RecyclerPinnedHeader | RecyclerView 固定标题Item,悬浮条目,类似通讯了分类 | RecyclerView library

 by   hexingbo Java Version: 1.0.2 License: No License

kandi X-RAY | RecyclerPinnedHeader Summary

kandi X-RAY | RecyclerPinnedHeader Summary

RecyclerPinnedHeader is a Java library typically used in User Interface, RecyclerView applications. RecyclerPinnedHeader has no bugs, it has no vulnerabilities, it has build file available and it has low support. You can download it from GitHub.

       列表展示是开发过程中经常用到的功能,通常通过 ListView 或者 RecyclerView 控件来实现。在列表显示的过程中可能会碰到这样的需求:需要对列表进行分组,每个分组都有标题 item view 和内容 item view 而且希望列表在滑动的过程中每个分组的标题 item view 可以一直固定的列表的顶部。之前的博客我们已经通过ListView实现了这一功能,有兴趣的可以参考链接Android分组悬浮列表实现。but这一次我们通过 RecyclerView 来实现这一需求。实现过程比 ListView 的实现过程要更加简单。.        在讲怎么实现之前先献上通过RecyclerView实现的效果图.        接下来就是实现过程了.        我们知道 RecyclerView 给提供了一个RecyclerView.ItemDecoration 来给我们使用,这可是好东西呀。RecyclerView.ItemDecoration 从字面上来看是用来给 RecyclerView 里面每个 item 添加装饰用的(当然也可以给RecyclerView的整体添加装饰)。例如,你可以通过 RecyclerView.ItemDecoration 来给 RecyclerView 的每个 item 添加分割线、给每个 item 添加 padding 等等。这里我们通过 RecyclerView.ItemDecoration 来实现 RecyclerView 分组悬浮列表的功能。.        我们先简单的看下RecyclerView.ItemDecoration里面几个函数:. 看到 ItemDecoration 提供到我们的就三个函数了:onDraw()、onDrawOver()、getItemOffsets()。getItemOffsets()函数会在 RecyclerView 里面每个子 view 测量的时候调用,可以用来给每个子 view 添加offset(间距)。onDraw()会在RecyclerView的onDraw()方法里面调用。onDrawOver()函数会在RecyclerView的draw()函数里面调用。关于onDraw()、onDrawOver()两个函数的区分咱们可以简单的认为onDraw()是在RecyclerView绘制内容的时候调用。onDrawOver()是在RecyclerView绘制完内容之后再调用,相当于可以在RecyclerView之上在绘制一层内容。.        通过对 RecyclerView.ItemDecoration 类的简单分析,再结合我们分组固定标题 View 的需求,我们是要把每个分组的标题 View 固定在顶部,恩,那肯定是在要绘制在RecyclerView层之上的吧,和RecyclerView.ItemDecoration里面的onDrawOver()函数正好对应上了。.        接下来的事情就好办了.        首先,既然有些标题是要固定的,那咱们一定要明确的知道哪些position位置对应的view是标题吧,只能通过adapter做文章了,所有我们就有了一个基础的PinnedHeaderAdapter,代码如下:.        接下来,RecyclerView.ItemDecoration里面的onDrawOver()函数里面我们做好三件事情就好了:第一,找到当前界面要一直固定在顶部的 View、第二,把找到固定在顶部的 View 画在 RecyclerView 的顶部、第三,当将要到达顶部的标题 View 和已经画在顶部的 View 相遇的时候顶部 view 上移的问题。这三个问题实现起来也不复杂,所以这里我们就直接贴代码了,毕竟代码才是王道吗。.        整个功能到这就结束了,是不是很简单.
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            kandi-support Support

              RecyclerPinnedHeader has a low active ecosystem.
              It has 2 star(s) with 0 fork(s). There are 1 watchers for this library.
              OutlinedDot
              It had no major release in the last 12 months.
              RecyclerPinnedHeader has no issues reported. There are no pull requests.
              It has a neutral sentiment in the developer community.
              The latest version of RecyclerPinnedHeader is 1.0.2

            kandi-Quality Quality

              RecyclerPinnedHeader has no bugs reported.

            kandi-Security Security

              RecyclerPinnedHeader has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

            kandi-License License

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

            kandi-Reuse Reuse

              RecyclerPinnedHeader releases are available to install and integrate.
              Build file is available. You can build the component from source.
              Installation instructions are not available. Examples and code snippets are available.

            Top functions reviewed by kandi - BETA

            kandi has reviewed RecyclerPinnedHeader and discovered the below as its top functions. This is intended to give you an instant insight into RecyclerPinnedHeader implemented functionality, and help decide if they suit your requirements.
            • Initializes the activity
            • Switch expand
            • Obtain group item list
            • Set up the activity s views
            • Switch expand
            • Obtain group item list
            • Initializes the grid
            • Initialize view
            • Obtains the list of available data
            • Helper method to override on RecyclerView
            • Ensure pinned header view
            • Get position of pinned header adapter
            • Helper method to set the ViewHolder on a specific position
            • Get the state from the state
            • Returns the color of the order state
            • Interceptors the pinned header
            • Returns the pinned header decoration
            • Initializes the view
            • Obtain the list of data
            • Returns the number of items in the expanded list
            • Creates and returns the view holder which is used to show the view
            • Handle a touch event
            • BindViewViewHolder with dataViewHolder
            • BindViewHolder to ListViewHolder
            Get all kandi verified functions for this library.

            RecyclerPinnedHeader Key Features

            No Key Features are available at this moment for RecyclerPinnedHeader.

            RecyclerPinnedHeader Examples and Code Snippets

            No Code Snippets are available at this moment for RecyclerPinnedHeader.

            Community Discussions

            QUESTION

            Correct way to run two Tk() mainloops independently, with second being started from first script?
            Asked 2022-Apr-18 at 02:03

            script_a.py

            ...

            ANSWER

            Answered 2022-Apr-18 at 02:03

            With many hours of testing, I did have success in running two Tk() loops, but it had potential to be problematic, as "Bryan Oakley" had posted in many threads about.

            Ultimately, I decided when I was in need of running something alone, I'd start my GUI with arguments and process it in an entirely new process instead of passing any arguments directly. Seems like a safer option.

            Source https://stackoverflow.com/questions/71880097

            QUESTION

            Xcode 13 - "Button" title not disappearing
            Asked 2022-Mar-31 at 04:36

            After updating to Xcode 13, I face a strange issue, I make a button without title in the storyboard, but it appears with "Button" title in build.

            And here's what it looks like in storyboard

            But in build it looks like this

            ...

            ANSWER

            Answered 2021-Sep-30 at 06:06

            If you want to stick to using a Plain button, try entering a thin space (U+2009) character as the title, which won't consume much space and solves the issue. (Thanks to @El Tomato for suggesting white space characters)

            Here it is for easier copy-pasting:

            Source https://stackoverflow.com/questions/69375584

            QUESTION

            ListView doesn't separate objects from doc
            Asked 2022-Mar-29 at 03:21

            [RESOLVED]

            Both answers under question are right. There is a final redaction below in post.

            I'm trying to create scrollable list of posts, but instead I got static non-scrollable block of strings, which is overflowing.

            1. Example:

            1. Overflowing:

            ...

            ANSWER

            Answered 2022-Mar-14 at 19:06
            @override
              Widget build(BuildContext context) {
                return Scaffold(
                    floatingActionButton: FloatingActionButton(
                      onPressed: _writePost,
                      tooltip: 'Increment',
                      child: Icon(Icons.create, color: Colors.grey[300]),
                    ),
                    body: SizedBox(
                       height: MediaQuery.of(context).height*0.8,  // add this line 
                        child: 
                      // Container(        // do not need this
                      //                   child:   // and this do not need    
                      // Column(children: [      // and this do not need 
                      StreamBuilder>(
                        initialData: const [],
                        stream: _socketStream.stream,
                        builder: (context, snapshot) {
                          if (_isLoading) {
                            return const Center(
                              child: CircularProgressIndicator(),
                            );
                          }
                           ListView(  // change this to ListView.builder for more performance
                            scrollDirection: Axis.vertical,
                            shrinkWrap: true,
                            children: [
                              ...snapshot.data!.map(
                                (post) => Padding(
                                  key: ValueKey(post.id),
                                  padding: const EdgeInsets.symmetric(vertical: 10),
                                  child: ListTile(
                                    title: Text(
                                      post.content,
                                      style: const TextStyle(fontSize: 20),
                                    ),
                                    trailing: MaterialButton(
                                      onPressed: () {
                                        _deletePost(post.id);
                                      },
                                      child: const Icon(
                                        Icons.delete,
                                        size: 30,
                                      ),
                                    ),
                                  ),
                                ),
                              )
                            ],
                          );## Heading ##
                        },
                      ),
                   // ]) // comment this
                   // ).  // and comment this
                 )
               );
              }
            

            Source https://stackoverflow.com/questions/71472464

            QUESTION

            Change color of child button element regardless of box decoration background color
            Asked 2022-Mar-03 at 11:56

            I am building a landing page that has a logo and then a sign in and login button below it. I used a box decoration to specify the background color because I am very particular about the gradient scheme. However, I realize it may have some kind of "absolute" effect on my container widget because I can't seem to change the colors of the buttons within the widget. I am new to flutter UI and I am probably layering the widgets incorrectly, but any help would be greatly appreciated! Here's the code for the landing page:

            ...

            ANSWER

            Answered 2022-Mar-03 at 11:44

            Try this it will work. Change on pressed from null to this.....

            Source https://stackoverflow.com/questions/71336423

            QUESTION

            Stop child NSWindow disappearing when moved to another screen
            Asked 2022-Feb-27 at 16:17

            On macOS Monetrey, when I move a child NSWindow to another screen (by manually dragging it), it disappears. Minimal repro using SwiftUI:

            ...

            ANSWER

            Answered 2022-Feb-27 at 16:17

            I do believe you just want to add a second NSWindow, or a NSPanel. Without a child window relation. In AppKit document-based apps you would for example overwrite -[NSDocument makeWindowControllers] and setup multiple window controllers for one document.

            Child windows are for special use cases, for example: functionality like autocompletions lists, where you would want a chrome-less window with a table view beneath a textfield, which automatically follows the parent window when moved.

            Here is TextEdit with such a autocompletions window and the Xcode Debug View Hierarchy of the same:

            See this note from the documentation:

            After the childWin is added as a child of the window, it is maintained in relative position indicated by place for subsequent ordering operations involving either window. While this attachment is active, moving childWin will not cause the window to move (as in sliding a drawer in or out), but moving the window will cause childWin to move.

            I don't believe that a child window was ever intended to be independently moved from its parent window, especially different screens.

            Source https://stackoverflow.com/questions/71213724

            QUESTION

            How to open a new MDI sub-window in PyQt5?
            Asked 2022-Feb-14 at 18:51

            What I want to do is to open a new Countrypage sub-window by clicking on the "New" button which is in Countrypage itself.

            For example, if I click the "New" button in a CountryPage window (window title: "Country page"), one more new Countrypage window will be opened in the MDI area (window title: "Country Page 1"). Now if we click the "New" button in "Country Page 1", one more new window will open in the MDI area (window title: "Country page 2") and so on - and I want to close the windows one by one by pressing the corresponding "Close" button in Countrypage. New window are opened only by pressing a "New" button.

            And if we close the last opened window by pressing the "Close" button, the text item in the "Country" text-box will be automatically updated in the previous window's "Country" text-box and so on.

            Main Script :

            ...

            ANSWER

            Answered 2022-Feb-14 at 18:38

            The adding and closing of sub-windows is best handled by the main-window. The CountryPage class doesn't need to know anything about the sub-windows. The new/close buttons can be directly connected to methods of the main-window. This makes it easier to manage the sub-windows via the functions of the mdi-area.

            Below is a re-write of your example which should do what you asked for:

            Main Script:

            Source https://stackoverflow.com/questions/71027763

            QUESTION

            TS7006: Parameter 'event' implicitly has an 'any' type
            Asked 2022-Feb-04 at 09:17

            In angular,

            This is script

            ...

            ANSWER

            Answered 2021-Dec-30 at 01:04

            Some alternatives you can use:

            Source https://stackoverflow.com/questions/70526259

            QUESTION

            How to dynamically define Headers and Settings for UWP NavigationView's menu, using C++/winRT?
            Asked 2022-Feb-02 at 17:01

            I'm working on a cross-platform project in C++ generating the UI dynamically, and I am struggling with C++/winRT UWP NavigationView on two problems:

            1. When defining a NavigationViewItemHeader, the resulting header title doesn't show in the navigation menu, the space remains empty,
            2. When trying to update the SettingsItem of the navigation menu, the value of the Settings navigation item is nullptr as returned by SettingsItem().

            Here is the code I wrote for generating the menu from a list of items managed independently from the host (e.g. Windows):

            ...

            ANSWER

            Answered 2022-Feb-02 at 11:34

            Dynamic Headers/Footers enable different grouping options in reports, such as "By Location" or "By Location By System": Note that the words "Report Definitions" are circled above. Although reports can have up to three Dynamic Headers/Footers, some reports only have one or two Dynamic Groups.

            Source https://stackoverflow.com/questions/70944049

            QUESTION

            Android Jetpack Compose: Keyboard changing from numeric to alphabets after modifying input text
            Asked 2021-Dec-24 at 04:43

            While exploring TextField in a Jetpack Compose, I came across a case where I have to modify input typed in the field. For example, adding a comma after entering 3 characters.

            This is how I made it.

            ...

            ANSWER

            Answered 2021-Dec-18 at 11:45

            This kind of cases is exactly what VisualTransformation is intended for.

            Here's a Googler's comment on another issue:

            I don't think we can fix this issue easily.

            The filtering text in onValueChanged callback is generally not recommended because the text state is shared with out process IME(software keyboard). The filtering text means the text content changes internally, then the new state is notified to IME. This is not a normal path to IME and different IME reacts differently to this unexpected state change. Some IME may try to reconstruct the composition, others may give up and start new session, etc. This is mostly due of the historical reason and hard to fix from now. So, please avoid filtering text in onValueChanged callback and consider following alternatives:

            1. (Recommended) Don't filter it and show error message. (irrelevant here)
            2. Use VisualTransformation for changing visual output without modifying edit buffer.

            Source https://stackoverflow.com/questions/70401519

            QUESTION

            Achieve Unique Column Width for each Cell in Different Rows with a GridPane?
            Asked 2021-Nov-24 at 16:43

            I am trying to model credit card data in JavaFx using a GridPane:

            My model contains 3 rows (Note: each field is comprised of label + text field):

            Row 1: First name and last name (4 fields)

            Row 2: Credit card number (2 fields)

            Row 3: Expiration date - month, year + CVV (6 fields)

            See screenshot below:

            I was reading this tutorial which states:

            All cells in the same row will have the same height, and all cells in the same column will have the same width. Different rows can have different heights and different columns can have different widths.

            Are there any workarounds to to have different size columns on a row by row basis in a GridPane?

            ...

            ANSWER

            Answered 2021-Nov-24 at 00:54

            For the specific layout in the image, I would use a VBox with HBox for rows:

            Source https://stackoverflow.com/questions/70088871

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

            Vulnerabilities

            No vulnerabilities reported

            Install RecyclerPinnedHeader

            You can download it from GitHub.
            You can use RecyclerPinnedHeader 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 RecyclerPinnedHeader 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 maven.apache.org. For Gradle installation, please refer gradle.org .

            Support

            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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          • HTTPS

            https://github.com/hexingbo/RecyclerPinnedHeader.git

          • CLI

            gh repo clone hexingbo/RecyclerPinnedHeader

          • sshUrl

            git@github.com:hexingbo/RecyclerPinnedHeader.git

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