handler

How make a button pressed when corresponding key on a keyboard is pressed? JavaFX

由 跟風遠走 提交于 2019-12-13 04:35:42
问题 For example, I created a button labeled "1". Whenever this button is pressed, 1 is appended to a textField. However, I can add 1 to a textField simply by typing 1 on my keyboard. When doing so, I'd like by button to get view as if it was pressed instead if a key. I've been thinking thant may be it's possible to manage this issue in this way: rootNode.setOnKeyTyped(new EventHandler<KeyEvent>() { @Override public void handle(KeyEvent event) { textField.appendText(event.getCharacter()); if(event

exceptionCaught error handling write back response causes exception and infiniteLoop of calling exceptionCaught

由 ≡放荡痞女 提交于 2019-12-13 02:30:34
问题 I'm trying to genericize my error handling for HTTP requests, and always respond with an actual error HTTP code and relevant message. Here is my issue: in my Handler which extends SimpleChannelUpstreamHandler, exceptionCaught is fired when an exception is thrown anywhere in the stack. That's good. The bad part is that when I try to write out a response to the client with an appropriate HTTP code and response, the write causes an exception, and then the program goes into an infinite loop with

C#: Can't debug ASHX handler

由 僤鯓⒐⒋嵵緔 提交于 2019-12-13 01:44:52
问题 I have an ASP.net C# 4.0 website project. I am calling an ASHX handler using a jQuery AJAX postback. Normally when I debug C#, I use this method Debug > Attach to Process > select w3wp.exe and start debugging. When I do this with my ASHX handler Visual Studio says "The breakpoint will not be hit. No symbols have been loaded for this document." Sure enough, when I run the AJAX call to the handler, the breakpoint is not hit. What confuses me is that I can debug C# files otherwise, i.e. the code

got error when try to download pdf file

由 ￣綄美尐妖づ 提交于 2019-12-13 01:30:01
问题 In my application i'm trying to download PDF file from server and storing it in SD card, but when i try to download, the download always failed and the logcat says no handler found. i need help to solve this problem, please help me. thank you downloadText.java package mobile.download; import java.io.*; import java.net.*; import java.util.regex.Pattern; import mobile.config.Kondownload; import com.karismaelearning.R; import android.app.Activity; import android.os.Bundle; import android.os

python 封装自己的log日志系统

由 徘徊边缘 提交于 2019-12-13 01:15:06
封装记录log日志，多模块使用 # coding=utf-8 import logging import time import os log_path = './log' class Log: def __init__(self): self.now = time.strftime("%Y-%m-%d--%H-%M-%S") self.logname = os.path.join(log_path, '{0}.log'.format(self.now)) def __printconsole(self, level, message): # 创建一个logger logger = logging.getLogger() logger.setLevel(logging.DEBUG) # 创建一个handler，用于写入日志文件 fh = logging.FileHandler(self.logname, 'a', encoding='utf-8') fh.setLevel(logging.DEBUG) # 再创建一个handler，用于输出到控制台 ch = logging.StreamHandler() ch.setLevel(logging.DEBUG) # 定义handler的输出格式 formatter = logging.Formatter('%(asctime)s -

Worker Thread to Worker Thread Communication

由 人盡茶涼 提交于 2019-12-12 20:09:27
问题 Java/Android - I am unable to find any Worker Thread to Worker Thread communication examples. The examples always involve the UiThread. I have a HandlerThread that gets fed work and the HandlerThread spreads the work onto multiple worker threads. I want the multiple worker threads to communicate back to the HandlerThread. All I have been able to do is have the worker threads communicate with the UiThread via Handler. Thanks! 回答1: public class ModelFragment extends Fragment implements Handler

Cannot make a static reference to the non-static method sendEmptyMessage(int) from the type Handler

由 拥有回忆 提交于 2019-12-12 18:13:46
问题 I have an error "Cannot make a static reference to the non-static method sendEmptyMessage(int) from the type Handler" How to fix it? As I think this is a problem that this class where I do this is not an activity? new Thread() { public void run() { try { List<Sail> sails = searchSails(); selectSailIntent.putParcelableArrayListExtra( Constant.SAILS, new ArrayList<Sail>(sails)); getContext().startActivity(selectSailIntent); Handler.sendEmptyMessage(0); } catch (Exception e) { alertDialog

How to add code to the standard signal handler?

由 核能气质少年 提交于 2019-12-12 13:18:27
问题 I have a C application running on Linux where I need to add some code to the standard signal handler. The idea was to setup my handler saving the pointer to the standard one and call the saved handler from my code. Unfortunately, neither signal() nor sigaction() return pointer to the standard handler. Both of them return NULL instead. Is there any way of doing custom handling and continuing with the standard handling without removal of the custom handler and sending the same signal again? 回答1

Checking if the handler != null vs Checking if the event != null in C# [duplicate]

由 北慕城南 提交于 2019-12-12 12:40:52
问题 This question already has answers here : C# Events and Thread Safety (15 answers) Closed 6 years ago . I have seen various coding styles to fire events in C#. The first style consisting of the following: -an event handler public delegate void NumberReachedEventHandler(object sender, NumberReachedEventArgs e); -an event public event NumberReachedEventHandler NumberReached; -and the method to fire the event protected virtual void OnNumberReached(NumberReachedEventArgs e) { if(NumberReached !=

How to redirect user to another Url from MVC Custom Router Handler?

由 孤者浪人 提交于 2019-12-12 11:33:39
问题 I am working with CustomMvcRouterHandler, Based on some logic I just want to redirect user to another Url from CustomHandler. public class CustomMvcRouterHandler : IRouteHandler { public IHttpHandler GetHttpHandler(RequestContext requestContext) { if (requestContext.HttpContext.Request.IsAuthenticated) { if (logic is true) { string OrginalUrl = "/Home/AboutUs"; // redirect Url = "/Home/CompanyProfile"; return new MvcHandler(requestContext); } } return new MvcHandler(requestContext); } } How
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