Mobile Develop

UIView Profile What is UIViewUIViewis a piece of the window 区域 , is all the controls in iOS 基类 , all we can see in the app is directly or indirectly inherited and UIView. We call it UIView 视图 .The role of UIView Responsible for content

First, Block The concept of:Nickname: code snippets, blocks, closures, is the Apple company added to OC in the language. function: Saves a piece of code while the program is running, and this code can be passed. application: Used for communication

Android Expandablelayout: A scalable, scalable layoutDue to the length and size of the phone screen, in some Android development scenarios, some specific minor level two operation options (such as Annie, play, pause, label, prompt, delete, new, open,

1. In the background to maintain an Android version number, every time you enter the app, on the Welcome screen, go to query the latest version number. Compare with the current version of the app.2. Place the latest app (the latest version number)

Nsnotification is notification, you can implement an object to send notifications, multiple objects receive notifications.Work Flow:Add a notification hub (singleton) to the class that needs to send notifications.Send a notification in the class

have been interested in painting, but the graphics mechanism of Android still have to bite the bullet to learnPainting is the use of paint (brush) in the canvas (canvas) to draw a variety of graphics, draw rectangles, circles, triangles and other

Android development needs to quickly locate the problem, print log on the Android screen, is a good channelBasic idea: Start Logservice read the specified log, use WindowManager to display on the screenDirectly on the codepublic class Logservice

first, querying the database in Android uses two important classes:1.SQLiteDatabase: Used to create, delete, execute SQL commands, and perform other common database administration tasks. 2.query (string table, string[] columns, string selection,

MVC is the abbreviation of model, view, controller. Android encourages weak coupling and component reuse, and the specific embodiment of MVC in Android is as follows:model: is the subject part of the application, all the business logic should be in

1, from the understanding of the basis of the user summaryOriginal: HTTP://DIYCODE.CC/TOPICS/72ServiceManager, Activitymanager, Packagemanager, *****manager all figured out?Binder's got it figured out?Did the IPC get it?Every class in the FrameWork

For system-level message notifications, Android introduces the concept of broadcast. And the broadcast in Android is more flexible because the application can publish its own broadcasts and receive broadcasts. Sending broadcasts requires the use of

In my previous blog, I discussed with you Optimized details of the operation of the SQLite database in Android. Not yet seen click here:Android Performance optimization-layout optimizationToday, continue Android Performance Optimization one coding

Android requires that all apps install digital certificates before they are installed. Android uses a digital certificate to determine the author of the app, which does not require a certificate authority to sign. The Android app often uses

Then the previous article on the Android JNI/NDK development of the basic posture native the method, as well as the native call java layer method, the previous article we have completed the compilation work, today we will learn how to call, Before

In order to be able to clearly see this effect, I do not hesitate to spend a lot of money to the crowd in the distribution of red envelopes, to see red envelopes to receive the details of the animation effect of the interface, QQ effectIn the

SummaryToday, we focus on unit testing, many people may not have heard the unit test or just heard, and no practical to practice, no relationship, today to everyone to popularize the knowledge of this area, and with everyone to practice, to

Volkswagen entrepreneurship, innovation, the Prime Minister flap arm, the internet wind homeopathy, regardless of the pig dog four feet away from the ground, the wind, the wind, after, everywhere Xiaoran, looks as if now become the world of apps,

Read and write to the plist fileGets the Path object Nsarray *patharray = Nssearchpathfordirectoriesindomains (NSDocumentDirectory, Nsuserdomainmask, YES); NSString *path = [Patharray objectatindex:0]; Gets the full path of the file

I. OverviewThis article mainly answers some problems which are worth studying in the course of studying and working in peacetime.Two. Questionswhen was the 1.DecorView created?It was created in the Generatedecor of Phonewindow.protectedgenerateDecor(

The code for the activity to be posted first:@ContentView(R.layout.activity_main) Public class mainactivity extends appcompatactivity { @ViewInject(R.id.text_view)PrivateTextView TextView;@OnClick(R.id.text_view)Private void OnClick(View view)