how to program android

Parse XML file: In Android, the common XML parsers are sax parsers, Dom parsers, and pull parsers, which I'll explain in more detail. SAX parser: The SAX (simple API for XML) parser is an event-based parser, and its core is the event-handling pattern, which revolves around the event source and the event handler. When an event source generates an event, a handler for the event handler is invoked, and an event can be processed. When the event source

2017-2018-2 20165312 Experiment four "Android programming" experimental report install Android studio and install Android Studio with Hello World test and debug programCan refer to Lou Teacher's blog Android Development Simple tutorial or reference "Java and Android Developm

related components you need separately. Here, when the author installs VS2015 in Microsoft Visual Studio Emulator for Android, it is recommended that you skip this module and download the installation package installation of the simulator separately, if you install the simulator to the last failure rollback, Check to see if your computer is powered on or supports Hyper-V features, such as Win8 Home Edition. 3. The above steps can be basically done

Delphi's Android program is the native program, which is nativeactivity. Then you need to look at the principle of nativeactivity, in the Androidmanifest.xml file to specify the entry activity for nativeactivity, so that the application starts, the Java virtual machine this side open a main thread, The main thread creates an activity, which is nativeactivity, whi

the drawable directory, the layout is placed in the layouts directory, the strings are placed in the values directory, so you do not have to worry about the entire res directory mess.7. Androidmanifest.xmlThis is the configuration file for your entire Android project, and all four components you define in the program need to be registered in this file. You can also add permission declarations to your appli

There must be such a problem in the application. In the application, there are multiple activities that are redirected. These activities are all in the Activity stack. Therefore, when you press the return key, the original Activity is one by one. If we want to capture the back event and exit the entire program directly, we have to think about it. Especially after the security mechanism after 2.2 is considered. Paste the vertex code for later use. Java

I. Problem Description During normal development, we can find that many developers did not seriously solve the exit of the program. Generally, it is either a simple finish (just exit the current activity) or another method, such: 1. Method 1: first obtain the id of the current Process, and then kill the Process: android. OS. Process. killProcess (android. OS. Pro

Experimental four Android program development submission Point task:Android Stuidio Installation Test: Refer to the Java and Android Development Learning Guide (second Edition) (Epubit,java for Android 2nd), Chapter 24th: Refer to Http://www.cnblogs.com/rocedu/p/6371315.html#SECANDROID, installing

Reprint please specify the source:http://blog.csdn.net/allen315410/article/details/41444053In the actual project development, there will be a lot of anomalies directly lead to the program crash out, in the development we can view the error log through Logcat, debug anomalies, let the program safe operation, but in the development of some abnormal hidden deep, until the project was released, due to various r

First, the preface Anti-compilation means that apk files or Dex files do not function correctly through the Decompile tool, and may cause tool anomalies or crashes, such as Apktool, Baksmali, Dex2jar, Jeb, and so on, as shown in the following figure Dex2jar is not working properly. Second, DEX file format analysis At present, most of the anti-compiler tools for Android software are open source, such as Apktool, Dex2jar, Baksamli, you can easily d

(19:56:08) The code of a Common Logon interface is mainly three edittext, one checkbox, and two buttons.Http://schemas.android.com/apk/res/android"Android: Orientation =" Vertical"Android: layout_width =" Fill_parent"Android: layout_height =" Fill_parent"Android: Background

This example describes the simple Bluetooth program implemented by Android. Share to everyone for your reference, specific as follows: I will introduce the Android Bluetooth program in this article. This program is to realize the mobile phone as a computer PPT playback of t

Unity3d is a cross-platform game development engine that can use C # to develop games on various platforms, such as Windows,mac,android,windows Phone,ios,flash. Here's how to post a developed Unity3d game on an Android phone1. Installing Unity3dThis is the official website, here can download to the latest version of the Unity3d:http://unity3d.com/unity/download, installed by default on the line2. Installing

1: Install JDKThe JDK (Java Development Kit) is the Java Language Software Development Kit (SDK). Java programs cannot be compiled without a JDK.2: Install Android SDKThe Android SDK refers to the Android-specific software development kit.3: Install Android NDKThe Android ND

This article illustrates the solution to the problem of black screen when the Android program starts up. Share to everyone for your reference, specific as follows: About black screen: By default, when a program starts, it has a black screen period, because the first activity loads some data, such as initializing the list data, sending requests to the server, ge

The android program can be started through the command line in addition to the interface. So let's take a look at the specific operation method of the android command line Startup Program. There are many ways to start Android applications. You can start them using the Qui

The day before yesterday was Valentine's Day. Although I had been married for many years, my wife had always liked the romantic surprise. Unfortunately, I was a dull nerd and could not do anything that was sensational. At noon that day, I was about to go home from work. I suddenly saw someone talking about geek's Valentine's Day gift on Weibo. Although I am not a geek, I recently learned Android and my wife's mobile phone is also in the

There are actually many ways to start JAVA programs in Android, which are summarized as follows: 1. Send Intent in the Android app to start the Android appThis method is the simplest and most commonly used. I will not describe it here. For more information about Intent, see Intent technology introduction.2. Use the am command on the shell console to send Intent t

;Package = "zy. Broadcast"Android: versionCode = "1"Android: versionName = "1.0" type = "codeph" text = "/codeph">Android: label = "@ string/app_name"> After the program is installed, the system registers the BroadcastReceiver The Toast prompt is displayed when an application is installed, deleted, or replaced. Dele

Pulltorefresh is a great set of Drop-down refresh libraries that support: 1.ListView 2.ExpandableListView 3.GridView 4.WebView A variety of commonly used view types need to be refreshed, and also very convenient to use.(Download address: Https://github.com/chrisbanes/Android-PullToRefresh) Download it, import it into Eclipse, and import it into your project as a library. One, nonsense less say, pull down to refresh go. 1. Add the view you want