How To Highlight Selected Item In Recyclerview Android Example

In previous blog, I have explain best practises of implementing RecyclerView in Android. Hello developers, In today's tutorial, we will learn about listview with searchview android studio example. Android Using RecyclerView with KOTLIN. When I click on one of the items, it gets selected and it is highlighted properly but when I click on another one, the second one gets highlighted with the older one. RecyclerView Android Example. Android RecyclerView is more advanced version of ListView with improved performance and other benefits. Learning Android Development - Page 1 of 2. Droid Android Basics, Android Fragment, Android ListView, Android Tabs Comments: 11 Hi to all, today we are going to learn how to enable multiple items to be chosen in ListView, GridView and in RecyclerView using CheckBox, you'll configure the ListView to display a checkbox next to each item. RecyclerView Example. Bottom sheets are displayed as a result of user triggered action, and also it can reveal additional content by swiping up. Set an OnClickListener in your ViewHolder creation:. This chapter has worked through the steps involved in combining the CardView and RecyclerView components to display a scrollable list of card based items. here I will load each grid block color different. In this post, i am going to implement a RecyclerView with multi and single selection feature. Open Android Studio And Create a New Project. RecyclerView. 5 Headers in RecyclerView; Introduction. This saves LayoutManager from tracking adapter changes to calculate animations. S This project is developed in Eclipse 3. In the scenarios where there are many items showed with listview, we need to put search filter functionality. In previous blog, I have explain best practises of implementing RecyclerView in Android. File item( index ); Parameters index The zero-based index of the file to retrieve from the list. It promises lots of performance improvements over the standard list view. Here we will first make an android GridView where different images will be shown. The DISTINCT clause is used to select only unique items from the result set. Calling one activity from another in android. I'm using c# with selenium. In order to add the RecyclerView to your Android Studio project, you will need to import the recylclerview-v7 support library dependency. This is done by triggering a request for more data once the user crosses a threshold of remaining items before they’ve hit the end. Note: If you don't see Select to Speak, go to Google Play to download the latest version of Android Accessibility Suite, then try these steps again. 📣 When initially Android ®️ team introduced the RecyclerView widget, we had to implement a custom Adapter in several applications, again and again to provide the items for our views. Hello developers, In today's tutorial, we will learn about listview with searchview android studio example. Using ListBox Components to Display a Table View in Mobile Applications. For example, let’s add dividers to a RecyclerView using a LinearLayoutManager, oriented vertically. CYAN : Color. gradle(Module:app). Now that Google has embraced Kotlin—making it an official language on Android— cross-platform development has become a lot simpler. Under Options , select Tools for Apache Cordova > Environment Variable Overrides. In this android programming source code example, we are going to explore how to change background color of selected item in RecyclerView. Then, we will create and use android spinner using kotlin in this application. Note, the examples may look similar to auto-complete but there is a different interation model. Here I have created a RecyclerView app in android. item() Returns a File object representing the file at the specified index in the file list. Sign in to your Play Console. accessibilityservice; android. How to highlight or set RecycleView Item Row Background Color in Android In this tutorial, we are going to learn how to highlight or set RecycleView item row background color in android when clicked. Picker Spinners provide a quick way to select one value from a set. Android Spinner set Selected Item by Value The spinner provides a way to set the selected valued based on the position using the setSelection(int position) method. Features in this project : Send User Registration data to online MySQL database using PHP. In other to achieve this you have the write your own complete solution. We need to have it because sometimes other views inside RecyclerView can have the same subject but it would be with View. If you are looking for a more complete and easier to use row selection option, the Select extension provides an API that is fully integrated with DataTables for selecting rows and acting upon that secletion. Now that Google has embraced Kotlin—making it an official language on Android— cross-platform development has become a lot simpler. You also learn by video. Behaviour of the list changes depending on this. I want to save my RecyclerView, that when I rotating my screen the Screen will be in the same itemPosition. Render a Spinner in XML, and load the selection items via XML file also. In order for the pagination system to continue working reliably, you should make sure to clear the adapter of items (or notify adapter after clearing the array) before appending new items to the list. ROTATE TO LOCATE. How to highlight selected item in RecyclerView. This limit applies to the sum of your Chrome Apps, Chrome Extensions, and Chrome Themes as a total - it is not 20 of each item. Android RecyclerView does not have a default way to group items together. Hi thank you so much for this. What is Google Cast? Google Cast allows users to cast content from a mobile device to a TV. DefaultItemAnimator can be used for basic default animations and works quite well. In this recipe, we will see how to make an endless list using RecyclerView. Android Lollipop introduces corresponding new APIs to help developers implement the Material Design guidelines, and two of these UI widgets are RecyclerView and CardView. So, if you know Java, Android programming is easy :) In this series of tutorials, we show you the list of. Build Menus in Android with Java and XML: Introduction the submenu will be shown for the user to select one of the second-tier options, as shown below. The RecyclerView is a supplementary ViewGroup that is prepared to render any adapter-based view in a same way it provides the gaining to taking place both horizontal and vertical layouts. Android RecyclerView, CardView & Butter Knife Example Tutorial Posted on November 11, 2016 October 22, 2019 by admin Android developers India have intended this post to outline major facts about Recyclerview, Butter Knife, and CardView. In this recipe, we will see how to make an endless list using RecyclerView. Thanks for helping me to understand Android List View using Custom Adapter and SQLite. RecyclerView is developed with kotlin for your next awesome android app. In ListView control, this feature is built in with a method call but when it comes to RecycleView, you have to implement it by yourself. For example, a CircleImageView that inherits ImageView, overriding the onDraw () function to restrict the displayed image to a circle, and adding a loadFromFile () function to load an image from external memory. Examples 5 Facials series or 10 Massages series. In this android example creating a simple listview to display a array values. XML file to style up the button as shown below. RecyclerView does not have an OnItemClickListener like it's predecessor, ListView. I've been through the tutorials on how to use this, and while they make sense, none of them explain how to populate items in the RecyclerView with a string from my Java code. However, you can do more than that just a simple image, Android allow you to change the button’s image depends on different states like button is focused or button is pressed. Select the wireless network icon in the task bar. Android RecyclerView is a more advanced version of ListView with improved performance and other benefits. Using recycler view we can show grids and list of items. Create a new project using your android studio File>>New>>New Project. I'm using c# with selenium. In the popup window, you need to select the Android Clipboard icon this can be seen in the image above. The first item gets selected using a long click. It gives you the same abilities you have when developing natively and (Xamarin claims) without any performance loss. Filter by API Level: Package Index | Class Index. You can also assign an android:minLevel attribute to an item. A function selects the 9th item and the list view should automatically scroll to the 9th item. Verify the emulator configuration and click Finish. RecyclerView is works just like listview but more well organised, felexible to customize and optimize to work and in rendering the view of large data set. ActivityCompat. Espresso is a UI test framework (part of the Android Testing Support Library) that allows you to create automated UI tests for your Android app. In ListView control, this feature is built in with a method call but when it comes to RecycleView, you have to implement it by yourself. This tutorial is geared to the beginner and introduces the basic construction of a GUI with functionality. HOW-TO Configure Advanced Launcher & Rom Collection Browser For Emulators. swipe() and swiping element in horizontal direction using action chain In previous post. Show all the students record on screen inside a dynamic custom ListView arrived from server. Do you want to display a questionaire? A survey for a medical trial? SurveyKit is an Android library that allows you to create exactly that. Prepare an array of elements to be shown in Spinner view. Now the last phase of this tutorial is creating Options Menu for RecyclerView Item. Using the RecyclerView. Delete Call-log on Android On Samsung Galaxy Devices: To delete single or multiple call log entries on Samsung Galaxy devices, just tap and hold a call log item, select the items you want to delete and then tap the Delete option on the top-right corner of the screen. Which I d like to use it, but there are 2 types of select elements there:1-Single with search 2-Multiple with search. Select Empty Project click on Finish. This format works for some items especially those at the end of the recycler and it fails for the others. Battery power and battery life is a measure of durability, function and longevity. Go ahead and create a new android project from File > New Project. Android RecyclerView does not have a default way to group items together. This article contains examples about how to operate SQLite database table data via android ListView control. It will help you handle motion events and touch events, and convert them into selection in the RecyclerView. SELECT * FROM employees WHERE employee_id < 50 ORDER BY last_name ASC; In this SQLite SELECT statement example, we've used * to signify that we wish to select all fields from the employees table where the employee_id is less than 50. When I click on one of the items, it gets selected and it is highlighted properly but when I click on another one, the second one gets highlighted with the older one. This Android ListView tutorial assumes that you have a simple one line per entry text list up and running in an Android App. Creating listener for spinner item selection and showing selected option in alert. Select a device you like and click Next. From here, open the Ringtones folder if you're moving a ringtone, or open the Notifications folder if you're moving a notification sound file. Features: Built-in GPS mode, after the satellite is connected, the watch will display latitude, longitude, altitude and Greenwich Time. Count + 1) * itemTable. The widget acts as a proxy to the original ; therefore the original element's state is maintained for form submission and serialization. Here is the format of a simple select statement: select "column1" [,"column2",etc] from "tablename" [where "condition"]; [] = optional. We're going to show you how to select multiple items in a RecyclerView list and then save all the selected items' details at the press of a button. While doing this, make sure that you select empty activity as the default one. Share quick USA Basket Manager 2019 PRO review with others and describe your own experience or read existing feedback. This post will walk you through Android ListView Tutorial for building simple and customized ListView using different Android adapters. In our previous tutorial, we learned how to fetch JSON data and display it in RecyclerView using Retrofit. RecyclerView Android Example. In order to add the RecyclerView to your Android Studio project, you will need to import the recylclerview-v7 support library dependency. etc" that affect the selected item. when click on item in recyclerView list, it will select the item and again click will de-select the selected item. Listener will be called when there is a click on an item in the list. The Adapter inflates the layout for that item and creates a ViewHolder instance (not shown) to cache references to the views at that position. setAdapter method. In my application I want to highlight only current selected thumbnail when clicked. For selection we need to use setOnClickListener() method. I have a recyclerView with a bunch of items that have a checkbox to note there availability. Select Create New Virtual Device. CABs are a great way to let your users select multiple items and then take action on all of those items at once. Select Random Items With Repetitions List Element Sometimes we want to pick few elements from a list. Android CheckBox Control Example. This thread is a WIP and will be updated as I have time to include and write more info With this guide you will be able to launch games and emulated games much more "seemlessly". How To Add RecyclerView Using Kotlin. Pixels have automatic SMS backup. Please ignore the steps if you have already created the project. 1 (Jelly Bean). 0, Android now contains a hidden file manager. In Android, ListView let you arranges components in a vertical scrollable list. com/shahzaibMughal/List_ite. Creating an AirWatch Mobile Application Catalog Item. setChecked(true);. gradle First let’s add the code for xmls: activity_main. Android RecyclerView is a more advanced version of ListView with improved performance and other benefits. Second screen which is detail screen, when user click on the listview item it will bring user to new screen which will look like this. Recycler view is more advanced version of list view and it works based on View holder design pattern. There is a common pattern I use in all of my Android RecyclerView adapters to listen for click events on each item. After you have backed up your data to your Google account then you can restore it easily. Ever since it was added to the Android support […] In this tutorial, I’ll show you how to use the new library to create an app that offers an intuitive interface for selecting multiple items in a list. The dynamic search pattern is used to refine or whittle down a existing and visible list of objects. Kotlin RecyclerView Checkbox Example Tutorial, save checkbox state in recyclerview, select all checkbox on single click in android. The mouse and keyboard commands required to select items depends on the look and feel. In this tutorial we would going to Fetch the already inserted data into Firebase database and show that data into android application inside the custom RecyclerView + CardView. RecyclerView Example. This class provides support for managing a "primary" set of selected items, in addition to a "provisional" set of selected items using conventional Collections-like methods. In this tutorial, we will look into what card view in android is, how it is implemented, how we can design the layout using it and finally understand how to define each single item elements using a CardView example. We could use marginStart and marginEnd as well as paddingStart and paddingEnd attributes. Android Lollipop introduces corresponding new APIs to help developers implement the Material Design guidelines, and two of these UI widgets are RecyclerView and CardView. RecyclerView animations - AndroidDevSummit write-up RecyclerView Animations and Behind the Scenes - One more time we're going back to this presentation. Android create RecyclerView CardView Using JSon Parsing PHP MySQL server data. You can also use a element as a child of an element. In this article we are creating an application in which user inputs items to a ListView via an EditText widget. Read my previous tutorial about Upload Image with Text to Firebase Storage. Let us see in this tutorial how to integrate Android’s Preference framework (PreferenceActivity) in any android app. But Android itself has never come with a built-in file manager, forcing manufacturers to create their own file manager apps and users to install third-party ones. In the search list, select Android Support Library V7 RecyclerView. It extends the RecyclerView. Next, press your device's back button once to head out to the main SD card or internal storage directory again. Count; } } Then you need to override the GetView method,. Does anyone has an example on. In Android, you can set a file to open with a certain program by default as you do in Windows. Our app will allow us to delete, mark, refresh and select all rows. Android Custom Gridview Example with Image and Text Hey Developers! In this tutorial, we will learn how to make an Android Custom GridView with Image and Text. Highlighting selected item in a RecyclerView does not only let a user know where they are it also gives a visual clue of which particular item is currently selected. 1 (Jelly Bean). Set setOnItemSelectedListener to the Spinner. The course is design in such a way that every one can easily understand the concept of android, PHP and the login behind eCommerce store development. In this example, we will create a ListView with multiple selection mode with button click event. If you need to see and additional code like my SQLite class or the recyclerview activity please don't hesitate to ask. My project name is RecyclerviewDemo you can use your own. In this android recyclerview tutorial, we'll implement a vertical list with recyclerview. 1 (API level 25) For more on Android, watch our tutorial Outputting Data to Your. But Spinner accepts single selection. The ActionProvider is customized to display actions menu on the action bar to allow the user to select its action items to sort the ListView. Page 1 Page 2 Page 3 Page 4 Page 5 Page 6 Page 7 Page 8 Page 9 Page 10 Page 11 Page 12. This thread is a WIP and will be updated as I have time to include and write more info With this guide you will be able to launch games and emulated games much more "seemlessly". You can use RecyclerView to display large data set that changes dynamically. Using recycler view we can show grids and list of items. In previous article we learnt about how to use multiple choices in ListView. In this post, I will provide a tutorial on how to remember the drag and drop position of your RecyclerView list items in Android. For example, when creating a state list or layer list, you can exclude the android:drawable attribute from an element and nest a inside it that defines the drawable item as shown below. Android Tutorial and Applications Store, Retrieve, Delete Data & Images from Firebase with RecyclerView - Store, Retrieve, Delete Data & Images from Firebase. Once you release the mouse button, the items contained in the box are highlighted. This example will show you how to add checkbox to each android listview item. The user should be able to see the number of currently selected items. The Basic Working with TListBox - posted in Pascal and Delphi Tutorials: OverviewTListBox is one of the most utilized controls in VCL-based Delphi applications. This tutorial will cover some important aspects of Android RecyclerView giving all the information you need to build a great Android app using it. How to add dividers and spaces between items in RecyclerView? Why doesn't RecyclerView have onItemClickListener()? How to create RecyclerView with multiple view type? Highlight selected item inside a RecyclerView ; Select items in RecyclerView ; how to highlight the selected Item of Recycler View?. I can't figure out how to highlight a listview item when it's selected. ListView VS RecyclerView. If that object is already selected we need to change the background color of row_item selected. Summary: Margins and paddings help to arrange layout elements. Contextual action mode displays a contextual action bar at the top of the screen with action items such as “copy, edit, delete, share,. To use the RecyclerView widget, you have to specify an adapter and a layout manager. The following graphic sketches that. Features: Built-in GPS mode, after the satellite is connected, the watch will display latitude, longitude, altitude and Greenwich Time. The ListView will automatically keep track of a selected item (or items) and handle keyboard presses and touch events to automatically select and deselect items for you. It gives you the same abilities you have when developing natively and (Xamarin claims) without any performance loss. it returns the 1st case. Today I will display how to delete row item from List in android. Check listview with checkbox android example for gaining knowledge about how to use the checkbox in listview row. I have a recyclerView with a bunch of items that have a checkbox to note there availability. One thing that can be really useful is that RecyclerView Animations - Moving Items - Styling Android. In Android development, developers usually have to handle some sort of selection from a list of items. RecyclerView for Android Beginners - How to display data RecyclerView is a component that displays data in different ways and is made with contemporary techniques to make scrolling as smooth as possible and to make development easier. RecyclerView does provide an OnItemTouchListener, but this isn't the same thing: it does not tell you which item was touched. Suppose there is a model class called Item which holds name and surname. In this example, we will create a ListView with multiple selection mode with button click event. This article will show you two advanced examples about how to add custom list items and custom view objects in android Alert Dialog. Android Using RecyclerView with KOTLIN. 1 or greater. Select the wireless network icon in the task bar. Click Next. 0 and retrofit. Then click on Add to App. In this course, discover how to leverage your Swift knowledge to learn Kotlin. When App Portal is connected to an AirWatch instance, you can use the New Catalog Item Wizard to create a mobile application catalog item containing an Apple iOS, Google Android, or Windows Phone mobile app. The Android SDK provides a set of tools and APIs to develop Android applications, using Java. In this RecyclerView Checkbox Android example, we will cover single selection, multiple selection and also select all scenario. Examples 5 Facials series or 10 Massages series. There are two things that you should know about me: I am an IDE enthusiast; I am a productivity geek; So two years ago, when I switched to Intellij IDEA, on which Android Studio is based, I spent a lot of time looking for shortcuts and techniques to become more productive. In this tutorial you’ll learn how to integrate Material Design into an existing app and create delightful interactions using the animation APIs. In this Android Example, we will see how to create a ListView with alphabetical side index. ListView, data binding and ItemTemplate. Once you release the mouse button, the items contained in the box are highlighted. A RecyclerView addon library providing support for item selection. This article shows how powerful and easy to use these two widgets can be. Actually what I need is when I click any item in Recycler View that Item must go in My ArrayList and it should also get highlighted and again when I click or say unselect it must again become normal. With content_main. With Android 6. This is a basic example where an image and text combination will be displayed, and this entire unit will raise a Toast when you click on it. Create an additional test track. SELECT sumquantity FROM inventory order a 13 b 6 c 10 d 11 16 Category 4 from AC 389 at University of Alabama. Define a dependency to RxJava 2. The library provides support for both touch and mouse driven selection. For that first, I have created recycler view in which items are. Recycler view is more advanced version of list view and it works based on View holder design pattern. , Worked on many Android Apps. If you want to select an item, do it yourself. There is only 1 instance of this listener, all of the views call back to the same instance. In this post, i am going to implement a RecyclerView with multi and single selection feature. RecyclerView Example. SelectionTracker. 5 Headers in RecyclerView; Introduction. After you have backed up your data to your Google account then you can restore it easily. Select or edit a column or row. simple_spinner_item, cursor. 1 or higher; a phone or tablet running Android API level 23 or higher; 1. Android : Alert dialog with single choice item selection implementation Android dialog is a small window that prompts the user to make a decision or enter additional information. [code]File directory = new File(path); //path is the string specifying your directory path. Suppose there is a model class called Item which holds name and surname. We can call one activity from another by using Intents. Keep "Blank" selected and click Next. Back to Game/player ↑ From Project. In this tutorial, I'll show you how to use it in an Android Studio project. How can I fix this?. In this Article we are going to discuss about how to implement a simple Android ListView with example using Android Studio. Highlighting selected item in a RecyclerView does not only let a user know where they are it also gives a visual clue of which particular item is currently selected. accessibilityservice; android. gradle First let’s add the code for xmls: activity_main. Select a device you like and click Next. If you want to select an item, do it yourself. This widget is a container for displaying large data sets that can be scrolled very efficiently by maintaining a limited number of views. Call (855) 458-8417 for more information. xml Below we. We will look at how you can change this behaviour at the end of the article. Samsung Galaxy S7 - Support Overview Find device-specific support for your Samsung Galaxy S7, including troubleshooting help and a step-by-step device simulator. The RecyclerView requires an additional XML layout that defines the appearance of data items in its list or grid. Dynamically Loading Recycler View Images in Android Learn how thumbnail images in the table views of Android mobile apps can be loaded dynamically as needed to populate recycler view cells. Below "Delete by date," click the Down arrow and select All time. I have explained best practices of RecyclerView in Android. From here, open the Ringtones folder if you're moving a ringtone, or open the Notifications folder if you're moving a notification sound file. Selecting Items of a RecyclerView using StateListDrawables August 22nd, 2014 By Wolfram Rittmeyer Last week, after I published my introduction to RecyclerView Paul Betts asked on Twitter whether ItemDecorators are useful for displaying the selection state of items. It will help you handle motion events and touch events, and convert them into selection in the RecyclerView. The code up until this point is in the first-approach branch of the GitHub repo:. Select Empty activity, keep the default options in next screen and click finish. What happens is that the defined item animation is applied to each item based on it's linear position in the grid (left to right, top to bottom) creating an awfully long enter animation. One of the first problems you may encounter when using them is their lack of a built-in way to handle multiple content types. Each item of its comprises of a ImageView(thumbnail) and a textView. In this Android SQLite tutorial we will do the following, Create a new database with Employee and Department tables. The color chooser used by this example is created with createDialog. Android ListView With CheckBox Example. Tap and hold a selected column or row and then drag the selected data wherever you like. The recyclerview-selection library enables users to select items in RecyclerView list using touch or mouse input. In this example we used subject TextView but it can be any element inside the RecyclerView item. LayoutManager to be able to detect data set changes in batches during a layout calculation. And here is Android RecyclerView and CardView Tutorial. The payment information provided here is not a commitment by any organization to provide credit, leases or other programs. Additionally, with Pagination in play, things are about to. To be able to make the most of this tutorial, you'll need: Android Studio 3. Behaviour of the list changes depending on this. setBackgroundColor(model. Within the axml (layout) file, we can add RecyclerView as below. https://github. Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project. Select Values from MySQL Database to Android. In this tutorial, we are going to learn how to render a simple RecyclerView with a custom layout. To kick things off, start by downloading the materials for this tutorial (you can find a link at the top or bottom of the page) and open Android Studio 3. Part 4 – Playing with NavigationView By Paresh Mayani - July, 17th 2015 Welcome to the fourth part of this tutorial series on “Android design support library”. In this tutorial, we are going to learn how to add sections in android RecyclerView with SectionedRecyclerViewAdapter library. Most apps that use lists and grids that display items let users interact with the items. SADCJ2FX3LA632066. Often, when you want to display a list, all the items aren’t the same. Feb 09, 2017 By: Dr. This is done by triggering a request for more data once the user crosses a threshold of remaining items before they’ve hit the end. Calling one activity from another in android. The 2019 Ford F-150 is the meaning of tough redefined. In this tutorial I will present you how to use the SearchView using FTS3. The contextual action mode is a system implementation of ActionMode that focuses user interaction toward performing contextual actions. Introduction to RecyclerView. Below "Delete by date," click the Down arrow and select All time. The personal data that you provide through this form will be recorded in a file of Antonio Leiva Gordillo, in order to manage the comments. Any help would be greatly. For example, let’s add dividers to a RecyclerView using a LinearLayoutManager, oriented vertically. if a particular view is off screen, the test won't be able to interact with it). Android CheckBox Control Example. It is important to know how to use it and how to customize its behavior. 10 thoughts on “ Android : How to programmatically click / select / tap a listview item ” MK 11/16/2011 at 6:21 pm. On button click event, we retrieve the selected list view items and create a Bundle with array of selected items and store it in Intent and start another activity (ResultActivity). Use Canva's drag-and-drop feature and layouts to design, share and print business cards, logos, presentations and more. Android is a kernel based operating system. Using a RecyclerView has the following key steps:. The children of the TableRow do not need to set the layout_width and layout_height attributes. For example: SELECT CONCAT(last_name,', ',first_name) AS full_name FROM mytable ORDER BY full_name;. In this RecyclerView Checkbox Android example, we will cover single selection, multiple selection and also select all scenario. Android, an open source operating system for mobile devices (Smartphone and tablet), led by Google. There are many use cases of it, for example, social media, e-commerce application, or any content-based apps. Hands On with Android Fragments. How to Set a Default Text Message Application on Your Android Phone. After you have backed up your data to your Google account then you can restore it easily. It may be time consuming expect if you are doing it as part of learning. Android Open Source - misound Version Select Fragment. Render a Spinner in XML, and load the selection items via XML file also. The column names that follow the select keyword determine which columns will be returned in the results. I tried using the following code. RecyclerView build. The purpose of this project is to learn, so I want to avoid importing some library. The Android SDK provides a set of tools and APIs to develop Android applications, using Java. On the top left navigation panel, click Data & personalization. RecyclerView Part 3: Android RecyclerView OnClick Continue with our series about RecyclerView, we known about basic element of a RecyclerView. As a beginner in android programming your post help me a lot. The fact-checkers, whose work is more and more important for those who prefer facts over lies, police the line between fact and falsehood on a day-to-day basis, and do a great job. Today, my small contribution is to pass along a very good overview that reflects on one of Trump’s favorite overarching falsehoods. Namely: Trump describes an America in which everything was going down the tubes under  Obama, which is why we needed Trump to make America great again. And he claims that this project has come to fruition, with America setting records for prosperity under his leadership and guidance. “Obama bad; Trump good” is pretty much his analysis in all areas and measurement of U.S. activity, especially economically. Even if this were true, it would reflect poorly on Trump’s character, but it has the added problem of being false, a big lie made up of many small ones. Personally, I don’t assume that all economic measurements directly reflect the leadership of whoever occupies the Oval Office, nor am I smart enough to figure out what causes what in the economy. But the idea that presidents get the credit or the blame for the economy during their tenure is a political fact of life. Trump, in his adorable, immodest mendacity, not only claims credit for everything good that happens in the economy, but tells people, literally and specifically, that they have to vote for him even if they hate him, because without his guidance, their 401(k) accounts “will go down the tubes.” That would be offensive even if it were true, but it is utterly false. The stock market has been on a 10-year run of steady gains that began in 2009, the year Barack Obama was inaugurated. But why would anyone care about that? It’s only an unarguable, stubborn fact. Still, speaking of facts, there are so many measurements and indicators of how the economy is doing, that those not committed to an honest investigation can find evidence for whatever they want to believe. Trump and his most committed followers want to believe that everything was terrible under Barack Obama and great under Trump. That’s baloney. Anyone who believes that believes something false. And a series of charts and graphs published Monday in the Washington Post and explained by Economics Correspondent Heather Long provides the data that tells the tale. The details are complicated. Click through to the link above and you’ll learn much. But the overview is pretty simply this: The U.S. economy had a major meltdown in the last year of the George W. Bush presidency. Again, I’m not smart enough to know how much of this was Bush’s “fault.” But he had been in office for six years when the trouble started. So, if it’s ever reasonable to hold a president accountable for the performance of the economy, the timeline is bad for Bush. GDP growth went negative. Job growth fell sharply and then went negative. Median household income shrank. The Dow Jones Industrial Average dropped by more than 5,000 points! U.S. manufacturing output plunged, as did average home values, as did average hourly wages, as did measures of consumer confidence and most other indicators of economic health. (Backup for that is contained in the Post piece I linked to above.) Barack Obama inherited that mess of falling numbers, which continued during his first year in office, 2009, as he put in place policies designed to turn it around. By 2010, Obama’s second year, pretty much all of the negative numbers had turned positive. By the time Obama was up for reelection in 2012, all of them were headed in the right direction, which is certainly among the reasons voters gave him a second term by a solid (not landslide) margin. Basically, all of those good numbers continued throughout the second Obama term. The U.S. GDP, probably the single best measure of how the economy is doing, grew by 2.9 percent in 2015, which was Obama’s seventh year in office and was the best GDP growth number since before the crash of the late Bush years. GDP growth slowed to 1.6 percent in 2016, which may have been among the indicators that supported Trump’s campaign-year argument that everything was going to hell and only he could fix it. During the first year of Trump, GDP growth grew to 2.4 percent, which is decent but not great and anyway, a reasonable person would acknowledge that — to the degree that economic performance is to the credit or blame of the president — the performance in the first year of a new president is a mixture of the old and new policies. In Trump’s second year, 2018, the GDP grew 2.9 percent, equaling Obama’s best year, and so far in 2019, the growth rate has fallen to 2.1 percent, a mediocre number and a decline for which Trump presumably accepts no responsibility and blames either Nancy Pelosi, Ilhan Omar or, if he can swing it, Barack Obama. I suppose it’s natural for a president to want to take credit for everything good that happens on his (or someday her) watch, but not the blame for anything bad. Trump is more blatant about this than most. If we judge by his bad but remarkably steady approval ratings (today, according to the average maintained by 538.com, it’s 41.9 approval/ 53.7 disapproval) the pretty-good economy is not winning him new supporters, nor is his constant exaggeration of his accomplishments costing him many old ones). I already offered it above, but the full Washington Post workup of these numbers, and commentary/explanation by economics correspondent Heather Long, are here. On a related matter, if you care about what used to be called fiscal conservatism, which is the belief that federal debt and deficit matter, here’s a New York Times analysis, based on Congressional Budget Office data, suggesting that the annual budget deficit (that’s the amount the government borrows every year reflecting that amount by which federal spending exceeds revenues) which fell steadily during the Obama years, from a peak of $1.4 trillion at the beginning of the Obama administration, to $585 billion in 2016 (Obama’s last year in office), will be back up to $960 billion this fiscal year, and back over $1 trillion in 2020. (Here’s the New York Times piece detailing those numbers.) Trump is currently floating various tax cuts for the rich and the poor that will presumably worsen those projections, if passed. As the Times piece reported: