In this tutorial i will show you that how to get fragment from ViewPager inside activity or fragment. So main focus of this tutorial is that if you have ViewPager in your activity and you want to access particular method from fragment of ViewPager.
Suppose you have 1 button on your Activity class and you want to use that single button to call method of every fragments of ViewPager. And ViewPager provide tag to each fragment by following syntax :. You can also provide specific position of fragment if you want to access only 1 fragment.
Subscribe to our newsletter and stay updated. Hello Android devs, In this tutorial i will show you that how to get fragment from ViewPager inside activity or fragment. Bundle ; import android. FloatingActionButton ; import android. Fragment ; import android. ViewPager ; import android. AppCompatActivity ; import android. Activity ; import android. Log ; import android. LayoutInflater ; import android.
View ; import android. Share This: 0. Latest Post. How to create custom page in Codeigniter 4 Codeigniter 4 custom How to clear navigation stack after navigating to another fragment in Android Jetpack navigation. Browse Realm database in Google chrome browser database realm.
How to fix blinking issue for RecyclerView notify changes recyclerview animation. Tags Codeigniter 4 2. Jetpack 1.If you are using the latest android application then you have noticed that now days android is following a design pattern.
One of the component of material design is TabLayout. You may have already seen Android TabLayout Example in the apps you use daily. So lets see in this Android TablLayout Example how we can implement the same in our android project. User can swipe the tabs quickly as you can see in the image below.
So thats all for this Android TabLayout Example guys. Feel free to leave your comments if having any troubles and queries regarding this Android TabLayout Example Project.
And stay tuned for more tutorials. In this blog I write tutorials and articles related to coding, app development, android etc.
Hi Dear Belal, Thank you for the amazing tutorials that you post. I mean that the content of the tabs are switching correctly but the toolbar is not changing the selected tab. Just a small problem, when sliding not selecting through the tabs, the content of the page are switching correctly but the pointer on the toolbar are not changing. Like we do with activities by using intents…. I would hope that you provide me the assistance on customizing your source code. Hi Belal Khan! Plz tell me, How we can add an expandable list view items in those tabs??
Please share the code. Hello sir please you can help me. Thanks for the tutorial Belal. Just a suggestion:- Instead of adding any of the listener in main activity use the method tabLayout. Hi Belal: Nice simple example. With the suggested fix I was able to get the code working. However, when I went to recreate the files, I ran into an Android Studio error when I right clicked on the project and selected module.
This is preventing me from adding library dependencies for the TabLayout and Widget functions. My minimum build level is The following is the custom tab layout :- ————————————————————.
Its already switch to another layout on swipe, but ia want to it change the layout on select the tab. Adding a custom layout to be rendered when a specific tab is clicked or touched is a problem. When I do this the tab name disappears and seems to be replaced by the custom layout.
How should I resolve this problem? Otherwise, useful example.Screen slides are transitions between one entire screen to another and are common with UIs like setup wizards or slideshows. This lesson shows you how to do screen slides with a ViewPager provided by the support library. ViewPager objects can animate screen slides automatically. Here's what a screen slide looks like that transitions from one screen of content to the next:.
ViewPager is part of AndroidX. For more information, see Using AndroidX.
Create a layout file that you'll later use for the content of a fragment. You also need to define a string for the contents of the fragment. The following example contains a text view to display some text:. Create a Fragment class that returns the layout that you just created in the onCreateView method.
You can then create instances of this fragment in the parent activity whenever you need a new page to display to the user:.
ViewPager objects have built-in swipe gestures to transition through pages, and they display screen slide animations by default, so you don't need to create your own animation. ViewPager uses PagerAdapter objects as a supply for new pages to display, so the PagerAdapter will use the fragment class that you created earlier. To begin, create a layout that contains a ViewPager :. To display a different animation from the default screen slide animation, implement the ViewPager.
PageTransformer interface and supply it to the view pager. The interface exposes a single method, transformPage. At each point in the screen's transition, this method is called once for each visible page generally there's only one visible page and for adjacent pages just off the screen. For example, if page three is visible and the user drags towards page four, transformPage is called for pages two, three, and four at each step of the gesture.
In your implementation of transformPageyou can then create custom slide animations by determining which pages need to be transformed based on the position of the page on the screen, which is obtained from the position parameter of the transformPage method.
The position parameter indicates where a given page is located relative to the center of the screen. It is a dynamic property that changes as the user scrolls through the pages.
When a page fills the screen, its position value is 0. When a page is drawn just off the right side of the screen, its position value is 1.ViewPager is a layout manager that lets you implement gestural navigation.
Gestural navigation allows the user to swipe left and right to step through pages of data. This guide explains how to implement a swipeable UI with ViewPager, using Fragments as the data pages.
ViewPager is often used in conjunction with fragments so that it is easier to manage the lifecycle of each page in the ViewPager. In this walkthrough, ViewPager is used to create an app called FlashCardPager that presents a series of math problems on flash cards.
Each flash card is implemented as a fragment. The user swipes left and right through the flash cards and taps on a math problem to reveal its answer. This app creates a Fragment instance for each flash card and implements an adapter derived from FragmentPagerAdapter. In Viewpager and Viewsmost of the work was done in MainActivity lifecycle methods. In FlashCardPagermost of the work will be done by a Fragment in one of its lifecycle methods.
This guide does not cover the basics of fragments — if you are not yet familiar with fragments in Xamarin. Android, see Fragments to help you get started with fragments. Create a new Android project called FlashCardPager. Find and install the Xamarin. In FlashCardPagerthe data source is a deck of flash cards represented by the FlashCardDeck class; this data source supplies the ViewPager with item content.
FlashCardDeck contains a ready-made collection of math problems and answers. The FlashCardDeck constructor requires no arguments:. The collection of flash cards in FlashCardDeck is organized such that each flash card can be accessed by an indexer. For example, the following line of code retrieves the fourth flash card problem in the deck:. Download this source file or copy and paste the code into a new FlashCardDeck.
Note that you must use the fully-qualified name android. ViewPager because ViewPager is packaged in a support library.Android tutorial - Replace fragments inside a ViewPager
Change the MainActivity class declaration so that it is derived from FragmentActivity :. MainActivity is derived from FragmentActivity rather than Activity because FragmentActivity knows how to manage the support of fragments. Replace the OnCreate method with the following code:. When you build and run this code, you should see a display that resembles the following screenshot:.
At this point, the ViewPager is empty because it is lacking the fragments that are used populate the ViewPagerand it is lacking an adapter for creating these fragments from the data in FlashCardDeck. In the following sections, a FlashCardFragment is create to implement the functionality of each flash card, and a FragmentPagerAdapter is created to connect the ViewPager to the fragments created from data in the FlashCardDeck.
FlashCardFragment 's view will display the information contained with a single flash card. FlashCardFragment 's view will consist of a TextView that displays the flash card problem text. This view will implement an event handler that uses a Toast to display the answer when the user taps the flash card question. Before FlashCardFragment can be implemented, its layout must be defined.The reason behind this is FragmentStatePagerAdapter is helpful in storing a large number of pages and memory associated with each page visited is less as it keeps only the saved state of the fragment while the page is not visible.
This reduces the overhead while switching between the fragments. I have a fragment interface with tabs along the bottom which open different fragments in the main view. I have one particular fragment which is a list of items. If the user selects one of the items in this list, another fragment opens which contains a viewpager which scrolls horizontally between all of the items in the list in the previous fragment. This works great. The problem comes when the user selects an item in the list, views it, then hits the button on the tab bar to go back to the list, then selects another item.
The second time an item is selected, a blank screen appears instead of the viewpager. I receive no errors in my LogCat when this happens. I had the same issue. Changing the parent class of my PageAdapter from android. FragmentPagerAdapter to android.
I managed to solve this by replacing getFragmentManager with getChildFragmentManager in the parent fragment. This parent fragment was instancing an android. FragmentPagerAdapter in order to contain pageable slideable fragments, which requires a fragment manager in the constructor. To this constructor I passed the return value of getChildFragmentManager. I was getting this same problem on Xamarin Android with a blank screen the second time around.
Setting the following fixed it for me. We got around this by re-implementing the view pager items as standard views rather than fragments and changing the adapter accordingly. You can also initialize the adapter for cases where you experience this error when your app is minimized and later called up. Fragment in ViewPager using FragmentPagerAdapter is blank the second time it is viewed 6 I had the same issue for which I changed adapter from FragmentPagerAdapter to FragmentStatePagerAdapter and getFragmentManager in the parent fragment to getChildFragmentManager The reason behind this is FragmentStatePagerAdapter is helpful in storing a large number of pages and memory associated with each page visited is less as it keeps only the saved state of the fragment while the page is not visible.
Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. Starting in Android 4. With the Android Support V4 library, you can add a fragment inside another fragment.
Try to use it, it may can resolve your problem. After Read some examples, you cant have a FragmentActivity inside a fragmentActivity. Is not necesary to have two fragments and this need be a FragmentPageAdapter Learn more. Asked 6 years, 9 months ago. Active 1 year, 6 months ago.
Viewed 76k times. But a fragment can't have another fragment Hadas Kaminsky 1, 1 1 gold badge 10 10 silver badges 34 34 bronze badges. Gilberto Ibarra Gilberto Ibarra 2, 2 2 gold badges 19 19 silver badges 31 31 bronze badges. Active Oldest Votes. Ankur 13 13 silver badges 20 20 bronze badges.
Ryan S Ryan S 4, 2 2 gold badges 18 18 silver badges 32 32 bronze badges. But is not possible because i cant put a FragmentActivity inside of my Fragment 2because the fragment parent is a FragmentActivity, and the child fragment 2 needs to be a fragmentActivity to have the tabs.
Why do you even need to have fragment 1? Can't you just have a viewpager that references different fragments and then have Fragment 2 below it?
Oh Thanks RSenApps, you are save my life! Khemraj Khemraj SampleFragment in the line adapter. Oh but wait, you can just put 2 fragment into a fragment without fragmentActivity, you know? Or maybe you have your reasons to do it Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password. Post as a guest Name. Email Required, but never shown. The Overflow Blog. Tales from documentation: Write for your clueless users.
Podcast a conversation on diversity and representation. Upcoming Events. Featured on Meta. Feedback post: New moderator reinstatement and appeal process revisions. The new moderator agreement is now live for moderators to accept across the….So first of all, you have to know about TabLayout and ViewPager are.
The app will look like this after you finish this tutorial:. Note: In this post, I used Android Studio 3. The Kotlin version that I used is Kotlin 1. Create three new packages inside your project directory named activity, adapter, and fragment.
Move the MainActivity. Just like RecyclerView, a ViewPager also needs the adapter to manage its data, in this case, it manages Fragments. Create a new Kotlin class named TabPagerAdapter. The adapter will have to extend the FragmentPagerAdapter which is required for ViewPager to manage the fragments inside it. There are three override methods from this class:. Inside method getItem position: Int I also plan to assign an argument to each of fragment to display the title later.
After that, create a new Kotlin class named TabFragment. That code above will simply a fragment class that will display a page title into a single TextView. The title comes from the argument that has been sent from our TabPagerAdapter class before.
Make sense right! The first type of Android TabLayout is a fixed tab, so we will create it first. Next, create a new Kotlin class named FixedTabActivity. So simple right? It will display the activity of a fixed tab like this:. Next, create another class named ScrollableTabActivity. I add several more fragment here so you could see that the tab now is scrollable.
Add a new class named IconTextTabActivity. The appearance will look like this:. Now it is a little bit different kind of tab, a PagerTabStrip is more from ViewPager component, so it will not use a TabLayout to display it.