Tag：location
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Time：2021-1-21
Question: Recently, after upgrading the system to ios11, it was found that the app did not prompt whether to allow the location to be accessed all the time, and ibeacon did not work. I checked the privacy settings of my mobile phone, as shown in the figure: reason: Because Apple has added a new privacy […]
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Time：2021-1-16
Boundary is very important for location problem. Borderalign, the core idea of borderdet, is ingenious and effective. It not only integrates boundary features into target location prediction, but also can be easily integrated into various target detection algorithms, which brings great performance improvement. In the open source implementation, the efficient CUDA implementation of borderalign will […]
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Time：2021-1-12
Today’s knowledge (February 16, 2020) – day 306 How to solve the problem of invalid width setting for TD in [HTML] table? [CSS] talk about your understanding of relative positioning, absolute positioning and fixed positioning What’s the difference between [JS] expressions and statements? How to convert a statement to an expression? [soft skills] do you […]
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Time：2021-1-11
Some problems encountered in opening permissions in Android 6.0 A small white, record learning encountered some pits Recently, we are doing experiments on Android, using location manager to locate, and found that the AndroidManifest.xml In the file It’s a security problem to declare that opening permissions can’t really open the desired permissions. In fact, we […]
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Time：2020-12-31
Due to its historical reasons (need to be compatible with devices without mouse, such as teletypewriter), the command line shell under Linux often does not have its own mouse positioning cursor support, which causes a troublesome problem: if I write a very complex command and want to modify part of the contents and execute it […]
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Time：2020-12-29
Why There are three ultimate philosophical problems in human life What’s for breakfast What’s for lunch What’s for dinner I don’t know how many philosophers like me are bothered by this problem. When they work half a day, they are thinking about this philosophical problem.Lu XunSaid: People who don’t know what to eat every day […]
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Time：2020-12-29
1、 The box under standard flow is horizontally centered Works only on block level elements margin : 0 auto ; 2、 The absolute positioning box is horizontally and vertically centered 1. Center the box through specific calculation position : absolute ; /*Move half the width of the parent element*/ left : 50% ; top : […]
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Time：2020-12-28
1. Find the PHP related directory or file in the system $ find / -name php 2. View the PHP version information listed $ /usr/bin/php -v $ /www/server/php/73/bin/php -v 3. Add your own compiled PHP path to the environment variable $ vim /etc/profile Shift + G to the last line, add your own compiled PHP […]
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Time：2020-12-28
1. floatFloating will be separated from the document stream, and layout problems will appear if it is not handled well, but the compatibility is good div { height: 300px; } .left { background: red; width: 300px; float: left; } .right { background: green; width: 300px; float: right; } .center { background: yellow; } <div class=”left”></div> […]
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Time：2020-12-28
requirement: There is an input box when the user pressessKey, the cursor is automatically positioned in the input box. Realization idea: Check whether the user pressedsKey, if pressedsKey to locate the cursor in the search box Use thekeyCodeJudge whether the s key is pressed by the user Search box get focus: Usingfocus()method Code implementation: Content: […]
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Time：2020-12-24
When you use positioning, do you encounter the situation that one positioning element cannot cover another even if it is set at a higher level? By understanding the cascading context, you can better build your application. Understand the rendering process and stacking order When a browser parses HTML into a DOM structure, it also creates […]
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Time：2020-12-16
catalog Background Exploration process Do other apps have similar functions Can the shake callback provided by the system be satisfied Can other methods be implemented Use coremotion framework to monitor accelerometer raw data Listen and shake with the accelerometer Controller related logic and code After the app applies for background operation permission, can it be […]
