background-thread

Magical Record - fetch in main thread block ui, in background return nil

余生颓废 提交于 2019-12-03 06:25:40
问题 I'm new to Magical Record, but already have seen a few questions on stackoverflow, and can't find an answer to my question. I have to find items with the predicate using this type of construction: NSArray *result = [MOSomeItems MR_findAllWithPredicate:predicate]; On the main thread result returns some value, but the UI is freezing. When using this construction, result returns nil value: dispatch_async(dispatch_get_global_queue( DISPATCH_QUEUE_PRIORITY_BACKGROUND, 0), ^{ NSArray *result =

android addView in background thread

佐手、 提交于 2019-12-03 03:34:21
I need to add lots of views in a loop, while this fragment does that, the app will also have a navigation drawer and action bar where the user can do things. so I would like this process to not a) slow down the app by blocking the user, b) preferably add the views in a background thread. The dilemma is that I think android doesn't like views to be added in a non-UI thread, so is there a best practice for this? I plan to have a progress bar view object visible in the fragment's view while the rest of the views are being generated with the addView and associated computations Romain Guy Instead

Cordova shows an warning as “ THREAD WARNING: [Your function] took [n] ms. ” in iOS

我的梦境 提交于 2019-12-03 02:24:30
"THREAD WARNING: ['Console'] took '81.661865' ms. Plugin should use a background thread." While running iOS Phonegap project. Similarly for some of the remaining plugins like geolocation and filesystem. As I am new to Phonegap ,can please anyone tell me how can I run the plugin on background thread. I have checked this also. Can we ignore this thread warning or is it related to memory issue in iOS Phone-gap thanks As per this . solved my warning issue I found warning can be ignored .But this can be solved by adding background thread using this loop:(In CDVLogger.m) [self.commandDelegate

Magical Record - fetch in main thread block ui, in background return nil

让人想犯罪 __ 提交于 2019-12-02 19:50:46
I'm new to Magical Record, but already have seen a few questions on stackoverflow, and can't find an answer to my question. I have to find items with the predicate using this type of construction: NSArray *result = [MOSomeItems MR_findAllWithPredicate:predicate]; On the main thread result returns some value, but the UI is freezing. When using this construction, result returns nil value: dispatch_async(dispatch_get_global_queue( DISPATCH_QUEUE_PRIORITY_BACKGROUND, 0), ^{ NSArray *result = [MOSomeItems MR_findAllWithPredicate:predicate]; }); What is the best practice for fetching data in

How to create custom icons for QFileSystemModel in a background thread

為{幸葍}努か 提交于 2019-11-30 05:32:05
问题 I am making a file browser in qt for some custom design-files. I want to load their preview as their thumbnail and for that reason I am using QIconProvider to return the Icon to my QFileSystemModel . The problem is that the algorithm that creates the QIcon needs some resources and as a result my application is not responsive until it finishes loading all the thumbnails. I am wondering if there is any way to put my QIconProvider in a background thread, so that I have my application responsive.

iOS4 Create Background Timer

我们两清 提交于 2019-11-27 21:44:18
I (Basically) need to create a background timer on iOS 4 that will allow me to execute some code when a specific amount of time has passed. I have read that you can accomplish this using some [NSThread detachNewThreadSelector: toTarget: withObject:]; but how does that work in practice? How can I ensure that the thread remains in the background also. Local notifications will NOT work for me, as I need to execute code, not notify the user. Help would be appreciated! Bruno Berisso You can use those call to execute a method (selector) of an object (toTarget) with some parameter (withObject) in a

Django Background Task

人走茶凉 提交于 2019-11-27 01:35:53
问题 I need to populate a SQLite database every few minutes in Django, but I want to serve stale data until the data is available for the database to be updated. (i.e. I don't want to block for the data to be gathered; the only time I can block is if there is a lock on the database, during which I have no choice.) I also don't want to install a separate program or library. How would I go about setting up another thread that could call save() on a bunch of models, without running into threading

How to run cordova plugins in the background?

一曲冷凌霜 提交于 2019-11-27 01:07:24
问题 Im making an application based on phonegap (cordova). I have tested it some times, and lately I saw a message in xcode that said "Plugin should use a background thread." So is it possible to make cordova plugins run in the background of the app? if so, please tell how. Thanks! 回答1: A background thread isn't the same that executing code while the app is in background, a background thread is used to don't block the UI while you execute a long task. Example of background thread on iOS - (void

iOS4 Create Background Timer

做~自己de王妃 提交于 2019-11-26 20:47:10
问题 I (Basically) need to create a background timer on iOS 4 that will allow me to execute some code when a specific amount of time has passed. I have read that you can accomplish this using some [NSThread detachNewThreadSelector: toTarget: withObject:]; but how does that work in practice? How can I ensure that the thread remains in the background also. Local notifications will NOT work for me, as I need to execute code, not notify the user. Help would be appreciated! 回答1: You can use those call

How to always run a service in the background?

我的未来我决定 提交于 2019-11-26 15:41:32
I am in the process of creating an app that is similar to the built-in SMS app. What I need: a service that is always running in the background every 5 min. the service checks the current location of the device and calls a web service if certain criteria are met, the service should generate a notification (just like the SMS app) when the notification is clicked, the user is taken to the app (just like the SMS app) when the app is installed the service should be started when the device is rebooted, the service should be started What I have tried: - running a regular service which worked just