timer

问题 I want to set this textview: <TextView android:id="@+id/timer" android:layout_width="100dp" android:layout_height="30dp" android:layout_above="@+id/directions"/> To be a timer. So the text should be a timer going like 0:30 then 0:29 ... for 30 seconds. Once timer is 0:00, I can call another method; I can print out "try again" and restart timer. 回答1: int time=30; TextView textTimer = (TextView)findViewById(R.id.timer); new CountDownTimer(30000, 1000) { public void onTick(long

问题 So I have this code function timer() { setTimeout(function(){alert("Out of time")}, 3000); //Alerts "Out of time" after 3000 milliseconds } function resetTime() { timer(); //this is not right, i thought it would override the first function but it just adds another timer as well which is not what I want } function stopTime() { //What could go here to stop the first function from fully executing before it hits 3000 milliseconds and displays the alert message? } the function timer() starts as

问题 $("#clickMe").click( function(){ if (i == 1) { i = i+1 $("#div p").css("left", "-" + width * i + "px"); } }); As you can see -margin changes when somebody clicks a button. What if I want it to happen just on site load every 10 seconds? Thanks. 回答1: Use setInterval to set up a timed event: setInterval( function(){ if (i == 1) { i = i+1 $("#div p").css("left", "-" + width * i + "px"); } }, 10000 /* 10000 ms = 10 sec */ ); 回答2: Using the setInterval function. 回答3: var cancel_margin_change =

问题 Just want the color of the letters to change with a little pauses (pause may vary as per the time given for a word and length of the word). The following code works fine for me.But I think I have created a mess with my logic.I can understand, but it should be easy for my team mates to understand. Code: import java.awt.Color; import java.lang.reflect.InvocationTargetException; import java.awt.Toolkit; import javax.swing.JPanel; import javax.swing.JTextPane; import javax.swing.SwingUtilities;

问题 I am using the ajax timer control inside an update panel. <asp:UpdatePanel ID="UpdatePanel1" runat="server"> <ContentTemplate> <asp:Timer ID="Timer1" runat="server" Interval="1000" OnTick="Timer1_Tick"></asp:Timer> <asp:Label ID="Label1" runat="server" Text=""></asp:Label> </ContentTemplate> </asp:UpdatePanel> The timer should update the label every second with the current datetime. protected void Timer1_Tick(object sender, EventArgs e) { Label1.Text = DateTime.Now.ToString(); } Everything

问题 I'm using Threading.Timer , like: new Timer(new TimerCallback(y=> { try { Save(Read(DateTime.Now)); // here i want to dispose this timer } catch { } }),null,100000,10000); How can I dispose this timer inside of a callback. or workaround? Update: Let me explain the situation. I want to try to call the method "Save", while it throws an exception. If it works, I need to stop the timer. 回答1: Try this: Timer timer = null; timer = new Timer(new TimerCallback(y => { try { Save(Read(DateTime.Now)); /

问题 I am working on a musical app with an arpeggio/sequencing feature that requires great timing accuracy. Currently, using `Timer' I have achieved an accuracy with an average jitter of ~5ms, but a max jitter of ~11ms, which is unacceptable for fast arpeggios of 8th, 16th notes & 32nd notes especially. I've read the 'CADisplayLink' is more accurate than 'Timer', but since it is limited to 1/60th of a second for it's accuracy (~16-17ms), it seems like it would be a less accurate approach than what

问题 I want to use a timer only once, at 1 second after the initialization of my main form. I thought the following would have a message box saying "Hello World" just once, but actually a new message box says "Hello World" every one second. Why so? I had put t.Stop() in the tick event. Also, do I need to dispose the timer somehow to avoid memory leakage? Timer t = new Timer(); t.Interval = 1000; t.Tick += delegate(System.Object o, System.EventArgs e) { MessageBox.Show("Hello World"); t.Stop(); };

问题 How can i pause the handler.postDelayed() timer using a button. So when i click the same button again the handler.postDelayed() timer should resume. handler.postDelayed(counterz, 60); 回答1: Handler does not have a timer to tweak. You are posting to event-queue of a thread, where a lot of other stuff is running as well. You can cancel posted Runnable 's: handler.removeCallbacks(counterz); And post again, to resume. 回答2: Handler does not have a pause method. You need to cancel and run again.

问题 I want Java Timer to call function n times after every t seconds. I am trying this right now it calls function after every t seconds but I want this function to be called for only n times. Timer tt = new Timer(); tt.schedule(new MyTimer(url), t); 回答1: I think Timer doesn't have it as a built-in function. You will need to add a counter to count it for each call and then stop the timer using cancel() after n times. Something like this: final int[] counter = {n}; final Timer tt = new Timer(); tt