this instance is the control of progressbar. In the previous example, if the handlemessage () method of the handler instance is used to trigger the handlemessage (Message mesg) method:
// Start execution when the button is pressed. mbutton01.setonclicklistener (New button. onclicklistener () {public void onclick (view v) {m_progressbar.setvisibility (view. visible); // set the progressbar to the visible State m_progressbar2.setvisibility (view. visible); m_progressbar.setmax (100); // sets the
Libgdx Overview
Libgdx is a cross-platform 2D/3D Game Development Framework written in Java/C ++. It is based on the Apache license and Version 2.0 protocol and is free for commercial and non-commercial use.
Libgdx is compatible with windows, Linux, Max OS X, Java Applet, JavaScript/webgl, and Android [4] (version 1.5 +) platforms. The support for the Android platform is growing in the
20165336 experiment four Android programming one, experimental report coverCourse: Java Programming class: 1653 class Name: Kangzhijiang No.: 20165336Instructor: Lou Jia Peng Experiment Date: May 14, 2018Experiment time: 13:45-15:25 Experiment serial number: Experiment FourExperiment Name: Android programmingSecond, the experimental requirements1. Students who do not have a Linux base are advised to start w
Android Ui update (2)World in code
1. Review
The first part describes the methods and opinions on Ui thread update, and then describes the Thread Check Mechanism. Here we will analyze in detail the message system model in Android, which is the core of Ui update. Of course, what we will talk about here is no longer simply the scope of updating the Ui. However,
Android mobile Development Study Notes (2) magical Web APIs
I will explain Web APIs in two major directions. 1. How to Implement Web APIs? 2. How does the Android client call Web APIs? What is Web Api? What are the advantages and disadvantages? Why use WebApi instead of Webservice? These questions will not be answered.
Source code analysis of View rendering mechanism in Android 2
This article goes on to the content of the previous article to continue to discuss the Drawing Mechanism of the View. In the previous article, we mainly explained the measure process of the View. Today we will learn the measure process of the ViewGroup, viewGroup is just an abstract class, so we need to analyze the measure process with a specifi
Android weather forecast application design (2) III. Detailed Design
In this article, we refer. In addition, during source code analysis, only schematic and Structured code is selected for analysis. The complete source code of the program can be downloaded at http://download.csdn.net/detail/frankxuanhui/3593051.
(1) multi-thread processing of Weather Information Query
Because the query of weather informatio
Android View measure (2) related to the custom UI control measure, androidmeasure
This article simulates three roles: Android architect-Xiao Fu, Android control development engineer-Xiao, Android Development Engineer-Xiao Bai. The following describes the measure process fro
One JDK downloadDownload JDK7 from Oracle official website, not download the latest JDK8, because the habit of downloading the new version, relatively stable.JDK Download Home: http://www.oracle.com/technetwork/java/javase/downloads/index.htmlJdk7:http://www.oracle.com/technetwork/java/javase/downloads/jdk7-downloads-1880260.htmlThe Linux X64 version is selected as follows:Two JDK decompressionsudo tar-zxvf jdk-7u67-linux-x64.tar.gz-c/usr/bin/androidThree JDK settingsNext configure the JDK envir
Disclaimer: The book "Secrets of Android Application Development", which records the logs of the book, references the relevant code and summary, and has no commercial use, it is completely a record of self-learning, and many problems will inevitably occur in learning just now. If there are any mistakes, please criticize them a lot.
I. Data Storage-SQLite database operations
Three data operations have been learned before, and there is also one of the m
Address: http://yangyangzhao.blog.163.com/blog/static/17581636620101163758306/
In the non-startup interface networking practice of the android RIL module (I), we finally found that we only need to call the radiooptions program to achieve the goal of networking. Everything seems simple.
Actually how? Call radiooptions In the android shell to obtain its usage
Bash-4.1 # radiooptionsUsage: radiooptions [Optio
In Android Menu Design (1): the Options menu is created using the XML file layout. But in actual development, you still need to pay attention to several issues. This article discusses related issues.
Before entering the formal topic, you need to know something.
1. Create option menus using XML
Note: When using menu. in the getitem (INT index) method, the index parameter is the order in which you create items in XML. For example, the menu with ID new
several reasons for HAL:
1. Not all hardware devices have standard Linux kernel interfaces.
2. the kernel driver is copyrighted by GPL. Some device manufacturers do not disclose hardware drivers for any reason, so they use Hal to bypass GPL.
3. Android has some special requirements for some hardware.
In the Display Section, the Hal implementation code is in copybit. C. The application can directly operate
Lua learning 2) -- interaction between Android and Lua, androidlua
2014-07-09
1. Android class calls lua and calls back
Android calls the Lua function, transmits the class as a parameter, and then calls back the class function in Lua.
Call lua
MLuaState = LuaStateFactory. newLuaState (); mLuaState. openLibs (); mLuaS
Android binder Mechanism 2 (client and common server), androidbinder
Before talking about the communication between them, let's take MediaServer as an example to see what common Server processes are doing.
Int main (){...... // Obtain the ProcessState instance sp
Defaservicservicemanager () has been introduced in the previous article.MediaPlayerService: instantiate () is implemented as follows, that is,
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