ios autolayout

1. Overview : as iOS devices update iterations , screen- fitting issues become increasingly important , AutoLayout. only after Xcode4.1 and OS X10. 7. 2.Brief introduction: AppleProvides a2Type of layoutAutoLayout, xib; Another way to layout ,apple2:nslayoutmanagernslayoutconstraintnslayoutmanagernstextstorage,nstextcontainer implement nscoding protocol used to layout text view span class= "s2" >,nslayou

Original: http://www.mgenware.com/blog/?p=491Next: IOS: Use AutoLayout (1) in your code – scaled and prioritized.We continue to look at the topic of using AutoLayout in code. First, that is intrinsicContentSize , the built-in size of the control. For example UILabel , the UIButton controls, they all have their own built-in size. The built-in size of the control i

addsubview:redview];12 13//pitch NSNumber *margin = @20;15//Add horizontal constraint NSString *vfl1 = @ "H:|-mar Gin-[blueview]-margin-[redview (==blueview)]-margin-| "; Nsdictionary *views = nsdictionaryofvariablebindings (Blueview,redview); Nsdictionary *mertics = NSDict Ionaryofvariablebindings (margin), nsarray *cons = [nslayoutconstraint constraintswithvisualformat:vfl1 options: Nslayoutformatalignallbottom | Nslayoutformatalignalltop metrics:mertics views:views];21 [Self.viewADDCONSTRAIN

:0.0constant -]; [ Self. StartbuttonAddconstraint:heightconstraint];//Add right constraintNslayoutconstraint *rightconstraint = [Nslayoutconstraint constraintwithitem: Self. StartbuttonAttribute:nslayoutattributeright relatedby:nslayoutrelationequal Toitem: Self. ViewAttribute:nslayoutattributeright multiplier:1.0constant0]; [ Self. ViewAddconstraint:rightconstraint];//Add bottom constraintNslayoutconstraint *bottomconstraint = [Nslayoutconstraint constraintwithitem: Self. StartbuttonAttribute:n

as:Once you've set it up, you can see the red error appearing again. We point into a look, it turns out that the constraint conflict. Such as:Why does this happen? We just said that the height of the contentview is equal to the screen high, but now it is not the same, is the height of the label +900+100+10, which will certainly conflict.So, how to resolve this conflict? We just need to remove contentview.hegith = height.Click the red dot, select "Contentview.hegith = height" and click Delete.Su

4sBecause I want these two buttons to always be the same size: two buttons and Gaoyao are equal, while two buttons stay at a fixed distance from both sides of the screen, and the distance between two buttons remains the same, add the following constraint: Select two buttons individually and click Editor->pin->width,editor->pin->height to set their fixed width and height Select two button respectively and click editor->pin->leading space to superview,editor->pin->trailing space to S

modifying the corresponding error and adding the appropriate code, let's look at the results of the operation. When the switch is turned on, the front compression resistance is greater than the label behind. When the switch is closed, the resistance priority is greater than the front, and the operating effect is as follows.　　Through the demo of the example above, you should have an intuitive feel for content hugging priority and content Compression resistance , this blog will come here first. B

In most apps (especially social, such as QQ) there will often be a change of Avatar scene: Click on the user to load the avatar, loading the system picture, the user click on the selected image, you can zoom and drag the picture, has changed the circle cut the picture part of the box. For QQ's Avatar Select Edit interface:Figure 1.QQ Photo Editing interfaceIn the interface, you can zoom in, zoom out, drag, and the white circle area indicates the range you want to crop when you click OK. Attentio

In iOS Autolayout, the Frame of childViewController is abnormal when ViewController is nested. In a recent project, we used Storyboard and AutoLayout for development. A ViewController contains multiple child viewcontrollers. As a result, when we add them to the parent ViewController, a coordinate exception occurs. tracking code found that, this is because the Fra

IOS AutoLayout (2)-dynamic diagram (iosautolayout) Original Blog, reprinted, please indicate the sourceBlog.csdn.net/hello_hwc Preface: The previous article introduced some preparations for AutoLayout. This article continues to explain how to use Storyboard to create AutoLayout. The next article will explain how to

Yes, it is very clear to tell you reader, AutoLayout can do animation. AutoLayout is used to make a variety of constraints, is used to fit different screens, then when we change some of these constraints and say that the process of change at a slow speed display, then it is not the implementation of the animation ~ First look at a cool animation, this animation is provided by the book

be the same when the cell point is opened. Like this: The reason is that we only tell the contents of the system cells to be changed, and the system thinks that the height of the cell is still the original height, so the content is compressed instead of the height of the cell. But Reloaddata will reload the entire table and not meet the requirements. We have the following methods: 1: -(void) TableView: (UITableView *) TableView Didselectrowatindexpath: (Nsindexpath *) indexpath

IOS AutoLayout Automatic Layout Intermediate Development tutorial (4)-label text automatically adapts to size, width2015-01-24 00:30When compared to people will often encounter the label or TextField display text view, display incomplete, or can not automatically change the length, automatically change the font settings:Today, let's show you how to get the label to fit a different width in

(1) Use size Classes in storyboard.We have used AutoLayout before, and now we have a size Classes, which can be seen as AutoLayout settings under different size Classes.Detailed tutorials, http://www.cocoachina.com/ios/20141020/9978.html--Seemingly, storyboard's functions are becoming more powerful. The adaptation of different sizes and screens is enough to make

IOS uses a AutoLayout occlusion keyboard for processing Explain my situation first: 1. I used a simple login problem with the combination of masonry and iOS AutoLayout. LoginView is one of my login background,, set the center, when I click Input, I will determine whether the keyboard will block my LoginView, if not bl

Sometimes, we need to dynamically change a value in the AutoLayout in view, such as moving the X-value, or the Y-value, what to do?The following encapsulates a better way to remove: excerpt from Https://github.com/MakeZL/ZLAutoLayout (the framework that encapsulates AutoLayout)The following is used to Zllayoutconstraint is an alias Nslayoutconstrainttypedef Nslayoutconstraint Zllayoutconstraint;------------

IOS deletes AutoLayout Sometimes, we need to dynamically change a value in AutoLayout in the View, such as moving the x value or y value. What should we do? ZLLayoutConstraint is used as the alias NSLayoutConstraint. Typedef NSLayoutConstraint ZLLayoutConstraint; --------------- Delete all constraints #pragma mark - remove view to superView

One. Use of AutoLayout:Mainly used for screen adaptation, especially after the iphone6,plus has occurred.Two. How to use AutoLayout?Click on the left one to see:Click on the left two:Basically want to AutoLayout, will be in these two buttons on the fuss.Then do an exercise, such as:The width is 100, and then centered, regardless of how the view is reversed, always centeredOne. There are two constraints: wid

One. Use of AutoLayout:Mainly used for screen adaptation, especially after the iphone6,plus has occurred.Two. How to use AutoLayout?Click on the left one to see:Click on the left two:Basically want to AutoLayout, will be in these two buttons on the fuss.Then do an exercise, such as:The width is 100, and then centered, regardless of how the view is reversed, always centeredOne. There are two constraints: wid

In recent projects, with storyboard, AutoLayout development, a viewcontroller nested multiple sub-viewcontroller, resulting in a coordinate exception problem when adding it to the parent Viewcontroller; tracking Code Discovery , this is due to the AutoLayout state, get frame data is inaccurate (or the timing is not right) caused by, on the internet for a long time, learn from each other, get the solution, t