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1. Two ways to start the service There are two ways to start a Service in an Activity. The life cycle of a Service is different when it is started in different ways. Now, four buttons are defined in an Activity, which are startService, stopService, bindService and unbindService. Log logs are printed in each life cycle of the Service to view the ...

An easy way for Android to bind services Here are the services: A Service is an application component that can perform long-running operations in the background and does not provide a user interface. Binding services provide a client server interface to allow components to interact, send requests, get results, and even use interprocess communic ...

In recent days, we have done an Android task to get Json. We found that Jsoup can only get static pages, but not dynamic pages. Some students corrected it for me: Jsoup can crawl the dynamic page, but it must add the request header (data). The following is the correct example: String url = "Your web interface"; Map data = Maps.newHashMap(); d ...

Original October 29, 2017 serious Xiao Su Introduction to decoration mode Decoration pattern, also known as packaging pattern, is one of the structural patterns. It uses a transparent way to the client to dynamically expand the function of the object, and it is also one of the alternative schemes of inheritance r ...

Use the addTextChangedListener(TextWatcher watcher) method of EditText to monitor EditText. TextWatcher is an interface class, so the abstract method in TextWatcher must be implemented:When the content in EditText changes, the TextChangedListener event will be triggered, and the abstract method in TextWatcher will be called.Layout: <?x ...

Voice communication scheme System level solutions and self built protocols windows platform, linux platform, embedded linux platform, mcu platform 1. Voice solution of wired communication developed on Embedded Linux This scheme is developed on Embedded Linux. The audio scheme is based on ALSA. The voice communication is related to user ...

Android Global Catch Exception 2018/1/24 11:47:52 prospect Reduce Bug s Solve Bug s as soon as possible Bug on user's mobile phone after going online, no hair knows Bug Require tool classes, catch exceptions, don't crash, restart from scratch, make users feel insensitive Why use global catch exceptions Using global catch exceptions, w ...

When using RecylerView to display data, a floating button is displayed at the bottom right. Its functions are: Hide the button when pulling up, show the button when pulling down, and click this button to return to the top. As shown in the picture: The layout is as follows: <!--Without adding CoordinatorLayout，FloatActionButton Wil ...

Preface Let's first look at an effect and expand the content of this article. Realization After a general App is refreshed, it will show how much content or update has been added. It is common for news or live broadcast. So, how to achieve this effect? Pull down to refresh. After getting the latest data of the server, the siz ...

1. This time, the server uses HTTP Servlet to return json data First, build a Java Web project and create a Servlet class. The code is implemented in doGet /** * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse * response) */ protected void doGet(HttpServletRequest request, HttpServletResponse response) ...