background-process

问题 I’m working on the iOS version of my phonegap-based navigation app. My app tracks the user’s location around a walk route using GPS and alerts the user using audio (navigator.notification.beep) and tactile (navigator.notification.vibrate) feedback when they reach a location at which there’s new instructions for them to follow. When my app is running in the foreground, both the audible beep and the vibration fire on reaching the geographic location but when the app is paused in the background,

问题 I am programming a shell for my CS class and part of the project involves running a process in the background if the '&' character is passed in by the user. If a process is run in the foreground, I simply execvp the process and it remains in control of the terminal since it is in the foreground. However, if it is a background process, I must return control to my main shell after starting the execution of the process. I understand that the system call tcsetpgrp(pid_t) places the process passed

问题 I want to update my local sqlite and firebase database every hour. But I can't use the broadcast receiver as it was ban in android o. I can't use Job scheduler and work manager as it is a timebase application. I don't want to foreground service because it will use lots of resources and required to show a notification that I can't show. 来源： https://stackoverflow.com/questions/57826280/i-want-to-update-my-sqlite-and-firebase-database-every-hour

问题 I need to pass the session to an asynchronous call via fsockopen in php. Can you help me pass the session to the new socket? SOLUTION: The following code works. start.php <?php session_start(); $_SESSION['var1'] = 'value1'; async_call('/async.php'); echo '<pre>'; print_r($_SESSION); echo $_COOKIE['PHPSESSID'] . "\r\n"; echo '<a href="verify.php">verify.php</a>'; function async_call($filepath) { $host = 'sandbox'; // set to your domain $sock = fsockopen($host, 80); fwrite($sock, "GET $filepath

问题 I am creating an app that checks for user locations every half an hour and updates the location of the user in the local database and then runs CRUD queries based on the user's location even when the app is not running. How do i do it ? I have referred to this http://techtej.blogspot.com.es/2011/03/android-thread-constructspart-4.html article and i am still confused about which is the correct approach for my result ? There are 4 options according to the article for what i intend to achieve

问题 I am creating an app that checks for user locations every half an hour and updates the location of the user in the local database and then runs CRUD queries based on the user's location even when the app is not running. How do i do it ? I have referred to this http://techtej.blogspot.com.es/2011/03/android-thread-constructspart-4.html article and i am still confused about which is the correct approach for my result ? There are 4 options according to the article for what i intend to achieve

问题 I need to code an iOS app that sends data to server every 30 minutes. Can this work when the app is in the background? How reliable it can be? 回答1: There is no way to perform tasks in the background permanently at the interval of time you are requesting. You may request specific permission via the developer connection but I must warn you that you will need a very compelling argument. I included the documentation below, maybe your request falls within one of the groupings that could run

问题 I want to run my timer in background even when app is not running. Because I want to get gps cordinate of the user after some time interval. What is the method to do this? 回答1: I don't think this is allowed in the iPhone programming paradigm. The operating system is capable of running background tasks but ordinary iPhone apps are not permitted to launch anything like this. 回答2: The Apple Push Notification service is not, in fact, only available to a few developers. It is currently in wide

问题 In my application i need to deploy a some kind of reminder. that every day at any fixed time my application generate a notification.. and it happens if my application is running or not. (e.g by using background service) I am able to generate notification, but im un able to create logic to generate it every day. Please help if any one understand what i want. Thanks in advance. 回答1: See below link and this is work for me. Create alarm set on a specified time, using AlarmManager Repeat alarm

问题 Developing a chrome extension using javascript is one of my university projects. I don't know how to establish a communication link between content script and background page using messaging. I need some help in this establishing the connection background.html chrome.tabs.getSelected(null, function(tab) { chrome.tabs.sendRequest(tab.id, {method: "getHTML"}, function(response) { console.log(response.data); }); }); content_script.js chrome.extension.onRequest.addListener(function(request,