Android

Android QR code scanning (zxing usage summary) There are three main points: 1. Draw the interface, including four corners, scrolling up and down, and adding text to the canvas 2. Adjust the position of the QR code scan box. 3. Solve the Problem of

Use of ExpandableListView in android development to implement a list similar to QQ friends Due to work needs, I briefly studied ExpandableListView today and made a Demo similar to the QQ list to share with you.As follows: Let's take a look at the

Usage of the Spinner in Android (usage of the drop-down list) Step 2: Write the Spinner drop-down list To write a Spinner: 1. Set the data source. Use List set to write2. Create an ArrayAdapter (array adapter)3. Set a drop-down list Style4. bind an

Android 2048 game logic analysis, android2048   I continue to learn the practical path course of geek College and talked about the compilation process of 2048 games. I will give a summary here to share with you (the results will be accompanied by

Enterprise ID development: Attendance Baidu map location 2, attendance Map  Using the method in the Baidu map location of attendance, you can locate a specific location in a province, a city, a certain District, a certain road number, it always

Android practice simple tutorial-59th gun (EventBus small instance-pass value, control other page controls display), androideventbus The android-based shoes all know the value transfer between pages. You can use Intent to transfer the value, but it

[Android Studio authoritative tutorial] packaging, generating jks keys, signing Apk, and multi-channel Packaging In the previous article, we talked about multi-channel packaging. When we used the signature file in eclipse, the. keystore file is

Immersive status bar for Android In the previous article, we implemented the color-changing status bar for Android, and introduced the differences between the immersive Status Bar and the transparent status bar. In this article, we implemented the

Android package MultiDex principle explanation, android package multidexBackground of MultiDex When the Android system installs an application, one step is to optimize Dex. In this process, there is a dedicated tool for processing, called DexOpt.

How to Use OpenCV in Android Studio, opencvandroidHow to Use OpenCV in Android Studio CreatelibrariesFolder underneath your project main directory. For example, if your project isOpenCVExamples, You wocould createOpenCVExamples/librariesFolder. Go

Solution to the Problem of incorrect item button listening in ListView in AndroidThis problem is often encountered during development. A list is created to add button listening events to each item in the list, however, when there is a lot of data in

How to do an electronic signature? Before introducing the electronic signature, we will first introduce Hash, also known as Hash or Hash. The Hash function is defined as a variable-length input to a fixed-length output. Common Hash algorithms: MD5 (1

Interpreting Android ContentProvider (1) CRUD operations, androidcrud This article is translated from the official android documentation and tested by yourself. Content providers can manage structured datasets, encapsulate data, and provide a data

IOS-button (UIButton) cannot interact with users in five situations, ios-uibutton Attribute:1. If alpha 2. Set "hidden = YES" to "hidden" and cannot be clicked. Storyboard property settings3. userInteraction = NO Relationship between views 4.

Android Official Document Series (translation) and android Official Document Series The following content is an article about the official Android documentation. Cainiao is on the road. Learn and organize it. If you find any errors, please do not

Zhihu (highly powerful) android development offer -- get, androidofferFirst introduce yourself I am a senior, computer shuiben, and I miss my postgraduate entrance exam. I am now working as an intern in the algorithm department of a company in

IOS project development practice-customize the navigation bar and Status Bar background, and develop ios Projects On the top of the iPhone status bar, there will be a lot of information, such as the operator, signal strength, network status, time,

The Service is not completely parsed, and the Service is not parsed. This article does not introduce service usage and lifecycle, but records and analyzes some key points. We all know that a Service is an application component executed in the

Android learning notes-Dialog explanation, android-dialog 1. Use of the dialog box 1.1AlertDialog display Simple dialog box and listener settings: focus on three buttons (that is, three words ): PositiveButton (confirmation button); NeutralButton

ViewPager Entry 1: ViewPager entry You can use ViewPager to switch between different views. For example, the sliding between the four views is realized. 1. Create a project and introduce the ViewPager control ViewPager. It is a class that comes