Mobile Develop

PLC How to communicate with the mobile phone, so that you can timely understand the parameters of the PLCFirst, if the alarm points are not many, you can choose Dtp-re+b SMS Control terminal. Can be directly connected to the PLC switch output,

Reprint Please specify source: http://blog.csdn.net/zhaokaiqiang1992When doing the app, if there is a user system function, then generally can not escape this demand, is to set the user profile picture, and set the Avatar, but also from the photo

Debug program, the dynamic request for memory with free or delete when the program crashes, jump out of the following dialog box:Click Retry to locate the specific CRT source code section: _asserte (_CrtIsValidHeapPointer (puserdata));1, Reason

Recently, when using the view inflate (context context, int resource, ViewGroup root) method, a bit of trouble was encountered on the third parameter root.Custom columns are typically loaded when you write the adapter of a ListViewNULL );...

// ---------------------------------------------------Reference: South Peak son's technical blog Http://southpeak.github.io//----------------------------------------------------OC language is a dynamic language that puts a lot of static language in

First, new features size class introductionWith the release of the IOS8 system, a new page UI layout concept appears, and this new feature will subvert the UI layout, including IOS7 and previous versions, which is the size Class. The size class with

JNI, a technique used to develop a local C function library. A bridge for linking Java and C or C + + languages. In the development of some Android projects, we need to use this technology. Then the nonsense is not much to say, get into the

article editing: Android Studio Chinese Group-SadieyuALT + ENTER import package, auto fixCTRL + N Find classCtrl+shift+n Finding filesCtrl+alt+l Formatting CodeCtrl+alt+o Optimizing imported classes and PackagesAlt+insert generate code (such as

Get used to using Eclipse to launch Android, and want to reduce the shock when you cross over to Android studio.But want to use Android studio to open the Eclipse case (direct Open is not allowed),And don't want to put the eclipsec of Android studio

Collated and summed up 9 Android development errors and solutions, together to explore progress!1. If your project's R file is missing , you can try to change the version number in the Save, R file is not generally the layout text error caused.2.

Before the shape of the time, do round corners, gradients and other effects are dependent on the picture effect; If you are unfamiliar with PS, it will take a lot of time to do the pictures alone.Nonsense not to say, the summary of the contents of

Timestamps are like 1377216000000 This format we often use in the MySQL database to convert time to timestamp or timestamp to date format, let me introduce the wirelessly timestamp operation conversion method.First, the principleThe principle of

One of the most common cases of memory leaks in Android is the long-term retention of references to context, especially activity, so that activity cannot be destroyed. This also means that all the member variables in the activity are not destroyed.

Collect some information, focus on the preparation, in case of a rainy, by the way also share, if feel good, trouble point a praise, feel no meaning can directly drift past, quack ~ ~ ~Android parsing a more detailed articleHttp://blog.csdn.net/t12x3

Record1. HTTP request Type:Get: Get resources by requesting URLsPost: Used to submit new content to the serverPut: Used to modify a contentDelete: Used to delete a contentOptions: To view the performance of the serverTrace: For remote diagnostics

Android Development most common examples of finishing----(1) Custom button implementationFirst, ActivityMainactivity.java Source:public class Mainactivity extends Activity {@Overrideprotected void onCreate (Bundle savedinstancestate) {super.oncreate

This time in the development of Android, found that the custom drop-down box has a number of ways to achieve, I introduce a popupwindow+listview way, to achieve more flexible. Effect:Look directly at the core code:Java code Get text box

Demand: Input: File Object Output: String object (Mimel type) Implementation steps:1. Get the extension to get the fileprivate static String getextension (final file file) {string suffix = ""; String name = File.getname (); final int idx =

A simple three-tier architecture written using the dapper Relational object mapper.Dapper:stackoverflow in the use of a miniature ORM, the framework of the overall efficiency of the high, lightweight ORM framework. There are more extensions on the

This is a force of open-source projects, a force of people to organize the ~ ~ ~ Let us cheer up ...1.git Tutorials:http://www.liaoxuefeng.com/wiki/0013739516305929606dd18361248578c67b8067c8c017b000Learn the things you can not understand to follow