Android study note 01

1. I have watched some Android development over the past few days and used eclipseCodeFor some minor issues, please note here. Set the shortcut key (-> window-> preferences-> General-> keys-> after searching, press the shortcut key you want to set

Android study note _ 11. Service preliminary

1. Service is an invisible applicationProgramComponents, without graphical interfaces, are usually used to process time-consuming operations. You can use service to update contentprovider, send intent notifications, and start system notifications.

Android study note 09. WiFi network operations

1. Concepts 2. WiFi Nic status Wifi_state_disabled: WiFi Nic unavailable (1) Wifi_state_disabling: WiFi is being disabled (0) Wifi_state_enabled: WiFi Nic available (3) Wifi_state_enabling: the WiFi Nic is on (2) Wifi_state_unknown:

Android sdk_int and version

  Int 1 (0x00000001) Base October 2008: the original, first, version of Android. Int 2 (0x00000001) Base_1_1 February 2009: first Android update, officially called 1.1.

Android Study Notes 02: androidmanifest. xml source code

Androidmanifest. XML isProgramThe required files are located in the root directory of the entire project, describing components in the package, such as activities, services, content providers, intent receivers, and their respective implementation

Android study note 26: use of the image switching control imageswitcher

In Windows, to view multiple images, you can use the "Windows photo viewer" to switch between "previous" and "Next" to browse multiple images. In Android, you can use the image switching control imageswitcher to browse multiple images. The

Android Study Notes 42: XML file parsing (DOM Mode)

In the previous blog titled Android study note 41: XML file parsing (using the sax method), we learned how to use the SAX Parser to parse XML files, to obtain the useful information we want. This blog article describes how to use the DOM parser to

Android Study Notes 03: problems encountered during the learning process and Solutions

I encountered a lot of problems in the process of learning Android development. Fortunately, I finally got the solution through online queries. Now, I want to sort out some of the problems I encountered during the android development process and the

Android Study Notes 40: broadcastreceiver of four Android Components

Android applicationsProgramThe four components are activity, service, broadcastreceiver, and contentprovider. Activity, service, and contentprovider have been described in previous blog posts, as follows: (1) activity: Android Study Notes 38:

Android Study Notes 09: simple application of paint and canvas

In Android, you need to use the graphics class to display 2D images. Graphics includes canvas, paint, color, bitmap, and other common classes. Graphics supports drawing points, lines, colors, 2D ry, and image processing. 1. Color There are

Android Study Notes 38: Activity of four Android Components

Android applicationsProgramThe four components are activity, service, broadcastreceiver, and contentprovider. This article will give a comprehensive summary of the activity. Service and broadcasereceiver will also be introduced in the subsequent

Android study note 37: Using content providers to share data

Android provides five data storage methods: (1) files: Use fileinputstream and fileoutputstream to operate files. For details about how to use it, refer to the blog "android study note 34: Using files to store data". (2) shared preferences: used

Android source code explanation 01: Download Android source code

The android Source Code contains many things, such as embedded applications in the Android system.Program(For example, photo taking, calculator, calendar, dial, etc.)Source codeThe sources of various Android SDK tools (such as ADB and

Android study note 48: Use handler to update the UI in real time

In Android, Android applications are implemented mainly through messagequeue, logoff, and handler.Program. Among them, the messagequeue class is used to describe the Message Queue; The logoff class is used to create the message queue and enter the

Android study note 35: using shared preferences to store data

Android provides five data storage methods: (1) files: Use fileinputstream and fileoutputstream to operate files. For details about how to use it, refer to the blog "android study note 34: Using files to store data". (2) shared preferences: used

Android study note 47: using the httpclient interface for network communication

In Android, we can use standard Java interfaces to complete Android applications.Program. However, in actual development, more complex online operations may be required. Therefore, the Android platform provides the Apache httpclient interface, it

Android study note 46: submit data using post

In Android, the standard Java interface httpurlconnection and Apache interface httpclient are provided, which provides rich support for HTTP programming on the client. Get and post are the most commonly used in HTTP Communication. GET requests can

Android study notes 44: JSON data parsing

JSON (JavaScript Object Notation) is a lightweight data exchange format. It uses a language-independent text format and provides an ideal data exchange format for Web application development. This article describes how to create JSON data on the

Android Study Notes 43: XML file parsing (PULL mode)

There are many ways to parse XML documents. Apart from common Sax and Dom methods, you can also use the pull that comes with Java to parse XML documents.   1. Use the pull parser to parse XML documents The pull parser runs in a similar way as

Comparison between Android and IOS

What about Android and iOS? Which one should I invest in first? I have been asked this kind of question many times. I just need to consider the IOS version for my project. I simply did some research, so I had this article (this article does not

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