android button change icon by code

Introduction android development (change)

Environmental structures Before you begin, you need to prepare the following environmental and procedural Necessary Microsoft Windows XP / Microsoft Windows Vista operating system Android SDK 1.1r1 Java Development Kit (JDK) v6.0 or above eclipse-jee-gany

Android Developer's Guide - two-dimensional graphics

Two-dimensional graphic 2D Graphics Android offers a custom 2D graphics library, be used to draw graphics and animation. Your package will android.graphics.drawable and android.view.animation find these general categories. This paper briefly describes how

Android combines the interface of the Sqlite database to learn to do add, delete, change, check. Operation

In a previous blog has been done on the SQLite database package, combining the blog of this blog do interface operation. Check out the data in the database using ListView display in the interface and increase the menu prompts on the data to do new and del

Android Resource introduction and use of

Original Source: http://android.blog.51cto.com/268543/302529 1. Related introduced in the Android project folder inside the folder, the main resource file is placed inside the res folder. assets folder is stored not compile the native file processing, the

Android TitleBar custom title bar layout

http://www.blogjava.net/Green-nut/articles/332617.html?opt=admin Android TitleBar custom title bar layout Many users find themselves TitleBar Android program title bar area is very monotonous, if you want to personalize some of the following methods can f

Android Development FAQ

Android Getting Started FAQ 1, Q: What is Android? A: Android means the original meaning of the term "robot", is also Google on November 5, 2007 announced the open source Linux-based mobile operating system, the name of the platform by the opera

Android development of a number of important points online

From network 1. Android Single Instance Methods We all know that Android platform is not the task manager, and defenders within the App Activity history stack to achieve a window display and destruction, for the conventional view is from the shortcut to r

Android UI Learning - Menu

Android system, there are 3 types of menu: options menu, context menu, sub menu. press the Menu button options menu will be displayed for the current Activity. It consists of two menu items: Because the options menu in the bottom of the screen can only di

Department of famous Gate Android (9) - Database support (SQLite),

Department of famous Gate Android (9) - Database support (SQLite), the content provider (ContentProvider) Author: webabcd Android describes the use of SQLite, ContentProvider Database support (SQLite) - Android development platform provides the operation-

android relative layout of the use of small note

android's layout has several, linear layout, the absolute layout, form layout, relative layout, pin layout (you can do animation is an element of a needle, needle means that the screen per second x second change in the number of elements) commonl ...

Examples of learning HelloAndroid Android development

After the recent completion of the project, idle boredom, the want to learn C, C + +, on very poor, and too hard, used java development, I recall my colleagues, do not dry, learning Android, then began to study their development of Android . This article

Documents on the Chinese android

What is Android? Android is a specialized set of software for mobile devices, which includes an operating system, middleware and some important applications. Beta version of the Android SDK provides the Android platform using the Java language for Android

Quick Start: Ophone and Android Tutorial

• Quick Start: Ophone and Android Tutorial • http://developer.51cto.com 2009-09-25 10:24 zhang_xzhi_xjtu JavaEye blog I want to comment on (0) This paper aims to remove the build environment of a 5-minute Quick Start, and provide a simple program cod

Android resource file

Resources are used in your code to the package at compile time, and your application into additional files. Android supports a wide variety of documents, including XML, PNG and JPEG files. XML file describing the format of the decision on its content. The

Department of famous door Android (9) - Database support (SQLite),

Department of famous door Android (9) - Database support (SQLite), content provider (ContentProvider) Describes the use of Android SQLite, ContentProvider Database support (SQLite) - Android development platform provides the operator related SQLite databa

Android UI overview of the basic concepts of user interface development

Android UI Programming Interface Overview In this paper, the user interface of the Android UI open some of the basic concepts, not to do in-depth explanations, but you can quickly browse Android open often involves some basic concepts and elements. 1, int

Android Study Notes (5) - Android - HelloWorldDemo

Project directory structure: HelloWorldActivity.java Listing Helloworldactivity.java code package com.oristand; import android.app.Activity; import android.os.Bundle; public class HelloWorldActivity extends Activity ( / ** Called when the activity is

Android custom dialog

Andoid Dialog 1, AlertDialog, with 0-3 buttons, you can put options, check one box, so as to form the proposed domain user can interact. 2, ProgressDialog, displays a progress bar or progress of the ring. 3, DataPickerDialog, select the date of the dialog

[Collection] Android permission access (with permissions list)

Network lack android permissions list, but few will put together a list and use, so hereby summarize Need to define the appropriate permissions AndroidManifest.xml (for internet access as an example), as follows: Xml Code <Uses-permission android: name

Android development environment on the Construction of Methods

Transfer from: http://blog.csdn.net/ecaol/archive/2010/03/24/5410915.aspx This method is suitable for Android SDK 2.1 application development environment Install JDK • In the java.sun.com download and install • JDK in the "System Properties" and

Android Development How to use Google map

Since google 06 Since it entered China on a map, moving developments in the field several times the speed of growth every year basically. Android platform in the latest related applications, if they can understand our google map will be a great help devel

android application rules (to)

Process and life cycle Android applications are written using Java programming language. Compiled Java code - including any data the application needs and resources - is Android aapt tool package to package, use the. Apk package file suffix. This document

android first day (a modicum of success, scattered points)

Good post, go here recorded. Original Address: http://topic.csdn.net/u/20101021/16/B605909C-56F8-41A0-B209-269FEDD51841.html Of: ptzxzc 1. The sdk copied to the android-sdk-windows \ platforms the next. If there is a network, then on android-sdk-windows a

Android AppWidget a simple tutorial

Android Application Development program application in addition, there is a Widget application. A lot of people will develop procedures for application and not developer Widget application. This post is to help you learn how to develop Widget application.

Android system, the search dialog (floating search box) use

When you need in your application to provide search services, your first thought is to put your search box where it? Search by using the Android framework, the application will display a custom search dialog box to handle the user's search reques

Tour Links Android development: view layout and practice of several

Our applications run on the Android principle and layout files can be described with a deeper awareness and understanding, and with the "Hello World!" Program to practice proved. Continue to develop in-depth Android trip, it is necessary to solv

Links Android Development Tour: See Hello World!

After several articles on the principles of Android applications to talk, now we will probably look back. First, we use a Hello World program introduces Android application's directory structure, including the src folder, gen folder, Android x folder,

Android security and permissions ① ---- ShareUserId and file access (File Access) - Security and Permission

About SharedUserId summary: We know that in general each app has a unique linux user ID, the permissions to be set so that the application's files are only visible to the user, only the application itself can be seen, and we can make them for other vi

Android PreferenceActivity study notes

In Ap sometimes need to set some configuration parameters, these parameters through the configuration file. To set these parameters need to provide a UI, for this demand, Android provides a preferenceActivity. PreferenceActivity by reading the pre-defined

Android to improve third of SurfaceView (below)

SurfaceView briefly introduced the use of, this time to introduce SurfaceView use double buffering. Double-buffering to prevent flickering animation achieved a multi-threaded applications, based on double buffering to achieve SurfaceView very simple,

Android development of learning four. Activity

Four, Activity 4.1 Activity Activity is the application of the entrance. Responsible for creating the only window (setContextView (View)), and user interaction and so on. 4.1.1 Basic Usage First define a class inherited from android.app.Activity, the file

Android Development of a simple example

The Android Eclipse plug-ins by (ADT) can easily add a new Android project. List of engineering structures and the role of the main directory as follows: (1) Src: storing program source code, nothing to say. (2) Gen: store the java compiler automatically

[Android2D fourth game development] in-depth Animation, the still used in SurfaceView Android-Tween Animation!

Himi original, reprinted, please specify! Thank you. Original Address: http://blog.csdn.net/xiaominghimi/archive/2011/01/04/6116089.aspx Before the fourth game development 【】 Android2D I'll share in a piece of graph 13 of the png, set the viewing area

. Android's Window class default category

. Android's default classification 2011-01-19 13:33:32 Window class to read 514 comments 0 Font Size: medium and small subscription. Android's Window class (a) Android's GUI layer is not complicated. The complexity of such similar WGUI layout

Google android on the map and text on the monitor of the examples discussed

online these days to write a variety of search code SMS monitoring service, and then returns a message with gps address and resolve gps address shown on the map a small program, but returned to the message displayed when the map a problem, my method under

Android's Window class

Android's Window class (a) Android's GUI layer is not complicated. The complexity of such similar WGUI layout and dialog-based GUI, and MFC, QT and other large frame are not comparable, or even the MiniGUI Feynman Wei Yongming than it is complex.

use of android's Menu

1. Ordinary Menu Let's look at how to achieve the simplest Menu. Activity in the primary coverage onCreateOptionsMenu (Menu menu) method. Code <! - Code highlighting produced by Actipro CodeHighlighter (freeware) http://www.CodeHighlighter.com/ -

Cloud platform programming and development (C): Creating a platform for cloud-based X5Cloud Hello World program (run on Android phones. Plates)

Cloud platform programming and development (C): Creating a platform for cloud-based X5Cloud Hello World program (run on Android phones, plate) http://blog.sina.com.cn/s/blog_85e4309c0100u7mb.html How to Create X5Cloud Hello World program (run on Android p

Chapter V Application: Hello World! - On the

Key skills and concepts l Create a new Android project. l Use the View l Use a text view l Change main.xml file l to run applications in the Android emulator In this chapter, you will create the first Android event. This chapter studies the application bu

Chapter VIII of the list. Menu, as well as other views - Next

Here is your complete AndroidManifest.xml project file: <? xml version = "1.0" encoding = "utf-8"?> <manifest xmlns: android = http://schemas.android.com/apk/res/android package = "android_programmers_guide.AndroidVi ...

Chapter VIII of the list. Menu, as well as other view - after

AndroidViews.java The final step in creating this Activity is to edit the AndroidViews.java. If you want to call from the main AndroidViews Activity in testCheckBox Activity, you must add code to AndroidViews.java. Compare the following code and your ...

Chapter VIII of the list. Menu, as well as other views - Ji

This section shows radiogroup.xml all the code. According to the guidance of the previous chapters to create a new XML file called the radiogroup.xml. Use the following code to build your files. <? xml version = "1.0" encoding = "utf-8

Chapter VIII of the list. Menu and other views - Next

Here is your complete AndroidManifest.xml project file: <? Xml version = "1.0" encoding = "utf-8"?> <Manifest xmlns: android = http://schemas.android.com/apk/res/android package = "android_programmers_guide.AndroidVi ...

Chapter VIII of the list. Menu and other view - after

AndroidViews.java The final step in creating this Activity is the editor AndroidViews.java. If you want to call from the main AndroidViews Activity testCheckBox Activity, you must add code to AndroidViews.java. Compare the following code and your cur ...

Chapter VIII of the list. Menu and other view - Following

This section shows radiogroup.xml all the code. According to the guidance of the previous chapters to create a new XML file called radiogroup.xml's. Use the following code to build your files. <? Xml version = "1.0" encoding = "utf-8

Chapter VII of the use of Intents with the Phone Dialer - in the

Activity assigned to you for the correct permissions, you first need to know what permissions you need to allocate. The correct example is the use of Dialer Activity. Access Dailer Activity managed by CALL_PHONE permission. Through the allocation of autho

Chapter VII of the use of Intents and Phone Dialer - China

Activity assigned to you for the correct permissions, you first need to know what you need to assign privileges. Correct example is the use of Dialer Activity. Access Dailer Activity managed by CALL_PHONE permission. Through the allocation of rights, ...

Task and Activity-related content - reserved ~ ~

Task and Activity related to this period of time to do a project, found that the Task and Activity master or not firm. To organize knowledge here, for easy access, there are several Flag not send to the SLC to see to understand, did not test out the effec

AndroidManifest.xml - activity details

<Activity android: allowTaskReparenting = ["true" | "false"] android: alwaysRetainTaskState = ["true" | "false"] android: clearTaskOnLaunch = ["true" "|" false "] android: configChanges =

News Application Summary

1: Press the main function 2: News and updates load 3: The progress of the implementation of Article 4: Background to broadcast news services (Service and BroadcastReceiver use) 5: AIDL use 1: Main Features: Started after news update all information, upda
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