Learning process of ListView control for Android

Learning and error correction process of ListView control for Android School experiment implementation: establish a ListView component in the program interface. The component is divided into four lines with three items in each line. It displays "Zhao Linnan 20; Qian jienan 24; sun hongnv 22; Li Chengnan 29" respectively. Click a line ...

Added by iceblox on Sat, 04 Dec 2021 07:26:58 +0200

[QT] use of GraphicsView, QGraphicsScene and QGraphicsEllipseItem

preface QT provides two classes for drawing. Here is a brief introduction to the differences between them (QPainter and GraphicsView). QPainter means brush in English, and this class is painting on a plane. The picture drawn cannot be changed later. The general place to use is to make some cool controls without making major changes later; ...

Added by bryan52803 on Thu, 02 Dec 2021 20:23:44 +0200

Android application life cycle to achieve a simple stopwatch App

1. Functional analysis 1.1 stopwatch function interface 1.2 App structure 1 Activity: MainActivity1 Layout: activity_main.xml 2. Development view layout 2.1,activity_main.xml <?xml version="1.0" encoding="utf-8"?> <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android" ...

Added by zed420 on Thu, 11 Nov 2021 09:11:23 +0200

Android introductory tutorial | linear layout of UI layout

home pagespecial columnandroidArticle details0Android introductory tutorial | linear layout of UI layoutAndroid_ An Zi Published 3 minutes agoHow many layouts does Android have?LinearLayoutRelativeLayoutFrameLayoutTableLayoutGridLayoutAbsolute layoutLinearLayoutLinearLayout, also known as linear layout, is a very common layout.Multiple views ca ...

Added by Paingiver on Fri, 29 Oct 2021 05:53:58 +0300