Mobile Development Technology Assignment 2: Implementation of Recycleview click-to-jump function

1. Function description Implement the functional design of page jump and return to the module that has added recyclevie 2. Development Technology Development tools: Android studio Version: API 32 Android 12 3. Development ideas and core code In the last article, I placed recycleview1 in fragment2 (information interface). Due to design needs, I now put […]

Android mobile development assignment–implementation of click-to-jump function of Recycleview

Table of Contents 1. Design goals 1.1 Design requirements 1.2 Introduction to design functions 2. Detailed design explanation 2.1 Define the contactMS class 2.2 Define layout files 2.3 Modify Myadapter adapter 2.4 Define ContactDetailsActivity.java 3. Run interface display 4. Source code warehouse address 1. Design Goals 1.1 Design Requirements Relying on assignment 1, add a […]

Storage structure and query performance optimization of ClickHouse primary key index

Table of Contents Storage structure and query performance optimization of ClickHouse primary key index 1. Storage structure of primary key index 2. Query performance optimization methods 2.1. Use primary key index table 2.2. Column storage and data compression 2.3. Merge engine (MergeTree) 2.4. Data copy in conclusion Sample code: Use ClickHouse for e-commerce sales data […]

A turntable (music disk) made by Vue that rotates at a click. When you click to stop, it will slowly stop within a few seconds. Click the button again to rotate again.

Look at the effect first: Code: I will draw the main parts with red lines css:section: Source code: vue part: <template> <div class=”song-lyric”> <div> <div class=”type”> <div class=”right”> <div class=”right-center” :class=”{ ‘rotates’: isplay }”> <div> <img src=”//i2.wp.com/imagesone.oss-cn-beijing.aliyuncs.com/imagebishe/player_bar.png” class=”right-top” :class=”{rotated: isplay}”> </div> <div> <img src=”//i2.wp.com/imagesone.oss-cn-beijing.aliyuncs.com/imagebishe/disc.png” class=”tight-bottm” :style=”{ transform: ‘rotate(‘ + rotationAngle + ‘deg)’ }”> </div> </div> […]

Android mobile development — page jump by clicking on RecyclerView content

1. Experimental objectives: Add a click function to each item of the recyclerView in the first experiment, and jump to a new view interface after clicking. 2.Technical description: 1. Tools used: Android studio 2. Version information: API 32 Android 12 3. Main technical content: recyclerview, adapter, activity, fragment 3. Design ideas: Change each line of […]

Mobile development-simple implementation of Recycleview click-to-jump function

Homework objectives Relying on assignment one (mobile development – experiment 1 – simple implementation of WeChat interface – CSDN blog), add a click function to each item of recyclerView, and jump to a new view to display information after clicking. Design ideas First, design the page discover_detail.xml that recycleview will jump to, then create a […]

[PyQt] (self-made class) handles mouse click logic

I wrote a class that I think is pretty good to simplify the mouse information in mousePressEvent, mouseMoveEvent and mouseReleaseEvent. The functions include the following: Current mouse status, including left/middle/right mouse button and click/double-click/lift Mouse anti-shake (only when the mouse has moved beyond a certain level), the sensitivity can be set; Mouse long press (triggered […]

How to add permissions to vxetable right-click menu options and render based on row data

How to add permissions to vxetable right-click menu options and render based on row data Business scenario: ? The page has button permissions, and the right-click menu function is also implemented on the form. It is also necessary to control the permission function of the right-click menu. Solution ideas: By viewing the document, right-click the […]