iOS-supported devices now have a lot of size, and it's certainly unrealistic to make a separate app for each of these different sizes, so Apple launched AutoLayout and Sizeclass after IOS8, along with the VFL interface design languageLet's start with the rotation of the iOS screen, first of all, for developers, the focus is not on the screen pixels, but the concept of a point, that is, the same size devices, different resolutions, the developers think
to the action viewBe aware that the following rules apply to the target view when adding:1. Add a constraint to the two same-level view on their parent view2. For the constraint relationship between two different levels of view, add to their nearest common parent view3. For a hierarchical relationship between the two view constraints, added to the higher level of the parent viewV. the VFL language
1. What is the
AutoLayout is also code, his background implementation is also code.At this time, I knew the language of a VFL. is a very anxious language, just drink the following: Nsdictionary *metrics = @{@ "First": @ (FIRST) @ "second": @ (second), @ "third": @ (Third), @ " Forth ": @ (Forth)}; NSString *VFL = @ "|-0-[_labriqi (first)]-1-[_labpingjun (second)]-1-[_labcankao (third)]-1-[_labresult]-0-|"; NSStr
Overview
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A tester can complete the test of copper cables and optical cables, certification and documentation Record Filing automatically calculates the optical fiber margin and passes/does not pass the test results automatically at both wavelengths simultaneously measuring the two optical fiber cables stored in copper and optical fiber cables new model: DSP-FTA440S, DSP-FTA430S, DSP-FTA420S products function high-speed network makes the optical fiber in the construction and campus network environment can
layout requirements in a wider range of scenarios. Of course, because the iPhone 5 is the same as the iPhone 4 in the screen width, it is not difficult to adapt to these technologies (I used Autoresizing before), but it will be available soon in iPhone 6, when we are about to face more complex screen adaptation, Auto Layout can help us solve this problem well. In addition, it can also solve horizontal screen switching and iPad adaptation problems.
The following is the example code of this artic
in/devCreate a device node under
......
}
From the above registration function, we can see that the registration of the v4l2 driver actually completes the creation of the device node, such as/dev/video0. And save the video_device structure pointer.
(3) video drive opening process
When the user space calls open to open the corresponding video file, such:
Int FD = open (/dev/video0, o_rdwr );
The operation structure of the corresponding/dev/video0 file is video_fops defined in/Drivers/Media/video
Use AutoLayout Note: (1) Set the translatesautoresizingmaskintoconstraints of the control to No. (2) Constraintwithitem: (Controls to add constraints) attribute: (set restricted properties such as left, right, height, width, etc.) Relatedby: (Greater than, equal to, less than) Toitem: (Second control constraint, if none, nil) Attribute: (constraint property of the second control) multiplier: (multiplier, such as 1.0) constant: (added constant); (3) When using the
Recently started an internship, not much time to update the =_=Nineth Lesson:1, the last lesson demo:dropit complete realizationHttps://github.com/NSLogMeng/Stanford_iOS7_Study/commit/cfc24c2c4300185d972cf151872d313414a48d322, AutoLayoutMore simple, please refer to the courseware https://github.com/NSLogMeng/Stanford_iOS7_Study/blob/master/Slides/Lecture%209%20Slides.pdfThe implementation of the course is visualized in storyboard, this article introduces two methods:①nslayoutconstraint+(instance
(9/18) re-learn Standford_iOS7 development _ animation, automatic layout _ course notes, standford_ios7 Course
I recently started my internship. I don't have much time to update it.
Lesson 9:
1. demo of the previous lesson: complete implementation of Dropit
Https://github.com/NSLogMeng/Stanford_iOS7_Study/commit/cfc24c2c4300185d972cf151872d313414a48d32
2. Autolayout
Relatively simple please refer to courseware https://github.com/NSLogMeng/Stanford_iOS7_Study/blob/master/Slides/Lecture%209%20Slid
At present, users and contractors have attached great importance to the certification test and acceptance of the integrated wiring system.
Not only will the user be required to have complete test reports and documents, but also the contractor will provide them on their own initiative. In the testing field, the United States Fluke Network Company (Fluke) DSP series Digital cable certification instrument has
Alternative solution of NSDictionaryOfVariableBindings in Swift, swiftnsdictionary
I haven't written anything in a few days. I have to spend some time practicing my pen and work hard ~
I recently switched from OC to Swift2. Since Swift has never been very serious, its understanding of this language is basically a ball... I have to feel that Apple is moving fast, and Swift has not yet learned yet, so it will be 2... So I realized that it could be 2 if I didn't learn it again ~~ It took some time
Autlayout relative layout, define your location based on the location of the referenced view. Assign a position on the screen by constraining the relationship between the view and the view, usually with the VFL languageThe VFL (Visual Format Language) Visual format language, which constrains the relationship between characters and characters through stringsUse autlayout must disable translatesautoresizingma
CertiFiber built-in library. This library includes the most common standards such as TIA-568, ISO 11801, 10BASE-X and 1000-BASE-SX, while also allowing you to build your own customized standards.
Bidirectional Test
Using the CertiFiber dual-optical fiber test method, when placed in a bidirectional test mode, CertiFiber first tests this pair of optical fiber in one direction, then you are prompted to switch the direction on the distribution frame or panel to test the optical fiber in another dir
width = = Blue Width * 0.5NSLayoutConstraint *redwidth =[nslayoutconstraint Constraintwithitem: Redview attribute:nslayoutattributewidth relatedby:nslayoutrelationequal toitem:blueview attribute: Nslayoutattributewidth multiplier:0.5 Constant:0.0]; [self.view addconstraint:redwidth];} 5 . Rules for adding constraintsAfter you create a constraint, you need to add it to the action view.Be aware that the following rules apply to the target view when adding:(1) For a constraint relationshi
There are days did not write things, take some time to practice lianbi, diligence desolate in the hippie ~The recent transfer from OC to Swift2, because Swift has not been used in the formal classics, so the understanding of the language is basically a ball ... I have to feel the speed of the Apple Movement. Swift hasn't learned it yet. It's 2.。 Then realize that it may be true that you don't learn 2 ~ ~ took some time to read throughout the "the Swift programming Language" finally can write som
substances.Live kill now eat, fish in the body of toxic substances often too late completely ruled out, fish parasites and bacteria are not completely dead, these residual toxins are likely to cause harm to the body.In addition, live kill now eat fish protein is not completely decomposed, nutrient content is not sufficient, taste is not the best.Suggestions:Buy live fish can use water to raise a day or two to kill, has killed the fish is best to soak in water for an hour or so, in order to mini
Overview
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The FLUKE network company's DSP column digital cable analyzer comes with different options for Cable Testing for different applications. Fluke Networks's DSP-100 is your best choice if you want to spend a little money to test whether the existing cabling system meets the standards of the Five-class cables.
You just need to tap a key and the DSP-100 will be able to verify your cabling system. Based on FLUKE'
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