Programmer Group

1. What is RecyclerView? According to the official instructions of Google: A flexible view for providing a limited window into a large data set. It can display flexible views of large data sets in limited windows. So we can understand that an appropriate use scenario for RecyclerView is that due to size constraints, the user's devi ...

Android Baidu Map (1): Detailed introduction of sdk-type method parameters and positioning principle for Baidu Map positioningAndroid Baidu Map (2): Baidu Location and Map Display Location Points Source address https://github.com/zhuhao Happig/BaiduMapApi The last article describes how to display location points on a map. This article mainly de ...

Recently, due to the migration of code on the company's vm, some problems have been encountered. One VM configures the https protocol. It was thought that after migrating the security certificate, nginx can be configurated. But after modifying the nginx configuration file, after executing the nginx-t command, the following error is reported: n ...

This is my blog once. 1. Customize a dialog to pop up the bottom pop-up window. It can nest multi-layer controls. Note ViewPager, Recycler View, imageview, etc. can be nested. 2. Set style first, and imitate Google's native dialog to set style. <style name="style_location_dialog" parent="@android:style/Theme.Dialog"> &lt ...

json parsing of Android Introduction to json JSON is one of the data types we often use in network transmission. So what is json? The full name of json is JavaScript Object Notation. He is a grammar for storing and exchanging text information. It's smaller, faster, and easier to parse than XML The following three ways of json parsing are ...

What is Dependency Injection? Instead of initiatively initializing dependencies by ourselves, dependency injection is introduced through external dependencies, which we call dependency injection.And what are the benefits? Decoupling, decoupling dependencies. Convenient unit testing. What is a dependency injection framework? It's a framework t ...

Implementation of Dropdown Menu with HTML and CSS The code for the html section is as follows: <div id="nav"> <ul> <li ><a href="#">home page</a></li> <li><a href="#">Learning Center</a> <ul> <li><a href="#">JavaScript&l ...

Why can't 80% of yard farmers be architects? >    I don't know how long ago, there was a small software that wrote an automatic rep ...

Euler'totient function Author: Jasper Yang School: Bupt Preface The derivation of gamma function will appear so-called Euler function (phi). In a paper, I need to evaluate several Euler functions. The results are not comprehensible. I go to google immediately and find an open source python library to calculate Euler function. class eulerlib.n ...

For those who study React Native or the front-end, they must know something about Flexbox, because it is a layout scheme of CSS in the front-end domain. Now google has open source Flexbox-like project called Flexbox layout, so android can also use Flexbox layout to achieve a layout similar to the front-end Flexbox. Firstly, Flexbox layout has ...