Programmer Group

Because iOS system is a "pseudo background" mode of operation, when the HOME key is pressed, if the program does not do any operation, the application will have 5 seconds of execution buffer time, the random program will be suspended, all task terminals, including timers and location updates, etc., but when the program opens the backg ...

Django is python's web framework, which can be used to build websites or as a backstage for web applications. Usually Django is started from the command line. Using DJango in ios needs to start from the program through code. In addition, DJango needs a certain time to start. After starting, it needs to notify the interface thread. 1. Install D ...

I. principle After decompressing an Android application package as a zip file package, it is found that adding an empty file to the META-INF directory does not require re-signing. Using this mechanism, the file name of the file is the channel name. This method does not require re-signature and other steps, it is very efficient.   Two. Method Me ...

iOS Picture Rotation Method Rotate specific angles through CGImage or CIImage UI Image can be initialized by CGImage or CIImage by init (cgImage: CGImage, scale: CGFloat, orientation: UI Image Orientation) and init (ciImage: CIImage, scale: CGFloat, orientation: UI Image Orientation). Through different values of UI Image Orientation, the image ...

ABSTRACT: Have you ever experienced something like <null>, (null) on the interface, and sometimes it flickers back somehow? Repeatedly, it's really a dog. Today, let's summarize the solution to this problem. Some time ago, in the development process, some inexplicable places on the interface show < null > and some places show < ...

Let's briefly introduce why we want to study the background of this issue. We hope we can customize our own implementation based on weex framework.js. The integration degree of weex has reached the warehouse of Vue. Learning this will also help us to understand the context of Vue. Starting with package.json, five hooks related to weex construct ...

objective Simulating Masonry's Continuous Use of Point Grammar [self.view mas_makeConstraints:^(MASConstraintMaker *make) { make.top.equalTo(@10).offset(1); }]; Write out a join operation make.add(10).add(10); If you want to see the result, jump directly to the "final result" Analysis Definition of SQMath class SQMath.h ...

1. Inter-thread communication In a process, threads often do not exist in isolation, and multiple threads need to communicate frequently. 1.1 Embodiment of Interthreaded Communication (1) One thread transfers data to another thread; (2) After a specific task is executed in one thread, it is transferred to another thread to continue ...

GoLanguage is used in my work. Look at the open source http/request.go. The following code was found const ( defaultMaxMemory = 32 << 20 // 32 MB ) This 32M is really a force lattice. First of all, I will briefly introduce that "moving left is equivalent to multiplying 2, and moving left 20 is equivalent to multiplying 20 pow ...

Late at night - the world was so sexy Project brief introduction The project is written in pure code and the project cycle is 14 days. APP is divided into three big modules Night module Select module Thematic module Project Display Analysis Overall structure Trilateral wheels used Project timeline February 7, 2017 Network Tool Class ...