This is Android Studio telling you that you have used a new construct (View) without importing it in the import section, at the top of the Java code. This is easy to fix.

Android Studio lets you access Codota by right-clicking on Java code in the editor window and selecting the Get relevant examples menu item, as shown in Figure 16. Jeff Friesen Figure 16.

As the official IDE, Android Studio has come along way since its introduction in 2014 and is now a powerful and (mostly) user-friendly interface for building Android apps. Here is an introduction ...

Among the features that Android Studio provides you'll find an environment for editing the code (called the code editor), a visual layout editor (which lets developers drag specific components ...