compass application for android

Introduction and basic usage of AsyncTaskFor details about the introduction and basic usage of AsyncTask, refer to the official document and Android Development Notes: multi-threaded AsyncTask. A problem caused by AsyncTaskLast week, I encountered an extremely strange problem. A small function downloads an image from the network and puts it in the ImageView. It is implemented using AsyncTask, and its logic is also very simple, only extract the input

Objective It is well known that in the development of Android applications, there may be demand, such as: when the promotion to the application market to download applications, jump to the application market to their own application scoring, jump to the application of the m

the development and present situation of 1.Android mobile phone platformAndroid founder Andy Rubin. 2008.9.22 first Android Phone: t-mobile G1 2010.1.7 Google's first co-branded mobile Nexus One (HTC G5)architecture and features of 2.Android mobile phone platformThe bottom layer is built on Linux and the Android system

I. Architecture of Android applicationsThe Android software hierarchy can be categorized from top to bottom: l Applications ( application) l application Framework (appliciation Framework) l Various libraries (Libraries) and Android Runtime Environment (r

We know that the various modules of the Android system provide very powerful functions (such as telephones, power supplies and settings, etc.), and by using these features, the application can perform more powerfully and flexibly. However, the use of these features is not unconditional, but requires some permissions. Next, we'll start by explaining another very important point of knowledge-the

Http://hi.baidu.com/fountainblog/blog/item/0dc1af7e714d9c210dd7dade.html Version control is an important part in the process of program upgrade/maintenance.You need to know the version of the application installed on the device and the versions that can be upgraded. Other applications-including other programs you release-need to query the system for the version of your application to determine the compati

This article describes a method for Androdi to get a list of mobile apps, such as acquiring software properties, sizes and application paths, application names, and so on, for Android apps, and getting all the installed Android apps, including those uninstalled, but not clearing the data, At the same time, when obtaini

Air Android Application Development practicesBasic InformationAuthor: Qiu Yanlin [Translator's introduction]Press: Machinery Industry PressISBN: 9787111391777Mounting time:Published on: February 1, August 2012Start: 16Page number: 1Version: 1-1Category: Computer> Software and programming> mobile development> android For more information, air

[Selector] Getting started with Google Android development and practices This article describes the architecture of Android, the composition of Android applications, and the logical composition of Android applications. 1. Android Architecture The software hierarchy of

Android Application summary, androidapplicationApplication configuration global Context Step 1: Write a global Singleton mode. MyApplication inherits from Application overwrite onCreate, and instantiate Application in this method. Step 2: configure the global Context Step 3: Use. Access Context by class name when usin

Recently, I encountered the application class in the project. I didn't know how to use it at first. I learned how to use it. For example, if you want to use global variables in the entire application, static variables and public variables are generally used in Java. If you use such global variables in Android, they do not conform to the framework architecture of

Android -- Context (Application) Interface to global information about an application environment. this is an abstract class whose implementation is provided by the Android system. it allows access to application-specific resources and classes, as well as up-callfor

Reprinted please indicate the source:Http://blog.csdn.net/qinjuning Pass the first partObtain Application (Package) Information in Android ----- use of packagemanager (1)>For packagemanager and The node Information Class xxxinfo defined in androidmanife. XML has some knowledge. This section describes how to obtain the size of the installation package, including the cache size (cachesize), data size (data

Android applications are written in the Java programming language. The Android SDK tool compiles your code-along with any data and resource files-into a apk:android package, which is an archive file with an. apk suffix. An APK file contains all the content of an Android app, which is a file that is used by Android-base

Use localized Resources How to create default Resources Put the default text of the application in a file with the following position and name: res/values/strings.xml Text strings in RES/values/strings. xml should use the default language, which is the language that most application users are expected to speak. The default resource that must be set also includes any other descriptive and layout resources an

noun explanation Package properties: In the Androidmanifest.xml file. Package Name: The application's bundle name. Application ID: The ApplicationID property under the module Defaultconfig block. Set Application IDEach Android application has a unique applicat