Programmer Think

I. business scenario: for example, if the verification code is obtained on ios mobile phone, it will be displayed on the keyboard, and then clicked, it will be automatically filled in the input box; at this time, the input box is a good one, and it will be automatically filled in, but now it is required that the 6 digits of the verification cod ...

When making a view of floating layer rolling chat, MLEmojiLabel and TTTAttributedLabel are used as three-party open-source files. The problems encountered are: 1. According to the demo of MLEmojiLabel, add emojiLabel to the content view of tableView, and find that emojiLabel will always be about 5pt lower. 2. With the increase ...

Upload file format POST /php/upload/upload.php HTTP/1.1 Host: 127.0.0.1 Content type: multipart / form data; boundary = identity (customizable) Request body --Identity (customizable, but must be consistent with the request header) Content-Disposition: form-data; name="userfile[]"; filename="head1.png" Content-Type: image/png Bla ...

Title: There is a chessboard with an initial color of all white n*n. each time you select a rectangular area to reverse the color, ask how many black squares there will be at the end. N, k<=10000 Analysis: It's the same as scanning line. Record each transverse edge and project it to the x-axis. It's just that there's no d ...

demand The user-defined TabBar has been implemented before, as shown in the figure: Customize TabBar.jpeg Now you need to implement a function similar to today's headline TabBar - if you continue to click the selected item of the current TabBar, the UI table view needs to be refreshed. Analysis Now that TabBar has been custom ...

If there is such a demand: click a button, copy the text of a certain text to the clipboard for use, we need to use some methods.On the pc, we can copy text using document.execCommand('copy'); But not on the mobile side. The project I chose is clipboard, and the actual measurement effect is perfect. On the official website of clipboard https:/ ...

More and more promoters and operators choose to use wechat for promotion, or to obtain more customer resources through wechat, APP promotion is no exception. Due to the saturation of the app market, there are strict auditing standards in the app market, and there is a lot of human and material resources wasted. As wechat now downloads, the tra ...

8. Explicit animation Explicit animation If you want things to go smoothly, you have to rely on yourself The previous chapter introduced the concept of implicit animation. Implicit animation is a direct way to create dynamic user interface on iOS platform, and it is also the basis of UIKit animation mechanism, but it can not cover all types ...

In the previous article, the default cell selected for UICollectionView is that each cell has a corresponding identity, which means that the reuse mechanism of UICollectionView is abolished. For less data, it is OK, but for larger data, it will cause performance problems. So I think that under the reuse mechanism of UICollectionView, the gener ...

By Jeskson Source: front end tavern of dada The framework of uni app, configuration: page.json, manifest.json, package.json, vue.config.js. Script, application, main.js. Log printing, timer, life cycle, page, page communication. pages.json file is used for global configuration of uni app. It is used to write path, window style, tabbar at the ...