autolayout

the files if they need to be restored. Every time I write this code in appdelegate, it is complicated and elegant. So apple helped developers do this dirty work in ios6, which is not bad ~ In fact, the mechanism should not be changed. It is to put the code into app startup .. 9. The auto layout autolayout function allows developers to define the UI design elements in a restrictive manner. Without the original fixed format of the UI design idea,

This article focuses on a few of the top-level uses of the summaries I've encountered (I'm sure there are a lot more advanced ones, of course). Simple storyboard in the upper and lower constraints, fixed width of the use of what is not done here to repeat.AutoLayout Automatic layout is iOS6 after the appearance, but in the beginning of a period of time people are not how to use, are first ticked off. Then, with the advent of 5s,iphone6 screens varied. Using multi-layer if to determine the size i

source of the project can be downloaded here.Create a new project and go to Storyboard, and find that the default size is either width or height:We can choose to turn the Size Class on or off in the view on the right:Because the size class is dependent on AutoLayout, you will be reminded of the following when you try to close AutoLayout and open the size class:Let's take a look at the next step and test wh

pure code development, because I am learning iOS when the use of Xib do, it is possible that I am not very skilled in xib, xib with the Windows Phone interface development of two comparisons, I'm not really interested in continuing to use Xib to open, storyboard is a technology that came out later, so I was almost always using a purely code-based approach to developing iOS interfaces.Pure code is developed at fixed resolutions or is a good choice, but it is a bit of a struggle to meet a rotatin

1. Basic Concepts Before the appearance of iPad and iPhone 5, iOS devices only have one size. We only need to consider the device direction when making screen adaptation. Many applications do not support redirection. In this way, there will be no screen adaptation work. With the launch of iPad, iPhone 5, and the next iPhone 6, the screen size has become an object to consider. Before ios7, when creating a UI for an application, especially for the universal application, we always first think about

Today, I made a small ScrollView example (my environment Xcode5.0.2 IOS7), and found that the scrolling fails. Even if the contentSize of scrollView is set, I did some research, finally, the solution was found: Before ios6, because Xcode does not have the Autolayout mechanism, you can directly use scrollView and set its contentSize to scroll normally after ios6, because Xcode introduces the Autolayout mecha

. MasonryIn the IB era, if you're still using the code, the absolute layout is too low. With Apple released IPhone6, IPhone 6 Plus. IOS devices will have an increasingly rich screen size, and it's not possible to make a layout based on each size. Therefore, it is necessary to use AutoLayout. In storyboard, it can be very convenient to use AutoLayout, but in order to better co-development, some companies are

Shortcut keys:1. Storyboard SkillsWhen you want to select the element you want directly in the view, but it is difficult to directly select the elements superimposed on a view, then when you hold down the shift and control keys on the keyboard and then click on the element you want to select, a window pops up. The above lists all the elements that exist under the position of the mouse click, and then you go on to make a selection that will change the simplicity of the exception.Reference: 30, st

VFL language Introduction:What is the VFL language? The VFL full name is visual format Language, which translates to "visual formatting language" .The VFL is an abstract language that Apple has introduced to simplify AutoLayout codingexample of the VFL:H:[cancelbutton (]-12-[acceptbutton)]CancelButton Width 72,acceptbutton width 50, the distance between themH:[wideview (>[email protected])Wideview width greater than or equal to 60point, the constraint

1. MantleMantle allows us to simplify the model layer of COCOA and Cocoa Touch applications. To put it simply, a network request is often made in the program, and the request is generally a JSON string, and we typically build a model class to hold the data. This requires that we write a series of serialization code to convert the JSON to Model. This is time-consuming, error-prone, and not easy to modify. Mantle is a good solution to this problem and is easier to use. Github:https://gith

For iOS app developers, there is no interface adaptation for many screen sizes like Android developers, so hard-coded coordinates work well, but it's not a good idea in design mode. There are also some problems, such as the adaptation of IPhone5, the switch between the screen and so on. Perhaps you can do two sets of UI solutions to fit, but this increases the duplication of effort, and not high-end, in case there is a new screen size. Philosophy will introduce two big automatic layouts in iOS:

, because the screen size coordinates have changed, the height increases 568-480 = 88 points, then uses the absolute localization way, will cause the program height is not enough, if the program does not fit, the system will be the extra 88 points will be automatically divided into two parts , making black edges appear up and down. corresponding to different models, screen coordinate size has changed, can no longer be absolutely positioning, in order to solve this problem, iOS has a new technol

1. MantleMantle allows us to simplify the model layer of COCOA and Cocoa Touch applications. Simply put. A network request is often made in the program, and the request is usually a JSON string. We usually build a model class to hold the data. This requires that we write a series of serialization code to convert the JSON to Model. This is a very time-consuming, easy mistake. Not easy to change. Mantle was very good at overcoming this problem. and easier to use. Github:https://github.com

Apple has just released IOS9, adding two new features to the ipad, Slideview and Splitview, which can be paged out without shutting down the current activation app, with a 30% scale display, which allows two apps to run at 50% 50%, 70%30% ratio operation, feel very convenient.However, the user's convenience while the developer, in the same screen running two apps when the app display scale changes, then you need to deal with several different sizes, fortunately, Apple has

First, the use of autoresizing (understand)Only the parent control can be referenced1, to achieve the screen switching, can not be the control of the frame capillary, the need for screen adaptation2. You need to refer to the parent controlUse Auto layout disabledwill appear autoresizing3, AutoLayout and autoresizing are mutually exclusive.Do not run to see situations in different sizespreview-"Mainstoryboard4, the outer side of the four line check, in

1. Basic ConceptsiOS devices have only one size before the ipad and iphone 5 appear. The only thing we need to consider when making screen adaptations is the direction of the device. Many applications do not support steering, so there is no screen-fit job at all. With the launch of the ipad and iphone 5, and the next iphone 6, the screen size has become an object to consider. Before IOS7, when making UI for an application, especially for universal, we always first think about the length and widt

-uiinterpolatingmotioneffect for details Uiview + easingfunctions Uiview-easingfunctions is a category of uiview. You can add a easing function to the uiview attribute that can be animated. Test environment: xcode 5.0, IOS 6.0 or above Uiview + lyt Lyt is a type of uiview and nsview, which can improve the readability of autolayout. Applicable to iOS and OS X. It expresses better semantics with less code and supports code population and dynamic layout

: Compact, Any, and Regular. Therefore, there are a total of nine categories, A prompt is displayed on the page when setting the Size Class. For example, if the width is Compact and the height is Any, the screen is displayed in the portrait mode of 3.5-inch, 4-inch, and 4.7-inch: The official Apple website provides examples, such as iPad: For example, iPhone: For example, the screen status of iPhone 6 plus: Lab Size Class is used to classify screens of different sizes, while