iOS development: Multithreading with GCD

gcd

In addition to the previous article on the nsthread thread, there is also a gcd (Grand Central Dispath), a new Apple-developed solution for multi-core programming, leveraging CPU resources to put all tasks into a single task queue for scheduling.

Vmstat,iostat,sar command Explanation

procsR: Number of processes waiting to run B: number of processes in non-disruptive sleep state w: number of running processes that have been swapped out. This number is calculated by Linux, but Linux does not run out of swap spaceMemorySWPD:

IOS9 Replaykit Recording Video

Monkey original, welcome reprint. Reproduced please specify: Reproduced from COCOS2DER-CSDN, thank you!Original address: http://blog.csdn.net/cocos2der/article/details/50260873IOS9 Replaykit video recording, API is very simple, the following is the

What's the use of Mapper's namespace in MyBatis?

Original: Http://zhidao.baidu.com/link?url=ovFuTn7-02s7Qd40BOnwHImuPxNg8tXJF3nrx1SSngNY5e0CaSP1E4C9E5J6Xv5fI9P_ dtmqhebrgoid9bk9icy1o9h6o21l6rhrawj_km3---------------------------------------------------------------------------------------------------

Ios:how to make AutoLayout work on A ScrollView

Ios:how to make AutoLayout work on A ScrollViewPosted on June 11th, 2014Ok, I ' ll admit. I ' ve been seriously struggling with AutoLayout ever since it ' s been introduced. I understand the concept, and I love the idea of it, if I actually do it,

>=ios8 in-app jump to System Setup interface-openurl

After iOS8, Apple allows you to jump from within the app to the system settings, but the debug results indicate that you cannot jump to a specific setting, and before using it, you should determine whether you are currently able to jump to system

CGFloat, Cgpoint, Cgsize, and CGRect in iOS development

1. Data type:cgfloat: Basic types of floating-point valuesCgpoint: Represents a point in a two-dimensional coordinate systemcgsize: Represents the width and height of a rectangleCGRect: Represents the position and size of a rectangletypedef float

Android Custom Controls

Create a new layout file for the custom control in layout (typically the LinearLayout layout) code as follows: Android:layout_width= "Match_parent"android:layout_height= "50DP"android:background= "@mipmap/icon_title" >Android:id=

Problem with iOS9:-canopenurl:failed for URL

My workaround is to:Find Lsapplicationqueriesschemes in Info.plist, then add key belowsuch as:-canopenurl:failed for URL: "Momochs://xxxxxxxx"Just add momochsAfter adding:lsapplicationqueriesschemes sinaweibo sinaweibosso weibosdk weibosdk2

Accelerate Android Studio/gradle Build

has been developed using Android studio for more than a year, as the project grows, relying on the increase of the library, the construction speed is more and more slow, now the slowest 6 minutes to build a release of the installation package, find

[IOS] Fix the warehouse version of Pod search below the GitHub warehouse version method

Shimen the main contribution, respect the work of the author, please do not reprint.If the article is helpful to you, you are welcome to donate to the author, support the Shimen, donate the amount at random, ^_^I want to donate: Click

Control properties for iOS learning notes

1. Text boxSet Password properties: Secure Text Entry tick;Set text box with clear properties: Clear Button =is always visible; The default is without the Purge attribute: never appearsSet text box by default with the Text property: placeholder=

Android Check Input

In the development process, you will often encounter such requirements: There are many input controls, and so on all the input is valid, the button will automatically become enabled state, in order to continue the next operation.The following is a

Android Tips Toast

Reprint Please specify source: http://blog.csdn.net/droyon/article/details/42009015We could use Androd to provide toast control, but in the process of using it, we made a lot of toast requests, found toast, and even if we quit the app, the toast

ios-Development Diary 24-uitableviewcell Click two times to jump to the solution

Today when writing the project found that the first time the cell click on a row, and so on click the second time will jump, in the online search the next solution, the original is in writing code when the automatic completion of the cause, in

JS Component Development-Mobile-side region selection control Mobile-select-area

Mobile-side Region selection control Mobile-select-areaAs a result of the previous [JS Open source Component Development]JS mobile phone linkage Select Region imitation iOS open source git is very popular, so I have some optimizations, including the

IOS8 above using corelocation positioning

1, need to call the following function before using corelocationIOS8 has made some modifications to the positioning, including the method of locating authorization, Cllocationmanager adds the following two methods:(1) Always allow access to location

iOS Basics (ii) common usage of--uiimageview

Uiimageview is a control that displays a picture on the interface, the picture in Uiimageview should first be loaded into uiimage, and then used in other ways to use the uiimage.There are two methods of creating Uiimageview:One is to use UIImage to

How Android developed to make Tabhost's tabwidget on the bottom of the screen

Change the first linearlayout in Tabhost to Relativelayout. and add android:layout_alignparentbottom= "true" in TabwidgetXmlns:tools= "Http://schemas.android.com/tools"Android:layout_width= "Match_parent"android:layout_height=

Practical tips for iOS development-pop-up app download tips in the phone browser header

Practical tips for iOS development-pop-up app download tips in the phone browser headerThis article describes its simple use:the first step is to set up a local access server.Open a local terminal, create a new folder locally, and store the test

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