viewgroup

Original title: Functional operations over views in ViewGroup using KotlinOriginal link: http://antonioleiva.com/functional-operations-viewgroup-kotlin/Original Antonio Leiva (http://antonioleiva.com/about/)Published in the original: 2015-07-29Collections, iterations, arrays, sequences ... All of these share a useful set of functions that help transform, sort, and manipulate their elements . However, due to

There are three important ways to inherit ViewGroup , so let's take a look at the following:1.onlayout methodprotectedvoidOnLayout (BooleanChangedintLeftintTopintRightintBottom) {}When we inherit ViewGroup , we will provide this method in addition to the constructor, and we can see that the method is defined in the source code of ViewGroup , that is, the parent c

2.1.0 View and ViewGroup class relationshipAndroid View and ViewGroup in terms of composition architecture, it seems that ViewGroup is above View, View needs to inherit ViewGroup, but this is not actually the case. View is the base class, And ViewGroup is its subclass. This

question: How do you create a layout that you see, for example?Figure 1(Original address: http://blog.csdn.net/vector_yi/article/details/24415537)you might say that usingRelativelayout and Marginscan be achieved. Indeed, for example, the following XML code can easily build a similar layout:Effect 2:Figure 2However, when encountering complex, variable-like layouts, the use of margins may seem cumbersome. Here we look at another way to create a similar layout---Define yourself ViewGroupThe advanta

event response mechanism is first distributed (first received by an external view, then to the minimum view of its inner layer), and then processed (from the smallest view cell (event source) to the outer layers. ) is implemented in the form of a.Complexity is manifested in the ability to control whether each layer of events continues to be delivered (distributed and intercepted cooperatively), as well as the specific consumption of events (event distribution also has event spending power).

Teach you to take care of Android custom ViewGroup http://www.jianshu.com/p/138b98095778 words 1794 read 7030 comments 8 likes 37 Previous we introduced the knowledge of custom view in Android, and implemented a custom view like the Google Rainbow Progress bar, and today we'll learn more about customizing a viewgroup. ViewGroup we know that

Description of the UIFor an Android application, all user interface elements are built by View and ViewGroup objects. Viewis an object that draws on the screen to interact with the user. And for ViewGroup that, it's a View layout container for other and ViewGroup objects!AndroidProvides us with a View ViewGroup collect

Basic basic knowledge of the entry level. Previously, the relationship between views, viewgroup, widgets, and layout was unclear. After learning, I made a summary as follows: 1. View, viewgroup > View:} 1. All advanced UI components are implemented by inheriting the View class.} 2. A view occupies a rectangular area on the screen.} 3. Rendering. 4. Processing events} 5. Set whether to be visible} 6. Set whe

Basic basic knowledge of the entry level. Previously, the relationship between views, viewgroup, widgets, and layout was unclear. After learning, I made a summary as follows: 1. View, viewgroup > View: } 1. All advanced UI components are implemented by inheriting the View class.} 2. A view occupies a rectangular area on the screen.} 3. Rendering. 4. Processing events} 5. Set whether to be visible} 6. Se

Viewgroup is simply a view that can be installed. today, I encountered a problem: I needed a layout that could automatically wrap the line according to the width of the view in a row. I found it online. There are no relevant examples, but I found the idea: define a viewgroup, and then automatically check the abscissa value of the right edge of the view in the onlayout file, and determine whether to display

events. Returns false, indicating that the view internally only handles the Action_down event, the event continues to pass, and is passed to the Superior view (ViewGroup). ... if (Li! = null Li.montouchlistener! = null (mviewflags enabled_mask) = = ENABLED Li.mOnTouchListener.onTouch (this, event)) {//The OnTouch method here is the callback of the OnTouch () methods that were rewritten when we registered Ontouchliste

Android custom Viewgroup switching View with Adsorption Effect 1. Overview first This is probably the result. Let's talk about the implementation Idea 1 first. first, we need to get the image url (network), id, path (local), bind the View with the data, and write our own Adapter 2. customize the layout of the view to be displayed in the Viewgroup, and process the touch event logically. 3. write switch call

Sometimes we have the need to have two or more interface switches in an activity, just like Viewpager. But in these interfaces you need to be able to have listview,gridview and other components. If it is longitudinal, it seems OK, no effect, then if it is horizontal, then there will be something. Because Viewpager will intercept touch events. And if the Viewpager touch event is intercepted to the child control inside, then Viewpager cannot respond to the sliding event. So how can the interface b

Next Source code: http://files.cnblogs.com/inkheart0124/PushSlider.zip There are three functions for processing touch events in ViewGroup. Public boolean dispatchTouchEvent (MotionEvent ev); event dispatch Public boolean onInterceptTouchEvent (MotionEvent ev); event Interception Public boolean onTouchEvent (MotionEvent ev); Event Processing (There are only two views, dispatchTouchEvent and onTouchEvent. ViewGroup