我创建了一个名为HelloService的新类.我将其添加到Android manifest.xml中.
public class HelloService extends Service {
private Timer timer = new Timer();
private long INTERVAL = 5000;
public void onCreate() {
super.onCreate();
startservice();
}
private void startservice() {
timer.scheduleAtFixedRate( new TimerTask() {
public void run() {
Log.d("servy", "This proves that my service works.");
}
}, 0, INTERVAL);
; }
private void stopservice() {
if (timer != null){
timer.cancel();
}
}
@Override
public IBinder onBind(Intent arg0) {
return null;
}
}
Run Code Online (Sandbox Code Playgroud)
我的其他活动称之为:
Intent helloservice = new Intent(this, HelloService.class);
startService(helloservice); …Run Code Online (Sandbox Code Playgroud) 如何将参数传递给ElapsedEventHandler调用的函数?
我的代码:
private static void InitTimer(int Index)
{
keepAlive[Index] = new Timer();
keepAlive[Index].Interval = 3000;
keepAlive[Index].Elapsed += new ElapsedEventHandler(keepAlive_Elapsed[, Index]);
keepAlive[Index].Start();
}
public static void keepAlive_Elapsed(object sender, EventArgs e[, int Index])
{
PacketWriter writer = new PacketWriter();
writer.AppendString("KEEPALIVE|.\\");
ServerSocket.Send(writer.getWorkspace(), Index);
ServerSocket.DisconnectSocket(Index);
}
Run Code Online (Sandbox Code Playgroud)
我想做的是在括号([和])之间.但只是这样做显然不起作用......
我有一个带有Timer控件的asp页面.定时器控制将触发一些执行方法.
加载此页面时,会出现以下错误并且未触发计时器控制以进行勾选.
我用的是IE9.FF和chrome没有问题.
错误详细信息如下.有人有这个消息的经验吗?
网页错误详情
User Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.1; WOW64; Trident/5.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; InfoPath.2; .NET4.0C; .NET4.0E)
Timestamp: Thu, 12 May 2011 12:35:10 UTC
Message: Not enough storage is available to complete this operation.
Line: 6
Char: 70575
Code: 0
URI: http://localhost/AbcWeb/Telerik.Web.UI.WebResource.axd?_TSM_HiddenField_=ctl00_RadScriptManager1_TSM&compress=1&_TSM_CombinedScripts_=%3b%3bSystem.Web.Extensions%2c+Version%3d4.0.0.0%2c+Culture%3dneutral%2c+PublicKeyToken%3d31bf3856ad364e35%3aen%3a1f68db6e-ab92-4c56-8744-13e09bf43565%3aea597d4b%3ab25378d2%3bTelerik.Web.UI%3aen%3a183fb741-216d-4765-9b46-4a1f5d38fdd7%3a16e4e7cd%3af7645509%3aed16cbdc%3bSystem.Web.Extensions%2c+Version%3d4.0.0.0%2c+Culture%3dneutral%2c+PublicKeyToken%3d31bf3856ad364e35%3aen%3a1f68db6e-ab92-4c56-8744-13e09bf43565%3a76254418%3bTelerik.Web.UI%2c+Version%3d2010.2.929.40%2c+Culture%3dneutral%2c+PublicKeyToken%3d121fae78165ba3d4%3aen%3a183fb741-216d-4765-9b46-4a1f5d38fdd7%3a874f8ea2%3a24ee1bba%3a19620875%3a490a9d4e%3abd8f85e4%3a9cdfc6e7
Run Code Online (Sandbox Code Playgroud)
当我调试js.将css添加到文档时会出现上述错误(document.createStyleSheet(hrefs [i])).
这会是一个记忆问题吗?
(function() {
function loadHandler() {
var hrefs = ['/WmsWeb/Telerik.Web.UI.WebResource.axd?compress=1&_TSM_CombinedScripts_=%3b%3bTelerik.Web.UI%2c+Version%3d2010.2.929.40%2c+Culture%3dneutral%2c+PublicKeyToken%3d121fae78165ba3d4%3aen%3a183fb741-216d-4765-9b46-4a1f5d38fdd7%3a1c2121e' ];
var head = document.getElementsByTagName('head')[0];
for (var i = 0; …Run Code Online (Sandbox Code Playgroud) 我需要计算用C#编写的代码序列的执行时间.使用DateTime.Now我得到的毫秒字段值不正确.例如:
int start_time, elapsed_time;
start_time = DateTime.Now.Millisecond;
for(int i = 0; i < N_ITER; i++) {
// cpu intensive sequence
}
elapsed_time = DateTime.Now.Millisecond - start_time;
Run Code Online (Sandbox Code Playgroud)
elapsed_time给出负值.
我如何替换DateTime以获得经过时间的实际值?
我正在尝试使用'parse'将timespan变量转换为整数变量.我收到一条错误消息:
格式异常未处理:输入字符串格式不正确
这是代码有:
private void dateTimePicker4_ValueChanged(object sender, EventArgs e)
{
TimeSpan t = dateTimePicker4.Value.ToLocalTime() - dateTimePicker3.Value.ToLocalTime();
int x = int.Parse(t.ToString());
y = x;
}
Run Code Online (Sandbox Code Playgroud)
我的目标是在文本框中动态显示两个时间戳的时间变化,即它们之间的分钟差应自动显示在文本框中.
我想编写一些应用程序,让一些事情按计划进行。
每隔几分钟轮询一次 URL 进行更新似乎是一个相当常见的用例。不过,在这种特殊情况下,我只是想实现一个时钟。
这有效:
@Composable
fun App() {
var ticks by remember { mutableStateOf(0) }
// Not 100% happy about this unused variable either
val timer = remember {
Timer().apply {
val task = object : TimerTask() {
override fun run() {
ticks++
}
}
scheduleAtFixedRate(task, 1000L, 1000L)
}
}
MaterialTheme {
Text(
// A real application would format this number properly,
// but that's a different question
text = "$ticks"
)
}
}
Run Code Online (Sandbox Code Playgroud)
但我必须导入java.util.Timer,所以它不会是可移植的。
Jetpack Compose …
timer kotlin android-jetpack-compose compose-desktop compose-multiplatform
我想在用C#编写的简单.NET应用程序中使用计时器.我能找到的唯一一个是Windows.Forms.Timer类.我不想仅为我的控制台应用程序引用此命名空间.
是否有一个C#计时器(或类似计时器)类用于控制台应用程序?
我需要一个可以使用毫秒的计时器.我尝试sleep 0.1在脚本中使用命令我看到错误消息:
syntax error: invalid arithmetic operator (error token is ".1")
当我sleep 0.1在终端运行它工作正常.
请帮我!
编辑:对不起,我犯了一个错误:
function timer
{
while [[ 0 -ne $SECS ]]; do
echo "$SECS.."
sleep 0.1
SECS=$[$SECS-0.1]
done
}
Run Code Online (Sandbox Code Playgroud)
排sleep 0.1在第5位,排SECS=$[$SECS-0.1]在第6位.我只是乱码.问题出在第6行,因为bash无法使用浮点数.我改变了我的功能如下:
MS=1000
function timer
{
while [[ 0 -ne $MS ]]; do
echo "$SECS.."
sleep 0.1
MS=$[$MS-100]
done
}
Run Code Online (Sandbox Code Playgroud) 我正在尝试创建一个计时器,在用户设置的时间触发本地通知.我遇到的问题是,我无法找到一种方法,可以设置本地通知在7:00 PM时关闭.研究此问题时发现的几乎所有方法都涉及从当前日期起一定时间内发出的本地通知.我试图允许用户选择晚上7点,然后在那时关闭通知.从逻辑上讲,这可以通过最终时间(用户选择的值)来实现 - 当前时间可以给你时差.但我不完全确定如何做到这一点.
非常感谢您对该主题的任何帮助,谢谢.以下是我目前用于触发本地通知的代码.
let center = UNUserNotificationCenter.current()
content.title = storedMessage
content.body = "Drag down to reset or disable alarm"
content.categoryIdentifier = "alarm"
content.userInfo = ["customData": "fizzbuzz"]
content.sound = UNNotificationSound.init(named: "1.mp3")
content.badge = 1
let trigger = UNTimeIntervalNotificationTrigger(timeInterval: timeAmount, repeats: false)
let request = UNNotificationRequest(identifier: "requestAlarm", content: content, trigger: trigger)
center.add(request)
center.delegate = self
Run Code Online (Sandbox Code Playgroud) 如何将传递的值放入构造中,使计时器四舍五入到小数点后一位并显示在RaisedButton的子文本中?我已经尝试过但没有运气。我设法使用一个简单的Timer来使回调函数起作用,但没有周期性,并且文本中没有实时更新值...
import 'package:flutter/material.dart';
import 'dart:ui';
import 'dart:async';
class TimerButton extends StatefulWidget {
final Duration timerTastoPremuto;
TimerButton(this.timerTastoPremuto);
@override
_TimerButtonState createState() => _TimerButtonState();
}
class _TimerButtonState extends State<TimerButton> {
@override
Widget build(BuildContext context) {
return Container(
margin: EdgeInsets.all(5.0),
height: 135.0,
width: 135.0,
child: new RaisedButton(
elevation: 100.0,
color: Colors.white.withOpacity(.8),
highlightElevation: 0.0,
onPressed: () {
int _start = widget.timerTastoPremuto.inMilliseconds;
const oneDecimal = const Duration(milliseconds: 100);
Timer _timer = new Timer.periodic(
oneDecimal,
(Timer timer) =>
setState(() {
if (_start < 100) {
_timer.cancel();
} …Run Code Online (Sandbox Code Playgroud)