How ORM (Object-relational Mapping Object-relational mapping) is implemented

Original link: http://blog.163.com/hzd_love/blog/static/13199988120107891854473/1. What is ORMThe full name of the ORM is the object Relational Mapping, which is a relational mapping of objects. The idea of its realization is to map the data of

Android: Implementing cross-Program data sharing

For simplicity, we continue to develop on the basis of the Databasetest project in the previous chapter by adding an external access interface to it through a content provider.Open the Databasetest project, first use the Toast pop-up in

Basics of Android App development: new features

Fragment Purpose: Switch the interface in an activity, switch the interface only to switch the contents of fragment The life cycle approach is consistent with activity and can be understood as an activity Defining the layout file as

Configure ant script to automatically pack signed Android APK under Eclipse

Although eclipse is seldom used, it is still used in old projects. A troublesome thing is to play with a signature package when it is very inconvenient. Configure Ant on the bottom record and automatically pack the process with the signature apk as

iOS Development-afnetworking

I. Request through Afhttpsessionmanager 1. Create ManagerAfhttpsessionmanager *manager = [Afhttpsessionmanager manager];2. Set timeout time, receive typeTen ; = [Nsset setwithobjects:@ "application/json"@ "text/html", @" Text/json "@"

Play and process of game frame animation for Android game development

Take you into the game development of the world game frame animation processing1. The principle of frame animationFrame animation frame animation as the name implies, a frame of a frame animation is a frame animation. Frame animation and our

Description of the Android JNI Getfieldid and Getmethodid functions

description of the Android JNI Getfieldid and Getmethodid functionsGetfieldid is to get the parameters in the Java class Id,getmethodid get the IDs of the methods in the Java class, which can only invoke parameters or methods declared as public in

iOS development-How to use an Apple certificate multiple times-Export P12 file

Why do you want to export the. p12 fileWhen we use more than three Mac devices to develop the application, want to apply for a new certificate, if in our certificate, contains 3 release certificates, 2 development certificates, you can find no

The difference between the get and post requests for IOS HTTP requests

1. Get is the data that is fetched from the server and post is the data sent to the server.2. Get is the URL where the parameter data queue is added to the Action property of the submission form, and the value corresponds to the field one by one in

Internationalization in iOS (i)

Preface: In iOS, if the language or region of the system changes, how do we make the format of the language, date, number, and currency units displayed in the app change? Here's an introduction to the simple internationalization approach in iOS:

Unable to find the wrapper "https" error resolution

PHP.ini The default configuration, the link to the HTTPS is read with file_get_contents, the error is as follows:Warning:fopen () [function.fopen]: Unable to find the wrapper "https"-do you forget to enable it when you configured PH P?This error is

The underlying principle of Windows add view in Android

One, window and WindowManagerwindow is an abstract class, its implementation is Phonewindow, creating a window is very simple, only need to create a windowmanager, window specifically implemented in Windowmanagerservice, The interaction between

Knowledge Association from the Android handler internal class to the WeakReference

Handler: General usage:The handler is used to process and get a message from the queue MessageQueue. Generally we want to rewrite Handler's handlemessage (Message msg) {} method to handle, for example, the following code:public class Mainactivity

Application of SQLite in Android

Android provides APIs for creating and using SQLite databases (application programming Interface, Application programming Interface).In the Android system, the SQLite database is managed and manipulated mainly by the class Sqlitedatabase and

Android's OnLayout, layout method explained

Http://www.2cto.com/kf/201404/291740.htmlThe OnLayout method is the layout method of the ViewGroup neutron view, which is used to place the child view. Placing the child view is simple, just rewrite the OnLayout method, and then get an instance of

Ios_sn_coredate (i) package use

Read a package CoreData article is very good, there is a basic use of encapsulation, but did not write how with TableView, I use the process of some small twists and turns, I did a demo, we can see the source of some basic use should not be

iOS Web Development (8) Implementation of File download

This article describes the file download, which includes the following: The basic principle of the original ecology of segmented download Download tasks for Nsurlsession Download using afnetworking Download tasks frequently

Ios-multi-thread Nsthread Detailed

Objectivea thread is used to perform a task, and the thread finishes executing task A to perform task B. Multithreading is produced in order to perform two tasks at the same time. I opened a video software, I opened a thread a to let it perform the

An analysis of the workflow of Android 4.4 Kitkat phone (vi) __incallactivity display update process

This article is from Http://blog.csdn.net/yihongyuelan reprint please be sure to indicate the sourceThis code is based on the MTK platform Android 4.4 as the analysis object, and Google native Aosp a little difference, please read the

Isensor APP's Camera Debug OV5642

The Isensor app is ideal for debugging a variety of cameras that have been tested through the sensor:L OV7670, OV7725, OV9650, OV9655, OV9653, OV5642, OV5640, OV5620L mt9t001, mt9m001, mt9p031, mt9v032, mt9v034, mt9d001, mt9d112, mt9d111such astoday,

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