Mobile Develop

The Observer pattern is also known as the Publish/subscribe pattern, and the Observer pattern defines a one-to-many dependency that allows multiple observer objects to listen to a Subject object at the same time. This subject object notifies all

Now Android Studio is already 1.x version, its function is also more and more perfect, personal feeling as still good use, now is also more and more companies to use as, easy to use is a factor, Google officially does not support Eclipse is also a

To get a layout file by reflection:protected void onCreate (Bundle savedinstancestate) { super. OnCreate (savedinstancestate); int This This . Getpackagename ()); = Layoutinflater.from (this); NULL );

imitation Apple phone address Book by letter positioning                                    B                                        Beijing               Beijing              Beijing               Beijing               Beijing              Beijing

Last time, we added local storage to the app, but we found that the collection of stores that were stored when we exited the app disappeared, but the local records were just not read. Next, let's implement this feature. /*** Get Local data*/

Why do iOS developers need to underline before variables are used?After seeing this man's explanation, finally understand, reprint to this. Link here: http://www.cocoachina.com/bbs/read.php?tid=234290In the. m implementation file, if the property is

Image compression before uploading a picture:NSData *imagedata = uiimagejpegrepresentation (Self.uploadimage, 0.75);Image by 0.75 mass compression-"converted to NSDataNSString *file_name = [Timeutil getdatestringwithformat:@

In the deployment of the server and local testing to find a strange phenomenon, running PHP program is very slow, at first thought is the reason for the speed, after the local test found that the pace is still very slow, open a page almost 3 seconds

Recently a friend wanted to go to iOS so I started to write some beginner iOS learning blogs! Also hope that the first novice friends help,! OK go to today's topic, we mainly complete the following interface display today!All right, open up Xcode a

 We are developing programs that often require full-screen display of software, define their own titles (using controls such as buttons) and other requirements, and today this is how to control the window display of Android applications.First of

From the previous article in the past only 4, 5 days, we hurry to strike the hot and finish the series of weather software development.To undertake the contents of the previous chapter using volley to achieve network communication. Returned to us is

Move cursorOn: K NK: Move up n rows 9999k or GG can move to the first line G move to the last rowUnder: J NJ: Move Down n rowsLeft: H NH: Move n columns to the leftRight: L nl: Move n columns to the rightW: Cursor moves forward with a word NW: the

The size of the image in android = The total number of images * Each image occupies the size.Android saves picture pixel information using ARGB, meaning that each pixel occupies 4 bytes.For images with a resolution of 2400*3200, loading to Android

The technical challenges facing mobile developersStart-up period Innovation-Client development, server development, testing Technology Selection :Developing a language Technology framework cloud computing pictureLarge data calculation of database

At the beginning of 2015, Google released a feature on Android performance optimization, with 16 short videos, each 3-5 minutes, to help developers create faster and better Android apps. The topic of the course not only introduces the underlying

I'm sure a lot of people have read the official document to the canvas Save (), the Restore () method is also a header fog, save () What exactly is the message saved?The answer is: the origin of the coordinate system, information about the axis

1. Why to open multi-processWhy open Android app to open multi-process, mainly have the following points: There is not enough memory allocated for a single process, and more memory is required. The early Android system allocated only 16M of

September 1st, The new advertising law formally implemented, the advertising spokesperson, advertising categories, advertising language and so on have made a series of new rules, is the most strict advertising law ever. With the implementation of

In Android development, we often use static to decorate our member variables, which is intended to allow multiple objects to share a single piece of space, save memory, or use a singleton pattern that allows the class to produce only one instance

first, their own definition of the ideaThe Tabbarcontroller in iOS is really powerful. Most mainstream iOS apps will Work.But often can not meet all the needs, therefore need to define their own tabbar, their own definition needs to the system of