Programmer Group

This series of articles focuses on the Tmall team's open source Tangram How to use the framework and why, since Tangram's underlying layer is based on vlayout This series will be outlined below: Demand Background Introduction to Tangram and vlayout Use of Tangram vlayout principle Tangram principle Tangram secondary packaging This article int ...

Android Chart Gallery MPAndroidChart(6) - A new way of thinking, the implementation of horizontal bar charts 1. Basic implementation We've achieved bar charts before, but now let's see how horizontal bar charts work. To put it in perspective, we'll just cross them and see the effect: It's much easier now to write a b ...

Recently upgraded to Android Studio 3.0, there was a sudden error when packaging the test. The error is as follows: Error:Cannot choose between the following configurations of project :UMUpdate: - debugApiElements - debugRuntimeElements - releaseApiElements - releaseRuntimeElements All of them match the consumer attributes ...

To be honest, the definition of paging data source is too tedious, so it's encapsulated twice, without any intrusion, clean and neat. It's preserved for the time being, maybe it can be used in my life.. package com.lk.care.respository import androidx.paging.DataSource import androidx.paging.PageKeyedDataSource import androidx.paging.PagedList ...

According to the American Association of motor vehicle managers (AAMVA https://www.aamva.org/DL-ID-Card-Design-Standard/ )According to the regulations of PDF417, the US driver's license uses PDF417 code, as shown in the following figure: Google Mobile Vision SDK The Google service supports driver license resolution. You can find the correspond ...

In ios7, there is a flat style control called SegmentedControl, which is divided into rows with several buttons separated by simple lines. Only one button can be selected per click. It is similar to tabbar but slightly different. This control is used by new qq mobile client. However, there are no ready-made controls available in android, but th ...

In Android, attribute animation is a very interesting function to control the animation effect of parameter transformation Compared with gif image, animation controls need to save space and increase response speed main points: (1) Use PercentLayout to set the size of custom controls (2) The two important functions of attribute animation are ...

Android adaptation has always been a big hate of Android developers. Fortunately, Android 5.0 provides a universal adaptation method. For details, please refer to Zhang Hongyang's universal adapter. However, it doesn't necessarily work for the development of TV or the Internet of things in the current fire, because the companion machine of the ...

VerticalViewPager a vertical scrolling ViewPager Inherited from ViewPager, it has the same usage as ViewPager, including adapter, listening, but the sliding direction is different. Occasionally, we will find that viewpager wants to slide vertically, but the official doesn't provide a method. We found this on stack overflow, which can perfectl ...

Solution to the problem of recycle view reuse disorder Achieving results Single item selection with checkBox After killing the application in the background, enter the application again to display the options when killing the application in the background Problem description Because recyclerView adopts the reuse strategy, when refreshi ...