View | 如果大家对自定义ViewGroup和自定义View有一定的掌握,肯定不会对onMeasure方法陌生:

 by   hayukleung Java Version: Current License: No License

kandi X-RAY | View Summary

kandi X-RAY | View Summary

View is a Java library. View has no bugs, it has no vulnerabilities, it has build file available and it has low support. You can download it from GitHub.

如果大家对自定义ViewGroup和自定义View有一定的掌握,肯定不会对onMeasure方法陌生: ViewGroup的onMeasure方法所做的是: childView设置测量模式和测量出来的值。 如何设置呢?就是根据LayoutParams。 如果childView的宽为:LayoutParams. MATCH_PARENT,则设置模式为MeasureSpec.EXACTLY,且为childView计算宽度。 如果childView的宽为:固定值(即大于0),则设置模式为MeasureSpec.EXACTLY,且将lp.width直接作为childView的宽度。 如果childView的宽为:LayoutParams. WRAP_CONTENT,则设置模式为:MeasureSpec.AT_MOST 高度与宽度类似。 View的onMeasure方法: 主要做的就是根据ViewGroup传入的测量模式和测量值,计算自己应该的宽和高: 一般是这样的流程: 如果宽的模式是AT_MOST:则自己计算宽的值。 如果宽的模式是EXACTLY:则直接使用MeasureSpec.getSize(widthMeasureSpec);.

            kandi-support Support

              View has a low active ecosystem.
              It has 27 star(s) with 9 fork(s). There are 2 watchers for this library.
              It had no major release in the last 6 months.
              There are 1 open issues and 0 have been closed. On average issues are closed in 254 days. There are no pull requests.
              It has a neutral sentiment in the developer community.
              The latest version of View is current.

            kandi-Quality Quality

              View has 0 bugs and 0 code smells.

            kandi-Security Security

              View has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.
              View code analysis shows 0 unresolved vulnerabilities.
              There are 0 security hotspots that need review.

            kandi-License License

              View does not have a standard license declared.
              Check the repository for any license declaration and review the terms closely.
              Without a license, all rights are reserved, and you cannot use the library in your applications.

            kandi-Reuse Reuse

              View releases are not available. You will need to build from source code and install.
              Build file is available. You can build the component from source.
              Installation instructions are not available. Examples and code snippets are available.
              View saves you 3931 person hours of effort in developing the same functionality from scratch.
              It has 8369 lines of code, 644 functions and 128 files.
              It has medium code complexity. Code complexity directly impacts maintainability of the code.

            Top functions reviewed by kandi - BETA

            kandi has reviewed View and discovered the below as its top functions. This is intended to give you an instant insight into View implemented functionality, and help decide if they suit your requirements.
            • Initializes the list
            • Get the singleton instance
            • Convert input string to tokens
            • Creates a token for the specified character
            • OnDraw method
            • Generate the dst bitmap
            • Generate the source bitmap
            • Override this method to draw the transparent color on the circle
            • Gets the path for a rectangle
            • Sets the path to the canvas
            • Initializes the View
            • Override this to adjust the size of the view
            • Override on measure size
            • Draws the path
            • Handles a touch event
            • Region measure
            • Initialize the primitive arrays
            • Called when the layout is changed
            • Initialize the circle
            • Override onDraw method
            • This method is called when layout is changed
            • Create the entries
            • Initializes the RecyclerView
            • This method is called when the tag is changed
            • On draw
            • Draws the transparent color
            Get all kandi verified functions for this library.

            View Key Features

            No Key Features are available at this moment for View.

            View Examples and Code Snippets

            No Code Snippets are available at this moment for View.

            Community Discussions


            how to get jstree instance from iframe source?
            Asked 2021-Jun-16 at 03:07

            I have prepare 2 tree view in separate iframe using jstree. The right tree view should control the left tree view. When user click one one the list in right tree view, the respective item folder will open and selected on left tree view. I can make it happen using div in single page. I control the left tree view using instance of left tree view in right jstree div var instance = $('#left').jstree(true);.



            Answered 2021-Jun-16 at 03:07

            I had used document.getElementById('1').contentWindow.jQuery('#left').jstree(true); to get instance from iframe with id='1'. In order to listen to right iframe(with id='2') if any menu has been clicked, I used document.getElementById('2').contentWindow.jQuery('#right').on("changed.jstree",function(e,data){}). I get the instance of left iframe within this function. By using this instance, I has deselect previous selection, select current selection, and open children of selected menu.




            How strict is the mvc pattern with model and view interactions?
            Asked 2021-Jun-16 at 01:01
            I am confused about how model and view can interact

            I was making a simple to do app with mvc pattern and I saw an article which said you shouldn't pass the model values directly to the view, which made the project more complex than I thought (I am relatively new to programming and this is the first time I am trying out a design pattern).

            But then later on I talked to someone who said that that is not true and you can send the model data directly to view, he didn't even use classes or some kind of grouping to separate the function he just put them in separate files.

            I was wondering if there is a guideline that I couldn't find or we can do whatever we want as long as they are kind of separated. I would love an article or a guide to read up on as well.



            Answered 2021-Jun-16 at 01:01

            Since, I am not 100% sure the context in which you are trying to apply the MVC pattern, a good generic explanation of MVC can be found in GoF's 1995 book, Design Patterns: Elements of Reusable Object Oriented Software.

            In the book, they state the following.

            The Model is the application object, the View is its screen presentation, and the Controller defines the way the user interface reacts to user input.

            A more robust explanation can be found from Martin Fowler where he also makes the case for a variation of Model View Controller that uses a Presentation Model.

            If you are referring to Spring MVC then there is some magic that blurs the lines a bit. But in general, you have a controller that represents some screen or an encapsulated piece of functionality that the user (web requests) interact with. The controller serves up responses that are derived from the domain, usually via a Spring Service (i.e. @Service). The domain (Model) doesn't know anything about the View and the View may or may not know anything about the domain.

            Given that, the View should be derived from the Model. But that's not always the case since sometimes how we present things to a screen is not the best logical way to model things in our domain - not to mention, the domain should be presentation agnostic. This leads into Fowler's argument for a Presentation Model, which is a model that belongs to the Presentation.

            I call this a Presentation Model because it's a model that is really designed for and thus part of the presentation layer.

            Microsoft took that idea and ran with it in a variant of MVC called MVVM (Model View ViewModel).

            You can read more about that in Microsoft's documentation on ASP.Net Core.

            So, back to your original question of "Should you pass the model directly to the view?" If you are using MVC then the controller is what provides the interaction. But if you're really asking, "Can you bind your view directly to the model?" If your model has all the stuff you need organized how your view needs it, then sure. And if it's simple enough, maybe that's the way to go. Otherwise, you could go with something like a Presentation Model or MVVM.



            Parallelize histogram creation in c++ with futures: how to use a template function with future?
            Asked 2021-Jun-16 at 00:46

            Giving a bit of context. I'm using c++17. I'm using pointer T* data because this will interop with cuda code. I'm trying write a parallel version (on CPU) of a histogram creator. The sequential version:



            Answered 2021-Jun-16 at 00:46

            The issue you are having has nothing to do with templates. You cannot invoke std::async() on a member function without binding it to an instance. Wrapping the call in a lambda does the trick.

            Here's an example:



            My chainlink request isn't getting fulfilled?
            Asked 2021-Jun-16 at 00:09

            Can someone help me investigate why my Chainlink requests aren't getting fulfilled. They get fulfilled in my tests (see hardhat test etherscan events( But they don't get fulfilled when I make them from my react app (see react app contract's etherscan events

            Same contracts (different addresses), same function call.


            Here's the code I use to call them in my tests



            Answered 2021-Jun-16 at 00:09

            Remove your agreement vars in MinimalClone.sol, and either have the user input them as args in your init() method or hardcode them into the request like this:



            I need to strip all the symbols from a string in order to create an `IEqualityComparer` that ignores punctuation symbols
            Asked 2021-Jun-15 at 23:05

            In part of my application I have an option that displays a list of albums by the current artist that aren't in the music library. To get this I call a music API to get the list of all albums by that artist and then I remove the albums that are in the current library.

            To cope with the different casing of names and the possibility of missing (or extra punctuation) in the title I have written an IEqualityComparer to use in the .Except call:



            Answered 2021-Jun-15 at 23:05

            If you're going to use the CompareOptions enum, I feel like you might as well use it with the CompareInfo class that it's documented as being designed for:

            Defines the string comparison options to use with CompareInfo.

            Then you can just use the GetHashCode(string, CompareOptions) method from that class (and even the Compare(string, string, CompareOptions) method if you like).



            Pandas DataFrame: the cells are modified but the changes do not save
            Asked 2021-Jun-15 at 22:52

            I am a beginner in Data Science, so please sorry if my mistake is dumb.

            Here, I have a loop which views my data frame and makes changes using .loc The problem is that the changes are not saved at the end. I checked every step, everything is processing right. I even checked the modified cell right after working on it (look below) and its gives the value I put into it. However, when the program finishes the my excel data frame is not changed at all.

            Help please. Thank you in advance!



            Answered 2021-Jun-13 at 21:56

            when the program finishes my excel data frame is not changed at all.

            That's because you never wrote anything to the Excel file. With exc = pd.read_excel('...') you create a Python object exc (more specifically, a pandas DataFrame), and all the subsequent modifications happen to this object. To change the source file accordingly, you can use pandas' DataFrame.to_excel() method, by adding this line in the end:



            Class "App\Http\Controllers\User" not found
            Asked 2021-Jun-15 at 22:42

            So I was fetching data from my database to print in a table however, it says that Class "App\Http\Controllers\User" not found. Here is the controller and here is how I will print the data



            Answered 2021-Jun-15 at 22:42

            At the top off your controller add

            Laravel 8+



            React Native - Justify Content not Working
            Asked 2021-Jun-15 at 21:59

            I've been struggling with this all over my react-native app, so I set up a very simple example of it in codesandbox which you can view here:


            Within the View with the green background, all of the internal views are centered horizontally within their respective spaces as I would expect thanks to the "alignItems: center" style property. I would expect that I could also center them vertically within their spaces by setting "justifyContent: center", but that doesn't seem to work for me.

            Am I fundamentally misunderstanding something?



            Answered 2021-Jun-15 at 21:59

            The problem is that you are not aligning the text within the individual Views. Your example mistakenly aligns the inner View elements within the larger View element rather than aligning the text.

            To center-align the text vertically within their Views you just need to add justifyContent: "center" to those individual three green Views.

            Here's an example:

            To further explain why you were experiencing the issue you did, see this screenshot with boxes outlining the space the elements were taking up on-screen:

            You can see the inner Views are only taking up the needed width of the text elements inside, but are using the max height available to them.



            Search Filter in RecyclerView not showing anything
            Asked 2021-Jun-15 at 21:08

            My app consists in letting you add lists in which you can keep your notes. Therefore, I have this NotesListActivity where I can add and keep my Lists. I wanted to filter this lists following the tutorial and then I tried to adapt it to my code like below. Could you please tell me what is the problem here, cause I don't even get an error, I just not get any title of list as result. So, this is what I have in my RecyclerAdapter:



            Answered 2021-Jun-13 at 20:18

            The problem is that you are using an empty notesListAll list for filtering results; you need to populate it with the list of notes in the constructor



            How to get the data from a selected value in a view .NET Core API?
            Asked 2021-Jun-15 at 20:47

            I'm creating an application where the user can post information and see the information posted, something like a forum. I created a list where the publications stored in the database are shown, so on the main page that list is shown with the title, description, date, etc. of each publication. Now, what I'm trying to do is select anyone of the posts in the list and then display the full information of the selected post in other view. I'm using a MVC view with its respective controller to consume the API.

            The code on the API controller to get the info of the selected post:



            Answered 2021-Apr-12 at 02:43

            Community Discussions, Code Snippets contain sources that include Stack Exchange Network


            No vulnerabilities reported

            Install View

            You can download it from GitHub.
            You can use View like any standard Java library. Please include the the jar files in your classpath. You can also use any IDE and you can run and debug the View component as you would do with any other Java program. Best practice is to use a build tool that supports dependency management such as Maven or Gradle. For Maven installation, please refer For Gradle installation, please refer .


            For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .
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