Android
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Two ways for rxjava to implement three-level cache in Android
As mentioned in the title of this article, rxjava is used to realize the three-level cache of data, namely memory, dis…… -
Method for Android to obtain internal and external memory cards
In previous Android (versions before 4.1), the sdcard and path represented the memory card through "/ sdcard" or "/ MN…… -
How does Android convert URLs into QR codes
QR code has become an unavailable product in our daily life. There will be QR code on train tickets, scenic spot ticke…… -
Textview is used in Android to realize the effect of text running lamp
Usually, we need to set this in the XML file in order to achieve the riding light effect of text We don't explain what…… -
Alertdialog and custom dialog commonly used in Android
Common dialog boxes include confirmation dialog box, radio button dialog box, multi-choice button dialog box, check bu…… -
Android custom view imitates the reward button function of Tiger flutter live broadcast interface
preface As a senior basketball enthusiast, I often use the Tiger flutter app to watch the game live broadcast. Later, …… -
Asynctask official documents and tutorials
brief introduction Android provides us with a lightweight asynchronous task class, asynctask. This class implements as…… -
6 steps to easily realize the linkage effect of two listviews
After reading many linkage demos updated on the Internet, I feel that the writing is not very concise (indicating that…… -
Android uses listview control to operate SQLite database instance
In this example, firstly, we use sqliteopenhelper class to establish a database, write the methods of adding, deleting…… -
Android implements a simple app login interface
Today, we need to build a login interface for all apps, just to consolidate the basic layout knowledge we learned befo…… -
Solution of Scrollview nested GridView in Android
A few days ago, it was used in the development that Scrollview nested GridView. Because these two controls have their …… -
Android imitation QQ unread message — red dot drag and delete [source code]
This demo is an example of dragging and deleting unread messages imitating QQ. Waterdrop inheriting relativelayout rea…… -
Android uses gallery and imageswitch to make a picture browser that can slide left and right
design sketch: In order to make the picture browser slide around indefinitely, we need to customize the gallery adapte…… -
Advanced Android – Android calls ESC / POS printer to print an instance
preface Some time ago, due to work needs, we need to study the Android program calling the printer to print small tick…… -
Detailed explanation of Android USB to serial communication development example
Detailed explanation of Android USB to serial communication development example I haven't written for a long time. Yea…… -
Positioning of Gaode map developed by Android
In application development, map development is a "component" that often needs to be used. Although Google map has offi…… -
Introduction to the basic usage of glide, an Android image loading framework
brief introduction Glide is a picture loading framework, which can load and display pictures in a simple way on the An…… -
Detailed explanation of common Android controls
This example shares the use methods of six common Android controls for your reference. The specific contents are as fo…… -
Detailed explanation of multi style display examples of Android listview entries
Multiple style item display of listview I won't talk about others here. I will directly introduce the operations in th…… -
Android EditText prohibits entering spaces and special characters
Sometimes we need to limit the character types of EditText input, such as spaces, special characters, etc. at this tim…… -
Android SDK manager failed to update. Problem resolution
Android SDK manager failed to update. Problem resolution Recently, when playing Ubuntu, the SDK files previously downl…… -
In Android, press the home key and jump to the example code of the main interface
//home //Main interface //Volume reduction The above is the example code of pressing the home key and jumping to the m…… -
Android imitation wechat click photo long press video function example code
This article is a look at Guo Shen's official account, which is only for learning. Add in modlue gradle Add in project…… -
Detailed explanation and simple example of Android WebView
WebView basic usage To load a web page, use loadurl(): Set the web page to be displayed by WebView For local files: Lo…… -
Explain the basic process of Android USB to serial communication development in detail
I haven't written for a long time. Years ago, the company opened a new project related to USB to serial communication.…… -
Android skillfully uses decorview to realize dialog function
If you don't know decorview, it doesn't matter^_^ Let's take a look at the effect General idea of implementation [lots…… -
ImageView in Android realizes the function of selecting local pictures and displaying them
Operation results: There are only three simulators in the library. I can't help it. The picture quality is very moving…… -
Detailed explanation and examples of volley in Android Development
Detailed explanation and examples of volley in Android Development Recently, when I was working on a project, all kind…… -
Android gesture password implementation example code
1、 Effect realization 2、 Implementation idea: 1. The prompt area directly above is implemented by a class (lockindic…… -
The EditText control of Android prohibits the input of spaces and carriage returns
1. The EditText input box controls that no spaces can be entered. Add an addtextchangedlistener to EditText to listen.…… -
Android TimePicker direct input problem solution
Android TimePicker direct input problem solution TimePicker provides up and down buttons. Click the button, and the re…… -
Detailed examples of Android judging network status
Detailed examples of Android judging network status Example code Add permissions: access network permissions Thank you……