Programmer Group

Sometimes we see some pad of control equipment in some hotels. When we click the close button, we will turn off the device and turn off the pad screen. Today, we will try to realize the function of clicking the button to turn off the screen. 1. Create an XML folder under res and a resource file of lock_screen.xml. The source ...

Objectives: Extract function information in java code (function name, function return value, function return value type, function parameter) thinking 1. Match function header (public static void name()) Normal function headers start with public or private or protected+ Not all functions have static - \ s ...

Countdown function, for example: send SMS verification code countdown. 1 public class CountDownTimerActivity extends Activity { 2 3 private Button mSend; 4 private SendCountMessage mCountMessage; 5 6 @Override 7 protected void onCreate(Bundle savedInstanceState) { 8 super.onCreate(savedInstanceState); 9 ...

As for Toast, I'm sure you are familiar with it. Here's a summary. There are five ways to use Toast: Default style Custom location Custom picture Fully custom layout Use in other threads All right, no more nonsense, just look at the code 1. first, add 5 buttons in the activity.xml file to click the event to pop up the Toast ...

Using freemarker to save the ecrats picture to word In a business in an existing field, it is often necessary to make statistics on a kind of data, generate echarts charts and export them with corresponding description materials: Save eckarts locally java reads pictures for base64 encoding Making freemarker templates ...

brief introduction In some apps with payment function, the password can only be a pure number. Although we can specify that the EditText input box can only be a number, in order to provide user experience, we tend to use a custom pure number keyboard. Effect of this paper: Customize KeyboardView Implementation steps: ...

Exercise 4.12: the popular web comic service xkcd also provides a JSON interface. For example, an https://xkcd.com/571/info.0.json request will return a detailed description of the 571 number that many people love. Download each link (only once) and create an offline index. Write an xkcd tool that uses these offline indexes to print the URL ...

In HTTP service, header parameters and form parameters are often used. This article is mainly to practice how to parse the parameters and form parameters in the header of HTTP request in Go language. The specific code is as follows: package server import ( "net/http" "strconv" "fmt" ) func HttpStart(port int) { http.HandleFunc(" ...

Python web crawler practice (2) 1, Demand analysis Crawling a novel from a novel website Two, steps target data website page Analysis data loading process Analyze the url corresponding to the target data Download data Cleaning, processing data Data persistence Key point: analyze the url corresponding to t ...

Unconsciously, I have been developing nodejs for more than a year. I learned a lot in the process and forgot a lot, so I still insist on leaving some content in the blog for later reference. This article mainly realizes a simple website crawler function, grabs the website inside picture as well as the content. Before grabbing, the modules of SU ...