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Give the RecyclerView an id of “rv_animal_list”.īadle(module: app) apply plugin: '' apply plugin: 'kotlin-android' apply plugin: 'kotlin-android-extensions' android (switch out 26.1.0 for whatever appcompat version you’re running).Īlso, make sure you’ve applied the kotlin-android-extensions plugin to the adle file if it is not already there. You will be asked to add recyclerview-v7 project dependency select OK (if the dialogue box does not pop up, add the below line to the adle(Module: app) file. Search for RecyclerView in the view search box.ĭrag the RecyclerView underneath the ConstraintLayout. Create an empty adapter the same time you set LayoutManager for the RecyclerView: Save it as field of your Fragment: tLayoutManager(new. Start a new project in Android Studio with an Empty Activity. The adapter creates new items in the form of ViewHolders, populates the ViewHolders with data, and returns information about the data.įor this RecyclerView example, I’ll be loading a list of animals into a RecyclerView.
The layout is the view that will be created for each item to be loaded into the RecyclerView.Ī ViewHolder is used to cache the view objects in order to save memory. RecyclerView has three main parts: the layout, ViewHolder, and adapter. Android devices have limited memory, and your app will not be the only one running on a user’s device. When developing an app, you always want to be aware of the memory cost of the features in your app. Loading all views at the beginning wastes memory since there will be many views loaded that cannot be seen on the screen. It saves memory by reusing views when you scroll in an activity instead of creating them all at the beginning when the activity first loads. The text is somewhat similar to the code in the Layout file activity_add_happpy_place.RecyclerView is used to load views to the activity when you don’t know how many views we need, or have a large number of individual item views to display in one activity. I want to show image, title and description in my recycle view.īut when I am trying to do the same thing I am getting the image but The title and description show some XML text. I am trying to build a HAPPY PLACE App But I am facing this error.
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