If you've already completed the codelab for activities and intents, feel free to use your code as a starting point. In this codelab, you'll pick up where you left off with the Words app at the end of the Activities and Intents codelab. Solution code of Words app from the Activities and Intents codelab.
Fragment brand android#
A computer with Android Studio installed.You'll modify the Words app to use a single activity and multiple fragments, and navigate between fragments with the Navigation Component.
Fragment brand how to#
How to add destinations to a navigation graph, and pass data between fragments while using the Safe Args plugin.How to convert an existing activity into a fragment.How the fragment lifecycle differs from the activity lifecycle.Basic familiarity with nullable and non-nullable values and know how to safely handle null values.How to create instances of Kotlin classes, access class properties, and call methods.How to override and implement methods in an existing class.How the activity lifecycle works at a high level.How to add resource XML files and Kotlin files to an Android Studio project.Prerequisitesīefore completing this codelab, you should know By the end of this codelab, you'll come away with the foundational skills for implementing fragments in your next app. You'll also learn how to use the Jetpack Navigation component and work with a new resource file called the Navigation Graph to navigate between fragments in the same host activity. In this codelab, you'll learn the basics of fragments, and convert the Words app to use them. Both fragments exist simultaneously in the same activity.Īs you can see, fragments are an integral part of building high quality apps. In the example below, both the navigation UI on the left and the content on the right can each be contained in a separate fragment. You can even show multiple fragments at once on a single screen, such as a master-detail layout for tablet devices. All of this happens without launching another activity. Instead, switching tabs simply swaps out the previous fragment with another fragment. In the above screenshot, tapping on a tab doesn't trigger an intent to display the next screen. In fact, many common UI patterns, such as tabs, exist within a single activity, using something called fragments.Ī fragment is a reusable piece of UI fragments can be reused and embedded in one or more activities. Many Android apps don't need a separate activity for every screen. While this is a useful navigation pattern to know, it's only part of the story of making dynamic user interfaces for your apps. You may have to select a menu option or click a button.In the Activities and Intents codelab, you added intents in the Words app, to navigate between two activities. Follow the instructions for disabling the ad blocker on the site you’re viewing.You may have more than one ad-blocker installed. You’ll usually find this icon in the upper right-hand corner of your screen. Click the icon of the ad-blocker extension installed on your browser.When it turns gray, click the refresh icon that has appeared next to it or click the button below to continue.Click on the large blue power icon at the top.Click the UBlock Origin icon in the browser extension area in the upper right-hand corner.It will turn gray and the text above will go from “ON” to “ OFF”. Click on the “ Ad-Blocking” button at the bottom.Click the Ghostery icon in the browser extension area in the upper right-hand corner.Switch off the toggle to turn it from “ Enabled on this site” to “ Disabled on this site”.Click the AdBlocker Ultimate icon in the browser extension area in the upper right-hand corner.“ Block ads on – This website” switch off the toggle to turn it from blue to gray.