Mobile Develop

It is often necessary to determine whether a string variable is empty, and a small test was made today.Stringutils.java:Package Com.yx.equipment_collection.utils;import Android.annotation.suppresslint;import android.text.TextUtils; Import

Using Baseexpandablelistadapter, you can implement so-called collapsible lists, such as the ability to group friends in QQ.Based on the Expandablelist usage based on the baseexpandablelistadapter extension, there are two main types of popular online

The database used in Android is an open source database SQLite database, the following is the main detailed introduction of the use of SQLite:An Introduction to SQLitewhen we write database applications, we need to consider the problem: because the

============ Problem Description ============Implement the user login function, get the user's name (username) and password (password) in the mobile client, and then query the user on the server side, how should the query statement be written?

One, the directory structure of the Android programOpen the HelloWorld project we created last time, we will see a directory structure, this is the Android program directory, the approximate role of these directories are as follows: SRC:

Android language switching process Analysis2014-02-27 18:13 1207 People read comments (0) favorite reports Language switch Android language switch Android Change languageRecently in a bug, the system switch language, the original back to the

Android apps are generally uploaded to the market after development. The release of the time to face a variety of markets, we call the channel. Now that we are uploading the market, we may need some data analysis for each market: for example, which

namespaceyournamespace{/// ///Uses The Name value of the Columnattribute specified, otherwise maps as usual. /// /// The type of the object is this mapper applies to. Public classColumnattributetypemapper: fallbacktypemapper {

/** * Get the current screen brightness mode * screen_brightness_mode_automatic=1 to automatically adjust the screen brightness * screen_brightness_mode_manual=0 To manually adjust the screen brightness */priv ate int getscreenmode () {int

Cocos2dx Android on the start Page settings are almost the same, read some information on the internet, a lot of people are re-get an activity as the start page, this is no problem, but in cocos2dx Android on the middle there will be a long black

The actual project development process, often encountered the following scenario: the different application components of the control has a certain degree of correlation, wherein the user to the latter of the operation will cause the corresponding

Install MySQL The last step of the "Apply security Setting" error appears as follows:The security settings could not being applied to the database because the connection have failed with the following error.Error Nr. 1045Access denied for user '

============ Problem Description ============Query statements do not spell, please helpIn the Nt_tasks table[F_VC_JIESSJ] Datetime[F_VC_RENWSX] CHAR (30),The F_VC_JIESSJ field indicates when the task was receivedThe F_vc_renwsx field represents the

Reference BlogDraw to PDF to enable the PDF graphics context, the PDF graphics context is created in a way that is similar to the bitmap graphics context, and one thing to note is that you need to create a paging when you draw the content to the PDF,

if reproduced, please declare the source: Time of the Sand: http://blog.csdn.net/t12x3456 (from the sands of the CSDN blog)Overview:With the continuous iteration of the application, the volume of the application is increasing, the project becomes

To move tempdb as an example:--------------------------------------------------------------------------------------------------------------- ------------The first step:Use ALTER DATABASE modify file to specify a new physical file

For Android Double-click event Judgment, the official has given the solution, mainly using the following classes or interfaces: Gesturedetector,ongesturelistener,ondoubletaplistener, Gesturedetector.simpleongesturelistenerFor their introduction and

Before drawing an image, you first need to get a graphical context object (CGCONTEXTREF), and a cgcontextref stack is maintained in the system before the DrawRect method call of the UI control. A graphical context object is created for the current

(Transferred from: http://blog.csdn.net/goodshot/article/details/11529731)the role of folders in Android projects1. SRC: Store all the *.java source programs.2. Gen: Save the path for the automatically generated code file for the ADT plugin, and the

App promotion industry has a sentence called "Channel for the King", mastered the channel is to master the pre-promotion of the first work of the app. How to choose the channel which is suitable for our promotion channel?What are the app promotion