iOS Development Learning notes-creating and initializing objects

creation and initialization of objects in Objective-c(Allocating and Initializing Objects)(the main content comes from the "allocating and Initializing Objects" of Apple's ebook "The Objective-c Programming Language"). Ebooks can be downloaded from

iOS UIWindow incorrect use results in the inability to receive motionended (Shake) function

Today, when you run the program for the first time, you encounter a problem-(void) motionended: (uieventsubtype) Motion withevent: (uievent *) eventfunction cannot be called, the second time is good. After 1 days, I finally found the reason.At the

Android Note (32) communication between Android threads (four) The main thread sends a message to a child thread

The previous example is that we process and send messages in the child thread (workerthread), then get the message in the main thread (UI thread) and modify the UI, so we can not send the message from the main threads, the child thread receives it?

Investigate the evolution of the Android development environment

This is the first time contactAndroidDevelopment, deliberately online search video for their own knowledge supplement, think that the video did very well, fromAndroidthe development process and some basic common sense are very detailed, but also

iOS essay-record My recent video development problems

Summary of some errors in video development using Mac mini devicesThe recent real-machine testing, found that the video true function point of the broadcast, the simulator crashed in main, and there is no crash information, which makes me very

Log4j:warn No appenders could be found for logger

Http://blog.sina.com.cn/s/blog_5f7d1a610100ebph.htmlWrite my solution directly:Under src , create a new file named log4j.properties content as follows:# Configure logging for testing:optionally with log fileLog4j.rootlogger=warn, stdout#

Android Surfaceview Detailed

Surfaceview inherited the view, but we don't need to implement its draw method to draw ourselves, why? Because it has a big difference from view, view is in the UI thread to update itself, while Surfaceview in a sub-thread to update itself, which

Error Configuring application Listener of class this kind of thing

I have tried various methods to find the foreigner there, some say jar package conflict, some say configuration problems.But you have to know that you can not find the jar under LIB, the dependent library is not published together ....Right-click on

Dp:apple catching (POJ 2385)

            How Cows eat applesThe main problem: a cow called Bessie, can eat apples, and then there are two trees, apples on the tree will be dropped one minute, the cow one minute can be in two trees to eat apples (and do not eat on the ground),

Unfortunately, Apple, the original designer does not use a tablet computer

Note: The English version of this article comes from the connection, on the feedly there is more than 10K Ctr. The Chinese version is compiled by Heaven Zhuhai Branch Rudder. Apple released last week in San Francisco, using Adobe's products to

Mobile Front End Series – Mobile page pit and pit tips

# # Video tag out of document flowProblem Description: Label's parent element (ancestor Element) after setting the transform style, the label is detached from the document flowTest environment: Some Android modelsWorkaround: Do not use the Transform

IOS9 workaround for HTTP not working properly

Today's upgrade Xcode 7.0 found that network access failed.Output error message The resource could not being loaded because the APP Transport Security policy requires the use of a secure connection. After Google verified, IOS9 introduced new

Using the Mybatis3--mapping file method

1.pom.xml Environment Construction Reference http://my.oschina.net/u/555061/blog/5074742. Give the directory structure,3. Unlike the annotation method, the Usersmapper.java below the DAO package is no longer annotated,Package Com.xuebaosoft.mybatis3.

The Android Socket client

Receive data do not use ReadLine (), with Read ()Socket msocket = new socket ("192.168.1.100", 8888);DataInputStream dinput = new DataInputStream (Msocket.getinputstream ())Read the data sent from the service side:int length = Dinput.read

iOS tamping: runloop

Objective: To summarize runloop and its impact on our daily development in a concise and understandable language.1. What is RunloopRunloop is a thread-related mechanism that can be simply understood as a loop. Wait for the event in this loop, and

Mobile-developed pit "continuously updated ..."

Now everyone is basically using a smart phone, seemingly mobile phone browser is also relatively advanced, but also basically webkit kernel, at first blush, as if to see the hope ... However, the mobile side of the pit is not less than IE, and

Android development----Underlying driver development (i)

Driver overviewWhen it comes to Android drivers, it's Linux-driven. The Android kernel uses the Linux2.6 kernel (some Android code has been recently included in Linux 3.3). But Android does not completely copy the Linux system kernel, in addition to

MVC WCF concurrency hint, store application, verify that there are users in action

System.Web.HttpContext HttpContext = System.Web.HttpContext.Current;Hashtable departmentsalary = (Hashtable) httpcontext.application["Departmentsalary"];Try{if (departmentsalary! = null && departmentsalary.containsvalue (KEYID)){Throw

1PX border on "Retina" phone

1 pixel border, twice times the screen is 2 "placeholder", 3 times times the screen is 3 "placeholder", but the designer will have 1 "placeholder"1 . Content H1:after,2 . Content H2:after {3border-top:1px solid #bfbfbf;4Content: ';5

Lan Yi iOS Training log 14 test day and test summary

Yesterday the exam, the morning teacher gave the topic, we do. The afternoon explained each question. There is really a leak to fill the feeling, some of the details of the place is ignored by their own exposure.The first is the exam topic, as

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