With the acceleration of Internet plus Internet of things, the application of video surveillance has become more and more extensive. Among them, Hikvision Dahua and other brand cameras are frequently seen in the field of vision. Because last year also realized the video monitoring scheme on the smart site project, and the current live broadcast ...
Posted on Tue, 07 Apr 2020 03:43:13 -0700 by FramezArt
Most mobile APP s will have function modules to do tasks and receive rewards. The purpose of this kind of demand is to cultivate user usage habits, improve user activity, get credit reward for completing tasks, exchange goods or charge charges through credit, WeChat and so on.
Draw up a requirement scenario (Fig.), outline: Add a sm ...
Posted on Mon, 06 Apr 2020 09:35:06 -0700 by Chef-Mars
Some time ago, a little friend left a message saying that I would like to take you to write a small desktop pendant. Today, I would like to meet the request of a little friend who has left similar words. But I feel that it is not interesting to write a desktop calendar, so I will simply take you to make a desktop pet~
Don't talk t ...
Posted on Mon, 06 Apr 2020 02:15:44 -0700 by SBukoski
Introduction to quick sorting
Quicksort is an improvement of bubble sort. Fast sorting was proposed by C. A. R. Hoare in 1960. Fast sorting algorithm is listed as one of the top ten algorithms in the 20th century, which shows its role and importance. Fast sorting is a sort algorithm that programmers must master.
Hill sort ...
Posted on Sun, 05 Apr 2020 09:49:25 -0700 by kidd1270
I remember sharing with you about using media query to solve the problem of mobile device adaptation. As a front-end person, when you need to do mobile devices and use media query for mobile adaptation, I believe you will crash at this time. For small editors, the last thing they want to do is to solve the adaptation problem. U ...
Posted on Fri, 03 Apr 2020 22:55:54 -0700 by yogibear333
Control the movement of the ball by rotating the mobile phone
The event.beta property, which represents the rotation along the X axis, has a value range of [- 180, 180).
Control the left and right movement of the ball
The event.gamma property indicates the rotation along the Y axis, and its value range is [- 90, 90). Indicates up and down ...
Posted on Thu, 02 Apr 2020 20:12:00 -0700 by ypkumar
Decoration mode is to dynamically extend the function of an object without changing the original class file and using inheritance. It wraps real objects by creating a wrapper object, or decoration.
Two, UML diagram
3, Code instance
1, Requirements: use decoration design mode to realize mobile phone ...
Posted on Thu, 02 Apr 2020 10:30:15 -0700 by Invincible
Solve the problem of mobile canvas blur
Step 1: enlarge the canvas four times, and set the width and height of the style in the row to four times the original
Step 2: enlarge the contents of the canvas by four times
Step 3: make the canvas 100% wide and high, and make it clear after compression
It's di ...
Posted on Thu, 02 Apr 2020 09:30:21 -0700 by Bret
Now many apk s call system cameras to take photos and select system photo albums. GitHub and major websites have many packages. zb is not here!
Directly on the code bar: photo taking and selection system album are adapted to the system above 7.0, and the code has comments
" private static final int TAKE_PHONE = 1;
Posted on Thu, 02 Apr 2020 06:07:47 -0700 by endersix
In Android development, there will be a variety of tool classes to help us develop projects quickly. This time, we will implement the tool class of SharedPreference
Buddha once said:
// 88" . "88
Posted on Wed, 01 Apr 2020 20:39:37 -0700 by shinagawa