try

问题 TimerTask runs one more time after I call timer.cancel() method. I don't need TimerMethod to be executed after I call stopBusTimer() method. Can somebody explain why is it happening? busTimer = new Timer(); busTimer.schedule(new TimerTask() { @Override public void run() { TimerMethod(mSelectedRoute); } }, 0, Consts.BUS_TIMER_INTERVAL); private void stopBusTimer() { if (busTimer != null) { busTimer.cancel(); busTimer.purge(); busTimer = null; Log.v(LOG_TAG, "stop BusTimer"); } } 回答1: The

问题 How to implement timer into Automatically image slide inside the fragment? I used Fragment and CustomSwipeAdapter and I dont know where to put the timer to make the images automatically slide. Is it inside the Fragment or in CustomSwipe Adpater? This is for the Fragment: public class PrimaryFragment extends Fragment { public static ViewPager viewPager1; CustomSwipeAdapter adapter; public PrimaryFragment() { // Required empty public constructor } private String[] health ={"Abdominal Disorder",