Now we’ll put the main Activity together. Your layout file should look something like this: This step requires you to dive into the XML of your layout file instead of using the GUI layout editor. The next step is to add the ViewPager to your layout file for your Activity. For more information on this step, check out this page on the Support Library help page on the developer site. To add the library to your project, you’ll need to create a “libs” folder in your project and drop the JAR file in. Although the ViewPager and Fragments are newer constructs in Android, it’s easy to port them back to older versions of Android by using the Support Library. If you want to dive straight into the source code yourself, you can grab the project here.īefore getting started, it’s important to make sure the Support Library is updated from your SDK, and that the library itself is included in your project. Android ViewPager CurrentItem,android,android-fragments,android-viewpager,Android,Android Fragments,Android Viewpager,30,1,2ViewPagersetCurrentItem1 32. It moves from the Application down to the Fragments. This tutorial follows more of a top-down approach.
I’ve put together a quick tutorial that gets a ViewPager up and running (with the Support Library), in just a few steps. The Page Adapter’s job is to supply Fragments (instead of views) to the UI for drawing.
This could be any collection of views and widgets we may need. You can think of PageAdapters in the same way that you think of ListAdapters. We’re not limited to just a List of items. By using Fragments instead of a View here, we’re given a much wider range of possibilities to show in each page.
Each screen that the ViewPager allows the user to scroll to is really a Fragment. This example will use the ViewPager approach to handling the fragments assigned to the. Using the ViewPager requires some knowledge of both Fragments and PageAdapters. In this case, Fragments are “pages”. AppBarLayout> <4.view.ViewPager android:id'. With the ViewPager, the user could then swipe left or right to see other categorized lists.
Consider the idea of grouping search results by certain categories, and showing each category in a separate list. It also has the ability to dynamically add and remove pages (or tabs) at anytime. In a sense, it’s just a nicer way to show the user multiple tabs. The ViewPager is the widget that allows the user to swipe left or right to see an entirely new screen. Toolbar is for showing application name and menu icon. It’s implemented in several of the most-used Android apps, like the Google Play app and one of my own apps, RBRecorder: We can see above that here we add a Toolbar, second is Tablayout and third thing is Viewpager. Import android.os.Bundle import .TabLayout import 4.view.ViewPager import 7.app.AppCompatActivity import 7.widget.Currently, one of the most popular Widgets in the Android library is the ViewPager.
0 kommentar(er)
